Electrode paste raw material high-uniformity crushing system based on anode scrap

Abstract

The invention relates to an anode scrap-based electrode paste raw material high-uniformity crushing system which comprises a first jaw crusher, a second jaw crusher, a centrifugal separator, a plurality of material conveying belts, a belt type iron remover body and a dust removal assembly, the material conveying belt is sequentially connected with a discharging port of the first jaw crusher, a feeding port of the second jaw crusher, a discharging port of the second jaw crusher and a feeding port of the centrifugal sorting machine. The belt type iron removal machine body is suspended above any material conveying belt through a support, impurities with high iron content in the materials are adsorbed and screened out, and the purity of available substances in the anode scrap materials is further improved; the dust removal assembly comprises a plurality of negative pressure pipes, one end of each negative pressure pipe is connected with a negative pressure fan, the other end of each negative pressure pipe communicates with the upper portion of the first jaw crusher, the upper portion of the second jaw crusher and the upper portion of the centrifugal sorting machine, the powder content of the anode scrap particles is reduced, and the particle size uniformity and the quality uniformity of the anode scrap particles are improved at least.

Description

Technical Field

[0001] The present application belongs to the field of electrode paste production technology, and in particular relates to a high-uniformity crushing system for electrode paste raw materials based on residual anodes. Background Art

[0002] As one of the raw materials for electrode paste production, scrap anodes, thanks to their high alumina content and low price, help reduce electrode paste production costs and losses. Crushing and removing impurities from the scrap anodes yields uniformly sized particles, which helps improve the purity and uniformity of the electrode paste. However, the quality of recycled scrap anodes varies greatly, with shapes and sizes varying. Furthermore, due to their composition, the crushed material is often contaminated with high-iron impurities and dust, reducing the uniformity of the electrode paste raw material and making the scrap anodes unsuitable for use in the preparation of high-quality electrode paste. Summary of the Invention

[0003] Based on the above-mentioned background technical needs, the present application provides a high-uniformity crushing system for electrode paste raw materials based on scrap anodes, which is used to solve the problem in the prior art that the crushed scrap anodes are doped with a large amount of impurities with high iron content and dust, which reduces the uniformity of the electrode paste raw materials and makes the scrap anodes unsuitable for use in the preparation of high-quality electrode paste.

[0004] To achieve the above objectives, the technical solution of this application is: A high-uniformity crushing system for electrode paste raw materials based on scrap anodes, comprising a first jaw crusher for primary crushing of the scrap anodes; a second jaw crusher for secondary crushing of the scrap anodes; a centrifugal separator for selecting scrap anode particles with suitable particle size; a plurality of material conveyor belts, which are respectively connected in sequence to the discharge port of the first jaw crusher, the feed port of the second jaw crusher, the discharge port of the second jaw crusher, and the feed port of the centrifugal separator; a belt-type iron remover body, which is suspended above any of the material conveyor belts by a bracket; and a dust removal component, comprising a plurality of negative pressure pipes, one end of each of the negative pressure pipes is connected to a negative pressure fan, and the other end is respectively connected to the upper part of the first jaw crusher, the second jaw crusher and the centrifugal separator.

[0005] Preferably, the dust removal assembly also includes a plurality of negative pressure branch pipes, one end of each negative pressure branch pipe is connected to the negative pressure pipe one by one, and the other end of each negative pressure branch pipe extends to one side of the discharge port of the first jaw crusher, the second jaw crusher and the centrifugal separator.

[0006] Preferably, a material guide trough is movably suspended below the discharge port of the first jaw crusher and the second jaw crusher, one end of the material guide trough is inclined downward and extends to the feeding end of the material conveyor belt, a vibration device is provided on one side of the material guide trough, and one end of the negative pressure branch pipe extends to the material guide path of the material guide trough.

[0007] Preferably, a suspension mechanism is provided on the bracket, and the belt-type iron remover body includes a mounting frame and a magnet, the magnet is arranged in the mounting frame, and the bottom of the magnet is flat; the mounting frame is arranged above the material conveyor belt located between the first jaw crusher and the second jaw crusher through the suspension mechanism, and the suspension mechanism keeps the bottom of the magnet at a certain inclination angle obliquely upward away from the transportation direction of the material conveyor belt.

[0008] Preferably, the inclination angle is 10° to 30°.

