Nickel slag micro-grinding device

Abstract

The utility model relates to the technical field of nickel slag treatment, and discloses a nickel slag micro-grinding device which comprises a ball mill used for micro-grinding nickel slag, an inclined feeding pipe is rotatably connected to a feeding port of the ball mill, and the inclined feeding pipe is communicated with a feeding hopper with a cover; a discharge hole of the ball mill is rotationally sleeved with an inclined discharge cover; a combined lining plate is installed on the inner wall face of a grinding cylinder on the ball mill and comprises a rubber lining plate body capable of being independently detached, a metal lining plate body used for supporting and a rubber cushion plate filled in a concave groove in the outer portion of the metal lining plate body, and the rubber cushion plate can absorb and buffer impact force generated in the grinding process. And direct impact on the inner wall of the grinding cylinder is reduced. The metal lining plate ensures that the rubber lining plate can bear the force in the grinding process. The metal lining plate can bear high load and impact force. And the rubber lining plate subjected to high-pressure vulcanization treatment has very high wear resistance and is convenient and rapid to replace.

Description

Technical Field

[0001] This utility model belongs to the field of nickel slag treatment technology, specifically relating to a nickel slag micro-grinding device. Background Technology

[0002] In nickel slag processing, micro-grinding is a commonly used physical method to improve the fineness and utilization rate of nickel slag. Ball mills, as a type of micro-grinding equipment, are widely used in industries such as minerals, chemicals, and metallurgy. Traditional ball mills achieve material grinding through the friction and impact between the grinding media and the material. However, due to the highly corrosive and hard characteristics of nickel slag, higher requirements are placed on the wear and corrosion resistance of the ball mill liners.

[0003] Existing nickel slag micro-grinding ball mills typically consist of a grinding cylinder lined with plates on its inner wall. Material enters the grinding cylinder through the feed inlet and is ground by the grinding media. The discharge outlet is used to discharge the ground material. Most existing ball mills use straight-in / straight-out feed inlets and outlets, which can easily lead to material splashing and leakage. The liners are often made of a single material, such as high-manganese steel, which may have limitations in terms of wear resistance and corrosion resistance.

[0004] In view of this, we propose a nickel slag micro-grinding device to solve the above problems. Utility Model Content

[0005] The present invention aims to solve the technical problems in the prior art, such as the tendency of material splashing in ball mills with straight inlet and outlet, and the need to improve the wear resistance of high manganese steel liners.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nickel slag micro-grinding device includes a ball mill for micro-grinding nickel slag, an inclined feed pipe rotatably connected to the feed inlet of the ball mill, the inclined feed pipe being connected to a covered feed hopper; and an inclined discharge hood rotatably fitted to the discharge outlet of the ball mill.

[0008] A composite liner is installed on the inner wall of the grinding cylinder of the ball mill. The composite liner includes a separate detachable rubber liner that is located on the outer layer and has undergone high-pressure vulcanization treatment, a metal liner that is located on the inner layer and is used for support, and a rubber pad that is located between the inner wall of the grinding cylinder and the metal liner and is filled in the concave groove on the outside of the metal liner. The rubber pad and the metal liner are fixed to the inner wall of the grinding cylinder by bolt A, and the rubber liner is fixed to the metal liner by bolt B.

[0009] Rubber pads absorb and cushion the impact forces generated during grinding, reducing direct impact on the inner wall of the grinding cylinder and protecting the cylinder. Metal liners provide the main support, ensuring the rubber liners can withstand the forces during grinding. Metal liners have high hardness and strength, capable of withstanding high loads and impacts. High-pressure vulcanized rubber liners have high wear resistance, effectively reducing wear and allowing for quick and easy replacement.

[0010] Preferably, the composite liner is a corrugated liner. This reduces the contact area between the composite liner and the abrasive media, thereby lowering the wear rate.

[0011] Preferably, the outer surface of the rubber liner has a groove. When the metal liner and the rubber liner are joined, the protrusion on the metal liner engages with the groove. This engagement increases the connection strength between the rubber liner and the metal liner.

[0012] Preferably, both the metal liner and the rubber pad are provided with several through holes for the mating bolts A to pass through, and the metal liner is provided with a hidden hole A for the nut on the mating bolt A to be concealed.

[0013] Preferably, after bolt A passes through the metal liner, rubber pad and grinding cylinder from the inside to the outside, the metal liner and rubber pad are fixed to the grinding cylinder by a washer, a steel cup rubber pad and a screw cap arranged from the inside to the outside on the outside of the grinding cylinder and cooperating with bolt A.

[0014] The design of the through hole and hidden hole A in conjunction with bolt A makes the replacement and maintenance of the liner plate more convenient.

