A liner for a semi-autogenous ball mill for metal ore

Abstract

This utility model discloses a liner for a semi-autogenous grinding ball mill for metal ores, comprising a semi-autogenous grinding cylinder. Multiple sets of separating mechanisms are arranged on the inner wall of the semi-autogenous grinding cylinder, and a fixing plate mechanism is arranged on the inner wall of the semi-autogenous grinding cylinder between two adjacent separating mechanisms. The fixing plate mechanism includes multiple arc-shaped liners. In this utility model, through the interaction of the semi-autogenous grinding cylinder, the separating mechanisms, and the fixing plate mechanism, the arc-shaped liners are connected to the cylinder using limiting bolts in the fixing plate mechanism. Each liner can be independently disassembled and installed without affecting other components, greatly simplifying the replacement process. The annular array distribution and contact design with adjacent liners assist in rapid positioning and installation. Simultaneously, the uniform spacing of the grinding teeth ensures consistent force on the ore. The separating mechanisms are adapted to the inner contour of the liners, reducing material retention and improving grinding uniformity, while also considering ease of maintenance and equipment operational stability.

Description

Technical Field

[0001] This utility model relates to the field of metal ore processing equipment technology, and in particular to a liner for a semi-autogenous grinding ball mill for metal ore. Background Technology

[0002] In metal ore beneficiation and processing, the semi-autogenous ball mill is the core equipment for ore crushing and grinding. It refines materials through the impact and friction between the grinding media and the ore within the mill cylinder, providing ore of suitable particle size for subsequent beneficiation processes. The liner, as a key protective component of the ball mill cylinder's inner wall, not only needs to withstand the continuous wear and tear from the ore and media but also needs to guide material movement through its structure to enhance the grinding effect. It is widely used in the large-scale processing of metal ores such as copper and iron, playing a vital role in improving beneficiation efficiency and reducing equipment wear.

[0003] In practical use, traditional liners for semi-autogenous grinding ball mills of metal ores have complex connection methods with the cylinder, requiring the removal of numerous related components during disassembly, which is cumbersome and time-consuming. Furthermore, the lack of clear positioning benchmarks during replacement makes it easy for new liners to deviate from their intended position, affecting subsequent grinding effects. Some liners also employ an integral structure, requiring the entire liner to be replaced if a single piece is damaged, increasing material costs and further extending maintenance time, making it difficult to meet the demands of high-efficiency production. Therefore, we propose a new type of liner for semi-autogenous grinding ball mills of metal ores to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and to propose a liner for a semi-autogenous grinding ball mill for metal ores.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A liner for a semi-autogenous grinding ball mill for metal ore includes a semi-autogenous grinding cylinder. Multiple sets of partitioning mechanisms are provided on the inner side wall of the semi-autogenous grinding cylinder, and a fixing plate mechanism is provided on the inner side wall of the semi-autogenous grinding cylinder between two adjacent partitioning mechanisms.

[0007] The fixed plate mechanism includes multiple arc-shaped liners. The semi-self-grinding cylinder and the arc-shaped liners are fixed together by multiple limiting bolts. The outer walls of two adjacent arc-shaped liners in the same row are in contact with each other. Multiple arc-shaped liners are arranged in a ring array on the inner wall of the semi-self-grinding cylinder in the longitudinal plane. Multiple grinding protrusions are fixedly installed on the inner side wall of the arc-shaped liners.

[0008] Preferably, the separating mechanism includes multiple mounting slots formed on the inner sidewall of the semi-autogenous grinding cylinder. The mounting slots are located on the inner sidewall of the semi-autogenous grinding cylinder between two adjacent rows of arc-shaped liners. A mounting plate is slidably connected to the inner sidewall of the mounting slot. The semi-autogenous grinding cylinder and the mounting plate are fixedly connected by multiple sets of fixing bolts. An anti-slip outer arc block is fixedly installed on the inner sidewall of the mounting plate facing the center of the semi-autogenous grinding cylinder.

[0009] Preferably, the distance between two adjacent grinding protrusions on the vertical plane of the same arc-shaped liner is set to be the same.