[0009] Preferably, the suspension mechanism includes at least one pair of telescopic drive rods and a material thickness detection module, the telescopic drive rods are symmetrically distributed on both sides of the mounting frame, and one end of the telescopic drive rod is fixedly connected to the bracket along its axial direction, and the other end is rotatably connected to the mounting frame; the material thickness detection module is arranged on one side of the material conveyor belt between the first jaw crusher and the second jaw crusher, and is used to obtain the material accumulation thickness; the telescopic drive rods are electrically connected to the material thickness detection module, and are used to increase or decrease the height of the bottom of the magnet relative to the material conveyor belt based on the material accumulation thickness.

[0010] Preferably, at least one pair of driving rollers are symmetrically distributed above and below the magnet, and the two ends of the driving rollers are rotatably connected to the mounting frame. The outer cover of the driving roller is provided with an iron removal belt; the top of the mounting frame is fixed with an auxiliary suspension frame through a number of support columns distributed on both sides of the iron removal belt, and a number of flexible suspension parts are symmetrically distributed on both sides of the auxiliary suspension frame, and the two ends of the flexible suspension parts are respectively connected with the auxiliary suspension frame and the bracket by snap-fitting.

[0011] Preferably, the flexible suspension member includes a first connecting rod and a second connecting rod, one end of the first connecting rod and the second connecting rod are each provided with a flexible rope, one end of the flexible rope is connected to a lock, the first connecting rod and the second connecting rod are connected to each other via a thread at one end away from the flexible rope to achieve rotational telescopic cooperation, and the bracket and the opposite side of the auxiliary suspension frame are both buckled with the lock.

[0012] Preferably, a belt cleaning brush is detachably provided on the inner side of the mounting frame, and the belt cleaning brush extends along the axial direction of the driving roller and at least a portion thereof maintains sliding contact with the outer side of the iron removal belt.

[0013] Preferably, a plurality of correcting rollers are rotatably provided on the side of the mounting frame facing away from the transport direction of the material conveyor belt, the axial direction of the correcting rollers is perpendicular to the iron removal belt, and the side edges of the iron removal belt are in rolling contact with the correcting rollers.

[0014] By adopting the above technical solution, compared with the existing technology, this application has at least the following beneficial effects: The recovered large pieces of scrap anode are crushed at least twice by the first jaw crusher and the second jaw crusher, which increases the degree of crushing of the scrap anode and reduces the average particle size of the scrap anode, so as to facilitate the iron removal and dust removal of the scrap anode; the centrifugal separator performs another centrifugal separation on the scrap anode after the secondary crushing to remove scrap anode particles with uneven weight and / or particle size much larger and much smaller than the average particle size in the scrap anode, so as to select scrap anode particles with suitable particle size and uniformity meeting the use requirements; during the above process, the belt-type iron remover body absorbs and screens impurities with high iron content in the material during the process of transporting the scrap anode particles by the material conveyor belt, further improving the purity of the usable material in the scrap anode material; and the dust removal component absorbs and collects the smoke generated or mixed during the first crushing, second crushing and centrifugal separation of the scrap anode, reducing the powder content of the scrap anode particles, so that the scrap anode particles are improved at least in terms of particle size uniformity and quality uniformity, making it conducive to the preparation of high-quality electrode paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the electrode paste raw material high uniformity crushing system in the embodiment.

[0016] Figure 2 This is a partial axonometric diagram of the electrode paste raw material high uniformity crushing system in the embodiment.

[0017] Figure 3 Schematic diagram of the partial structure of the high uniformity crushing system for electrode paste raw materials in the embodiment.

[0018] Figure 4 It is a partial cross-sectional view AA of the high uniformity crushing system of the electrode paste raw material in the embodiment.

[0019] Figure 5 This is a partial enlarged view B of the iron removal system after the electrode paste raw material is crushed in the embodiment (taken from the attached Figure 2 ).

[0020] Figure 6 This is a partial enlarged view C of the iron removal system after the electrode paste raw material is crushed in the embodiment (taken from the attached Figure 1 ).

[0021] In the figure: a first jaw crusher 10, a material guide trough 11, a vibration device 12, a second jaw crusher 20, a centrifugal separator 30, a material conveyor belt 40, a belt-type iron remover body 50, a mounting frame 51, a drive roller 511, an auxiliary suspension frame 512, a correction roller 513, a hanging ring 514, a magnet 52, an iron removal belt 53, a scraper 531, a flexible suspension member 54, a first connecting rod 541, a second connecting rod 542, a flexible rope 543, a lock 544, a belt cleaning brush 55, a buffer mechanism 56, a shock-absorbing cylinder 561, a follower roller 562, a drive motor 57, a bracket 60, a suspension mechanism 61, a telescopic drive rod 611, a material thickness detection module 612, a negative pressure fan 70, a negative pressure pipe 71, a negative pressure branch pipe 72, a dust collecting chamber 80, a floor 81, and a dust collecting hood 82.