[0015] Preferably, the rubber pad has two rectangular slots for inserting mating rubber blocks. The rectangular slots and the two protrusions in the middle are provided with threaded holes for mating bolts B. The rubber blocks are provided with hidden holes B for hiding the nuts on the mating bolts B.

[0016] Bolt B passes through the rubber block and rectangular groove sequentially from the inside out, and then is threaded into the threaded hole of the protrusion, thereby fixing the rubber block and rubber pad to the metal backing plate. Fixing the rubber block with bolt B ensures that worn rubber blocks can be quickly replaced, and the threaded connection of bolt B ensures the stability of the fixation between the rubber block, rubber pad, and metal backing plate.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are:

[0018] The ball mill in this nickel slag micro-grinding device optimizes the material feeding and discharging process by utilizing gravity through the design of an inclined feed pipe and an inclined discharge hood. The inclined feed pipe reduces material blockage and stagnation during the feeding process, improving feeding efficiency; while the inclined discharge hood ensures smooth discharge of ground material, reducing congestion and improving production efficiency. This design not only improves the overall efficiency of the grinding process but also reduces material splashing through the covered feed hopper, ensuring operational safety.

[0019] The corrugated design of the composite liner reduces the contact area with the grinding media, effectively lowering the wear rate. Simultaneously, the corrugated structure promotes material flow and grinding media movement, improving grinding efficiency. Composed of rubber liners, metal liners, and rubber pads, and secured with bolts, the composite liner provides excellent wear resistance and impact resistance, protects the inner wall of the grinding cylinder, reduces noise, and improves maintenance efficiency and reduces costs through quick replacement of worn rubber blocks.

[0020] The interlocking of the protrusions and grooves between the rubber and metal liners enhances connection strength and stability, simplifying the installation process. The bolt insertion holes and concealed holes on both the metal and rubber liners facilitate liner replacement and maintenance, reducing exposed bolts, improving sealing, and preventing material leakage. Furthermore, the rectangular slots and bolt B design on the rubber pads ensure quick and easy replacement and adjustment of the rubber blocks, enhancing the liner's adaptability and flexibility while maintaining stability. These design optimizations improve the ball mill's operational performance and reliability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the ball mill of this utility model;

[0022] Figure 2 This is a schematic diagram of the material outlet structure of this utility model;

[0023] Figure 3 This is a first-view view of the combined liner of this utility model;

[0024] Figure 4 This is a second-view view of the combined liner of this utility model;

[0025] Figure 5 This is a first exploded view of the combined liner of this utility model;

[0026] Figure 6 This is a second exploded view of the combined liner of this utility model.

[0027] In the diagram: 1. Ball mill; 2. Feed inlet; 3. Inclined feed pipe; 4. Feed hopper; 5. Discharge outlet; 6. Inclined discharge hood; 7. Combined liner; 8. Rubber liner; 9. Metal liner; 10. Concave groove; 11. Rubber pad; 12. Bolt A; 13. Grinding cylinder; 14. Bolt B; 15. Groove; 16. Protrusion; 17. Through hole; 18. Hidden hole A; 19. Gasket; 20. Steel cup rubber pad; 21. Nut; 22. Rectangular groove; 23. Rubber block; 24. Threaded hole; 25. Hidden hole B. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application discloses a nickel slag micro-grinding device, including a ball mill 1 for micro-grinding nickel slag. An inclined feed pipe 3 is rotatably connected to the feed inlet 2 of the ball mill 1, and the inclined feed pipe 3 is connected to a covered feed hopper 4. An inclined discharge hood 6 is rotatably fitted to the discharge outlet 5 of the ball mill 1. The inclined feed pipe 3 allows material to enter the ball mill 1 more smoothly under gravity, reducing blockage and stagnation during feeding and improving feeding efficiency. The connection between the feed pipe and the covered feed hopper 4 helps prevent material from splashing out during feeding, and the inclined discharge hood 6 allows the ground material to be discharged smoothly under gravity, reducing congestion during discharge. The design of the inclined discharge hood 6 reduces the time material spends inside the ball mill 1, thereby improving production efficiency.

[0031] A combined liner 7, which is corrugated, is installed on the inner wall of the grinding cylinder 13 of the ball mill 1. This reduces the contact area between the combined liner 7 and the grinding media, thus lowering the wear rate. The corrugated structure facilitates the flow of material within the ball mill 1, improving grinding efficiency. The corrugated liner also increases the jumping and falling of the grinding media, thereby enhancing the grinding effect.

