Lining plate system for semi-autogenous mill, semi-autogenous mill and lining plate system preparation method

Abstract

The invention discloses a lining plate system for a semi-autogenous mill, and the lining plate system comprises a barrel lining plate assembly which is arranged on the inner wall of a barrel and comprises a plurality of barrel lining plates; the end lining plate assembly is mounted on the inner wall of the end cover at the feeding end and / or the discharging end, is arranged in the radial direction and comprises a plurality of end lining plates; the grid plate assembly is arranged on the inner wall of the end cover at the feeding end and / or the discharging end, is arranged in the radial direction and comprises a plurality of grid plates; and / or, each of the cylinder lining plate, the end lining plate and the grid plate comprises a framework, a bottom lining plate and a lifting strip assembly; the framework, the bottom lining plate and the lifting strip assembly are all prepared through a forging process and are integrally formed forged metal structural parts. The invention further discloses the semi-autogenous mill comprising the lining plate system and a heat treatment method for forging metal structural parts.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine grinding machinery, and relates to a liner system for a semi-autogenous mill, a semi-autogenous mill and a liner system preparation method. BACKGROUND

[0002] In the field of mine beneficiation, the semi-autogenous mill (SAG Mill) is the core equipment for ore grinding, and the internal liner structure has a key influence on the running stability and service life of the equipment. In the prior art, the liner system of the semi-autogenous mill usually includes a barrel liner, an end liner and a lattice plate structure for discharge control. Such a liner system is usually manufactured by casting or rolling process, which has forming capacity and strength requirements to some extent, but still has many problems under the actual high-impact and high-wear ore grinding conditions:

[0003] Firstly, the liner assembly of the traditional structure is prone to serious local wear after a long time of running, especially the rigid stress parts such as the lifting strip, which often becomes the weak link of wear, resulting in shortening of the overall liner replacement cycle and increasing the maintenance cost; secondly, the compactness of the cast or rolled material is insufficient, resulting in uneven distribution of impact resistance and hardness, and easy deformation, cracking or early failure under high impact load; in addition, the uneven wear of each part of the liner system also causes the running stability to decrease, affecting the lifting, falling trajectory and slurry flow path of the material.

[0004] Therefore, the prior art urgently needs a liner system that adopts high-strength materials and improves the structural rigidity, improves the overall hardness and service life of the materials through improved process means, and makes the wear rates of various types of liners (such as lattice plates, barrel liners and end liners) more consistent, thereby improving the overall durability and running efficiency and meeting the actual needs of large-scale, continuous and high-strength operation of mines. SUMMARY

[0005] In order to solve the problems existing in the prior art, the purpose of the present application is to provide a liner system for a semi-autogenous mill, a semi-autogenous mill and a liner system preparation method. The liner system in the present application can realize efficient material lifting, good impact resistance and longer service life under ore grinding conditions.

[0006] The present application specifically includes the following technical solutions:

[0007] The present application provides a liner system for a semi-autogenous mill, which comprises:

[0008] a barrel liner assembly installed on the inner wall of the barrel; the barrel liner assembly is used for protecting the mill barrel and lifting the material, and comprises a plurality of barrel liners assembled in the axial and circumferential directions;

[0009] An end liner plate assembly arranged radially in the inner wall of the end cover at the feed end and / or discharge end is installed; the end liner plate assembly is used to bear impact load and guide material movement, and includes a plurality of radially arranged, block-assembled end liner plates;

[0010] A lattice plate assembly arranged radially in the inner wall of the end cover at the discharge end is installed; the lattice plate assembly is used for slurry screening and medium blocking, and includes a plurality of radially arranged, block-assembled lattice plates;

[0011] And / or,

[0012] The bottom of the barrel liner plate, the end liner plate, and the lattice plate matches the curvature of the inner wall of the barrel or the inner wall of the end cover, can uniformly disperse impact load, and each includes a skeleton, a bottom liner plate, and a lifting strip assembly; the skeleton, the bottom liner plate, and the lifting strip assembly are each prepared by a forging process, are integrally formed as a forged metal structural member, and are processed by heat treatment, so as to have high hardness, high wear resistance, and structural compactness;

[0013] The lifting strip assembly can be used to lift media and materials, and form a stable material falling curve; the number and spacing of the lifting strip assembly can be adjusted according to factors such as the diameter and rotational speed of the mill, to ensure that a suitable material lifting and falling track is formed;

[0014] And / or,

[0015] The skeleton, the bottom liner plate, and the lifting strip assembly are filled and / or covered with a rubber buffer layer, and are fixedly connected together by an overall rubber hot-pressing vulcanization forming process; the rubber buffer layer is firmly bonded to the surface of the skeleton, the bottom liner plate, and the surface of the lifting strip during vulcanization, realizes structural integration, and can play a buffering, wear-resistant, and protective role.

[0016] The lifting strip assembly can further include a lifting strip main body, one or more screw rods, and dovetail clamping blocks;

[0017] One or more dovetail grooves are symmetrically arranged at the bottom and / or side ends of the lifting strip main body, and protrusions matching the shape, size, and number of the dovetail grooves are arranged on the dovetail clamping blocks, and the protrusions are detachably clamped on the dovetail grooves; the screw rods pass through the through holes of the dovetail clamping blocks at both ends, and are fixedly connected by nuts or bolts, so that the screw rods are detachably arranged at the bottom and / or side of the lifting strip main body.

[0018] In a specific embodiment, the screw rod can include a cylindrical shape, a square shape, a threaded shape, or the like, and the axis of the screw rod is consistent with the extension direction of the lifting strip main body;

[0019] And / or, the number of through holes of the dovetail clamping block is greater than or equal to the number of screw rods arranged on the dovetail clamping block.

[0020] The screw rod arranged at the bottom and / or side of the lifting strip assembly can be used to help the rubber to be glued, and to stabilize and fix different components including the rubber and the lifting strip assembly;

[0021] The bottom of the bottom lining plate can also be welded with a steel block to help the rubber to be fixedly connected with the bottom lining plate.

[0022] In one specific embodiment, the surface of the metal structural member is also brushed with glue, so that the metal surface is roughened, and the connection and fixation of the metal and the rubber are more facilitated; more specifically, two layers of adhesives with different properties are usually brushed on the bonding surface of the metal and the rubber, so as to ensure the vulcanization bonding quality of the metal and the rubber.

[0023] In one specific embodiment, when the weight of the single-piece metal structural member is less than 150 kg, two screw rods are usually used; when the weight of the single-piece metal structural member is greater than 150 kg, three screw rods are usually used.

[0024] In one specific embodiment, the lifting strip assembly can also adopt a high-low arrangement mode, and through the structure design of the high-low staggered adjacent lifting strip assemblies, the diversity and optimization of the trajectory of the grinding medium falling are realized, the grinding efficiency is effectively improved, the local impact load can be dispersed, the wear speed of the lining plate is slowed down, and the service life is prolonged, and in addition, the structure can also guide the material to be reasonably layered and discharged, and the overall beneficiation treatment efficiency is improved.

[0025] In one specific embodiment, the lining plate system in the application can also adopt a circumferential equal-division design, and the inner wall or end cover structure of the cylinder is divided into a plurality of lining plate units with consistent shapes, each of which is independently manufactured and installed, so that the structure fitting degree and the operation stability are improved, the subsequent maintenance and replacement are facilitated, the operation and maintenance cost is effectively reduced, and the overall service life of the lining plate is prolonged.

[0026] In one specific embodiment, the shape of the lifting strip assembly can be adjusted to be a special shape according to actual needs, and the direction of the screw rod will also change according to the shape of the lifting strip body.

[0027] In one specific embodiment, the shape of the lifting strip assembly can be a plate shape or a trapezoidal shape.

[0028] In one specific embodiment, the cooperation of the high-hardness and high-strength framework prepared by the forging process, the bottom lining plate, the lifting strip assembly, and the rubber buffer layer can enable the cylinder lining plate, the end lining plate, and the lattice plate to withstand a large impact force in the grinding process, avoid loosening or deformation, and also reduce the wear speed.

[0029] Further preferably, the metal structural parts with higher hardness and better wear resistance can also be used at the easy-wearing parts to ensure the consistent wear between the parts.

[0030] In one embodiment, the wear conditions of the cylinder liner, end liner and lattice plate are related to the steel ball filling rate, and generally, the higher the steel ball filling rate, the higher the wear position.

[0031] In the present application,

[0032] Specifically, the cylinder liner is arranged circumferentially and axially along the inner wall of the cylinder, and is closely assembled in a block structure to form a continuous material flow channel and a medium lifting surface; comprising: a cylinder liner skeleton, a cylinder liner bottom liner, and a cylinder liner lifting strip assembly.

[0033] The cylinder liner skeleton is located at the bottom of the cylinder liner, the cylinder liner bottom liner and the cylinder liner lifting strip assembly are arranged on the working surface of the cylinder liner skeleton and are not directly connected with the cylinder liner skeleton;

[0034] The cylinder liner skeleton, the cylinder liner bottom liner and the cylinder liner lifting strip assembly are filled or covered with a cylinder liner rubber buffer layer between and / or on the surface, and are connected and fixed by a hot-pressing vulcanization forming process.

[0035] In one embodiment, the cylinder liner lifting strip assembly is integrally fixed with the cylinder liner skeleton through the cylinder liner rubber buffer layer, and comprises a cylinder liner lifting strip main body, a cylinder liner screw rod and a cylinder liner dovetail clamping block.

[0036] Two groups of dovetail grooves are formed at the both ends of the bottom of the cylinder liner lifting strip main body; the protrusions arranged on the cylinder liner dovetail clamping block match the shape, size and number of the dovetail grooves, and the cylinder liner lifting strip main body is detachably connected with the cylinder liner dovetail clamping block through the protrusions.

[0037] The cylinder liner screw rod comprises one or more, and the axis is arranged in parallel at the bottom of the cylinder liner lifting strip main body; the both ends of the cylinder liner screw rod respectively pass through the cylinder liner dovetail clamping block with a number of through holes matching the number of the cylinder liner screw rod, and the cylinder liner dovetail clamping block and the cylinder liner screw rod are fixedly connected through bolts.

[0038] In one embodiment, the cross section of the bottom surface of the cylinder liner is arc-shaped, and is continuously distributed along the curvature of the inner wall of the cylinder; when a plurality of cylinder liners are assembled, the arc-shaped bottom surface is smoothly spliced, the overall cylinder liner presents good adhesion, avoids local stress concentration, and adapts to the curved shape of the mill cylinder and the actual stress state.