[0022] It should be noted that in order to reduce the length of the drawings and to show more details of the present application, the above-mentioned drawings are Figure 4 With attached Figure 6 Partial partitioning and enlargement are performed in the figure to highlight the details of the local structure rather than the actual appearance of the structure, and it does not affect the understanding and description of other structural contents in this application. DETAILED DESCRIPTION

[0023] It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will further describe the technical solution of this application in conjunction with the drawings of the embodiments of this application, and this application is not limited to the following specific implementation methods.

[0024] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of this application, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "back", "top", "bottom", etc. indicating directions or positional relationships, they are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0025] The following is combined with Figure 1 To the attached Figure 6 The present application is further described in detail with reference to specific embodiments.

[0026] The present application discloses a high uniformity crushing system for electrode paste raw materials based on scrap anodes (hereinafter referred to as the "crushing system"), comprising a first jaw crusher 10, a second jaw crusher 20, a centrifugal separator 30, a plurality of material conveyor belts 40, a belt-type iron remover body 50 and a dust removal component, wherein the first jaw crusher 10 and the second jaw crusher 20 are respectively used for primary crushing and secondary crushing of the recycled scrap anode blocks, and the material conveyor belt 40 is sequentially connected to the discharge port of the first jaw crusher 10 and the feed port of the second jaw crusher 20. The belt-type iron remover body 50 is suspended above any of the above-mentioned material conveyor belts 40 through a bracket 60 to remove iron-containing impurities in the residual anode particles passing through the belt-type iron remover on the material conveyor belt 40; the dust removal component includes a negative pressure fan 70 and several negative pressure pipes 71 connected to the negative pressure fan 70, and the ends of the negative pressure pipes 71 away from the negative pressure fan 70 are respectively connected to the upper parts of the first jaw crusher 10, the second jaw crusher 20 and the centrifugal separator 30.

[0027] The use of the above crushing system has at least the following beneficial effects: The recovered large pieces of scrap anode are crushed at least twice by the first jaw crusher 10 and the second jaw crusher 20, which increases the degree of crushing of the scrap anode and reduces the average particle size of the scrap anode, so as to facilitate the iron removal and dust removal of the scrap anode; the centrifugal separator 30 performs another centrifugal separation on the scrap anode after the secondary crushing to remove scrap anode particles with uneven weight and / or particle size much larger and much smaller than the average particle size in the scrap anode, so as to select scrap anode particles with appropriate particle size and uniformity that meets the use requirements; during the above process, the belt-type iron remover body 50 absorbs and screens impurities with high iron content in the material during the process of transporting the scrap anode particles on the material conveyor belt 40, further improving the purity of the usable material in the scrap anode material; and the dust removal component absorbs and collects the smoke generated or mixed during the first crushing, second crushing and centrifugal separation of the scrap anode, reducing the powder content of the scrap anode particles, so that the scrap anode particles are improved at least in terms of particle size uniformity and quality uniformity, making it conducive to the preparation of high-quality electrode paste.

[0028] On the basis of the above-mentioned implementation manner, the present application also provides further embodiments to improve the above-mentioned high-uniformity crushing system of electrode paste raw materials based on residual anodes.

[0029] Furthermore, in order to improve the dust removal efficiency of the above-mentioned dust removal assembly and further reduce the powder content of the residual anode particles, the above-mentioned dust removal assembly also includes a number of negative pressure branch pipes 72, one end of the negative pressure branch pipes 72 is connected to the negative pressure pipes 71 one by one, and the other end of the negative pressure branch pipes 72 extends to one side of the discharge port of the first jaw crusher 10, the second jaw crusher 20 and the centrifugal separator 30 respectively.

[0030] When the above crushing system is used, the negative pressure fan 70 removes dust from the discharge ports of the first jaw crusher 10 , the second jaw crusher 20 and the centrifugal separator 30 through the negative pressure branch pipe 72 during the discharge process.

[0031] Specifically, in order to improve the powder suction effect of the negative pressure branch pipe 72, a material guide trough 11 is movably suspended below the discharge ports of the first jaw crusher 10 and the second jaw crusher 20 through a chain or other flexible suspension parts 54. The material guide trough 11 extends obliquely downward from the bottom of the jaw crusher discharge port to the feeding end of the material conveyor belt 40, and a vibration device 12, such as a vibration motor, is provided on the side of the material guide trough 11 away from its material guide path; and one end of the negative pressure branch pipe 72 extends to the material guide path of the material guide trough 11.

