High-oxidation-rate copper-cobalt ore crushing and grinding system and crushing and grinding process

Abstract

The invention discloses a high-oxidation-rate copper-cobalt ore crushing and grinding system and a high-oxidation-rate copper-cobalt ore crushing and grinding process. The high-oxidation-rate copper-cobalt ore crushing and grinding system comprises a lump ore crushing and grinding system for treating lump ore and a fine ore crushing and grinding system for treating fine ore. The lump ore crushing and grinding system comprises a discharging and crushing system, a middle ore stacking system and a lump ore grinding system which are sequentially connected, the discharging and crushing system is used for discharging, screening and crushing lump ore high-oxidation-rate copper-cobalt ore, and the lump ore grinding system is used for repeatedly grinding and screening ore stacking products and sequentially conducting pulping and rotational flow classification on qualified ore grinding products. The fine ore crushing and grinding system comprises a discharging system, an ore washing system and a fine ore grinding system which are connected in sequence, the ore washing system is used for washing ore and conveying oversize products obtained after ore washing to the middle ore stacking system, undersize products obtained after ore washing are conveyed to the fine ore grinding system, and the fine ore grinding system is used for pulping and rotational flow classification. The system provided by the invention realizes quality-divided and split-flow treatment of fine ore and lump ore, can obtain a better purification effect, reduces the treatment cost and improves the treatment capacity.

Description

Technical Field

[0001] This invention relates to the field of ore crushing and grinding technology, and in particular, to a crushing and grinding system for high-oxidation-rate copper-cobalt ore. Furthermore, this invention also relates to a crushing and grinding process for high-oxidation-rate copper-cobalt ore utilizing the aforementioned high-oxidation-rate copper-cobalt ore crushing and grinding system. Background Technology

[0002] With the development of the global economy and technology, the demand for copper and cobalt metals is increasing daily. However, as copper and cobalt ore mining continues, high-quality, easily beneficiated copper and cobalt ores are becoming increasingly depleted. Currently, much of the copper and cobalt metal comes from copper and cobalt ores, a significant portion of which comes from high-oxidation copper and cobalt ores. In existing processing technologies, most high-oxidation copper and cobalt ores with relatively good beneficiation properties are treated using flotation, as well as combined processes involving flotation, magnetic separation, and smelting. Meanwhile, most difficult-to-beneficiate and relatively difficult-to-beneficiate minerals are treated using chemical methods such as acid leaching.

[0003] Because high-oxidation-rate copper-cobalt ores contain a large amount of acid-consuming substances, direct leaching is economically inefficient. Therefore, beneficiation is necessary to remove acid-consuming impurities from the ore, enrich the copper-cobalt minerals, and significantly reduce the amount of leached ore. If the ore has a low acid consumption, a fast leaching rate, poor floatability, and high flotation reagent consumption, resulting in poor beneficiation economics, direct leaching or leaching after desulfurization is generally performed. In actual production, it has been found that for the same high-oxidation-rate copper-cobalt ore, the acid consumption differs between fines and lump ore. Generally, fines have significantly lower acid consumption than lump ore. The beneficiation and reagent consumption also differ between fines and lump ore. Lump ore generally has better beneficiation, lower reagent consumption, and better beneficiation economics, while fines have higher mud content, poorer beneficiation, and higher flotation reagent consumption. Furthermore, actual production shows that for fines, the grinding fineness does not need to be too fine to maintain a high leaching rate and low acid consumption.

[0004] Therefore, strengthening research on crushing and grinding systems and processes for high-oxidation-rate copper-cobalt ores, and developing crushing and grinding systems and processes that take into account the characteristics of both lump and fine copper-cobalt ores with high oxidation rates, is of practical significance. Summary of the Invention

[0005] This invention provides a high-oxidation-rate copper-cobalt ore crushing and grinding system and crushing and grinding process to solve the technical problems of low leaching ore yield, high reagent consumption, and poor economic benefits in the existing system for processing lump ore and fine ore in the same way.