[0039] In one embodiment, the barrel liner lifting strip assembly is provided with a bevel structure on both sides close to the end cover to avoid structural interference with the end liner or end cover and to guide the smooth flow of material in the end area of the mill to improve the matching degree of the structure and the discharge efficiency.

[0040] In one embodiment, one or more lifting lugs are further provided on the barrel liner.

[0041] In one embodiment, one or more bolt hole seats passing through the upper and lower parts of the barrel liner are further embedded between the barrel liner bottom liner and the barrel liner lifting strip assembly for installing bolts to achieve fixed connection with the barrel.

[0042] In one embodiment, the barrel liner skeleton, the barrel liner bottom liner, or the barrel liner lifting strip assembly is a forged metal structure, preferably made of heat-treated alloy steel material to improve the overall strength and wear resistance.

[0043] In one embodiment, the barrel liner lifting strip body can be a trapezoidal lifting strip and / or a plate-shaped lifting strip.

[0044] In one embodiment, adjacent barrel liners are not completely aligned and partially staggered in the axial direction, which can enhance the mechanical fitting effect between the liners, avoid loosening or displacement of the liners during operation due to vibration or impact, effectively disperse the impact load of the steel balls and ores on the liners, reduce local wear, and improve the overall stability and service life of the liners.

[0045] The end liner is located in the inner wall area of the feed end and / or discharge end of the semi-autogenous mill, and is installed in the radial direction in the form of a fan-shaped or wedge-shaped structure, closely adhering to the end cover curved surface, and has the functions of impact resistance, protection, and auxiliary medium lifting; comprising: an end liner skeleton, an end liner bottom liner, and an end liner lifting strip assembly.

[0046] The end liner skeleton is a wedge-shaped or fan-shaped metal structure arranged in the radial direction for fitting the inner wall of the end cover of the mill, and has an arc-shaped outer edge matching the curvature of the end cover.

[0047] The end liner bottom liner and the end liner lifting strip assembly are arranged on the working surface of the end liner skeleton and are not directly connected to the end liner skeleton; the end liner lifting strip assembly can lift the grinding medium and disturb the material flow path.

[0048] The end liner skeleton, the end liner bottom liner, and the end liner lifting strip assembly are filled or covered with an end liner rubber buffer layer between and / or on the surfaces, and are connected and fixed by a hot-pressing vulcanization molding process.

[0049] The end lining lifting strip assembly is integrally fixed with the end lining skeleton through the end lining rubber buffer layer, comprising an end lining lifting strip main body, an end lining screw rod, and an end lining dovetail clamping block.

[0050] Two groups of dovetail grooves are formed on the side surface of the end lining lifting strip main body, and the protrusions on the end lining dovetail clamping block are matched with the shape, size, and number of the dovetail grooves, and the end lining dovetail clamping block is detachably connected with the end lining lifting strip main body through the protrusions.

[0051] The end lining screw rod comprises one or more screw rods arranged in parallel on the side surface of the end lining lifting strip main body, and the two ends of the end lining screw rod pass through the end lining dovetail clamping block with a through hole matched with the number of the end lining screw rod, and the end lining dovetail clamping block is fixedly connected with the end lining screw rod through bolts.

[0052] In one specific embodiment, the end lining lifting strip assembly is provided with a beveling structure formed in the axial direction of the lifting strip near the end region connected to the cylinder, which is used to avoid direct interference between the lifting strip and the adjacent cylinder lining or end cover structure, guide the medium flow in the end region, relieve local stress concentration, and improve the service life and installation adaptability.

[0053] In one specific embodiment, one or more lifting lugs are further arranged on the end lining.

[0054] In one specific embodiment, one or more bolt hole seats penetrating up and down to the outside are further arranged between the end lining bottom lining and the end lining lifting strip assembly of the end lining, for installing bolts to realize fixed connection with the end cover.

[0055] Or,

[0056] A T-shaped bolt groove is arranged below the end lining lifting strip assembly, and fixed connection with the end cover is realized through installation of a T-shaped bolt.

[0057] In one specific embodiment, the end lining skeleton, the end lining bottom lining, or the end lining lifting strip assembly is a forged metal structure, preferably made of heat-treated alloy steel material, to improve the overall strength and wear resistance.

[0058] In one specific embodiment, positioning protrusions are arranged on the two side edges of the end lining, which have a trapezoidal or right-angled prism shape, and are used to align during assembly and enhance the overall impact resistance of the end part.

[0059] In one specific embodiment, the end lining lifting strip main body can be a trapezoidal lifting strip and / or a plate-shaped lifting strip.

[0060] In one specific embodiment, in order to avoid the bolt hole near the center line of the end liner, the end liner screw corresponding to the position of the bolt hole can also be arranged in a curved shape.

[0061] The lattice plate is installed at the end cover position of the discharge end of the mill, adopts a block type structure, is assembled along the circumferential direction and / or the axial direction of the end cover, and specifically, a plurality of lattice plates are arranged to cover the end cover of the mill; is used for controlling the discharge of the ore pulp, blocking the leakage of the grinding medium, guiding the flow of the material, and realizing the functions of efficient screening and safe discharge; comprising: a lattice plate skeleton, a lattice plate bottom liner, and a lattice plate lifting strip assembly;

[0062] The lattice plate skeleton is located at the bottom of the lattice plate, the lattice plate bottom liner and the lattice plate lifting strip assembly are arranged on the working surface of the lattice plate skeleton, and are not directly connected with the lattice plate skeleton;

[0063] The lattice plate skeleton, the lattice plate bottom liner, and the lattice plate lifting strip assembly are filled or covered with a lattice plate rubber buffer layer between them and / or on their surfaces, the lattice plate rubber buffer layer is cured by a hot-pressing vulcanization forming process to form an integrated fixed structure of the three;

[0064] One or more lattice plate bottom liners and one or more lattice plate lifting strip assemblies are arranged on each lattice plate skeleton; the lattice plate bottom liners and the lattice plate lifting strip assemblies are distributed at intervals to jointly form the complete shape of the lattice plate;

[0065] Longitudinal through holes are arranged on the lattice plate bottom liner, and are arranged obliquely and uniformly on the lattice plate bottom liner to form channels for discharging the ore pulp;

[0066] The through holes can include a boulder window or a lattice hole, and the boulder window and the lattice hole can be alternately or continuously arranged on different lattice plate bottom liners according to actual process requirements; generally, the size of the boulder window is relatively large, and the width thereof is 40-80 mm, the size of the lattice hole is relatively small, and the width thereof is 20-40 mm; the length of the boulder window can be set to 100-300 mm, and the length of the lattice hole can be set to 20-80 mm; in one specific embodiment, the direction of the boulder window or the lattice hole is parallel or perpendicular to the extension direction of the lifting strip; more specifically, when the lifting strip of the lattice plate is curved, arc-shaped or the like, the direction of the boulder window or the lattice hole is parallel to the extension direction of the lifting strip; when the lifting strip of the lattice plate is a conventional straight lifting strip, the direction of the boulder window or the lattice hole is perpendicular to the extension direction of the lifting strip.

[0067] The lattice plate lifting strip assembly comprises a lattice plate lifting strip main body, a lattice plate screw, and a lattice plate dovetail clamping block;

[0068] The bottom and / or side of the lattice plate lifting strip body is provided with one or more groups of non-communicating dovetail grooves, and the lattice plate dovetail clamping block is provided with protrusions matched with the shape, size and number of the dovetail grooves, and the lattice plate dovetail clamping block is detachably connected with the lattice plate lifting strip body through the protrusions.

[0069] The bottom and / or side of the lattice plate lifting strip body is provided with one or more lattice plate screws, and the two ends of the lattice plate screw respectively pass through the lattice plate dovetail clamping block with a through hole matched with the number of the lattice plate screw, and the lattice plate dovetail clamping block is fixedly connected with the lattice plate screw through a bolt.

[0070] In one specific embodiment, each of the lattice plate lifting strip bodies is an integral structure, which is a curved strip-shaped metal member, and the overall structure is coherent and formed by processes including die forging, etc. One side of the lattice plate lifting strip body is provided with a U-shaped hole penetrating up and down, and a bolt hole seat is embedded in the U-shaped hole for installing a bolt to realize fixed connection with an end cover; the U-shaped holes on different lattice plate lifting strip bodies on the same lattice plate are arranged in a straight line along the axial direction.

[0071] The bottom and / or side of the lattice plate lifting strip body is provided with one or more lattice plate screws, and the two ends of the lattice plate screw respectively pass through the lattice plate dovetail clamping block with a through hole matched with the number of the lattice plate screw, and the lattice plate dovetail clamping block is fixedly connected with the lattice plate screw through a bolt.

[0072] One or more dovetail grooves are symmetrically arranged at the corresponding positions of the bottom and side of the lattice plate lifting strip body and the lattice plate dovetail clamping block, respectively, and the lattice plate dovetail clamping block is provided with protrusions matched with the shape, size and number of the dovetail grooves; the lattice plate dovetail clamping block is detachably fixed on the bottom and / or side of the lattice plate lifting strip body through the protrusions.

[0073] In another specific embodiment, the lattice plate lifting strip body is a spliced structure, and each of the lattice plate lifting strip bodies is composed of two or more substructure blocks with regular shape and continuous and matched size; the two or more substructure blocks jointly form a relatively continuous lattice plate lifting strip body.

[0074] In this embodiment, the lattice plate lifting strip body is not provided with a through hole for fixing the lattice plate, and the through hole is directly arranged on the lattice plate framework between the lattice plate lifting strip assembly and the lattice plate bottom lining plate, and a lattice plate screw hole seat is arranged at the corresponding position of the through hole.