[0032] When using the above-mentioned crushing system, during the unloading process of the first jaw crusher 10 and the second jaw crusher 20 after crushing, the vibration device 12 shakes the guide chute 11 according to the set frequency, and the residual anode particles in the guide chute 11 are dispersed and fall onto the material conveyor belt 40 under the action of shaking. The falling process and the shaking process improve the degree of separation between the residual anode particles and the dust, making it easier for the negative pressure branch pipe 72 to suck out the dust mixed in the residual anode particles.

[0033] In one embodiment, the crushing system further includes a dust collecting chamber 80 arranged underground, wherein the two dust collecting chambers 80 are respectively arranged under the floor 81 on the ground and are interconnected, and the first jaw crusher 10 and the second jaw crusher 20 are respectively arranged in the two dust collecting chambers 80, and dust collecting hoods 82 are respectively arranged above the dust collecting chambers 80, and the dust collecting hoods 82 respectively cover the first jaw crusher 10 and the second jaw crusher 20 and are respectively connected to the negative pressure pipe 71, and the dust collecting hood 82 is detachably connected to the entrance of the dust collecting chamber 80. During the operation of the system, the dust collecting hood 82 closes the dust collecting chamber 80 and facilitates the negative pressure pipe 71 to collect the smoke generated by the first jaw crusher 10 and the second jaw crusher to prevent the smoke from being directly exposed to the working environment. In order to reduce the degree of dust pollution in the air of the working environment, the dust collecting hood 82 is detachably connected so that the dust collecting hood 82 can be opened after shutdown to allow personnel to enter the dust collecting chamber 80 to inspect and repair the jaw crusher; in addition, an iron removal port is provided on the floor 81 between the two dust collecting chambers 80. The iron removal port is located above the transport path of the material conveyor belt 40. A belt-type iron remover body 50 is suspended above the iron removal port through the above-mentioned bracket 60. The discharge end of the material conveyor belt 40 extends to the top of the feed port of the second jaw crusher 20 through the iron removal port; a feed gate can be opened and closed on one side of the dust collecting hood 82 above the first jaw crusher 10. After the feed gate is opened, the outside of the dust collecting hood 82 is connected to the feed port of the first jaw crusher 10, so that the material to be crushed can be fed into the first jaw crusher 10.

[0034] In this embodiment, the dust collecting chamber 80 provided underground and the dust collecting hood 82 above the dust collecting chamber 80 reduce the pollution of the working environment by dust and production noise, and improve the dust removal efficiency of the dust removal system.

[0035] In one embodiment, a suspension mechanism 61 is provided at the top of the above-mentioned bracket 60, and the belt-type iron remover body 50 includes a mounting frame 51 and a magnet 52. The mounting frame 51 is preferably a hollow rectangular frame, and its internal space is used to fix the magnet 52. The magnet 52 includes a permanent magnet or an electromagnet, and its bottom surface is the adsorption surface closest to the material and is flat; the suspension mechanism 61 includes a flexible steel cable, a sling or a rigid hanger and other suspension connection structures, which are used to suspend the mounting frame 51 above the material conveyor belt 40 between the first jaw crusher 10 and the second jaw crusher 20, and the suspension mechanism 61 is used to make the bottom of the magnet 52 maintain a certain inclination angle obliquely upward away from the transportation direction of the material conveyor belt 40.

[0036] When using this system, the residual anode material crushed once by the first jaw crusher 10 is de-ironed by the belt-type de-ironing machine body 50, and because the bottom of the magnet 52 has a certain inclination angle compared to the moving direction of the residual anode material pile, the vertical distance between the top of the iron-containing impurities in the material pile and the bottom of the magnet 52 tends to gradually decrease when passing under the belt-type de-ironing machine body 50. Compared with the prior art arrangement in which the magnet 52 and the material conveyor belt 40 are kept parallel, the inclined magnet 52 makes the magnetic force of the magnet 52 on the iron-containing impurity blocks in the material pile distributed in a gradient along the moving direction of the material. As the impurities with higher iron content in the upper layer of the pile are screened out, the small and medium-sized impurity blocks with less iron content pressed by the material in the lower layer are attracted by the magnet 52 due to the gradually increasing magnetic force and are scraped away from the material transportation direction by the de-ironing belt 53 of the belt-type de-ironing machine body 50. Compared with the prior art, the quality uniformity of the residual anode particles is improved and the content of small iron-containing impurities is reduced.