[0006] The technical solution adopted in this invention is as follows: A high-oxidation-rate copper-cobalt ore crushing and grinding system includes: a lump ore crushing and grinding system for processing high-oxidation-rate copper-cobalt ore with a large feed particle size range and a large maximum feed particle size separated from beneficiation, and a powder ore crushing and grinding system for processing high-oxidation-rate copper-cobalt ore with a small feed particle size range and a small maximum feed particle size separated from beneficiation; the lump ore crushing and grinding system includes a feeding crushing system, an intermediate stockpiling system, and a lump ore grinding system, which are sequentially arranged and connected along the lump high-oxidation-rate copper-cobalt ore processing flow. The feeding crushing system is used to feed, screen, and crush the lump high-oxidation-rate copper-cobalt ore, and convey the resulting coarse crushed product to the intermediate stockpiling system. The intermediate stockpiling system is used to stockpile the coarse crushed product to form stockpile product, which is then conveyed to the lump ore grinding system. The ore processing system is used for repeated grinding and screening of stockpiled ore products, and for sequentially pulping and cyclone classification of qualified ground products. The overflow products from the classification are sent to the next stage of flotation, and the graded and settled products are returned to the pulping process after grinding. The fine ore crushing and grinding system includes a feeding system, a washing system, and a fine ore grinding system that are set up sequentially and connected along the processing flow of fine high-oxidation copper-cobalt ore. The feeding system is used to feed fine high-oxidation copper-cobalt ore to the washing system. The washing system is used to wash the ore and transport the oversize products after washing to the intermediate stockpiled ore system and the undersize products after washing to the fine ore grinding system. The fine ore grinding system is used for pulping and cyclone classification, and the overflow products from the classification are sent to the next stage of flotation desulfurization, and the graded and settled products are returned to the pulping process after grinding.

[0007] Furthermore, the feeding and crushing system includes a lump ore bin, a first ore clamp for feeding the sorted high-oxidation-rate copper-cobalt ore into the lump ore bin, a first plate feeder located below the outlet of the lump ore bin, a first vibrating screen connected to the output end of the first plate feeder, a first crusher connected to the output end of the first vibrating screen, and a first conveyor and a second conveyor arranged sequentially. The first conveyor is located below the first plate feeder, the first vibrating screen, and the first crusher, and the second conveyor is located below the output end of the first conveyor. The first conveyor is used to receive the undersize product of the first vibrating screen and the crushed product of the first crusher and convey them to the second conveyor. The oversize product of the first vibrating screen enters the first crusher. The second conveyor is used to convey the coarse crushed product formed by the undersize product of the first vibrating screen and the crushed product of the first crusher to the intermediate stockpile system.

[0008] Furthermore, the intermediate stockpile system includes an intermediate stockpile formed by stockpiling coarse crushed products, a second plate feeder located at the bottom of the intermediate stockpile, and a third conveyor located below the second plate feeder. The third conveyor is used to transport the stockpile products to the lump ore grinding system.

[0009] Furthermore, the lump ore grinding system includes a first grinding mill, a second vibrating screen located below the outlet of the first grinding mill, a first slurry pump pool located below the second vibrating screen, a processing circuit, a first hydrocyclone assembly, and the second grinding mill. The outlet of the first grinding mill is equipped with a first cylindrical screen, which is used to screen the coarsely ground product, causing the undersized product to fall into the second vibrating screen below, while the oversized product enters the processing circuit. The second vibrating screen is used to further screen the undersized product from the first cylindrical screen, causing it to fall into the first slurry pump pool below. The product enters the processing loop, which processes the oversize product and then re-feeds it to the first grinding mill. The first slurry pump pool is connected to the first slurry feed pump, which pumps the slurry into the first hydrocyclone group. The first hydrocyclone group is used to classify the slurry by swirling, and the overflow product from the classification enters the next stage of flotation. The classified undersand enters the second grinding mill. The outlet of the second grinding mill is equipped with a second cylindrical screen, which is used to screen the finely ground product and return the undersize product to the first slurry pump pool.

[0010] Furthermore, the processing circuit includes a fourth conveyor, a fifth conveyor, and a sixth conveyor arranged sequentially and connected, as well as an iron separator installed above the fourth conveyor for iron removal; the fourth conveyor is used to receive the oversize products from both the first cylindrical screen and the second vibrating screen; the discharge end of the sixth conveyor is connected to the third conveyor so that the oversize products inside can re-enter the first grinding mill; or, the discharge end of the sixth conveyor is also connected to a second crusher, the discharge end of the second crusher is connected to the third conveyor, the second crusher is used to crush the oversize products inside, and the finely crushed products fall into the third conveyor below.

[0011] Furthermore, the feeding system includes a raw ore bin for fine ore, a second ore carbide for feeding the sorted high-oxidation-rate copper-cobalt ore fines into the raw ore bin for fine ore, a third plate feeder located below the outlet of the raw ore bin for fine ore, and a seventh conveyor connected to the output end of the third plate feeder. The seventh conveyor is used to transport the high-oxidation-rate copper-cobalt ore fines to the washing system.

[0012] Furthermore, the ore washing system includes a ore washing machine, an eighth conveyor, a second slurry pump pool, and a second feed slurry pump connected to the second slurry pump pool. The ore washing machine is used to wash high-oxidation-rate copper-cobalt ore powder and to send the oversize product separated from the washing process into the eighth conveyor. The discharge end of the eighth conveyor is connected to the second conveyor so that the oversize product separated from the washing process enters the intermediate stockpile system, while the undersize product separated from the washing process enters the second slurry pump pool. The second feed slurry pump pumps the slurry into the ore powder grinding system.