[0075] The bottom of each sub-structure block is provided with one or more groups of lattice plate screws, each group of the lattice plate screws including one or more; the axis direction of the lattice plate screw is perpendicular to the extension direction of the sub-structure block, that is, transversely arranged, and the length matches the width of the sub-structure block; the two ends of each group of the lattice plate screws respectively pass through lattice plate dovetail clamping blocks with through holes matching the number of lattice plate screws, and the lattice plate dovetail clamping blocks are fixedly connected with the lattice plate screws through bolts;

[0076] The bottom of each sub-structure block is provided with one or more groups of lattice plate screws, each group of the lattice plate screws including one or more; the axis direction of the lattice plate screw is perpendicular to the extension direction of the sub-structure block, that is, transversely arranged, and the length matches the width of the sub-structure block; the two ends of each group of the lattice plate screws respectively pass through lattice plate dovetail clamping blocks with through holes matching the number of lattice plate screws, and the lattice plate dovetail clamping blocks are fixedly connected with the lattice plate screws through bolts;

[0077] In one specific embodiment, each of the lattice plate lifting strip bodies is an integral structure, which is a straight strip-shaped metal piece formed by including a die forging process; the lattice plate skeleton on one side of the lattice plate lifting strip body is provided with a through hole for fixing the lattice plate, and a lattice plate bolt hole seat is arranged at the corresponding position of the through hole;

[0078] Each of the lattice plate lifting strip bodies is provided with one or more lattice plate screws on the side surface, and the axis direction of the lattice plate screw is consistent with the extension direction of the lattice plate lifting strip body; the two ends of the lattice plate screw respectively pass through lattice plate dovetail clamping blocks with through holes matching the number of lattice plate screws, and the lattice plate dovetail clamping blocks are fixedly connected with the lattice plate screws through bolts;

[0079] The two ends of the side surface of the lattice plate lifting strip body are respectively and symmetrically provided with one or more dovetail grooves at positions corresponding to the lattice plate dovetail clamping blocks, and the lattice plate dovetail clamping blocks are provided with protrusions matching the shape, size and number of the dovetail grooves; the number of the protrusions matches the number of the dovetail grooves; the lattice plate dovetail clamping blocks are respectively and detachably fixed on the side surface of the lattice plate lifting strip body through the protrusions.

[0080] In one specific embodiment, in order to avoid the bolt holes arranged on the straight lifting strip lattice plate, the lattice plate screw can also be arranged in a curved shape at a position corresponding to the bolt hole; the side of the lattice plate lifting strip body opposite to the bolt hole is also provided with a corresponding groove through slotting, so as to prevent the insertion channel from being not smooth when the bolt is inserted;

[0081] In one specific embodiment, the straight lifting bar lattice plate is provided with a through bolt hole on the lifting bar body of the lattice plate, and the lifting lug can be integrally arranged on the upper end of the lifting bar body; a partial protrusion is arranged on the upper part of the lifting bar body opposite to the bolt hole, so as to increase the thickness of the edge of the bolt hole and increase the wear resistance of the bolt hole.

[0082] In one specific embodiment, the lattice plate lifting bar assembly is provided with a beveling structure formed in the axial direction of the lifting bar near the end region connected to the cylinder.

[0083] In one specific embodiment, the side surface of the lattice plate bottom lining plate is provided with a glue hanging groove.

[0084] In one specific embodiment, the lattice plate framework, the lattice plate bottom lining plate, or the lattice plate lifting bar assembly is a forged metal structure.

[0085] The application also provides a semi-autogenous mill, which comprises the above-mentioned lining plate system, cylinder structure, driving system, feeding system, discharging system, support and rotation system.

[0086] The cylinder structure is in a cylindrical shape and is provided with the lining plate system along the axial direction thereof.

[0087] The driving system is used for driving the cylinder structure to rotate around the axial line thereof.

[0088] The feeding system is used for conveying the raw mineral material to the inside of the cylinder structure.

[0089] The discharging system comprises a discharging device matched with the lattice plate structure in the lining plate system and is used for discharging the ground mineral slurry.

[0090] The support and rotation system is used for supporting the cylinder and allowing it to rotate stably.

[0091] The application also provides a preparation method of the lining plate system, which comprises the following steps:

[0092] Step 1: designing and preparing the metal parts in the lining plate system;

[0093] Step 2: performing surface treatment on the metal parts;

[0094] Step 3: placing the treated metal parts into a mold, laying rubber sheets, and completing the pre-positioning of the mold before vulcanization;

[0095] Step 4: performing hot-pressing vulcanization treatment on the assembled mold, so that the rubber is solidified and the metal parts are integrally bonded and fixed;

[0096] Step five, after vulcanization, demolding, trimming and post-processing are carried out to form a lining system with complete structure and use performance.

[0097] In the preparation process of the metal part in the lining system, the heat treatment method includes a tempering step;

[0098] According to different structures and wall thicknesses, the tempering step includes 3-4 times of tempering, and the tempering temperature of each time of tempering is 540-580℃, and the tempering time is 4-8 hours;

[0099] In a specific embodiment, three times of tempering are carried out when the wall thickness is ≤200mm, and four times of tempering are carried out when the wall thickness is >200mm.

[0100] In a specific embodiment, for the trapezoidal lifting strip in the application, a die forging forming method can be used, including the following steps:

[0101] Step 1, first, the electroslag ingot is heated to a forging temperature of 1200-1250℃, and is forged to a square section billet with a required size;

[0102] Step 2, the square billet is heated to a forging temperature of 1200-1250℃ for the second time, and is forged to a preformed inclined surface;

[0103] Step 3, the inclined billet is heated to a forging temperature of 1200-1250℃ for the third time, and is finally formed by die forging;

[0104] Step 4, the finally formed forged lifting strip is subjected to spheroidizing annealing to prevent the forging from cracking;

[0105] Step 5, the forging is obtained by subsequent machining to obtain a lining product;

[0106] Step 6, the lining product after machining is obtained after heat treatment to obtain the final product to meet the performance requirements of the product.

[0107] Or a forging and sawing forming method is used, including the following steps:

[0108] Step 1, first, the electroslag ingot is heated to a forging temperature of 1200-1250℃, and is forged to a square section billet with a required size, 2 pieces are combined as shown in Figure 4 , and the blue line is the sawing line;

[0109] Step 2, the square billet forging lifting strip is subjected to spheroidizing annealing to prevent the forging from cracking;

[0110] Step 3, the square billet is sawed into a wear-resistant lining plate by a band sawing machine;

[0111] Step 4, the sawed product is obtained by machining to obtain a lining product;

[0112] Step 6, the finished product of the plate-shaped lining after machining is obtained after heat treatment to achieve the required performance indicators of the product.

[0113] In one embodiment of the present application, for the plate-shaped lifting strip, a forging forming method is used, including the following steps:

[0114] Step 1, the steel alloy wear-resistant lining is designed into a plate-shaped structure;

[0115] Step 2, the electroslag ingot is heated to a forging temperature of 1200-1250℃, and is forged to the required size of the wear-resistant lining forging lifting strip;

[0116] Step 3, the lining forging lifting strip is subjected to spheroidizing annealing to prevent the forging from cracking;

[0117] Step 4, after annealing, the lining forging is sawn into a plate-shaped wear-resistant lining forging by a band saw bed;

[0118] Step 5, the plate-shaped structure lining finished product is obtained by machining;

[0119] Step 6, the finished product of the plate-shaped lining after machining is obtained after heat treatment to achieve the required performance indicators of the product.

[0120] Step 7, the lining is combined with rubber and other parts to form a lining assembly.

[0121] In one embodiment of the present application, for the trapezoidal lifting strip, the top of the dovetail groove is provided with a round corner R8; the length of the dovetail groove is 40-70mm; the width of the narrowest part of the dovetail groove is 15-40mm (the optimal value is 21mm), and the width of the widest part is 30-60mm (the optimal value is 36mm); the width of the bottom of the dovetail groove is 20-35mm (the optimal value is 26mm); the center lines of the plurality of dovetail grooves on each side are arranged at intervals of 50-100mm (the optimal value is 60mm).

[0122] In one embodiment of the present application, the angle between the back surface of the lifting strip body and the vertical surface is 0-30°, preferably 5°. The top of the lifting strip body is provided with a round corner R30. The distance between the bottom edge of the back surface of the lifting strip body and the center line of the nearest dovetail groove is 56mm.

[0123] In one embodiment of the present application, the angle between the inclined surface and the vertical surface is 15-35°, preferably 26°.

[0124] In one specific embodiment of the present application, for the plate-shaped lifting strip, the dovetail groove top is provided with a round corner R8; the length of the dovetail groove is 40-70 mm; the width of the narrowest part of the dovetail groove is 15-40 mm (the optimal value is 21 mm), and the width of the widest part is 30-60 mm (the optimal value is 36 mm); the width of the bottom of the dovetail groove is 20-35 mm (the optimal value is 26 mm); and the center lines of the multiple dovetail grooves on each side are spaced apart by 50-100 mm (the optimal value is 60 mm).

[0125] In one specific embodiment of the present application, the front surface of the plate-shaped lifting strip body is provided with an R20 round corner between the top surface and the bottom surface, and / or the back surface of the plate-shaped lifting strip body is provided with an R5 round corner between the top surface and the bottom surface; and the distance between the bottom edge surface of the plate-shaped lifting strip body and the nearest center line of the dovetail groove is 48 mm.

[0126] The beneficial effects of the present application include: the lining system provided by the present application significantly improves the overall structural strength and impact resistance of the lining system by adopting a skeleton, a bottom lining plate and a lifting strip assembly in a split structure and realizing composite fixation of the rubber layer by a hot pressing vulcanization process; the detachable connection structure of the dovetail groove in the lifting strip assembly and the lifting strip assembly main body facilitates replacement and maintenance, thereby reducing operation and maintenance costs; the skeleton, the bottom lining plate and the lifting strip assembly all adopt a forging process, and are matched with an optimized tempering heat treatment process, which can effectively improve the metal organization density, improve the hardness uniformity and wear resistance life, reduce deformation and fracture caused by thermal stress, improve the overall stability and service life of the lining system, and is suitable for long-term operation requirements in high-strength grinding environments. BRIEF DESCRIPTION OF DRAWINGS

[0127] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0128] Figure 1 is a schematic diagram of the multi-piece cylinder lining splicing structure of the present application.

[0129] Figure 2 is another schematic diagram of the multi-piece cylinder lining splicing structure of the present application.

[0130] Figure 3 is a perspective view of the splicing structure of two adjacent middle cylinder linings in the present application.

[0131] Figure 4 is a sectional view of the splicing structure of two adjacent middle cylinder linings in the present application.

[0132] Figure 5 is the middle two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure perspective view.

[0133] Figure 6 is the middle two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure section view.

[0134] Figure 7 is the middle two adjacent block cylinder liner after the removal of rubber buffer layer and cylinder liner skeleton after the perspective view.

[0135] Figure 8 is the one end of the two adjacent block cylinder liner splicing structure perspective view.

[0136] Figure 9 is the one end of the two adjacent block cylinder liner splicing structure section view.

[0137] Figure 10 is the one end of the two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure perspective view.

[0138] Figure 11 is the one end of the two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure section view.