[0037] Furthermore, the inclination angle between the magnet 52 and the material conveyor belt 40 is preferably set to 10° to 30°.

[0038] Specifically, the present application discloses a comparative analysis of the iron removal efficiency of a set of simulated materials when moving with a magnet 52 parallel to the transport direction and with a magnet 52 tilted relative to the transport direction. The results are shown in the following table: (In the table: the material pile transport speed is 200 mm / s, the initial thickness of the material pile is 200 mm, the average particle size of the material is 30 mm, the impurity iron content is about 0.8%, the standard magnetic field strength at the center of the surface of the magnet 52 is 10,000 Gauss, and the vertical height difference between the center position of the magnet 52 and the initial material pile is 100 mm).

[0039] parameter Parallel magnet 52 10° tilt magnet 52 20° tilt magnet 52 30° tilt magnet 52 40° tilt magnet 52 Efficiency variation range Screening rate of surface iron impurities 91.2％ 93.3％ 94.1％ 91.8％ 87.4％ ＋2.1％～2.9％ Screening rate of iron impurities in the bottom layer 64.5％ 78.2％ 85.3％ 88.4％ 72.8％ ＋8.3％～20.8％ Surface critical adsorption particle size 38mm 39mm 41mm 40mm 38mm ＋2.6％～7.9％ Bottom layer close to adsorption particle size 22mm 20mm 17mm 16mm 19mm -9.1％～22.7％ Magnetic field intensity distribution of the magnet relative to the material at the maximum height difference — Leading edge: 9150 Gauss Trailing edge: 10430 Gauss Leading edge: 8840 Gauss Trailing edge: 11500 Gauss Leading edge: 8270 Gauss Trailing edge: 11830 Gauss Leading edge: 7820 Gauss Trailing edge: 9850 Gauss — It can be seen from the above simulation experiments that when the relative inclination angle of the magnet 52 to the discharge transport direction is 10° to 30°, the screening efficiency of iron-containing impurities is significantly improved compared with the parallel magnet 52. However, when the relative inclination angle reaches 40°, the screening rate of iron-containing impurities on the surface of the material pile has a significant downward trend relative to the parallel magnet 52, indicating that after the magnet 52 is excessively tilted, its magnetic field gradient distribution is too steep, resulting in insufficient effective adsorption area, resulting in a decrease in the screening rate of iron-containing impurities. Therefore, in this embodiment, it is preferred that the inclination angle of the magnet 52 relative to the material transport direction is 10° to 30°.

[0040] Furthermore, in order to enable the belt-type iron remover to adapt to waste anode material piles of different heights, the above-mentioned suspension mechanism 61 includes at least a pair of telescopic drive rods 611 and a material thickness detection module 612. The telescopic drive rods 611 are distributed on both sides of the installation frame 51, and their upper ends are fixedly connected to the bracket 60 in the vertical direction, and the lower ends are rotatably connected to the front and rear sides of the installation frame 51 through rotatable connecting parts such as rotating shafts, ball heads or bearings; the material thickness sensor includes a laser ranging sensor (which measures the thickness of the material pile by detecting the distance from the sensor to the highest point of the material pile), an ultrasonic sensor, etc. The material thickness sensor is arranged on one side of the material conveyor belt 40 located between the above-mentioned first jaw crusher 10 and the second jaw crusher 20, and is used to obtain the thickness value of the waste anode material pile that is about to reach the bottom of the belt-type iron remover body 50. The above-mentioned telescopic drive rods 611 are all electrically connected to the material thickness detection module 612.

[0041] Specifically, the telescopic drive rods 611 are all electric push rods whose telescopic amount can be controlled by a preset program. The connection circuit between the telescopic drive rod 611 and the material thickness detection module 612 is also electrically connected to a controller. The controller includes a storage device, a processor, and a computer program stored in the storage device and run on the above-mentioned processor. The computer program includes controlling the telescopic amount of the telescopic drive rod 611 based on the material thickness value to adjust the height difference between the magnet 52 and the residual anode material pile. In general, the controller controls the telescopic drive rods 611 on both sides of the mounting frame 51 to extend or shorten synchronously based on the material pile thickness value obtained by the material thickness sensor, so as to achieve the purpose of adjusting the distance between the magnet 52 and the material conveyor belt 40, so that the bottom of the belt-type iron remover body 50 can screen out iron-containing impurities in material piles of different thicknesses with an appropriate gradient magnetic field, thereby further improving the quality uniformity of the residual anode particles.

