Mineral comminution process system
By designing a mineral crushing and grinding process system and utilizing the coordinated operation of the material level metering device and the conveyor belt, the supply in the roller mill workshop is dynamically adjusted, which solves the problem of unbalanced operation rhythm in mineral sorting and grinding, improves system efficiency and reduces production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ENFI ENG CORP
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-07
AI Technical Summary
The unbalanced operating rhythm of crushing, roller milling and grinding operations during mineral sorting and grinding leads to problems such as low ore processing efficiency, increased lifting capacity and high production energy consumption.
Design a mineral crushing and grinding process system that dynamically adjusts the supply in the roller mill workshop through the coordinated operation of a material level metering device and a conveyor belt, ensuring continuous operation and optimizing the production process. This system includes the combined use of a crushing workshop, a roller mill workshop, a material preparation silo, and a conveyor belt.
It improves the operating efficiency of the mineral processing system, reduces equipment downtime and failure rate, lowers production costs, and ensures the continuity and stability of production.
Smart Images
Figure CN224462876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mineral processing technology, specifically to a mineral crushing and grinding process system. Background Technology
[0002] In the field of mineral sorting and grinding, crushing, roller milling, and grinding are key links in the entire production process. However, in actual production, crushing, roller milling, and grinding each have different operating rhythms and processing capacity requirements, resulting in a significant imbalance in the operating system. This not only affects the ore processing efficiency but also increases unnecessary ore lifting, thereby increasing production energy consumption. Utility Model Content
[0003] This invention aims to at least partially solve one of the aforementioned technical problems. To this end, embodiments of this invention propose a mineral crushing and grinding system that can dynamically adjust the supply to the roller mill workshop, thereby helping to improve the overall system's operating efficiency.
[0004] The mineral crushing and grinding process system provided in this embodiment of the utility model includes a crushing workshop, a roller mill workshop, a material preparation bin, a first conveyor belt, a second conveyor belt, and a third conveyor belt. The crushing workshop is used to crush raw materials to obtain crushed products. The first conveyor belt is used to transport the crushed products to the roller mill workshop, and the roller mill workshop is used to perform ultrafine crushing on the crushed products.
[0005] The roller mill workshop is equipped with a material level metering device. When the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop exceeds the preset maximum accumulation amount of the roller mill workshop, the second conveyor belt is used to transport the crushed products on the first conveyor belt to the preparation silo. When the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop is lower than the preset minimum accumulation amount of the roller mill workshop, and the crushing workshop is in a closed state, the third conveyor belt is used to transport the crushed products in the preparation silo to the first conveyor belt, and then transport them to the roller mill workshop through the first conveyor belt.
[0006] The mineral crushing and grinding system provided by this utility model, through the coordinated operation of the material level metering device, the second conveyor belt and the third conveyor belt, can not only ensure the continuous operation of the roller mill workshop and avoid production interruptions caused by material accumulation or shortage, but also ensure that the roller mill workshop can continue to produce normally without being affected by changes in the state of the crushing workshop. This greatly improves the operating efficiency of the entire system, reduces equipment idle time and failure rate, and lowers production costs.
[0007] In some embodiments, the crushing workshop includes a coarse crushing device, a fourth conveyor belt, and a medium crushing device. The coarse crushing device is used to coarsely crush the raw material to obtain a coarsely crushed product with a particle size ≤300mm. The fourth conveyor belt is used to transport the coarsely crushed product produced by the coarse crushing device to the medium crushing device, and the medium crushing device is used to perform medium crushing on the coarsely crushed product to obtain a medium crushed product.
[0008] In some embodiments, the crushing workshop further includes a fine crushing device, which is used to finely crush the medium-crushed products produced by the medium crushing device to obtain fine-crushed products.
[0009] In some embodiments, the crushing workshop further includes a first screening device for screening the medium-crushed product or the fine-crushed product, wherein the undersize product of the first screening device is a crushed product with a particle size ≤ 45mm.
[0010] In some embodiments, the mineral crushing and grinding process system further includes a second screening device, a fifth conveyor belt, and a powder silo. The second screening device is used to screen the ultrafine crushed products produced in the roller mill workshop, and the undersize product of the second screening device is a powder product with a particle size ≤ 6mm. The fifth conveyor belt is used to transport the undersize product of the second screening device to the powder silo.