[0139] Figure 12 is the one end of the two adjacent block cylinder liner after the removal of rubber buffer layer and cylinder liner skeleton after the perspective view.

[0140] Figure 13 is the other end of the two adjacent block cylinder liner splicing structure perspective view.

[0141] Figure 14 is the other end of the two adjacent block cylinder liner splicing structure section view.

[0142] Figure 15 is the other end of the two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure perspective view.

[0143] Figure 16 is the other end of the two adjacent block cylinder liner after the removal of rubber buffer layer splicing structure section view.

[0144] Figure 17 is the other end of the two adjacent block cylinder liner after the removal of rubber buffer layer and cylinder liner skeleton after the perspective view.

[0145] Figure 18 is the one end of the liner lifting strip structure perspective view.

[0146] Figure 19 is the one end of the liner lifting strip structure section view.

[0147] Figure 20 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0148] Figure 21 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0149] Figure 22 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0150] Figure 23 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0151] Figure 24 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0152] Figure 25 is a perspective view of the structure of the end liner of the present application after the removal of the rubber cushion layer.

[0153] Figure 26 is a front view of the lattice plate of the present application.

[0154] Figure 27 is a front view of the two spliced structures of the lattice plate of the present application after the removal of the rubber cushion layer.

[0155] Figure 28 is a perspective view of the two spliced structures of the lattice plate of the present application after the removal of the rubber cushion layer.

[0156] Figure 29 is a perspective view of the two spliced structures of the lattice plate of the present application after the removal of the rubber cushion layer.

[0157] Figure 30 is a perspective view of the structure of the lifting strip assembly of the lattice plate of the present application.

[0158] Figure 31 is a perspective view of the structure of the lifting strip assembly of the lattice plate of the present application.

[0159] Figure 32 is a perspective view of the structure of the lifting strip assembly of the lattice plate of the present application.

[0160] Figure 33 is a perspective view of the structure of the lifting strip assembly of the lattice plate of the present application.

[0161] Figure 34 is a perspective view of the structure of the lifting strip assembly of the lattice plate of the present application.

[0162] Figure 35is another front view of the lattice plate of the present invention.

[0163] Figure 36 is another front view of the lattice plate of the present invention after removing the rubber buffer layer.

[0164] Figure 37 is another perspective view of the lattice plate of the present invention after removing the rubber buffer layer.

[0165] Figure 38 is another perspective view of the lifting strip assembly structure of the lattice plate of the present invention.

[0166] Figure 39 is another bottom view of the lifting strip assembly structure of the lattice plate of the present invention.

[0167] Figure 40 is a comparison diagram of the wear of the forged high alloy steel liner plate and the existing cast liner plate of the present invention.

[0168] Figure 41 is a diagram showing the impact wear time and cumulative wear weight loss of the forged high alloy steel liner plate and the existing cast liner plate of the present invention.

[0169] Figure 42 is a comparison diagram of the performance of the forged high alloy steel liner plate and the existing cast liner plate of the present invention.

[0170] Figure 43 is a diagram showing the installation of the liner plate system of the present invention in a semi-autogenous mill.

[0171] Figure 44 is another diagram showing the installation of the liner plate system of the present invention in a semi-autogenous mill.

[0172] Figure 45 is a diagram showing the structure of the trapezoidal lifting strip of the present invention.

[0173] Figure 46 is a diagram showing the structure of the plate-shaped lifting strip of the present invention.

[0174] Figure 47 is a diagram showing the structure of one angle of the straight lifting strip lattice plate of the present invention.

[0175] Figure 48 is a diagram showing the structure of another angle of the straight lifting strip lattice plate of the present invention.

[0176] Figure 49 is a diagram showing the structure of one angle of the straight lifting strip lattice plate of the present invention after removing the rubber buffer layer.

[0177] Figure 50 is a diagram showing the structure of another angle of the straight lifting strip lattice plate of the present invention after removing the rubber buffer layer.

[0178] Figure 51 is another angle structure schematic diagram of the straight type lifting strip lattice plate after removing the rubber buffer layer of the present application.

[0179] Figure 52 is another angle structure schematic diagram of the straight type lifting strip lattice plate after removing the rubber buffer layer of the present application.

[0180] Figure 53 is another angle structure schematic diagram of the straight type lifting strip lattice plate after removing the rubber buffer layer of the present application. DETAILED DESCRIPTION

[0181] The present application is further described in conjunction with the following specific examples and drawings. The process, conditions, experimental methods, etc. for implementing the present application are the general knowledge and common sense in the art, and the present application has no special limitation.

[0182] Figures 1-53 In the figure, 1-cylinder liner plate, 11-cylinder liner plate skeleton, 12-cylinder liner plate bottom lining plate, 13-cylinder liner plate lifting strip assembly, 131-cylinder liner plate lifting strip main body, 132-cylinder liner plate screw, 133-cylinder liner plate dovetail clamping block, 14-cylinder liner plate rubber buffer layer, 15-cylinder liner plate lifting lug, 16-cylinder liner plate bolt hole seat, 2-end lining plate, 21-end lining plate skeleton, 22-end lining plate bottom lining plate, 23-end lining plate lifting strip assembly, 231-end lining plate lifting strip main body, 232-end lining plate screw, 233-end lining plate dovetail clamping block, 234-T-shaped bolt slot, 24-end lining plate rubber buffer layer, 25-end lining plate lifting lug, 26-end lining plate bolt hole seat, 3-lattice plate, 31-lattice plate skeleton, 32-lattice plate bottom lining plate, 321-through hole, 33-lattice plate lifting strip assembly, 331-lattice plate lifting strip main body, 3311-substructure block, 332-lattice plate screw, 333-lattice plate dovetail clamping block, 334-U-shaped hole, 335-lattice plate bolt hole seat, 34-lattice plate rubber buffer layer, 35-lattice plate lifting lug, 36-lattice plate bolt hole.

[0183] The present application provides a lining plate system for a semi-autogenous mill, which can be installed in the semi-autogenous mill, such as Figure 43 or 44, the lining plate system comprises:

[0184] The cylinder lining plate assembly installed on the inner wall of the cylinder comprises a plurality of cylinder lining plates 1.

[0185] The end lining plate assembly installed on the inner wall of the feed end and / or discharge end cover and arranged radially comprises a plurality of end lining plates 2.

[0186] The lattice plate assembly installed on the inner wall of the feed end and / or discharge end cover and arranged radially comprises a plurality of lattice plates 3.

[0187] and / or,

[0188] The barrel lining plate 1, the end lining plate 2 and the lattice plate 3 all comprise a framework, a bottom lining plate and a lifting strip assembly; the framework, the bottom lining plate and the lifting strip assembly are all prepared by a forging process and are integrally formed forged metal structural members;

[0189] and / or,

[0190] The framework, the bottom lining plate and the lifting strip assembly are filled or covered by a rubber buffer layer and are connected and fixed by a hot-pressing vulcanization forming process.

[0191] In the specific implementation of the present application, the metal structural members applied generally adopt high-wear-resistance high-toughness forged steel alloy materials, which comprise the following elements in percentage by weight:

[0192] C: 0.40% to 0.70%; Si: 0.2% to 1.0%; Mn: 0.2% to 1.5%; Cr: 5% to 7%; Mo: 0.2% to 2.5%; V: 0.2% to 1.0%; Ni: 0.2% to 0.5%; P: ≤0.01%; S: ≤0.05%, and the balance being iron.

[0193] In different specific embodiments, the following elements in percentage by weight can be included:

[0194] C: 0.40%; Si: 0.5%; Mn: 0.4%; Cr: 5%; Mo: 2.3%; V: 1.0%; Ni: 0.3%; P: 0.01%; S: 0.005%, and the balance being iron;

[0195] or,

[0196] C: 0.40%; Si: 0.45%; Mn: 0.5%; Cr: 6%; Mo: 1.2%; V: 0.7%; Ni: 0.2%; P: 0.01%; S: 0.005%, and the balance being iron;

[0197] or,

[0198] C: 0.45%; Si: 0.5%; Mn: 1.5%; Cr: 6.5%; Mo: 0.5%; V: 0.2%; Ni: 0.3%; P: 0.01%; S: 0.003%, and the balance being iron;

[0199] or,

[0200] C: 0.45%; Si: 0.55%; Mn: 1.5%; Cr: 7%; Mo: 0.2%; V: 0.5%; Ni: 0.3%; P: 0.01%; S: 0.004%, and the balance being iron;

[0201] or,

[0202] C: 0.60%; Si: 0.6%; Mn: 1.4%; Cr: 5.5%; Mo: 0.45%; V: 0.25%; Ni: 0.5%; P: 0.008%; S: 0.004%, the balance being iron;

[0203] or,

[0204] C: 0.70%; Si: 0.55%; Mn: 1.2%; Cr: 5%; Mo: 0.65%; V: 0.3%; Ni: 0.5%; P: 0.01%; S: 0.005%, the balance being iron.

[0205] The application also provides a preparation method of the lining plate system, and the method comprises the following steps:

[0206] Step one, designing and preparing the metal components in the lining plate system;

[0207] Step two, surface treatment of the metal components;

[0208] Step three, placing the treated metal components into a mold, laying rubber sheets, and completing the pre-positioning of the mold before vulcanization;

[0209] Step four, heat-press vulcanization treatment of the assembled mold, so that the rubber is solidified and the metal components are integrally bonded and fixed;

[0210] Step five, demolding, edge trimming and post-treatment after vulcanization, so that the lining plate system with complete structure and use performance is formed.

[0211] In step one, the following specific steps can be included in the implementation process:

[0212] Step 1, smelting: placing raw materials into an electric arc furnace or a medium-frequency electric furnace for smelting, controlling the temperature of the molten steel to 1500-1550℃ after the components meet the requirements, and pouring into a mold of the required specification to form an electrode steel bar, and then removing the surface oxide scale and pit defects of the electrode steel bar by a grinding machine after cooling and demolding;

[0213] Step 2, electroslag remelting: electroslag remelting the electrode steel bar with the surface oxide scale and pit defects removed in step 1, so that the molten steel is slowly crystallized and solidified into an electrode steel ingot of the required specification after filtering impurities through the slag system;

[0214] Step 3, high-temperature homogenization: heating the round electroslag steel ingot obtained in step 2 to 1200-1250℃, and the holding time is 0.3xD hours, D is the diameter of the steel ingot in cm, so that the components in the steel are uniformly diffused, and then cooled to a forging temperature of 1150-1200℃;

[0215] Step 4, upsetting: Upset the 1150~1200℃ electroslag steel ingot along the height direction of the ingot to 30% on the press, then finish it, and reheat it in the furnace for 2-4 hours; then upset it a second time to 50% height, finish it, and always maintain the final forging temperature of 870-1250℃;

[0216] Step 5, drawing: The steel ingot after repeated upsetting is drawn and forged to the final size to obtain the module. The final forging temperature is maintained above 870-1250℃. After drawing, it is pit cooled to 350℃.