[0042] Furthermore, the above-mentioned belt-type iron remover body 50 also includes a number of drive rollers 511, iron removal belts 53 and a drive motor 57. Specifically, there are preferably four drive rollers 511, and the four drive rollers 511 are symmetrically distributed above and below the magnet 52 and are rotatably connected to the mounting frame 51 through bearings. The fixed end of the drive motor 57 is arranged on one side of the mounting frame 51, and its output shaft establishes a transmission cooperation with one end of any one of the above-mentioned drive rollers 511 through a transmission mechanism such as a pulley and a belt, a gear and a chain, so that the drive motor 57 can drive the drive roller 511 to rotate. The outer side of the four drive rollers 511 is provided with an iron removal belt 53, so that the iron removal belt 53 surrounds the magnet 52, and a scraper 531 is provided on the iron removal belt 53. After the drive motor 57 is started, it drives the iron removal belt 53 to rotate in a circular motion around the four drive rollers 511. The magnet 52 absorbs the iron-containing impurities near the bottom of the iron removal belt 53 from the residual anode particles, and then the scraper 531 on the iron removal belt 53 scrapes the iron-containing impurities to the side deviating from the transport direction of the material conveyor belt 40.

[0043] In one embodiment, in order to ensure that the iron removal belt 53 maintains a safe distance from the top of the bracket 60 during operation and to avoid motion interference between the telescopic drive rod 611 and the iron removal belt 53, the top of the above-mentioned mounting frame 51 is fixed with an auxiliary suspension frame 512 through a number of support columns distributed on both sides of the iron removal belt 53. The auxiliary suspension frame 512 provides an independent operating space for the iron removal belt 53 below. The above-mentioned bracket 60 is composed of two symmetrically arranged door frame-shaped frames, the tops of which are connected by a cross bar, and the two ends of the telescopic drive rod 611 are respectively connected to the cross bar and the auxiliary suspension frame 512, thereby avoiding motion interference between the telescopic drive rod 611 and the iron removal belt 53. In order to improve the safety of the use of the belt-type iron remover body 50, the above-mentioned belt-type iron remover body 50 also includes a number of flexible suspension members 54. Specifically, the flexible suspension members 54 include cables, chains and other connectors that can enable the bracket 60 to establish a flexible connection with the mounting frame 51. The flexible suspension members 54 are symmetrically distributed on both sides of the mounting frame 51. The two ends of the flexible suspension members 54 are respectively connected to the auxiliary suspension frame 512 on the mounting frame 51 and the top of the bracket 60 by snaps to achieve detachable connection. After the belt-type iron remover body 50 establishes a flexible connection with the bracket 60, when the belt-type iron remover body 50 is under maintenance or shut down, the flexible suspension members 54 bear the weight of the belt-type iron remover body 50, reducing the load-bearing burden of the telescopic drive rod 611 and extending its service life.

[0044] In one embodiment, the flexible suspension member 54 includes a first connecting rod 541 and a second connecting rod 542, one end of which is threaded to achieve spiral telescopic engagement, and the other end of each is provided with a flexible cable 543, such as a steel cable, one end of each of which is provided with a lock 544. The bracket 60 and the auxiliary suspension frame 512 are both provided with a hanging ring 514, and the hanging ring 514 is used to achieve a snap connection with the lock 544. By rotating the first connecting rod 541 and the second connecting rod 542 to increase or decrease the distance between the belt-type iron remover body 50 and the bracket 60, the height difference between the belt-type iron remover body 50 and the material pile can be finely controlled beyond the deflection angle that can be adjusted by the telescopic drive rod 611, thereby preventing the magnet 52 from being too high above the material, resulting in insufficient attraction of iron-containing impurities, or preventing the height of the iron removal belt 53 from being too low, resulting in direct contact between the scraper 531 and the waste anode material pile, resulting in screening failure. In addition, in this embodiment, along the material transportation direction, the length of the flexible suspension member 54 on the front side of the mounting frame 51 is longer than the length of the flexible suspension member 54 on the rear side of the mounting frame 51, so that the belt-type iron remover body 50 can maintain a certain inclination angle without being actively adjusted by the telescopic drive rod 611, so as to actively form a magnetic field inclined to the material transportation direction.