[0011] In some embodiments, at least one of the first screening device and the second screening device is configured as a dry vibrating screen.
[0012] In some embodiments, at least one of the coarse crushing device and the medium crushing device includes a cone crusher.
[0013] In some embodiments, the roller mill workshop is equipped with a high-pressure roller mill.
[0014] In some embodiments, the mineral crushing and grinding process system further includes a control module and multiple material metering devices. The multiple material metering devices are respectively installed on the first conveyor belt, the second conveyor belt, and the third conveyor belt. The material metering devices are used to measure the amount of material being conveyed in real time and send it to the control module. The control module is used to control the production speed of the crushing workshop and the roller mill workshop according to the amount of material collected by the material metering devices.
[0015] In some embodiments, the material metering device includes a weighing detection unit for measuring the weight of the conveyed material. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a mineral crushing and grinding process system provided in an embodiment of this utility model.
[0017] Figure 2 This is a schematic diagram of the mineral crushing and grinding process system provided in one embodiment of the present invention.
[0018] Figure 3 This is a schematic diagram of the structure of a mineral crushing and grinding process system provided in another embodiment of this utility model.
[0019] Figure 4 This is a schematic diagram of the mineral crushing and grinding process system provided in another embodiment of the present invention.
[0020] Attached figure label: 10, Mineral crushing and grinding process system;
[0021] 11. Crushing workshop; 111. Fourth conveyor belt; 112. Medium crushing unit; 113. Fine crushing unit; 114. First screening unit; 115. Seventh conveyor belt;
[0022] 12. Roller mill workshop; 13. Material preparation silo; 14. First conveyor belt; 15. Second conveyor belt; 16. Third conveyor belt; 17. Second screening device; 18. Fifth conveyor belt; 19. Powder silo; 21. Eighth conveyor belt; 22. Sixth conveyor belt; 23. Ninth conveyor belt; 24. Coarse crushing product silo. Detailed Implementation
[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0024] refer to Figures 1 to 4 This utility model provides a mineral crushing and grinding process system 10, which includes a crushing workshop 11, a roller mill workshop 12, a preparation bin 13, a first conveyor belt 14, a second conveyor belt 15, and a third conveyor belt 16. The crushing workshop 11 is used to crush raw materials to obtain crushed products. The first conveyor belt 14 is used to transport the crushed products to the roller mill workshop 12, where the roller mill workshop 12 is used for ultra-fine crushing. The roller mill workshop 12 is equipped with a material level metering device. When the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop 12 exceeds the preset maximum accumulation amount, the second conveyor belt 15 is used to transport the crushed products on the first conveyor belt 14 to the preparation bin 13. When the material level metering device detects that the accumulated amount in the roller mill workshop 12 is lower than the preset minimum accumulation amount, and the crushing workshop 11 is in a closed state, the third conveyor belt 16 is used to transport the crushed products in the preparation bin 13 to the second conveyor belt 15, and then to the roller mill workshop 12 via the first conveyor belt 14. in, Figure 1 , Figure 2 , Figure 3 and Figure 4The middle arrow indicates the direction of material transport.
[0025] Specifically, the crushing workshop 11, as the starting point of the entire mineral crushing and grinding process system 10, can crush raw materials. The first conveyor belt 14 is used to transport the crushed products produced by the crushing workshop 11 to the roller mill workshop 12, ensuring that the roller mill workshop 12 can obtain a stable and continuous supply of raw materials. The roller mill workshop 12 further reduces the particle size of the crushed products under the strong pressure and shearing force of the rollers, achieving the requirements of ultrafine crushing.
[0026] In actual operation, when the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop 12 exceeds the preset maximum accumulation amount of the roller mill workshop 12, it indicates that the processing capacity of the roller mill workshop 12 has reached its limit. At this time, the second conveyor belt 15 is activated, and the second conveyor belt 15 transports the crushed products on the first conveyor belt 14 to the preparation bin 13 for temporary storage. When the material level metering device detects that the accumulated amount in the roller mill workshop 12 is lower than the preset minimum accumulation amount of the roller mill workshop 12, and the crushing workshop 11 is in a closed state, it indicates that the crushed products in the roller mill workshop 12 are insufficient. At this time, the third conveyor belt 16 is activated, and the third conveyor belt 16 transports the crushed products in the preparation bin 13 to the second conveyor belt 15, and then transports them to the roller mill workshop 12 through the first conveyor belt 14, providing sufficient raw material supply for the roller mill workshop 12. That is, an adjustment mechanism can be realized for the temporary storage of materials exceeding the accumulation limit and the replenishment of materials with insufficient accumulation.