[0217] Step 6, Ultra-refining treatment: Heat the module to 1050-1100℃ and hold for (0.2-0.3) × d hours, where d is the effective thickness of the forging in cm. Water quench to about 100℃, then heat to 820-880℃ and isothermally cool for (0.4-0.6) × d hours, where d is the effective thickness of the forging in cm. Then, slightly open the furnace door and cool to 500-550℃, then rapidly heat to 720-780℃ and isothermally cool for (0.9-1.2) × d hours, where d is the effective thickness of the forging in cm. Finally, furnace cool to 300℃ and air cool.

[0218] Step 7: The blank obtained in Step 6 is processed into a finished product using a CNC machine tool; the finished product is a slab.

[0219] Step 8, tempering treatment: Heat the module to 1000~1050℃ and hold for 5~10 hours, oil quench to about 100℃, remove from the furnace and air cool, and immediately temper.

[0220] In step 8, the tempering process can be performed using the following tempering methods:

[0221] Depending on the structure and wall thickness, 3 to 4 tempering cycles are performed, with each tempering cycle having a tempering temperature of 540 to 580°C and a tempering time of 4 to 8 hours.

[0222] The steel alloy material produced in this invention has the following performance indicators: hardness 48~53HRC; impact energy ≥300J.

[0223] Example 1: Cylindrical Liner Structure

[0224] This embodiment provides a cylinder liner for a semi-autogenous mill. Multiple cylinder liners are spliced ​​together to form a complete cylinder liner assembly, such as... Figure 1 Or as shown in Figure 2.

[0225] like Figure 5 As shown, the cylinder liner 1 is arranged circumferentially and axially along the inner wall of the cylinder, and the segmented structure is tightly assembled to form a continuous material flow channel and medium lifting surface; it includes a cylinder liner skeleton 11, a cylinder liner bottom liner 12, and a cylinder liner lifting strip assembly 13;

[0226] The cylinder liner skeleton 11 is located at the bottom of the cylinder liner 1, and the cylinder liner bottom lining plate 12 and the cylinder liner lifting strip assembly 13 are arranged on the working surface of the cylinder liner skeleton 11 and are not directly connected with the cylinder liner skeleton 11;

[0227] The cylinder liner skeleton 11, the cylinder liner bottom lining plate 12, and the cylinder liner lifting strip assembly 13 are filled or covered with a cylinder liner rubber buffer layer 14, and are connected and fixed by a hot-pressing vulcanization forming process, as shown in Figure 3 or 4;

[0228] And / or,

[0229] As shown in Figure 7 The cylinder liner lifting strip assembly 13 is integrally fixed with the cylinder liner skeleton 11 through the cylinder liner rubber buffer layer 14, and includes a cylinder liner lifting strip main body 131, a cylinder liner screw 132, and a cylinder liner dovetail clamping block 133.

[0230] As shown in Figure 6 The cylinder liner lifting strip main body 131 is provided with two groups of dovetail grooves which are not connected and symmetrical at both ends of the bottom; the protrusions provided on the cylinder liner dovetail clamping block 133 match the shape, size, and number of the dovetail grooves, and the cylinder liner dovetail clamping block 133 is detachably connected with the cylinder liner lifting strip main body 131 through the protrusions.

[0231] The cylinder liner screw 132 includes one or more screws which are arranged in parallel at the bottom of the cylinder liner lifting strip main body 131; the two ends of the cylinder liner screw 132 respectively pass through the cylinder liner dovetail clamping block 133 which has a through hole matching the number of the cylinder liner screw 132, and the cylinder liner dovetail clamping block 133 is fixedly connected with the cylinder liner screw 132 through bolts.

[0232] In one specific embodiment, as shown in Figures 8-17 The cylinder liner lifting strip assembly 13 is provided with a beveling structure on both sides close to the end cover;

[0233] And / or,

[0234] The cylinder liner 1 is provided with one or more cylinder liner lifting lugs 15 for lifting;

[0235] And / or,

[0236] One or more cylinder liner bolt hole seats 16 are embedded in the cylinder liner 1, and bolts are arranged to achieve fixed connection with the cylinder;

[0237] and / or,

[0238] The barrel liner skeleton 11, the barrel liner bottom liner 12, or the barrel liner lifting strip assembly 13 is a forged metal structure.

[0239] and / or,

[0240] The barrel liner lifting strip body 131 is trapezoidal and / or plate-shaped.

[0241] Specifically, in the embodiment, the steel alloy material to which the barrel liner skeleton 11, the barrel liner bottom liner 12, or the barrel liner lifting strip assembly 13 is applied includes the following elements in percentage by weight:

[0242] C: 0.40%; Si: 0.5%; Mn: 0.4%; Cr: 5%; Mo: 2.3%; V: 1.0%; Ni: 0.3%; P: 0.01%; S: 0.005%, and the balance is iron.

[0243] Embodiment 2 end liner structure

[0244] The embodiment provides an end liner for a semi-autogenous mill, the end liner 2 is located in the inner wall area of the feed end and / or discharge end of the semi-autogenous mill, and is installed in a radial direction in a fan-shaped or wedge-shaped structure close to the end cover curved surface; comprising: an end liner skeleton 21, an end liner bottom liner 22, and an end liner lifting strip assembly 23;

[0245] The end liner skeleton 21 is a wedge-shaped or fan-shaped metal structure, which is arranged in a radial direction and used to fit the inner wall of the mill end cover, and has an arc-shaped outer edge matched with the curvature of the end cover;

[0246] The end liner bottom liner 22 and the end liner lifting strip assembly 23 are arranged on the working surface of the end liner skeleton 21 and are not directly connected to the end liner skeleton 21; the end liner lifting strip assembly 23 can lift the grinding medium and disturb the material flow path;

[0247] The end liner skeleton 21, the end liner bottom liner 22, and the end liner lifting strip assembly 23 are filled or covered with an end liner rubber buffer layer 24 between and / or on the surface, and are connected and fixed by a hot-pressing vulcanization forming process;

[0248] As shown in Figure 20 The end liner lifting strip assembly 23 is integrally fixed with the end liner skeleton 21 through the end liner rubber buffer layer 24, and includes an end liner lifting strip body 231, an end liner screw 232, and an end liner dovetail clamping block 233.

[0249] The end lining plate lifting strip body 231 is provided with two groups of dovetail grooves which are not communicated and symmetrical at both ends of the side surface; the protrusions arranged on the end lining plate dovetail clamping block 233 are matched with the dovetail grooves in shape, size and number, and the end lining plate dovetail clamping block 233 is detachably connected with the end lining plate lifting strip body 231 through the protrusions.

[0250] The end lining plate screw 232 includes one or more than one, and the axis is arranged in parallel on the side surface of the end lining plate lifting strip body 231; the two ends of the end lining plate screw 232 respectively pass through the end lining plate dovetail clamping block 233 which has a through hole matched with the number of the end lining plate screw 232, and the end lining plate dovetail clamping block 233 is fixedly connected with the end lining plate screw 232 through bolts.

[0251] In one specific embodiment, the end lining plate lifting strip assembly 23 is provided with a beveling structure formed in the axial direction of the lifting strip near the end region of the side connected with the cylinder, as shown in Figure 18 ;

[0252] And / or,

[0253] The end lining plate 2 is provided with one or more end lining plate lifting lugs 25 for lifting;

[0254] And / or,

[0255] The end lining plate 2 is provided with one or more end lining plate bolt hole seats 26 for installing bolts to realize fixed connection with the end cover;

[0256] And / or,

[0257] The end lining plate skeleton 21, the end lining plate bottom lining plate 22 or the end lining plate lifting strip assembly 23 is a forged metal structure;

[0258] And / or,

[0259] As shown in Figure 19 , the end lining plate lifting strip assembly 23 is provided with a T-shaped bolt groove 234 below, and the fixed connection with the end cover is realized by installing a T-shaped bolt;

[0260] And / or,

[0261] The two side edges of the end lining plate 2 are provided with positioning convex ribs, and the outer shape is trapezoidal or right-angle prism;

[0262] And / or,

[0263] The end lining plate lifting strip body 23 is trapezoidal and / or plate-shaped.

[0264] Specifically, in the embodiment, the steel alloy material applied to the end lining plate skeleton 21, the end lining plate bottom lining plate 22 or the end lining plate lifting strip assembly 23 includes the following elements with a weight percentage of:

[0265] C: 0.40%; Si: 0.45%; Mn: 0.5%; Cr: 6%; Mo: 1.2%; V: 0.7%; Ni: 0.2%; P: 0.01%; S: 0.005%, balance iron.

[0266] Example 3 Integrated lifting strip lattice plate structure

[0267] The embodiment provides an integrated lifting strip lattice plate for a semi-autogenous mill, as shown in the figure. Figure 26

[0268] The lattice plate 3 is installed at the end cover position of the mill and adopts a block type structure and is assembled in the circumferential direction and / or the axial direction of the end cover. The lattice plate 3 comprises a lattice plate framework 31, a lattice plate bottom lining plate 32 and a lattice plate lifting strip assembly 33, as shown in the figure. Figures 27-29

[0269] The lattice plate framework 31 is located at the bottom of the lattice plate, and the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are arranged on the working surface of the lattice plate framework 31 and are not directly connected to the lattice plate framework 31.

[0270] The lattice plate framework 31, the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are filled or covered with a lattice plate rubber buffer layer 34 on the surface and / or between them. The lattice plate rubber buffer layer 34 is cured by a hot-pressing vulcanization forming process to form an integrated fixing structure of the three.

[0271] And / or,

[0272] Each of the lattice plate frameworks 31 is provided with one or more lattice plate bottom lining plates 32 and one or more lattice plate lifting strip assemblies 33. The lattice plate bottom lining plates 32 and the lattice plate lifting strip assemblies 33 are distributed at intervals to jointly form the complete shape of the lattice plate 3.