[0045] Furthermore, a belt cleaning brush 55 is detachably provided on the inner side of the mounting frame 51. The belt cleaning brush 55 extends along the axial direction of the driving roller 511 and at least part of it maintains sliding contact with the outer side of the iron removal belt 53. Specifically. The belt cleaning brush 55 includes a fixed plate and bristles. The fixed plate extends along the axial direction of the driving roller 511 and its two ends are detachably connected to the inner side of the mounting frame 51 by snaps. The fixed plate is provided with bristles arranged on one side adjacent to the iron removal belt 53. The bristles can remove the dust and material debris adsorbed on the surface of the iron removal belt 53, and prevent the dust and material debris from forming an excessively thick accumulation layer on the outer surface of the iron removal belt 53, so as to avoid attenuation of the magnetic field strength of the magnet 52, thereby ensuring the iron removal efficiency of the iron removal belt 53.

[0046] Furthermore, since the iron removal belt 53 removes iron in an inclined state, in order to avoid the iron removal belt 53 from deviating due to wear or changes in the speed of the drive motor 57 during operation, a plurality of correcting rollers 513 are rotatably provided on one side of the above-mentioned mounting frame 51. The correcting rollers 513 are distributed at the same end of the drive roller 511 and their axial directions are perpendicular to the iron removal belt 53. The side edges of the iron removal belt 53 are in rolling contact with the correcting rollers 513.

[0047] When using the above system, since the material conveyor belt 40 between the first jaw crusher 10 and the second jaw crusher 20 must be arranged upwardly and tilted, the belt-type iron remover body 50 must be arranged so that the side of the mounting frame 51 equipped with the correcting roller 513 is located adjacent to the feeding end of the material conveyor belt 40 (i.e., the correcting roller 513 is located on the lower side). Because the side of the mounting frame 51 that receives the material is tilted downward, the iron removal belt 53 tends to deviate downward along the axis of the drive roller 511. The correcting roller 513 can roll with the iron removal belt 53 as it rotates, preventing it from deviating downward. This ensures that the iron removal belt 53 removes iron-containing impurities in a fixed direction and range, and also ensures the safety of the belt-type iron remover body 50 during production operations.

[0048] Furthermore, when using the above-mentioned system, during the process of the magnet 52 adsorbing iron-containing impurities, the impurities with higher mass will impact the iron removal belt 53 and cause the inner side of the iron removal belt 53 to approach or contact the bottom of the magnet 52. Since the iron removal belt 53 is running at high speed, the impact may cause the iron removal belt 53 to wear faster or the magnet 52 to be damaged. In order to solve the series of problems caused by this phenomenon, a buffer mechanism 56 is provided between the above-mentioned magnet 52 and the iron removal belt 53. Several pairs of buffer mechanisms 56 are distributed between a pair of drive rollers 511 located below the magnet 52, and the inner side of the iron removal belt 53 is in rolling contact with at least part of the buffer mechanism 56. Specifically, the above-mentioned buffer mechanism 56 includes a pair of shock-absorbing cylinders 561 and a follower roller 562. The shock-absorbing cylinders 561 are distributed at both ends of the driving roller 511 and rings are provided at both ends of the shock-absorbing cylinders 561. A rotating shaft is provided on the side of the mounting frame 51, wherein the ring at one end of the shock-absorbing cylinder 561 and the rotating shaft are rotatably connected through a bearing, and the ring at the other end and the two ends of the follower roller 562 are rollingly matched through bearings. Under the rebound action of the shock-absorbing cylinder 561, the inner side of the iron removal belt 53 is always in rolling contact with the follower roller 562.

[0049] When the magnet 52 absorbs impurity blocks with a high iron content, the impact of the impurity blocks on the iron removal belt 53 can be compressed and offset by the shock absorber 561. The rebound of the shock absorber 561 enables the iron removal belt 53 to continuously screen out iron-containing impurities, so that the inner side of the iron removal belt 53 and the magnet 52 always maintain a safe gap, reducing the wear of the magnet 52 or the iron removal belt 53 caused by the impact, and helping to improve the iron removal efficiency.

[0050] In combination with the multiple structures and features in the above-mentioned embodiments, the corresponding functions of the above-mentioned high-uniformity crushing system for electrode paste raw materials based on scrap anodes are improved, so that it can improve the iron removal efficiency and operation safety of the scrap anode materials during the crushing operation, so as to ensure that the scrap anode particles output by the above-mentioned crushing system have higher particle size uniformity and purity.