[0010] Preferably, the outer wall of the semi-self-grinding cylinder is provided with multiple limiting holes for the limiting bolts to pass through, and the outer wall of the semi-self-grinding cylinder is provided with multiple limiting grooves for the fixing bolt pairs to pass through.

[0011] Preferably, the outer wall of the arc-shaped liner is provided with a plurality of threaded holes adapted to the limiting bolts, and the limiting bolts are threadedly connected to the inner wall of the threaded holes.

[0012] Preferably, the plurality of mounting slots are arranged in a ring array on the inner sidewall of the semi-self-grinding cylinder.

[0013] Preferably, the inner contour of the arc-shaped liner and the inner contour of the anti-slip outer arc block are coaxially arranged.

[0014] The beneficial effects of this utility model are as follows:

[0015] Through the interaction of the semi-autogenous grinding cylinder, the separating mechanism, and the fixed plate mechanism, the arc-shaped liner is connected to the cylinder by limit bolts in the fixed plate mechanism. Each liner can be disassembled and installed independently without affecting other parts, greatly simplifying the replacement process. The ring array distribution and contact design with adjacent liners assists in quick positioning and installation. At the same time, the uniform spacing of the grinding teeth ensures consistent force on the ore. The separating mechanism is adapted to the inner contour of the liner to reduce material retention and improve grinding uniformity, taking into account both maintenance convenience and equipment operation stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a semi-autogenous ball mill liner for metal ore proposed in this utility model;

[0017] Figure 2 This is a side sectional view of the semi-autogenous grinding cylinder in a semi-autogenous grinding ball mill liner for metal ores proposed in this utility model;

[0018] Figure 3 This is a side view of the semi-autogenous grinding cylinder in a semi-autogenous grinding ball mill liner for metal ores, as proposed in this utility model.

[0019] In the diagram: 1. Semi-self-grinding cylinder; 2. Arc-shaped liner; 3. Limiting bolt; 4. Grinding teeth; 5. Mounting groove; 6. Mounting plate; 7. Fixing bolt pair; 8. Anti-slip outer arc block; 9. Limiting hole; 10. Limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 A liner for a semi-autogenous grinding ball mill for metal ore includes a semi-autogenous grinding cylinder 1. Multiple sets of partitioning mechanisms are provided on the inner wall of the semi-autogenous grinding cylinder 1, and a fixing plate mechanism is provided on the inner wall of the semi-autogenous grinding cylinder 1 between two adjacent partitioning mechanisms. The fixing plate mechanism includes multiple arc-shaped liners 2. The semi-autogenous grinding cylinder 1 and the arc-shaped liners 2 are fixedly connected by multiple limiting bolts 3. The outer walls of two adjacent arc-shaped liners 2 in the same row are in contact with each other. Multiple arc-shaped liners 2 are arranged in a ring array on the inner wall of the semi-autogenous grinding cylinder 1 in the longitudinal plane. Multiple grinding protrusions 4 are fixedly installed on the inner wall of the arc-shaped liners 2.

[0022] To further explain, the multiple partitioning mechanisms divide the interior of the semi-autogenous grinding cylinder 1 into multiple regions. The fixing plate mechanism fixes the arc-shaped liner 2 to the inner wall of the cylinder through the limiting bolts 3. The outer walls of adjacent arc-shaped liners 2 in the same row are in close contact. The longitudinally arranged annular array structure makes the liner form a continuous and stable protective layer, effectively resisting the impact and wear of ore. The grinding teeth 4 on the inner wall of the arc-shaped liner 2 increase the friction coefficient, enhance the grinding effect on ore, and improve the working efficiency of the ball mill.

[0023] like Figure 1 and Figure 2 As shown, the separating mechanism includes multiple mounting slots 5 opened on the inner wall of the semi-autogenous grinding cylinder 1. The mounting slots 5 are located on the inner wall of the semi-autogenous grinding cylinder 1 between two adjacent rows of arc-shaped liners 2. Mounting plates 6 are slidably connected to the inner wall of the mounting slots 5. The semi-autogenous grinding cylinder 1 and the mounting plates 6 are fixedly connected by multiple sets of fixing bolt pairs 7. Anti-slip outer arc blocks 8 are fixedly installed on the inner wall of the mounting plates 6 facing the center of the semi-autogenous grinding cylinder 1.