[0027] In summary, the mineral grinding system 10 provided by this utility model, through the coordinated operation of the material level metering device, the second conveyor belt 15, and the third conveyor belt 16, not only ensures the continuous operation of the roller mill workshop 12 and avoids production interruptions caused by material accumulation or shortage, but also ensures that the roller mill workshop 12 is not affected by changes in the state of the crushing workshop 11. This greatly improves the operating efficiency of the entire system, reduces equipment idle time and failure rate, and lowers production costs. In other words, the mineral grinding system 10 can dynamically adjust the supply to the roller mill workshop, which helps to improve the operating efficiency of the entire system.
[0028] like Figure 1 and Figure 2 As shown, in some embodiments, the crushing workshop 11 includes a coarse crushing device, a fourth conveyor belt 111, and a medium crushing device 112. The coarse crushing device is used to coarsely crush the raw materials to obtain coarsely crushed products with a particle size ≤300mm. The fourth conveyor belt 111 is used to transport the coarsely crushed products produced by the coarse crushing device to the medium crushing device 112, and the medium crushing device 112 is used to medium crush the coarsely crushed products to obtain medium crushed products.
[0029] In other words, the crushing workshop 11 can process the raw materials through at least two stages: coarse crushing and medium crushing. This ensures that the crushed products, after passing through the coarse crushing device and the medium crushing device 112, meet the requirements of the roller mill workshop 12, providing a high-quality raw material guarantee for subsequent mineral grinding processes. Of course, in some embodiments, the crushing workshop 11 may also include a coarse crushing product bin 24, which is used to store the coarse crushing products produced by the coarse crushing device. After the coarse crushing device produces coarse crushing products, they can be promptly transported to the coarse crushing product bin 24 for temporary storage, effectively buffering the production rhythm differences between the coarse crushing device and the subsequent crushing stage (medium crushing device).
[0030] Furthermore, such as Figure 3 and Figure 4 As shown, the crushed products can be divided into coarse crushed products, medium crushed products, and fine crushed products. The crushing workshop 11 also includes a fine crushing device 113, which is used to further crush the medium crushed products produced by the medium crushing device 112 to obtain fine crushed products, thereby forming a multi-stage crushing system, which helps to improve the production efficiency of the entire mineral crushing and grinding process system 10, reduce production costs, and improve product quality.
[0031] Furthermore, the crushing workshop 11 also includes a first screening device 114, which is used to screen medium-crushed or fine-crushed products. The undersize product of the first screening device 114 is a crushed product with a particle size ≤45mm, which meets the strict requirements of subsequent processes. This not only improves the efficiency and quality of the entire mineral processing flow, but also reduces equipment wear and energy consumption. The crushing workshop 11 also includes a sixth conveyor belt 22, which is used to transport the crushed products produced by the medium-crushing device 112 or the fine-crushing device 113 to the first screening device 114.
[0032] In this embodiment, the crushing workshop 11 also includes a seventh conveyor belt 115, which is used to transport the oversize product of the first screening device 114 to the inlet of the fine crushing device 113 or the medium crushing device 112, so that it can be crushed again, forming a complete closed-loop production process, which not only improves production efficiency, but also ensures the stability and consistency of product quality.
[0033] In some embodiments, the mineral crushing and grinding process system 10 further includes a second screening device 17, a fifth conveyor belt 18, and a powder silo 19. The second screening device 17 is used to screen the ultrafine crushed product produced in the roller mill workshop 12. The undersize product of the second screening device 17 is a powder product with a particle size ≤ 6 mm. The fifth conveyor belt 18 is used to transport the undersize product of the second screening device 17 to the powder silo 19.
