Sintered ore loosening system

Abstract

The invention relates to a sintered ore loosening system which comprises a hopper, an unloading winding drum, a nine-roller unloader, a loosening device, a flattening device, an ore paving trolley, a material accumulation layer, a sealing bearing, a loosening device support, a support internal thread, a loosening rod, an unloading opening and a loosening system foundation. A material loosening device system and a material flattening device are arranged on the ore laying trolley, and a material loosening rod is arranged on a material loosening device support. According to the technical scheme, the defects of an existing technical scheme are overcome, the problems that the material loosening rod is high in strength and prone to material caking are fundamentally solved, and the self-cleaning function of the material loosening rod is achieved by adopting the material loosening rod material rubbing technology.

Description

Technical Field

[0001] The present invention relates to a material loosening system, in particular to a sintered ore material loosening system, belonging to the field of sintering equipment control. Background Art

[0002] In the traditional sintering and smelting process, after ores and other ore types are mixed evenly according to the ratio, they are transported by a belt to a discharge hopper and rotate along nine roller devices under the discharge hopper, so that the sintered ores are laid flat on the calcining trolley. In order to ensure uniform calcination on the trolley, the mixed sintered ores are evenly laid flat on the trolley. To ensure its flatness, usually by the action of the side baffles on both sides of the trolley head and the upper material leveling device, the sintered ores are stacked into a shape with equal width and height, which is conducive to the uniform calcination of the sintered ores on the trolley.

[0003] The biggest problem with this sintered ore discharging process is that the materials unloaded by the nine-roller discharger are prone to compaction between the layers. Because when mixing ores and other ore types, a hot water adding process needs to be added, the ores actually entering the sintered ore calcining trolley from the discharge hopper are wet and have strong adhesiveness. Therefore, in order to overcome the deficiencies of this paving process, domestic manufacturers adopt the core process of the material loosening process and add a material loosener. The shape of the material loosener is similar to that of multiple fixed parallel vertical combs, and its teeth are inserted into the laid flat sintered ores. With the action of the trolley transportation, the sintered ore layer is combed and loosened, which has a certain effect on the air permeability of the ore calcination.

[0004] This solution has a fatal defect. During the use of the feeder, sintered ores are easily adhered to the loosening rod, forming huge lump adhesions. Thus, during the process of loosening the laid flat ores, voids appear inside the materials. There is no good solution to this problem in China. Some use robots for cleaning, and some use high-frequency vibration for cleaning. Using robots has too low efficiency because of environmental factors, and the failure rate of robots is higher; high-frequency vibration actually has a worse impact on the laid flat sintered ore layer. When there is adhesive material, high-frequency vibration directly destroys the layer structure; at the same time, due to the action of gravity and the unloaded sintered ores, the loosening rod sags. During the material loosening process, it is not loosening the material layer but equivalent to plowing the material layer. Therefore, there are many deficiencies in the conventional material loosening process, and thus a good material loosening process has also become a technology pursued by major manufacturers.

[0005] Through novelty search, three patents were compared:

[0006] A material loosening device (Publication No.: CN202320151279) mainly introduces a material loosening device. Different from the conventional technology, the material loosening rod is made of 35CrMo and has a hollow internal structure, allowing for gas purging. Analyzing this patent, objectively, the strength of the material loosening rod is still insufficient. Using gas purging can reduce the adhesion of sintered ore, but in actual production, the sintered ore is wet and sticky, which will block the air outlet holes and the internal hollow structure, resulting in poor on-site practicability.

[0007] The material loosener for a sintering machine (Patent No.: 201320335154.7) mainly aims at the problem that the material loosening rods on the material loosener are set too densely, resulting in a large amount of sticky material on the material loosening rods, and the material loosening length of the material loosening rods is too long. Under the action of its own gravity, the material loosening rods are prone to tilt downward. To overcome this deficiency, the patent invented a hollow tubular material loosening rod to increase the strength. Objectively, the strength of the material loosening rod is enhanced, but the problems existing in the actual industry have not been solved. My technical solution solves the problem of insufficient strength of the material loosening rod from material quenching and also solves other problems existing in the industry.