[0032] The composite liner 7 includes an outer, separately detachable rubber liner 8 that has undergone high-pressure vulcanization, an inner metal liner 9 for support, and a rubber pad 11 located between the inner wall of the grinding cylinder 13 and the metal liner 9, filling the external concave groove 10 of the metal liner 9. The rubber pad 11 contacts the inner wall of the grinding cylinder 13. The rubber liner 8, metal liner 9, and rubber pad 11 constitute the composite liner 7. The rubber pad 11 can absorb and buffer the impact force generated during grinding, reducing direct impact on the inner wall of the grinding cylinder 13 and protecting the cylinder. The rubber material has good sound absorption properties, which can reduce the noise of the ball mill 1 during operation. The rubber pad 11 has good wear resistance and can withstand the wear of the grinding media. The rubber pad 11 is designed as a replaceable wear block, which can be quickly replaced after wear, improving maintenance efficiency and reducing maintenance costs.

[0033] The metal liner 9 provides primary support, ensuring the rubber liner 8 can withstand the forces during the grinding process. The metal liner 9 possesses high hardness and strength, enabling it to withstand high loads and impacts. The metal liner 9 has a long service life and is resistant to wear, providing stable long-term operation for the ball mill 1. The metal liner 9 is secured with bolts, ensuring a tight fit between the liner and the inner wall of the grinding cylinder 13, improving overall stability.

[0034] The rubber liner 8, treated with high-pressure vulcanization, possesses high wear resistance, effectively reducing wear. It absorbs impact energy, protecting the internal structure of the ball mill 1 from damage. Relatively flexible, the rubber liner 8 can adapt to the irregular shape of the grinding cylinder 13's inner wall, providing better protection. The rubber liner 8 is fixed to the metal liner 9 by bolts B14, allowing for convenient and quick replacement.

[0035] Overall, this combined liner 7 design can fully leverage the advantages of both rubber and metal, providing better wear resistance, impact resistance, and maintainability, thereby extending the service life of the ball mill 1 and reducing operating costs.

[0036] The rubber pad 11 and the metal liner 9 are fixed to the inner wall of the grinding cylinder 13 by bolts A12, and the rubber liner 8 is fixed to the metal liner 9 by bolts B14.

[0037] The outer side of the rubber liner 8 has a groove 15. When the metal liner 9 is mated with the rubber liner 8, the protrusion 16 on the metal liner 9 engages with the groove 15. The engagement of the protrusion 16 with the groove 15 increases the connection strength between the rubber liner 8 and the metal liner 9, improving the overall stability of the liner. This design makes the installation of the liner simpler and faster.

[0038] Both the metal liner plate 9 and the rubber pad plate 11 have corresponding through holes 17 for the mating bolts A12 to pass through, and the metal liner plate 9 has a hidden hole A18 for the nuts on the mating bolts A12 to be concealed. After the bolts A12 pass through the metal liner plate 9, the rubber pad plate 11 and the grinding cylinder 13 from the inside to the outside, the metal liner plate 9 and the rubber pad plate 11 are fixed to the grinding cylinder 13 by a washer 19, a steel cup rubber pad 20 and a nut 21 arranged from the inside to the outside of the grinding cylinder 13 and mating with the bolts A12.

[0039] The design of the through hole 17 and the concealed hole A18 for bolt A12 makes the replacement and maintenance of the liner plate more convenient. The concealed hole design reduces the exposed part of bolt A12, allowing for better mating of the metal liner plate 9 and the rubber liner plate 8. Bolt A12 passes through the metal liner plate 9, the rubber pad 11, and the grinding cylinder 13, and is secured by the gasket 19, the steel cup rubber gasket 20, and the nut 21, ensuring that the liner plate is firmly installed on the grinding cylinder 13, providing a double sealing effect and preventing material leakage.

[0040] The rubber pad 11 has two rectangular slots 22 for inserting mating rubber blocks 23. Threaded holes 24 for mating bolts B14 are provided on the rectangular slots 22 and the two protrusions 16 in the middle. The rubber blocks 23 have concealed holes B25 for the nuts on the bolts B14. The bolts B14 pass through the rubber blocks 23 and the rectangular slots 22 from the inside out, and are threaded into the threaded holes 24 of the protrusions 16, thus fixing the rubber blocks 23 and the rubber pad 11 to the metal liner 9. Fixing the rubber blocks 23 with bolts B14 ensures that worn rubber blocks 23 can be quickly replaced without affecting the overall use of the liner. The design of the rectangular slots 22 allows the rubber blocks 23 to be adjusted or replaced when necessary, improving the adaptability and flexibility of the liner. The threaded connection of the bolts B14 ensures the stability of the fixing of the rubber blocks 23 to the rubber pad 11 and the metal liner 9, preventing loosening during operation.