[0024] To further explain, the sliding fit design of the mounting groove 5 and the mounting plate 6 facilitates the quick positioning and installation of the separation mechanism, and the fixing bolt pair 7 ensures a stable connection; the anti-slip outer arc block 8 protrudes from the inner wall of the cylinder, changes the trajectory of the ore movement, increases the frequency of material overturning and collision, further improves the grinding efficiency, and at the same time prevents the material from sliding inside the cylinder, enhancing the stability of equipment operation.

[0025] like Figure 1 and Figure 2As shown, the distance between two adjacent grinding protrusions 4 on the vertical plane located on the same arc-shaped liner 2 is set to be the same.

[0026] To further explain, this design ensures that the ore is subjected to uniform force during the grinding process, avoiding excessive wear or insufficient grinding in certain areas, guaranteeing consistent grinding results, and extending the service life of the liner.

[0027] like Figure 1-3 As shown, the outer wall of the semi-self-grinding cylinder 1 is provided with multiple limiting holes 9 for the limiting bolts 3 to pass through, and the outer wall of the semi-self-grinding cylinder 1 is provided with multiple limiting grooves 10 for the fixing bolt pair 7 to pass through.

[0028] To further explain, the limiting hole 9 and the limiting groove 10 on the outer wall of the semi-self-grinding cylinder 1 provide through channels for the limiting bolt 3 and the fixing bolt pair 7, respectively, to ensure accurate bolt installation position, simplify the installation process, and improve assembly accuracy.

[0029] like Figure 1 As shown, the outer wall of the arc-shaped liner 2 is provided with multiple threaded holes that are compatible with the limit bolts 3, and the limit bolts 3 are threadedly connected to the inner wall of the threaded holes.

[0030] To further explain, this design provides reliable fastening force to prevent the liner from loosening or shifting during ball mill operation, ensuring the safe and stable operation of the equipment.

[0031] like Figure 1 As shown, multiple mounting slots 5 are arranged in a ring array on the inner wall of the semi-self-grinding cylinder 1.

[0032] To further explain, this design allows the dividing mechanism to be evenly distributed on the inner wall of the cylinder, forming a symmetrical grinding area, optimizing the material flow path, and improving grinding efficiency and uniformity.

[0033] like Figure 1 and Figure 2 As shown, the inner contour of the arc-shaped liner 2 and the inner contour of the anti-slip outer arc block 8 are coaxially arranged.

[0034] To further explain, the coaxial arrangement ensures that the two form a continuous and smooth curved surface inside the cylinder, avoiding material stagnation or blockage, allowing the ore to move smoothly inside the cylinder, and improving the grinding effect and equipment operation stability.

[0035] The functional principle of this utility model can be explained through the following operation methods:

[0036] Install the fixing plate mechanism: Distribute multiple arc-shaped liners 2 in a circular array at corresponding positions on the inner wall of the semi-autogenous grinding cylinder 1, so that the outer walls of adjacent arc-shaped liners 2 in the same row are in contact with each other. Align the limiting hole 9 on the outer wall of the semi-autogenous grinding cylinder 1 with the threaded hole on the outer wall of the arc-shaped liner 2, pass the limiting bolt 3 through the limiting hole 9 and screw it into the threaded hole, tighten the limiting bolt 3, and fix the arc-shaped liner 2 on the inner wall of the semi-autogenous grinding cylinder 1 to complete the installation of the fixing plate mechanism.

[0037] Install the separation mechanism: On the inner wall of the semi-autogenous grinding cylinder 1 between two adjacent rows of arc-shaped liners 2, find the preset mounting groove 5, align the mounting plate 6 with the mounting groove 5, slide it along the inner wall of the mounting groove 5 so that the mounting plate 6 is accurately embedded, align the limiting groove 10 on the outer wall of the semi-autogenous grinding cylinder 1 with the corresponding hole on the mounting plate 6, pass the fixing bolt pair 7 through the limiting groove 10 and tighten it to fix the mounting plate 6. At this time, the mounting plate 6 is in the predetermined position facing the anti-slip outer arc block 8 on the inner wall of the center of the semi-autogenous grinding cylinder 1.