[0008] A self-cleaning device for the material loosening rod of a horizontal material loosener of a sintering machine (Publication No.: CN202222402164) invented a self-cleaning device in view of the easy adhesion of sintered ore to the material loosening rod and the difficulty of cleaning. Its characteristics are: a flat vibrator and a high-temperature protective layer. This solution has been analyzed before. In actual production, using vibration will reduce the material loosening effect and cannot completely solve the self-cleaning function of the material loosening rod.

[0009] In summary, there are four deficiencies in the physical structure of the existing material loosening devices: 1. The material loosening rod is bent. The length of the material loosening rod is basically 2 meters, and the connection point between it and the material loosener body structure is the base welding point. During the unloading process, the stress at the far end is very large, resulting in its bending; 2. The material loosening rod is seriously sticky. Because the material loosening rod is made of ordinary cast iron components, there are two problems, one is wear and the other is stickiness, resulting in poor material loosening effect of the material loosening rod; 3. It is difficult to replace and repair the material loosening rod welded to the material loosener body structure. 4. The problem of cleaning the material loosening rod after caking. Summary of the Invention

[0010] The present invention precisely aims at the problems existing in the prior art and provides a sintered ore material loosening system. This technical solution absorbs the deficiencies of the prior art solutions, fundamentally solves the problems of the strength of the material loosening rod and easy caking, and adopts the material loosening rod rubbing process to achieve the self-cleaning function of the material loosening rod.

[0011] To achieve the above object, the technical solution of the present invention is as follows. A sintered ore loosening system, the loosening system includes a hopper 1, a discharging reel 2, a nine-roll discharger 3, a loosener 4, a leveling device 5, a ore spreading trolley 6, a stacked material layer 7, a sealed bearing 8, a loosener support 9, an internal thread in the support 10, a loosening rod 11, a discharging opening 19, and a loosening system foundation 20. Among them, the discharging reel 2 is arranged between the hopper 1 and the nine-roll discharger 3. The ore spreading trolley 6 is provided with a loosener system 4 and a leveling device 5. The loosener support 9 is provided with a loosening rod 11.

[0012] As an improvement of the present invention, the loosening rod 11 and the loosener support 9 are connected by internal and external threads. The connecting end of the loosening rod uses external threads, and the end of the loosener support uses internal threads. When the loosening rod is turned, the disengagement of the internal and external threads between the loosening rod and the loosener support (9) is realized, which is convenient for operation.

[0013] As an improvement of the present invention, the loosener support (9) and the sealed bearing (8) are in contact through a sealed locking nut (13), which not only ensures the sealing of the bearing but also increases the contact surface between the loosening rod and the loosening foundation (20), realizing the support strength of the gravity of the loosening rod on the loosening body foundation ( Figure 3 In 20), so that the loosening rod above 2 meters is more firmly installed on the loosening foundation.

[0014] As an improvement of the present invention, the impact process of the discharging opening on the loosening rod. The structural surface of the discharging opening (19) and the loosening system foundation (20) has the same width and is directly above the end face of the loosening rod (11). The material in the discharging opening (19) falls on the loosening rod. Since the present invention quenches the loosening rod to increase its stiffness and toughness, it is ensured that the loosening rod will not bend or deform during the impact of the material. At the same time, due to the effect of the surface coating, the probability of adhesion of the mixed sintered ore material is greatly reduced.