[0273] The lattice plate bottom lining plate 32 is provided with a long strip-shaped through hole 321 penetrating through the upper and lower portions of the lattice plate bottom lining plate 32 and is uniformly arranged obliquely on the lattice plate bottom lining plate 32.

[0274] The through hole 321 comprises a boulder window or a lattice hole, and the boulder window and the lattice hole are arranged alternately or continuously. The size width of the boulder window is 40-80 mm, and the size width of the lattice hole is 20-40 mm.

[0275] As shown in the figure, Figures 30-33 ​​As shown, each of the lattice plate lifting strip bodies 331 is of an integral structure, as a whole, is a curved strip-shaped metal piece, is structurally coherent, and is formed by including a die forging process; one side of the lattice plate lifting strip body 331 is provided with a U-shaped hole 334 penetrating up and down, and a lattice plate bolt hole seat 335 is embedded in the U-shaped hole 334 for installing a bolt to be passed through to realize fixed connection with an end cover; the U-shaped holes on different lattice plate lifting strip bodies 331 on the same lattice plate are in a straight line in the axial direction;

[0276] The bottom and side of each of the lattice plate lifting strip bodies 331 are respectively provided with one or more lattice plate screw rods 332, the axis direction of the lattice plate screw rod 332 is consistent with the extension direction of the lattice plate lifting strip body 331; the two ends of the lattice plate screw rod 332 respectively pass through a lattice plate dovetail clamping block 333 having a through hole matching the number of the lattice plate screw rod 332, and the lattice plate dovetail clamping block 333 and the lattice plate screw rod 332 are fixedly connected by a bolt;

[0277] The bottom and side of each of the lattice plate lifting strip bodies 331 are respectively provided with one or more lattice plate screw rods 332, the axis direction of the lattice plate screw rod 332 is consistent with the extension direction of the lattice plate lifting strip body 331; the two ends of the lattice plate screw rod 332 respectively pass through a lattice plate dovetail clamping block 333 having a through hole matching the number of the lattice plate screw rod 332, and the lattice plate dovetail clamping block 333 and the lattice plate screw rod 332 are fixedly connected by a bolt;

[0278] Specifically, in the embodiment, the steel alloy material to which the lattice plate framework 31, the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are applied includes the following elements in percentage by weight:

[0279] C: 0.70%; Si: 0.55%; Mn: 1.2%; Cr: 5%; Mo: 0.65%; V: 0.3%; Ni: 0.5%; P: 0.01%; S: 0.005%, and the balance is iron.

[0280] Embodiment 4: Spliced lifting strip lattice plate structure

[0281] The embodiment provides a spliced lifting strip lattice plate for a semi-autogenous mill, as shown in Figure 34 or 35.

[0282] As shown in Figure 36 or 37, the lattice plate 3 is installed at the end cover position of the mill, adopts a block type structure, and is spliced in the circumferential direction and / or the axial direction of the end cover; comprising: a lattice plate framework 31, a lattice plate bottom lining plate 32, and a lattice plate lifting strip assembly 33;

[0283] The lattice plate skeleton 31 is located at the bottom of the lattice plate, the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are arranged on the working surface of the lattice plate skeleton 31 and are not directly connected with the lattice plate skeleton 31;

[0284] The lattice plate skeleton 31, the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are filled or covered with a lattice plate rubber buffer layer 34 on the surface, and the lattice plate rubber buffer layer 34 is cured by a hot-pressing vulcanization forming process to form an integrated fixed structure of the three;

[0285] And / or,

[0286] Each of the lattice plate skeleton 31 is provided with one or more lattice plate bottom lining plates 32 and one or more lattice plate lifting strip assemblies 33; the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are distributed at intervals to jointly form the complete shape of the lattice plate 3;

[0287] The lattice plate bottom lining plate 32 is provided with a long strip-shaped through hole 321 passing through the upper and lower parts, which is arranged uniformly on the lattice plate bottom lining plate 32;

[0288] The through hole 321 includes a stone window or a lattice hole, and the stone window and the lattice hole are arranged alternately or continuously; the size width of the stone window is 40-80 mm, and the size width of the lattice hole is 20-40 mm;

[0289] As shown in Figure 38 Or 39, the lattice plate lifting strip body 331 is a spliced structure, each of the lattice plate lifting strip body 331 is composed of two or more substructure blocks 3311 with regular shape and continuous and matching size to form a relatively continuous lattice plate lifting strip body 331;

[0290] The lattice plate skeleton 31 is provided with a through hole for fixing the lattice plate 3;

[0291] The bottom of each of the substructure blocks 3311 is provided with one or more groups of lattice plate screws 332, each group of the lattice plate screws 332 includes one or more; the axis direction of the lattice plate screw 332 is perpendicular to the extension direction of the substructure block 3311, and the length matches the width of the substructure block 3311; the two ends of each group of the lattice plate screws 332 respectively pass through the lattice plate dovetail clamping block 333 with a through hole matching the number of lattice plate screws 332, and the lattice plate dovetail clamping block 333 and the lattice plate screw 332 are fixedly connected through bolts;

[0292] The bottom of the lattice plate lifting strip body 331 is symmetrically provided with one or more dovetail grooves at the positions corresponding to the lattice plate dovetail clamping blocks 333, and the lattice plate dovetail clamping blocks 333 are provided with protrusions matched with the shape, size and number of the dovetail grooves; the number of the protrusions matches the number of the dovetail grooves; and the lattice plate dovetail clamping blocks 333 are detachably fixed on the bottom of the sub-structure block 3311 through the protrusions.

[0293] Specifically, in the embodiment, the steel alloy material to which the lattice plate framework 31, the lattice plate bottom lining plate 32 and the lattice plate lifting strip assembly 33 are applied includes the following elements with the weight percentage:

[0294] C: 0.60%; Si: 0.6%; Mn: 1.4%; Cr: 5.5%; Mo: 0.45%; V: 0.25%; Ni: 0.5%; P: 0.008%; S: 0.004%, and the balance is iron.

[0295] Example 5 Metal structural part preparation method

[0296] The embodiment provides a metal structural part preparation process example, which comprises the following steps:

[0297] Step 1, smelting: the raw materials are put into an electric arc furnace or a medium-frequency electric furnace for smelting, and after the composition reaches the requirement, the molten steel is controlled to 1500-1550 DEG C and cast into a required specification mold to form an electrode steel bar, and after cooling and demolding, a special grinding machine is used to remove the surface oxide scale and pit defects of the electrode steel bar; wherein the raw materials refer to high-quality scrap steel or alloy steel, low-carbon chromium iron, molybdenum iron, vanadium iron and the like.

[0298] In the embodiment, the composition is determined by pre-furnace and post-furnace composition detection: direct-reading spectrometer to determine whether the composition meets the requirements.

[0299] Step 2, electroslag remelting: the electrode steel bar with the surface oxide scale and pit defects removed in step 1 is electroslag remelted, so that the molten steel is slowly crystallized and solidified into an electroslag ingot after impurity removal through slag filtering; the electroslag ingot is selected according to the size and forging ratio requirements of the product;

[0300] Step 3, high-temperature homogenization: the round electroslag steel ingot obtained in step 2 is heated to 1200-1250 DEG C, the holding time is 0.3xD hours, D is the diameter size of the steel ingot cm, so that the composition in the steel is uniformly diffused, and then cooled to a forging temperature of 1150-1200 DEG C;

[0301] Step 4, upsetting: the 1150-1200℃ electroslag ingot is upset to 30% height along the ingot height direction on a press, then finished, and reheated for 2-4 hours; the second upsetting is performed to 50% height, and finished, and the final forging temperature is kept above 870-1250℃;

[0302] Step 5, lengthening: the ingot after the second repeated upsetting is lengthened and forged to the final size to obtain a module, and the final forging temperature is kept above 870-1250℃, and the lengthened ingot is pit cooled to about 350℃;

[0303] Step 6, superfine treatment: the module is heated to 1050-1100℃ and kept for (0.2-0.3)×d hours, d is the effective thickness of the forging in cm, water quenched to about 100℃, then heated to 820-880℃ and kept for (0.4-0.6)×d hours, d is the effective thickness of the forging in cm; then the furnace door is slightly opened and the furnace is cooled to 500-550℃, then rapidly heated to 720-780℃ and kept for (0.9-1.2)×d hours, d is the effective thickness of the forging in cm, then the furnace is cooled to 300℃ and the module is taken out and air cooled;

[0304] In the present application, the slight opening of the furnace door has the following effects: 1) reducing the process cycle; 2) obtaining better grain size and more non-spontaneous nucleation cores;

[0305] Step 7, the blank obtained in step 6 is machined into a finished product by a numerical control machine tool;

[0306] Step 8, quenching and tempering treatment: the module is heated to 1000-1050℃ and kept for 5-10 hours, oil quenched to about 100℃, taken out and air cooled, immediately tempered, and through 3-4 times of tempering, the high wear-resistant and high-toughness forged steel alloy material for the half self-grinding machine liner or grid plate is obtained.

[0307] Example 6 Comparison of the forged structure liner plate of the present application with the existing wear-resistant plate

[0308] As shown in Figure 40 , the red line is a schematic diagram of the upper surface after wear, and for the wear condition of different parts of a whole liner plate, the liner plate of the cylinder near the discharge end wears more seriously, and the unit in the figure is mm, and the axial wear height of the forged steel alloy cylinder liner plate produced by the forging process in the present application is obviously smaller than the axial wear height of the cylinder liner plate of the existing wear-resistant plate.

[0309] The forged wear-resistant alloy GH6 or GH3 (self-designation) in the present application is compared with the existing cast chromium-molybdenum steel 70CrMo, as shown in Figure 41 and 42As shown, the GH6 / GH3 forging alloy in the application has the characteristics of reasonable composition, fine grain, high density, high hardenability (maximum hardenability wall thickness 400mm), less slag and stable structure; the dynamic load impact wear resistance of GH3 is increased by 42.1% compared with 70CrMo steel, and the wear resistance of GH6 is increased by 52.7% compared with CrMo steel.