[0034] Furthermore, the mineral crushing and grinding process system 10 also includes an eighth conveyor belt 21 and a ninth conveyor belt 23. The eighth conveyor belt 21 is used to transport the oversize product from the second screening device 17 to the entrance of the roller mill workshop 12 for further roller milling, forming a complete circular production process. This not only improves material utilization and reduces resource waste, but also ensures the uniformity and consistency of the final product particle size, meeting the stringent requirements for raw material particle size in subsequent production stages. The ninth conveyor belt 23 can transport the product produced in the roller mill workshop 12 to the second screening device 17.
[0035] Optionally, at least one of the first screening device 114 and the second screening device 17 is configured as a dry vibrating screen, wherein the dry vibrating screen is relatively simple and easier to maintain. In this embodiment, both the first screening device 114 and the second screening device 17 are configured as dry vibrating screens.
[0036] In addition, such as Figure 1 As shown, in a mineral crushing and grinding system 10 provided in an embodiment of this utility model, the intermediate crushing device 112, the first screening device 114, the sixth conveyor belt 22, and the seventh conveyor belt 115 can be arranged in a straight line along the first direction. The roller mill workshop 12, the material preparation silo 13, the second conveyor belt 15, the third conveyor belt 16, the fifth conveyor belt 18, the eighth conveyor belt 21, the ninth conveyor belt 23, and the second screening device 17 are also arranged in a straight line along the first direction. The first conveyor belt 14 extends along the second direction, and the straight line containing the first direction is perpendicular to the straight line containing the second direction.
[0037] like Figure 3 As shown, in another embodiment of this utility model, the intermediate crushing device 112, the first screening device 114, the sixth conveyor belt 22, and the seventh conveyor belt 115 can be arranged in a straight line along the first direction. The roller mill workshop 12, the material preparation silo 13, the second conveyor belt 15, the material preparation silo 13, the fifth conveyor belt 18, the eighth conveyor belt 21, the ninth conveyor belt 23, and the second screening device 17 are also arranged in a straight line along the first direction. The first conveyor belt 14 and the third conveyor belt 16 are both arranged extending along the second direction, and the straight line of the first direction is perpendicular to the straight line of the second direction.
[0038] In one embodiment of this utility model, the mineral crushing and grinding process system 10 is arranged in a straight line, which not only saves production space and improves space utilization efficiency, but also simplifies the material conveying path and reduces the number of material lifting and transfer times, thereby reducing production energy consumption.
[0039] It should be noted that the first conveyor belt 14, the second conveyor belt 15, the third conveyor belt 16, the fourth conveyor belt 111, the fifth conveyor belt 18, the sixth conveyor belt 22, the seventh conveyor belt 115, the eighth conveyor belt 21 and the ninth conveyor belt 23 in the mineral crushing and grinding process system provided by this utility model can be belt conveyors.
[0040] In some embodiments, at least one of the coarse crushing device and the medium crushing device 112 includes a cone crusher, wherein the cone crusher provides relatively uniform compression and grinding action on the ore during the crushing process, resulting in crushed products with relatively uniform particle size. In this embodiment, both the coarse crushing device and the medium crushing device include cone crushers.
[0041] In some embodiments, a high-pressure roller mill is installed in the roller mill workshop 12. During operation, material enters the space between the two rollers of the high-pressure roller mill through the feed inlet. As the rollers rotate, the material is subjected to intense compression in the gap between the rollers, resulting in mutual compression, friction, and crushing of the material particles, thereby achieving ultra-fine crushing of the material. The material processed by the high-pressure roller mill has a significantly reduced particle size and increased specific surface area, providing more favorable conditions for subsequent screening, mineral processing, and other processes.
[0042] In some embodiments, the mineral crushing and grinding process system 10 further includes a control module and multiple material metering devices. The multiple material metering devices are respectively located on the first conveyor belt 14, the second conveyor belt 15 and the third conveyor belt 16. The material metering devices are used to measure the amount of material being conveyed in real time and send it to the control module. The control module is used to control the production speed of the crushing workshop 11 and the roller mill workshop 12 according to the amount of material collected by the material metering devices.
[0043] Furthermore, the material metering device includes a weighing detection unit, which is used to measure the weight of the conveyed material.
[0044] The weighing detection unit in the material metering device can sensitively sense changes in the weight of the material on the conveyor belt and accurately convert them into electrical signals for measurement, providing a solid data foundation for subsequent control. After receiving the data from the material metering device, the control module uses preset algorithms and models to calculate key parameters such as material flow rate and cumulative amount. Based on this data, the control module can dynamically and accurately adjust the production speed of the crushing workshop 11 and the roller mill workshop 12. For example, when the material volume on a certain conveyor belt is too large, the rotation speed of the corresponding workshop equipment is reduced in time to prevent material accumulation and equipment overload; when the material volume is too small, the equipment operation is accelerated to ensure material supply.