[0015] As an improvement of the present invention, the material loosening system includes: a material loosening system base (20), an output shaft end of the material loosener support (14), a support rocker arm (15), a rocker (16), a triangular transmission device 17, and a driving cylinder 18. On the material loosening rod base (20), a bearing device (8) is installed. Through the embedded connection of the bearing, the material loosener support (9) passes through the material loosening system base (20). One end of the material loosener support (9) is connected to a material loosening rod (11) with an external thread through an internal thread, and the other end is the output shaft end of the material loosener support (14). A rocker arm is provided at each output shaft end of the material loosener support (14). Each row of rocker arms is connected through a rocker mechanism, and the two rows of rockers are connected by a triangular transmission device 17. When driven by an external force, all the supports in the two rows rotate synchronously through the rocker arm mechanism. The cylinder structure is used as the power source. The expansion and contraction of the cylinder drive the rocker, the rocker drives the rocker arm, and then it is transmitted to the material loosener support to realize the rotation of the material loosener, so as to realize the 180° rotation of each material loosener.

[0016] The driving cylinder (18) issues an action instruction. The cylinder acts under the drive of the air source. The cylinder drives the rocker (16) device, the rocker device drives each rocker arm (15), and the rocker arm (15) drives the output shaft end of the support of the material loosening rod. Fixed by the bearing, the support (14) and the material loosening rod (11) connected by internal and external threads can only perform circular motion along the center of the bearing. The rockers between rows realize angular displacement conversion through the connected triangular transmission device (17), so as to realize the rotation of the material loosening rod (11) in the sintered ore layer, and thus realize the shedding of the adhesions on the material loosening rod.

[0017] As an improvement of the present invention, the material loosener cross beam and the material loosener support are made of Q345-D material, and the welds are welded continuously by fillet welds in accordance with the provisions of GB / T985, and the leg height is 0.7 times the thickness of the thinner of the welded parts.

[0018] As an improvement of the present invention, the feeder support is annealed as a whole after welding. The material feeding rod is first machined to a surface roughness of 25. To ensure the mechanical strength of the material feeding rod, the material feeding rod is quenched. The specific quenching process includes the following steps: 1. Heating: The material feeding rod is placed in a quenching furnace for heating. The heating temperature is between 830°C and 880°C. 2. Insulation: After reaching the set temperature, the steel needs to be insulated for an appropriate time to ensure uniform overall temperature. 3. Rapid cooling: After insulation, rapid cooling needs to be carried out as soon as possible. Usually, the steel is quenched by putting it into cold water or oil. This step can greatly improve the hardness and wear resistance of the steel. 4. Tempering: The quenched material is prone to internal stress. To relieve this internal stress and improve toughness, the quenched material is tempered. The tempering temperature is generally between 150 and 300 degrees Celsius. The surface hardness of the material feeding rod processed by the quenching process is HRC56 - 62.

[0019] As an improvement of the present invention, to overcome the adhesion of sintered ore to the material feeder, innovations are made in terms of structure and coating. The material feeding rod is made of 2Cr13 cold-drawn and polished round steel. After rough machining, it is solution-treated to HB280 - 320, and then deep hole machining is carried out with a coaxiality of ±0.02. After the material feeding rod is processed, it is surface-hard chromium-plated with a single-side thickness of 20μm ± 2μm, and the hardness of the hard chromium layer is HRC≥58°. The straightness of the surface of the material feeding rod is ±0.02, and the coaxiality is ±0.02. The surface coating of the equipment is manufactured according to the standard of JB / T5000.12 (General Technical Conditions for Machinery - Coating), and the rust removal grade is Sa2.5 (GB / T8923.1). The equipment body uses high-temperature anti-corrosion coating.

[0020] Compared with the prior art, the present invention has the following advantages: 1. In this technical solution, by controlling the material and quenching process of the material feeding rod, the mechanical strength of the material feeding rod is greatly improved, further ensuring the product quality. 2. This solution innovates in terms of structure and coating. After rough machining, it is solution-treated to HB280 - 320, and then deep hole machining is carried out with a coaxiality of ±0.02. After the material feeding rod is processed, it is surface-hard chromium-plated, overcoming the adhesion of sintered ore to the material feeder. 3. The material feeding rod in this technical solution