[0041] The ball mill 1 in this nickel slag micro-grinding device adopts an inclined feed pipe 3 and an inclined discharge hood 6. This structure allows materials to enter and exit the ball mill 1 more smoothly under the action of gravity, effectively reducing blockages and stagnation during the feeding and discharging process, and improving feeding efficiency and production efficiency. At the same time, the covered feed hopper 4 avoids material splashing during feeding, protecting operational safety, while the inclined discharge hood 6 ensures that the ground material can be discharged smoothly, further improving the efficiency and stability of the overall grinding process.

[0042] The corrugated design of the composite liner 7 reduces the contact area with the grinding media, lowers the wear rate, and increases the jumping and falling of the grinding media, thus improving the grinding effect. This liner structure consists of an outer rubber liner 8, an inner metal liner 9, and a middle rubber pad 11, which are fixed with bolts. It provides good wear resistance and impact resistance, protects the inner wall of the grinding cylinder 13 from direct impact, reduces noise, improves maintenance efficiency, and lowers maintenance costs.

[0043] The protrusions 16 and grooves 15 of the rubber liner 8 and metal liner 9 fit together, increasing connection strength and stability and simplifying the installation process. The bolt insertion holes 17 and concealed holes on the metal liner 9 and rubber pad 11 make liner replacement and maintenance more convenient, while also reducing exposed bolt portions, improving sealing performance and preventing material leakage. Furthermore, the rectangular slot 22 and bolt B14 design on the rubber pad 11 ensure that the rubber block 23 can be quickly replaced and easily adjusted, enhancing the liner's adaptability and flexibility while maintaining stable fixation.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nickel slag microgrinding device comprising a ball mill (1) for microgrinding of nickel slag, characterized in that, A slanted feeding pipe (3) is rotatably connected to the feeding port (2) of the ball mill (1), and the slanted feeding pipe (3) is connected to a feeding hopper (4) with a cover; a slanted discharging cover (6) is rotatably sleeved to the discharging port (5) of the ball mill (1); A combined lining plate (7) is mounted on the inner wall of the grinding cylinder (13) of the ball mill (1), the combined lining plate (7) comprises a rubber lining plate (8) which is located at the outer layer and can be separately detached after high-pressure vulcanization treatment, a metal lining plate (9) which is located at the inner layer and used as a support, and a rubber pad plate (11) which is located between the inner wall of the grinding cylinder (13) and the metal lining plate (9) and filled in the outer concave groove (10) of the metal lining plate (9), the rubber pad plate (11) and the metal lining plate (9) are fixed on the inner wall of the grinding cylinder (13) by bolts A (12), and the rubber lining plate (8) is fixed on the metal lining plate (9) by bolts B (14).

2. The nickel slag micro-grinding device according to claim 1, characterized in that: The combined lining plate (7) is a wave-shaped lining plate.

3. The nickel slag micro-grinding device according to claim 1, characterized in that: A groove position (15) is formed on the outer side of the rubber lining plate (8), when the metal lining plate (9) is butted against the rubber lining plate (8), the protrusions (16) on the metal lining plate (9) are inserted into the groove position (15) in cooperation.

4. The nickel slag micro-grinding device according to claim 1, characterized in that: A plurality of insertion holes (17) corresponding to the bolts A (12) are formed on the metal lining plate (9) and the rubber pad plate (11), and a hidden hole position A (18) hidden by the nut of the bolt A (12) is formed on the metal lining plate (9).

5. The nickel slag microgrinding device according to claim 4, characterized in that: After the bolt A (12) passes through the metal lining plate (9), the rubber pad plate (11) and the grinding cylinder (13) from inside to outside, the metal lining plate (9) and the rubber pad plate (11) are fixed on the grinding cylinder (13) by a gasket (19), a steel bowl rubber pad (20) and a screw cap (21) which are sequentially arranged from inside to outside and cooperate with the bolt A (12) and are located outside the grinding cylinder (13).

6. The nickel slag microgrinding device according to claim 3, characterized in that: Two rectangular notches (22) corresponding to the rubber blocks (23) are formed on the rubber pad plate (11), threaded holes (24) corresponding to the threaded connection of the bolts B (14) are formed on the rectangular notches (22) and the two protrusions (16) in the middle, and hidden hole positions B (25) hidden by the nuts of the bolts B (14) are formed on the rubber blocks (23); After the bolt B (14) passes through the rubber blocks (23) and the rectangular notches (22) from inside to outside, the bolt B (14) is threadedly connected into the threaded holes (24) of the protrusions (16), and then the rubber blocks (23) and the rubber pad plate (11) are fixed on the metal lining plate (9).

Images