[0310] Example 7 Straight lifting strip lattice plate

[0311] Each of the lattice plate lifting strip bodies 331 is of an integral structure, and is a straight strip-shaped metal piece as a whole, which is formed by including a die forging process; a through hole for fixing the lattice plate 3 is arranged on one side of the lattice plate skeleton 31 of the lattice plate lifting strip body 331, and a lattice plate bolt hole seat 335 is arranged at the corresponding position of the through hole;

[0312] One or more lattice plate screws 332 are arranged on the side surface of each of the lattice plate lifting strip bodies 331, and the axis direction of the lattice plate screw 332 is consistent with the extension direction of the lattice plate lifting strip body 331; the two ends of the lattice plate screw 332 respectively pass through the lattice plate dovetail clamping blocks 333 having through holes matched with the number of the lattice plate screws 332, and the lattice plate dovetail clamping blocks 333 and the lattice plate screws 332 are fixedly connected through bolts;

[0313] One or more dovetail grooves are symmetrically arranged at the positions corresponding to the lattice plate dovetail clamping blocks 333 at the two ends of the side surface of the lattice plate lifting strip body 331, and protrusions matched with the shape, size and number of the dovetail grooves are arranged on the lattice plate dovetail clamping blocks 333; the lattice plate dovetail clamping blocks 333 are respectively detachably fixedly arranged on the side surface of the lattice plate lifting strip body 331 through the protrusions.

[0314] In order to avoid the bolt holes arranged on the straight lifting strip lattice plate, the positions of the lattice plate screws corresponding to the bolt holes can also be arranged in a curved shape; the side of the lattice plate lifting strip body opposite to the bolt hole is also provided with a corresponding groove through slotting, so as to prevent the insertion channel from being not smooth when the bolt is inserted.

[0315] Example 8 Straight lifting strip lattice plate

[0316] As shown, Figure 53 The straight lifting strip lattice plate is provided with a through lattice plate bolt hole 36 on the lattice plate lifting strip assembly 33, and the lattice plate lifting lug 35 can also be integrally arranged on the upper end of the lattice plate lifting strip assembly 33; a partial protrusion is arranged on the upper part of the lattice plate lifting strip assembly 33 opposite to the bolt hole, so as to increase the edge thickness of the lattice plate bolt hole 36 and increase the wear resistance at the lattice plate bolt hole 36.

[0317] Example 9 End lining plate structure

[0318] As Figures 21-25 shown, the end lining plate 2 is located in the inner wall area of the feed end and / or discharge end of the semi-autogenous mill, and is installed in a radial direction in a fan-shaped or wedge-shaped structure close to the end cover curved surface; comprising: an end lining plate skeleton 21, an end lining plate bottom lining plate 22, and an end lining plate lifting strip assembly 23;

[0319] The end lining plate skeleton 21 is a wedge-shaped or fan-shaped metal structure arranged in a radial direction for fitting the inner wall of the end cover of the mill, and has an arc-shaped outer edge matching the curvature of the end cover;

[0320] The end lining plate bottom lining plate 22 and the end lining plate lifting strip assembly 23 are arranged on the working surface of the end lining plate skeleton 21 and are not directly connected to the end lining plate skeleton 21; the end lining plate lifting strip assembly 23 can lift the grinding medium and disturb the material flow path;

[0321] The end lining plate skeleton 21, the end lining plate bottom lining plate 22, and the end lining plate lifting strip assembly 23 are filled or covered with an end lining plate rubber buffer layer 24 between and / or on the surface, and are connected and fixed by a hot-pressing vulcanization forming process;

[0322] The end lining plate lifting strip assembly 23 is integrally fixed with the end lining plate skeleton 21 through the end lining plate rubber buffer layer 24, and comprises an end lining plate lifting strip body 231, an end lining plate screw 232, and an end lining plate dovetail clamping block 233;

[0323] Two groups of dovetail grooves are formed at both ends of the side surface of the end lining plate lifting strip body 231; the protrusions provided on the end lining plate dovetail clamping block 233 match the shape, size, and number of the dovetail grooves, and the protrusions are detachably connected with the end lining plate lifting strip body 231;

[0324] The end lining plate screw 232 comprises one or more screws arranged in parallel along the axis on the side surface of the end lining plate lifting strip body 231; the two ends of the end lining plate screw 232 respectively pass through the end lining plate dovetail clamping block 233 having a number of through holes matching the number of the end lining plate screw 232, and the end lining plate dovetail clamping block 233 and the end lining plate screw 232 are fixedly connected through bolts.

[0325] In the description of the application, it should be understood that the indicated positional or relative relationship in the text is based on the positional or relative relationship shown in the drawings, which is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0326] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0327] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0328] Many different embodiments or examples are provided in the present application to realize different structures of the application. In order to simplify the disclosure of the application, the components and settings of specific examples are described in the embodiments. Of course, they are only examples, and the purpose is not to limit the application. In addition, the present application can repeatedly refer to the same reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0329] The protection scope of the present application is not limited to the above embodiments. Changes and advantages that can be thought of by those skilled in the art without departing from the spirit and scope of the present application are included in the present application, and are protected by the appended claims.

Claims

1. A liner system for a semi-autogenous mill, characterized by, The liner system comprises: A cylinder liner assembly installed on the inner wall of the cylinder, comprising a plurality of cylinder liners (1); An end liner assembly installed on the inner wall of the end cover at the feed end and / or discharge end, comprising a plurality of end liners (2); A grid plate assembly installed on the inner wall of the end cover at the discharge end, comprising a plurality of grid plates (3); And / or, The cylinder liner (1), the end liner (2), and the grid plate (3) each comprise a framework, a bottom liner, and a lifting strip assembly; the framework, the bottom liner, and the lifting strip assembly are each prepared by a forging process and are integrally formed as a forged metal structural member.

2. The system of claim 1, wherein, The lifting strip assembly comprises a lifting strip main body, one or more screw rods, and dovetail blocks; The bottom and / or side ends of the lifting strip main body are symmetrically provided with one or more dovetail grooves, the dovetail blocks are provided with protrusions matching the shape, size, and number of the dovetail grooves, the protrusions are detachably connected to the dovetail grooves, and the screw rods pass through the through holes of the dovetail blocks and are fixedly connected by nuts or bolts, so that the screw rods are detachably arranged on the bottom and / or side of the lifting strip main body.

3. The system of claim 2, wherein, The screw rod comprises a cylindrical shape, a square shape, or a threaded shape, and the axis of the screw rod is consistent with the extension direction of the lifting strip main body; And / or, The number of through holes of the dovetail block is greater than or equal to the number of screw rods.

4. The system of claim 1, wherein, The cylinder liner (1) is arranged along the circumferential direction and the axial direction of the inner wall of the cylinder, is closely assembled in a block type structure, forms a continuous material flow channel and a medium lifting surface, and comprises a cylinder liner framework (11), a cylinder liner bottom liner (12), and a cylinder liner lifting strip assembly (13); The cylinder liner framework (11) is located at the bottom of the cylinder liner (1), the cylinder liner bottom liner (12) and the cylinder liner lifting strip assembly (13) are arranged on the working surface of the cylinder liner framework (11) and are not directly connected to the cylinder liner framework (11); The cylinder liner framework (11), the cylinder liner bottom liner (12), and the cylinder liner lifting strip assembly (13) are filled or covered with a cylinder liner rubber buffer layer (14) between and / or on the surfaces thereof, and the cylinder liner framework (11), the cylinder liner bottom liner (12), and the cylinder liner lifting strip assembly (13) are fixed by a hot-pressing vulcanization forming process; And / or, The cylinder liner lifting strip assembly (13) is integrally fixed with the cylinder liner framework (11) through the cylinder liner rubber buffer layer (14) and comprises a cylinder liner lifting strip main body (131), a cylinder liner screw rod (132), and a cylinder liner dovetail block (133); Two groups of dovetail grooves that are not connected and are symmetrically arranged at both ends of the bottom of the cylinder liner lifting strip main body (131); the protrusions provided on the cylinder liner dovetail block (133) match the shape, size, and number of the dovetail grooves, and the cylinder liner lifting strip main body (131) is detachably connected to the cylinder liner dovetail block (133) through the protrusions; The barrel lining plate screw rod (132) comprises one or more than one, the axis parallel arrangement is arranged at the bottom of the barrel lining plate lifting strip body (131); both ends of the barrel lining plate screw rod (132) respectively pass through the barrel lining plate dovetail block (133) with the number of through holes matched with the barrel lining plate screw rod (132), and the barrel lining plate dovetail block (133) is fixedly connected with the barrel lining plate screw rod (132) by bolts.

5. The system of claim 4, wherein, The barrel lining plate lifting strip assembly (13) is provided with a bevel structure on both sides close to the end cover; And / or, One or more barrel lining plate lifting lugs (15) are arranged on the barrel lining plate (1) for hoisting; And / or, One or more barrel lining plate bolt hole seats (16) are embedded in the barrel lining plate (1) for installing bolts to realize fixed connection with the barrel; And / or, The barrel lining plate framework (11), the barrel lining plate bottom lining plate (12) or the barrel lining plate lifting strip assembly (13) is a forged metal structure; And / or, The barrel lining plate lifting strip body (131) is trapezoidal and / or plate-shaped.

6. The spacer system of claim 1, wherein, The end lining plate (2) is located in the inner wall area of the feed end and / or discharge end of the semi-autogenous mill, and is installed in the radial direction in the form of a fan-shaped or wedge-shaped structure and closely adheres to the end cover curved surface; comprising: an end lining plate framework (21), an end lining plate bottom lining plate (22), and an end lining plate lifting strip assembly (23); The end lining plate framework (21) is a wedge-shaped or fan-shaped metal structure, which is arranged in the radial direction and used for adhering to the inner wall of the end cover of the mill, and has an arc-shaped outer edge matched with the curvature of the end cover; The end lining plate bottom lining plate (22) and the end lining plate lifting strip assembly (23) are arranged on the working surface of the end lining plate framework (21) and are not directly connected with the end lining plate framework (21); the end lining plate lifting strip assembly (23) can lift the grinding medium and disturb the material flow path; The end lining plate framework (21), the end lining plate bottom lining plate (22), the end lining plate lifting strip assembly (23) and / or the surface are filled or covered with an end lining plate rubber buffer layer (24), and the end lining plate framework (21), the end lining plate bottom lining plate (22) and the end lining plate lifting strip assembly (23) are connected and fixed by a hot-pressing vulcanization forming process; The end lining plate lifting strip assembly (23) is integrally fixed with the end lining plate framework (21) through the end lining plate rubber buffer layer (24) and comprises an end lining plate lifting strip body (231), an end lining plate screw rod (232) and an end lining plate dovetail block (233); The end lining plate lifting strip body (231) is provided with two groups of dovetail grooves which are not communicated and symmetrical at both ends of the side surface; the protrusions arranged on the end lining plate dovetail block (233) are matched with the shape, size and number of the dovetail grooves, and the protrusions are detachably connected with the end lining plate lifting strip body (231); The end lining plate screw rod (232) includes one or more axis parallel arrangement disposed on the side of the end lining plate lifting strip body (231); the two ends of the end lining plate screw rod (232) respectively pass through the end lining plate dovetail clamping block (233) with the number of through holes matched with the end lining plate screw rod (232), and the end lining plate dovetail clamping block (233) is fixedly connected with the end lining plate screw rod (232) through bolts.