[0021] adopts a detachable structure, which is convenient for replacing the material feeding rod. The material feeding system is mainly divided into two parts, such as Figure 3, the base part and the material loosening rod part. For each material loosening rod, one end has a threaded structure, and there are several base structures designed on the base of the material loosening system, which have internal threads and can be thread - connected with the material loosening rods to achieve quick replacement. At the same time, the base structure and the body structure are connected by a fully - sealed rolling bearing structure, and each base can rotate along the bearing, so that each material loosening rod structure can rotate in a circular motion along the axis of the bearing; this detachable structure also has a function of freely increasing or decreasing the material loosening rods. In actual production, the data of the material loosening rods will affect the effect of sintered ore laying. By increasing or decreasing the number of material loosening rods, the ideal actual laying effect can be achieved according to different ratios and particle sizes of sintered ore. In actual applications, the rules can be explored to facilitate the adjustment of the number of material loosening rods. 4. This sintered ore material loosening system has an automatic material rubbing function, with a cylinder structure set as the power source. The expansion and contraction of the cylinder drive the rocker, the rocker drives the rocker arm, and then it is transmitted to the support, realizing the rotation of the material loosener, so that each material loosener rotates 180°. In actual production, each material loosening rod is deeply buried in the sintered material layer. When the cylinder drives each material loosening rod to rotate 180° along the axis of the bearing, it is equivalent to each material loosening rod using the friction between the sintered ore and the material loosener to rub the adhesive on the material loosening rod once, realizing the separation of the adhesive. Description of the Drawings

[0022] Figure 1 , Schematic diagram of the sintered ore laying process;

[0023] Figure 2 , Schematic diagram of the detachable structure of the material loosening rod;

[0024] Figure 3 , Schematic diagram of the drive of the material loosening system;

[0025] Figure 4 , Control flow chart of the material loosening system.

[0026] In the figure: 1. Hopper; 2. Discharge reel; 3. Nine - roll discharger; 4. Material loosening system; 5. Leveling device; 6. Ore - laying trolley; 7. Accumulated material layer; 8. Sealed bearing; 9. Material loosener support; 10. Internal thread of the support; 11. Material loosening rod; 12. External thread of the material loosening rod; 13. Sealed locking nut (support body); 14. Output shaft end of the material loosener support; 15. Rocker arm of the support; 16. Rocker; 17. Triangular transmission device of adjacent rocker arms; 18. Cylinder; 19. Simulated discharge port; 20. Foundation of the material loosening system. Detailed Implementation Modes

[0027] To deepen the understanding of the present invention, the following detailed description of this embodiment is given in conjunction with the drawings.

[0028] Embodiment 1: Refer to Figure 1 — Figure 4, a sintered ore loosening system, and the control of the loosening system is as follows Figure 4 After the laying of sintered ore begins, first, the number of loosening rods is adjusted manually according to factors such as the particle size of the sintered ore, and then the rubbing cycle of the loosening rods is set according to the viscosity of the ore. The PLC system drives power sources such as cylinders according to the set cycle to realize the rubbing movement of the loosening rods along the axis, realize the shedding of the binder by the loosening rods, and ensure the smoothness of the loosening rods. After the ore laying stops, the loosening system stops running.

[0029] The specific process is as follows:

[0030] As Figure 1 : In the normal production process, after the sintered ore is evenly mixed, it is transported to the feeding hopper 1, passes through the discharging reel 2, and then through the nine-roll discharging device 3. The material is evenly spread on the sintering trolley 6. With the cooperation of the increase in discharging and the speed of the trolley, the material layer will reach a certain thickness, which is determined by the process standard. When the material layer 7 is spread on the loosener 4, with the operation of the ore-laying trolley 6, the fixed and continuous loosener 4 and the trolley 6 achieve relative movement, playing the role of loosening. The material layer 7 on the trolley forms a flat surface under the action of the leveling device 5 and is calcined into sintered ore.