[0038] Start the ball mill: After the installation of the fixed plate mechanism and the separation mechanism is completed, start the semi-autogenous grinding ball mill for metal ore. When the semi-autogenous grinding cylinder 1 rotates, the multiple grinding protrusions 4 on the inner side wall of the arc-shaped liner 2 come into contact with the ore and grind the ore. At the same time, the anti-slip outer arc block 8 of the separation mechanism changes the movement trajectory of the ore, increases the collision and tumbling between the ore, and improves the grinding effect.

[0039] Regular inspection and maintenance: After the ball mill has been running for a period of time, stop the machine and check the condition of each component; check if the arc-shaped liner 2 is loose, and if so, tighten the limit bolt 3; check if the mounting plate 6 is stable, and reinforce it with the fixing bolt pair 7; observe the wear of the grinding convex teeth 4 and the anti-slip outer arc block 8. When the wear is serious and affects the grinding effect, replace the corresponding arc-shaped liner 2 or mounting plate 6 according to the installation steps.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metal ore semi-autogenous ball mill liner comprising a semi-autogenous shell (1) characterised in that, Multiple sets of partitioning mechanisms are provided on the inner wall of the semi-self-grinding cylinder (1), and a fixing plate mechanism is provided on the inner wall of the semi-self-grinding cylinder (1) between two adjacent partitioning mechanisms. The fixed plate mechanism includes multiple arc-shaped liners (2). The semi-self-grinding cylinder (1) and the arc-shaped liners (2) are fixed together by multiple limiting bolts (3). The outer walls of two adjacent arc-shaped liners (2) in the same row are in contact with each other. Multiple arc-shaped liners (2) in the longitudinal plane are arranged in a ring array on the inner wall of the semi-self-grinding cylinder (1). Multiple grinding protrusions (4) are fixedly installed on the inner side wall of the arc-shaped liners (2).

2. The liner for a semi-autogenous ball mill for metal ore according to claim 1, characterized in that, The separation mechanism includes multiple mounting slots (5) opened on the inner wall of the semi-auto-grinding cylinder (1). The mounting slots (5) are located on the inner wall of the semi-auto-grinding cylinder (1) between two adjacent rows of arc-shaped liners (2). Mounting plates (6) are slidably connected to the inner wall of the mounting slots (5). The semi-auto-grinding cylinder (1) and the mounting plates (6) are fixedly connected by multiple sets of fixing bolt pairs (7). Anti-slip outer arc blocks (8) are fixedly installed on the inner wall of the mounting plates (6) facing the center of the semi-auto-grinding cylinder (1).

3. The liner for a semi-autogenous ball mill for metal ore according to claim 1, characterized in that, The distance between two adjacent grinding teeth (4) on the vertical plane located on the same arc-shaped liner (2) is set to be the same.

4. The liner for a semi-autogenous ball mill for metal ore according to claim 2, characterized in that, The semi-self-grinding cylinder (1) has multiple limiting holes (9) on its outer side wall to facilitate the passage of the limiting bolt (3), and multiple limiting grooves (10) on its outer side wall to facilitate the passage of the fixing bolt pair (7).

5. A liner for a semi-autogenous ball mill for metal ore according to claim 2, characterized in that, The outer wall of the arc-shaped liner (2) is provided with multiple threaded holes that are compatible with the limiting bolts (3), and the limiting bolts (3) are threadedly connected to the inner wall of the threaded holes.

6. A liner for a semi-autogenous ball mill for metal ore according to claim 2, characterized in that, Multiple mounting slots (5) are arranged in a ring array on the inner wall of the semi-self-grinding cylinder (1).

7. A liner for a semi-autogenous ball mill for metal ore according to claim 2, characterized in that, The inner contour of the arc-shaped liner (2) and the inner contour of the anti-slip outer arc block (8) are coaxially arranged.

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