7. The sheathing system of claim 6, wherein, The end lining plate lifting strip assembly (23) is provided with a chamfering structure formed in the axial direction of the lifting strip near the end region of the side connected with the cylinder; And / or, One or more end lining plate lifting lugs (25) are arranged on the end lining plate (2) for hoisting; And / or, One or more end lining plate bolt hole seats (26) are embedded in the end lining plate (2) for installing bolts to realize fixed connection with the end cover; And / or, The end lining plate skeleton (21), the end lining plate bottom lining plate (22), or the end lining plate lifting strip assembly (23) is a forged metal structure; And / or, A T-shaped bolt groove (234) is arranged below the end lining plate lifting strip assembly (23), and fixed connection with the end cover is realized by installing a T-shaped bolt; And / or, The two side edges of the end lining plate (2) are provided with positioning convex edges, and the outer shape is trapezoidal or rectangular prism; And / or, The end lining plate lifting strip body (231) is trapezoidal and / or plate-shaped.

8. The spacer system of claim 1, wherein, The lattice plate (3) is installed at the end cover position of the discharge end of the mill, adopts a block type structure, and is assembled in the circumferential direction of the end cover and / or in the axial direction; the lattice plate (3) comprises a lattice plate skeleton (31), a lattice plate bottom lining plate (32), and a lattice plate lifting strip assembly (33). The lattice plate skeleton (31) is located at the bottom of the lattice plate, the lattice plate bottom lining plate (32) and the lattice plate lifting strip assembly (33) are arranged on the working surface of the lattice plate skeleton (31) and are not directly connected with the lattice plate skeleton (31); The lattice plate skeleton (31), the lattice plate bottom lining plate (32), and the lattice plate lifting strip assembly (33) are filled or covered with a lattice plate rubber buffer layer (34) between them and / or on their surfaces, the lattice plate rubber buffer layer (34) is cured through a hot-pressing vulcanization molding process to form an integrated fixed structure of the three; And / or, One or more lattice plate bottom lining plates (32) and one or more lattice plate lifting strip assemblies (33) are arranged on each lattice plate skeleton (31); the lattice plate bottom lining plates (32) and the lattice plate lifting strip assemblies (33) are distributed at intervals, or the lattice plate bottom lining plates (32) are arranged on the two sides of the lattice plate lifting strip assemblies (33) in columns to jointly form the complete shape of the lattice plate (3); Longitudinal through holes (321) are arranged on the lattice plate bottom lining plate (32) in a vertical direction. The through hole (321) comprises a stone window or a lattice hole, and the stone window and the lattice hole are arranged alternately or continuously; the length of the stone window is 100-300 mm, and the width is 40-80 mm; the length of the lattice hole is 20-80 mm, and the width is 20-40 mm; And / or, The lattice plate lifting strip assembly (33) comprises a lattice plate lifting strip body (331), a lattice plate screw (332), and a lattice plate dovetail clamping block (333); The bottom and / or the side of the lattice plate lifting strip body (331) are provided with one or more groups of non-communicating dovetail grooves, the lattice plate dovetail clamping block (333) is provided with protrusions matched with the shape, size, and number of the dovetail grooves, and the lattice plate dovetail clamping block (333) is detachably connected with the lattice plate lifting strip body (331) through the protrusions. The bottom and / or the side of the lattice plate lifting strip body (331) are provided with one or more lattice plate screws (332), the two ends of the lattice plate screw (332) respectively pass through the lattice plate dovetail clamping block (333) with through holes matched with the number of the lattice plate screw (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through bolts. And / or, The lattice plate lifting strip body (331) is trapezoidal and / or plate-shaped.

9. The sheathing system of claim 8, wherein, Each lattice plate lifting strip body (331) is an integral structure, is a curved strip-shaped metal piece as a whole, has a coherent structure, and is formed through a die forging process; one side of the lattice plate lifting strip body (331) is provided with a U-shaped hole (334) penetrating from top to bottom, a lattice plate bolt hole seat (335) is embedded in the U-shaped hole (334), a bolt is arranged to pass through the lattice plate bolt hole seat (335) to realize fixed connection with an end cover, and the U-shaped holes on different lattice plate lifting strip bodies (331) on the same lattice plate are arranged in a straight line in the axial direction. The bottom and the side of each lattice plate lifting strip body (331) are respectively provided with one or more lattice plate screws (332), the axis direction of the lattice plate screw (332) is consistent with the extension direction of the lattice plate lifting strip body (331), the two ends of the lattice plate screw (332) respectively pass through the lattice plate dovetail clamping block (333) with through holes matched with the number of the lattice plate screw (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through bolts. The bottom and the side of the lattice plate lifting strip body (331) are respectively provided with one or more dovetail grooves at positions corresponding to the lattice plate dovetail clamping block (333), the lattice plate dovetail clamping block (333) is provided with protrusions matched with the shape, size, and number of the dovetail grooves, and the lattice plate dovetail clamping block (333) is detachably fixedly arranged on the bottom and / or the side of the lattice plate lifting strip body (331) through the protrusions.

10. The system of claim 8, wherein, The lattice plate lifting strip body (331) is a spliced structure, each of the lattice plate lifting strip bodies (331) is composed of two or more substructure blocks (3311) with regular shape and continuous size, and forms a relatively continuous lattice plate lifting strip body (331); The lattice plate skeleton (31) is provided with a through hole for fixing the lattice plate (3), and the through hole is provided with a lattice plate bolt hole seat (335) at a corresponding position; The bottom of each substructure block (3311) is provided with one or more groups of lattice plate screws (332), each group of the lattice plate screws (332) includes one or more; the axis direction of the lattice plate screw (332) is perpendicular to the extension direction of the substructure block (3311), and the length matches the width of the substructure block (3311); the two ends of each group of the lattice plate screws (332) pass through the lattice plate dovetail clamping block (333) with a number of through holes matching the number of the lattice plate screws (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through a bolt. The bottom of each substructure block (3311) is provided with one or more groups of lattice plate screws (332), each group of the lattice plate screws (332) includes one or more; the axis direction of the lattice plate screw (332) is perpendicular to the extension direction of the substructure block (3311), and the length matches the width of the substructure block (3311); the two ends of each group of the lattice plate screws (332) pass through the lattice plate dovetail clamping block (333) with a number of through holes matching the number of the lattice plate screws (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through a bolt.

11. The sheathing system of claim 8, wherein, The bottom of each substructure block (3311) is provided with one or more groups of lattice plate screws (332), each group of the lattice plate screws (332) includes one or more; the axis direction of the lattice plate screw (332) is perpendicular to the extension direction of the substructure block (3311), and the length matches the width of the substructure block (3311); the two ends of each group of the lattice plate screws (332) pass through the lattice plate dovetail clamping block (333) with a number of through holes matching the number of the lattice plate screws (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through a bolt. The bottom of each substructure block (3311) is provided with one or more groups of lattice plate screws (332), each group of the lattice plate screws (332) includes one or more; the axis direction of the lattice plate screw (332) is perpendicular to the extension direction of the substructure block (3311), and the length matches the width of the substructure block (3311); the two ends of each group of the lattice plate screws (332) pass through the lattice plate dovetail clamping block (333) with a number of through holes matching the number of the lattice plate screws (332), and the lattice plate dovetail clamping block (333) is fixedly connected with the lattice plate screw (332) through a bolt. The end region of the lattice plate lifting strip assembly (33) close to the side connected with the cylinder is provided with a beveling structure formed in the axial direction of the lifting strip.

12. The sheathing system of claim 8, wherein, And / or, ​ The side of the lattice plate bottom lining plate (32) is provided with a glue hanging groove; And / or, The lattice plate framework (31), the lattice plate bottom lining plate (32), or the lattice plate lifting strip assembly (33) is a forged metal structure.

13. The sheathing system of claims 5, 7 or 8, wherein, For the trapezoidal lifting strip, the dovetail groove top is provided with a round corner R8; the length of the dovetail groove is 40-70mm; the width of the narrowest part of the dovetail groove is 15-40mm, and the width of the widest part is 30-60mm; the width of the bottom of the dovetail groove is 20-35mm; the center lines of multiple dovetail grooves on each side are arranged with a spacing of 50-100mm; And / or, For the plate-shaped lifting strip, the dovetail groove top is provided with a round corner R8; the length of the dovetail groove is 40-70mm; the width of the narrowest part of the dovetail groove is 15-40mm, and the width of the widest part is 30-60mm; the width of the bottom of the dovetail groove is 20-35mm; the center lines of multiple dovetail grooves on each side are arranged with a spacing of 50-100mm.

14. A semi-autogenous mill characterised in that, The semi-autogenous mill comprises the lining plate system, a barrel structure, a driving system, a feeding system, a discharging system, a support and rotation system according to any one of claims 1-13; The barrel structure is in a cylindrical shape and is provided with the lining plate system along its axial direction; The driving system is used to drive the barrel structure to rotate around its axis; The feeding system is used to deliver raw mineral materials to the inside of the barrel structure; The discharging system comprises a discharging device matched with the lattice plate structure in the lining plate system and is used to guide the finished ore slurry out; The support and rotation system is used to support the barrel and allow it to rotate stably.

15. A method of making a lath system, characterized by The method comprises: Step one, designing and preparing the metal components in the lining plate system; Step two, surface treating the metal components; Step three, placing the treated metal components into a mold, laying rubber sheets, and completing the pre-positioning of the mold before vulcanization; Step four, heat-pressing and vulcanizing the assembled mold to solidify the rubber and realize the integrated bonding and fixing of the metal components; Step five, after vulcanization, demolding, edge trimming, and post-processing, the lining plate system with complete structure and use performance is formed.

16. The production method according to claim 15, wherein In the process of preparing the metal components of the lining plate system, the heat treatment method comprises a tempering step: According to different structures and wall thicknesses, the tempering step comprises 3-4 times of tempering, and the tempering temperature of each time of tempering is 540-580℃, and the tempering time is 4-8 hours; And / or, When the wall thickness is ≤200mm, three times of tempering are performed, and when the wall thickness is >200mm, four times of tempering are performed.

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