[0031] As Figure 2 : To achieve the functions of rapid replacement and disassembly of the loosening rods. During production, due to different types of sintered ore materials, when the nine-roll discharging device 3 discharges onto the trolley 6, the number of loosening devices is adjusted according to the particle size of different sintered ores and the requirements of the stacked material layer 7. According to production experience, usually the number of loosening rods at both ends is relatively sparse, and the number in the middle is relatively more. To replace the loosening rods, only need to turn the loosening rod 11. Since the loosening rod and the support are connected by internal and external threads, the connecting end of the loosening rod uses external threads, and the support end uses internal threads. When turning the loosening rod, the internal and external thread disassembly between the loosening rod and the support 9 is realized, which is convenient for operation. The support 9 and the bearing 8 are in contact through the sealing lock nut (support body) 13, which not only ensures the sealing of the bearing but also increases the contact surface between the loosening rod and the loosening base ( Figure 3 in 20), realizing the supporting strength of the gravity of the loosening rod on the loosening body base 20, making the loosening rod installed on the loosening base more firmly above 2 meters.

[0032] As Figure 3:Function of the loosening rod to rub off accumulated materials. Impact process of the discharge opening on the loosening rod. The structural surfaces of the discharge opening 19 and the base 20 of the loosening system have the same width and are directly above the end face of the loosening rod 11. The materials falling from the discharge opening 19 land on the loosening rod. Since the loosening rod of the present invention is quenched to increase its stiffness and toughness, it is ensured that the loosening rod will not bend or deform during the impact of the materials. At the same time, due to the effect of the surface coating, the probability of adhesion of the mixed sintered ore materials is greatly reduced. Due to the adhesion of the sintered ore, there will inevitably be adhesion on the loosening rod. Therefore, during the discharging process, the PLC control system issues commands according to the set cycle, which needs to be determined according to the adhesion situation of the deposits on site and does not need to act too frequently. The command to drive the cylinder 18 to act is issued. The cylinder acts under the drive of the air source. The cylinder drives the rocker device 16. The rocker device drives the rocker arm 15 at the output shaft end of the support of each loosening rod. The rocker arm 14 drives the support 16. Fixed by the bearing, the support 14 and the loosening rod 11 connected by internal and external threads can only make circular motion along the center of the bearing. The rockers between rows are connected by a triangular transmission device 17 to realize the conversion of angular displacement and realize the rotation of the loosening rod 11 in the sintered ore layer, so as to realize the falling off of the adhesion on the loosening rod. Therefore, the features of the present invention are:

[0033] 1. Material and quenching process of the loosening rod: The loosening device system is a typical workpiece continuously scoured by sintered ore. Therefore, its structural strength and the welding of the connecting parts directly affect its quality. Due to continuous production, the maintenance time is relatively short. Therefore, the structure of the loosening device must be strengthened: The crossbeam and support of the loosening device are made of Q345-D material, and the welds must be welded continuously as fillet welds in accordance with the provisions of GB / T985, and the leg height is 0.7 times the thickness of the thinner of the welded parts. Welding is carried out in accordance with the requirements of JB / T5000.3 (General Technical Conditions for Machinery - Welded Parts), and the limit deviations of the length dimension and angle are in Class B, and the geometric tolerances are controlled in Class F. Machining meets the requirements of JB / T5000.9 (General Technical Conditions for Machinery - Machined Parts), the limit deviation of the linear dimension is in Class M, and the geometric tolerances are controlled in Class F. After the welding of the feeder support, the whole is annealed. The loosening rod is first machined to a surface roughness of 25, and in order to ensure the mechanical strength of the loosening rod, the loosening rod is quenched.

[0034] The specific quenching process is as follows: The specific quenching process includes the following steps: 1. Heating: Place the loose material rod into the quenching furnace for heating. The heating temperature is between 830°C and 880°C. 2. Insulation: After reaching the set temperature, the steel needs to be kept at a proper insulation time to ensure uniform overall temperature. 3. Rapid cooling: After insulation, rapid cooling should be carried out as soon as possible. Usually, the steel is quenched by placing it in cold water or oil. This step can greatly improve the hardness and wear resistance of the steel. 4. Tempering: The quenched material is prone to internal stress. To relieve this internal stress and improve toughness, the quenched material is tempered. The tempering temperature is generally between 150 and 300 degrees Celsius. The surface hardness of the loose material rod processed by the quenching process is: HRC 56 - 62.