[0051] Obviously, the above embodiments of the present application are merely examples for the purpose of clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those skilled in the art, other variations or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A high uniformity crushing system for electrode paste raw materials based on residual anodes, characterized by: include: The first jaw crusher is used to crush the remaining anodes; The second jaw crusher is used for secondary crushing of the remaining anodes; Centrifugal separator, used to select residual anode particles with appropriate particle size; a plurality of material conveyor belts, wherein the material conveyor belts are sequentially connected to the discharge port of the first jaw crusher, the feed port of the second jaw crusher, the discharge port of the second jaw crusher, and the feed port of the centrifugal separator; The main body of the belt-type iron remover is suspended above any of the material conveyor belts through a bracket; as well as, A dust removal component, the dust removal component comprising: A plurality of negative pressure pipes, one end of each of the negative pressure pipes is connected to a negative pressure fan, and the other end of each of the negative pressure pipes is respectively connected to the first jaw crusher, the second jaw crusher and the upper part of the centrifugal separator.

2. The electrode paste raw material high uniformity crushing system according to claim 1, characterized in that: The dust removal assembly also includes a plurality of negative pressure branch pipes, one end of each of which is connected to the negative pressure pipes one by one, and the other end of each of which extends to one side of the discharge port of the first jaw crusher, the second jaw crusher and the centrifugal separator.

3. The electrode paste raw material high uniformity crushing system according to claim 2, characterized in that: A material guide trough is movably suspended below the discharge port of the first jaw crusher and the second jaw crusher, one end of the material guide trough is inclined downward and extends to the feeding end of the material conveyor belt. A vibration device is provided on one side of the material guide trough, and one end of the negative pressure branch pipe extends to the material guide path of the material guide trough.

4. The electrode paste raw material high uniformity crushing system according to claim 1, characterized in that: A suspension mechanism is provided on the bracket, and the belt-type iron remover body includes a mounting frame and a magnet. The magnet is arranged in the mounting frame, and the bottom of the magnet is flat. The mounting frame is arranged above the material conveyor belt between the first jaw crusher and the second jaw crusher through the suspension mechanism, and the suspension mechanism enables the bottom of the magnet to maintain a certain inclination angle obliquely upward away from the transportation direction of the material conveyor belt.

5. The electrode paste raw material high uniformity crushing system according to claim 4, characterized in that: The inclination angle is 10° to 30°.

6. The electrode paste raw material high uniformity crushing system according to claim 4, characterized in that: The suspension mechanism includes at least one pair of telescopic drive rods and a material thickness detection module, the telescopic drive rods are symmetrically distributed on both sides of the installation frame, and one end of the telescopic drive rod is fixedly connected to the bracket along its axial direction, and the other end is rotatably connected to the installation frame; the material thickness detection module is arranged on one side of the material conveyor belt between the first jaw crusher and the second jaw crusher, and is used to obtain the material accumulation thickness; the telescopic drive rods are electrically connected to the material thickness detection module, and are used to increase or decrease the height of the bottom of the magnet relative to the material conveyor belt based on the material accumulation thickness.

7. The electrode paste raw material high uniformity crushing system according to claim 6, characterized in that: At least one pair of driving rollers are symmetrically distributed above and below the magnet, and both ends of the driving rollers are rotatably connected to the mounting frame. An iron removal belt is provided on the outer cover of the driving roller. An auxiliary suspension frame is fixed to the top of the mounting frame through a number of support columns distributed on both sides of the iron removal belt. A number of flexible suspension parts are symmetrically distributed on both sides of the auxiliary suspension frame, and both ends of the flexible suspension parts are respectively connected with the auxiliary suspension frame and the bracket by snap-fitting.

8. The electrode paste raw material high uniformity crushing system according to claim 7, characterized in that: The flexible suspension member includes a first connecting rod and a second connecting rod, one end of the first connecting rod and the second connecting rod are each provided with a flexible rope, one end of the flexible rope is connected to a lock, the first connecting rod and the second connecting rod are rotated and telescopically matched through threads at one end away from the flexible rope, and the opposite side of the bracket and the auxiliary suspension frame are both buckled with the lock.

9. The electrode paste raw material high uniformity crushing system according to claim 7, characterized in that: A belt cleaning brush is detachably provided on the inner side of the mounting frame. The belt cleaning brush extends along the axial direction of the driving roller and at least a portion of the belt cleaning brush maintains sliding contact with the outer side of the iron removal belt.

10. The electrode paste raw material high uniformity crushing system according to claim 7, characterized in that: A plurality of correcting rollers are rotatably provided on one side of the installation frame away from the transport direction of the material conveyor belt. The axial direction of the correcting rollers is perpendicular to the iron removal belt, and the side edges of the iron removal belt are in rolling contact with the correcting rollers.

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