[0045] Furthermore, the control module can achieve coordinated control of the crushing and roller mill workshop 12, optimize the production process, avoid production bottlenecks and material backlog, and automatically adjust production parameters according to different ore properties and production requirements to realize intelligent and automated production processes. This can significantly improve production efficiency, avoid material accumulation and equipment idling, and improve equipment utilization; ensure product quality and ensure that materials are processed evenly in each stage; reduce energy consumption and costs by reasonably adjusting equipment parameters to reduce energy waste and equipment wear; enhance the stability and reliability of the system, and can promptly detect and handle abnormal situations; and provide strong data support for enterprise production management and decision-making, helping enterprises optimize processes and enhance competitiveness.
[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0050] In this utility model, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A mineral crushing and grinding process system, characterized in that, It includes a crushing workshop, a roller mill workshop, a material preparation silo, a first conveyor belt, a second conveyor belt, and a third conveyor belt. The crushing workshop is used to crush raw materials to obtain crushed products. The first conveyor belt is used to transport the crushed products to the roller mill workshop, where the roller mill workshop is used to perform ultrafine crushing on the crushed products. The roller mill workshop is equipped with a material level metering device. When the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop exceeds the preset maximum accumulation amount of the roller mill workshop, the second conveyor belt is used to transport the crushed products on the first conveyor belt to the preparation silo. When the material level metering device detects that the accumulated amount of crushed products in the roller mill workshop is lower than the preset minimum accumulation amount of the roller mill workshop, and the crushing workshop is in a closed state, the third conveyor belt is used to transport the crushed products in the preparation silo to the first conveyor belt, and then transport them to the roller mill workshop through the first conveyor belt.
2. The mineral crushing and grinding process system according to claim 1, characterized in that, The crushing workshop includes a coarse crushing device, a fourth conveyor belt, and a medium crushing device. The coarse crushing device is used to coarsely crush the raw materials to obtain coarsely crushed products with a particle size ≤300mm. The fourth conveyor belt is used to transport the coarsely crushed products produced by the coarse crushing device to the medium crushing device, which is used to coarsely crush the coarsely crushed products to obtain medium crushed products.
3. The mineral crushing and grinding process system according to claim 2, characterized in that, The crushing workshop also includes a fine crushing device, which is used to further crush the medium crushed products produced by the medium crushing device to obtain fine crushed products.
4. The mineral crushing and grinding process system according to claim 3, characterized in that, The crushing workshop also includes a first screening device, which is used to screen the medium crushed product or the fine crushed product. The undersize product of the first screening device is a crushed product with a particle size ≤ 45mm.
5. The mineral crushing and grinding process system according to claim 4, characterized in that, It also includes a second screening device, a fifth conveyor belt, and a powder silo. The second screening device is used to screen the ultrafine crushed products produced in the roller mill workshop. The undersize product of the second screening device is a powder product with a particle size ≤ 6mm. The fifth conveyor belt is used to transport the undersize product of the second screening device to the powder silo.
6. The mineral crushing and grinding process system according to claim 5, characterized in that, At least one of the first screening device and the second screening device is configured as a dry vibrating screen.
7. The mineral crushing and grinding process system according to claim 2, characterized in that, At least one of the coarse crushing device and the medium crushing device includes a cone crusher.
8. The mineral crushing and grinding process system according to claim 2, characterized in that, The roller mill workshop is equipped with a high-pressure roller mill.
9. The mineral crushing and grinding process system according to claim 1, characterized in that, It also includes a control module and multiple material metering devices, which are respectively installed on the first conveyor belt, the second conveyor belt and the third conveyor belt. The material metering devices are used to measure the amount of material being conveyed in real time and send it to the control module. The control module is used to control the production speed of the crushing workshop and the roller mill workshop according to the amount of material collected by the material metering devices.
10. The mineral crushing and grinding process system according to claim 9, characterized in that, The material metering device includes a weighing detection unit, which is used to measure the weight of the conveyed material.