[0035] 2. Surface coating process: To overcome the adhesion of sintered ore to the loose material device, innovations are made in terms of structure and coating. The loose material rod is made of 2Cr13 cold-drawn and polished round bar. After rough machining, solution treatment is carried out with HB280 - 320, and then deep hole machining is carried out with a coaxiality of ±0.02. After the loose material rod is processed, it is surface-hard chromium-plated with a single-sided thickness of 20μm ± 2μm, a hardness of HRC ≥ 58°, a straightness of the loose material rod surface of ±0.02, and a coaxiality of ±0.02. The surface coating of the equipment is manufactured according to the JB / T5000.12 (General technical conditions for machinery - Coating) standard, with a rust removal grade of Sa2.5 (GB / T8923.1), and the equipment body uses high-temperature anti-corrosion paint.

[0036] 3. Detachable structure: The loose material rods of traditional loose material systems are all welded to the body structure. The present invention adopts a detachable structure, which is convenient for replacing the loose material rods. The loose material system is mainly divided into two parts, such as Figure 3 , the machine base part and the loose material rod part. For each loose material rod, one end has a threaded structure, and several base structures are designed on the machine base of the loose material system, which have internal threads and can be thread-connected with the loose material rod to achieve rapid replacement. At the same time, the base structure and the body structure are connected by a fully sealed rolling bearing structure, and each base can rotate along the bearing, so that each loose material rod structure can rotate in a circular motion along the axis of the bearing. This detachable structure also has a function of freely increasing or decreasing the loose material rods. In actual production, the data of the loose material rods will affect the effect of sintered ore spreading. By increasing or decreasing the number of loose material rods, the ideal actual spreading effect can be achieved according to different ratios and particle sizes of sintered ore. In actual applications, the rules can be explored to facilitate the adjustment of the number of loose material rods.

[0037] 4. Automatic material rubbing function: After the connection part between the material loosening rod and the support is connected by bearings, each support is provided with a rocker arm. Each row of rocker arms is connected through a rocker mechanism, and a triangular movable mechanism is used to connect between two rows of rockers. When driven by an external force, all the supports on the two rows rotate synchronously through the rocker arm mechanism. A cylinder structure is set as the power source. The expansion and contraction of the cylinder drives the rocker, the rocker drives the rocker arm, and then conducts to the support to realize the rotation of the material loosener, so that each material loosener rotates 180°.

[0038] In actual production, each material loosening rod is buried deep in the sintered material layer. When the cylinder drives each material loosening rod to rotate 180° along the axis of the bearing, it is equivalent to each material loosening rod using the friction between the sintered ore and the material loosener to rub the adhesive on the material loosening rod once, realizing the detachment of the adhesive.

[0039] It should be noted that the above embodiments are not used to limit the protection scope of the present invention. Any equivalent transformation or substitution made on the basis of the above technical solutions falls within the protection scope of the claims of the present invention.

Claims

1. A sintered ore loosening system, characterized in that, the loosening system includes a hopper, a discharging reel, a nine-roller discharger, a loosener, a leveling device, a ore-laying trolley, a stacked material layer, a sealed bearing, a loosener support, an internal thread in the support, a loosening rod, a discharging opening and a loosening system foundation, wherein the discharging reel is arranged between the hopper and the nine-roller discharger, a loosener system and a leveling device are arranged on the ore-laying trolley, and a loosening rod is arranged on the loosener support.

2. The sintered ore loosening system according to claim 1, characterized in that, the loosening rod 11 and the loosener support 9 are connected by internal and external threads. The connecting end of the loosening rod has an external thread, and the end of the loosener support has an internal thread. When screwed onto the loosening rod, the disengagement of the internal and external threads between the loosening rod and the loosener support (9) is realized, which is convenient for operation.

3. The sintered ore loosening system according to claim 1, characterized in that, the loosener support (9) and the sealed bearing (8) are in contact through a sealed locking nut (13).

4. The sintered ore loosening system according to claim 1, characterized in that, the structural surface of the discharging opening (19) and the loosening system foundation (20) has the same width and is directly above the end face of the loosening rod (11). The material falls from the discharging opening (19) onto the loosening rod.

5. The sintered ore loosening system according to claim 1, characterized in that, the loosening system includes: a loosening system foundation (20), an output shaft end of the loosener support (14), a support rocker arm (15), a rocker (16), a triangular transmission device 17 and a driving cylinder 18. On the loosening rod foundation (20), a bearing device (8) is installed. Through the embedded connection of the bearing, the loosener support (9) passes through the loosening system foundation (20). One end of the loosener support (9) is connected to the loosening rod (11) with an external thread through an internal thread, and the other end is the output shaft end of the loosener support (14). A rocker arm is arranged at each output shaft end of the loosener support (14). The rocker arms in each row are connected through a rocker mechanism, and the two rows of rockers are connected by a triangular transmission device 17. When driven by an external force, all the supports in the two rows rotate synchronously through the rocker arm mechanism. The cylinder structure is used as the power source. The expansion and contraction of the cylinder drive the rocker, the rocker drives the rocker arm, and then it is transmitted to the loosener support to realize the rotation of the loosener, so as to realize the 180° rotation of each loosener. When the driving cylinder (18) issues an action instruction, the cylinder acts under the drive of the air source. The cylinder drives the rocker (16) device, the rocker device drives each rocker arm (15), and the rocker arm (15) drives the output shaft end of the support of the loosening rod. Fixed by the bearing, the support (14) and the loosening rod (11) connected by internal and external threads can only make a circular motion along the center of the bearing. The rockers between rows realize the angular displacement conversion through the connected triangular transmission device (17), realize the rotation of the loosening rod (11) in the sintered ore layer, and thus realize the shedding of the adhesives on the loosening rod.

6. The sintered ore loosening system according to claim 1, characterized in that, The crossbeam and support of the material loosener are made of Q345-D material, and the welds are welded with continuous fillet welds in accordance with the provisions of GB / T985. The leg height of the weld is 0.7 times the thickness of the thinner of the welded parts.

7. The sintered ore material loosening system according to claim 6, characterized in that After welding, the support of the feeder is subjected to overall annealing treatment. The material loosening rod is first machined to a surface roughness of 25. In order to ensure the mechanical strength of the material loosening rod, the material loosening rod is quenched; the specific quenching process includes the following steps: (1) Heating: The material loosening rod is placed in a quenching furnace for heating, and the heating temperature is between 830°C and 880°C. (2) Insulation: After reaching the set temperature, the steel needs to be kept warm for an appropriate time to ensure that its overall temperature is uniform. (3) Rapid cooling: After the insulation is completed, rapid cooling needs to be carried out as soon as possible. Usually, the steel is quenched by putting it into cold water or oil. This step can greatly improve the hardness and wear resistance of the steel. (4) Tempering: The quenched material is prone to internal stress. In order to relieve this internal stress and improve toughness, the quenched material is tempered. The tempering temperature is generally between 150 and 300 degrees Celsius. The surface hardness of the material loosening rod processed by the quenching process is: HRC 56-62.

8. The sintered ore material loosening system according to claim 3, characterized in that The material loosening rod is made of 2Cr13 cold-drawn and polished round bar. After rough machining, it is solution-treated to HB280-320, and then deep hole machining is carried out with a coaxiality of ±0.

02. After the material loosening rod is processed, it is surface-hardened by chromium plating with a single-side thickness of 20μm ± 2μm, a hardness of HRC ≥ 58°, a straightness of the surface of the material loosening rod of ±0.02, and a coaxiality of ±0.02.

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