[0013] Furthermore, the ore grinding system includes a thickener, a thickener underflow pump connected to the thickener, a third slurry pump pool connected to the thickener underflow pump, a third feed slurry pump connected to the third slurry pump pool, a second hydrocyclone assembly, and a third grinding mill. The thickener underflow pump is used to pump the underflow from the thickener into the third slurry pump pool, and the third feed slurry pump is used to pump the slurry into the second hydrocyclone assembly. The second hydrocyclone assembly is used to perform hydrocyclone classification of the slurry, and the overflow product from the classification enters the next stage of flotation desulfurization, while the classified underflow enters the third grinding mill. The outlet of the third grinding mill is equipped with a third cylindrical screen, which is used to screen the grinding product and return the undersized product to the third slurry pump pool.

[0014] According to another aspect of the present invention, a high oxidation rate copper-cobalt ore crushing and grinding process is also provided, employing a high oxidation rate copper-cobalt ore crushing and grinding system as described above. The crushing and grinding process includes the following steps: ore classification: the high oxidation rate copper-cobalt ore is divided into lump high oxidation rate copper-cobalt ore and fine high oxidation rate copper-cobalt ore according to the feed particle size range and the maximum feed particle size; subsystem processing: the lump high oxidation rate copper-cobalt ore is processed separately using a lump ore crushing and grinding system, the fine high oxidation rate copper-cobalt ore is processed using a fine ore crushing and grinding system, and the oversize product separated from the washing of the fine ore crushing and grinding system is also processed using a lump ore crushing and grinding system.

[0015] Further, the "subsystem processing" step includes the processing of high-oxidation-rate copper-cobalt ore using a lump ore crushing and grinding system and the oversize product separated from the washing and grinding system using a powder ore crushing and grinding system; and the processing of high-oxidation-rate copper-cobalt ore using a powder ore crushing and grinding system. The lump ore crushing and grinding system includes a feeding crushing system, an intermediate stockpile system, and a lump ore grinding system arranged sequentially and connected. The lump ore crushing and grinding process specifically includes the following steps: feeding, screening, and crushing the high-oxidation-rate copper-cobalt ore using the feeding crushing system, and conveying the resulting coarse crushed product to the intermediate stockpile system; using the intermediate stockpile system to stockpile the coarse crushed product to form stockpile product, and conveying it to the lump ore grinding system; and using the lump ore grinding system to process the stockpile product. The process involves repeated grinding and screening of the ore, followed by pulping and cyclone classification of the qualified grinding products. The overflow from the classification is then sent to the next stage of flotation and classification, while the ore is returned to the pulping stage after grinding. The ore crushing and grinding system includes a feeding system, a washing system, and an ore grinding system that are set up and connected in sequence. The ore crushing and grinding process specifically includes the following steps: feeding high-oxidation-rate copper-cobalt ore powder to the washing system using the feeding system; washing the ore using the washing system and conveying the oversize product after washing to the intermediate stockpile system, and conveying the undersize product after washing to the ore grinding system; pulping and cyclone classification using the ore grinding system, and sending the overflow from the classification to the next stage of flotation desulfurization and classification, while the ore is returned to the pulping stage after grinding.

[0016] The present invention has the following beneficial effects: This invention system separates high-oxidation-rate copper-cobalt ore into lump high-oxidation-rate copper-cobalt ore (hereinafter referred to as "lump ore") and fine high-oxidation-rate copper-cobalt ore (hereinafter referred to as "fine ore"). A lump ore crushing and grinding system is used to process the lump ore, and a fine ore crushing and grinding system is used to process the fine ore, thus achieving separate processing of high-oxidation-rate copper-cobalt ore fines and lump ore. For lump high-oxidation-rate copper-cobalt ore, it has a high amount of acid-consuming gangue, high leaching acid consumption, good ore beneficiation properties, and low beneficiation costs. Therefore, it can beneficiated and purified to reduce the acid-consuming gangue content in the concentrate product, and combined beneficiation and metallurgical treatment can be carried out to obtain better purification results. For fine high-oxidation-rate copper-cobalt ore, it has poor beneficiation properties, high mud content, high reagent consumption, low beneficiation recovery rate, and high beneficiation costs. However, it has a low acid-consuming gangue content and a fast leaching rate. It can be leached after grinding and desulfurization to increase the throughput. This invention's system separates high-oxidation-rate copper-cobalt ore into lump ore and fine ore. The lump ore requires systematic beneficiation, where the ore needs to be ground to -0.074mm (meaning a particle size below 0.074mm) accounting for 73-78%, allowing for sufficient individual liberation of copper-cobalt minerals to achieve better purification. The fine ore only requires grinding followed by desulfurization, and the copper sulfide concentrate is then regrinded and beneficiated. The fine ore only needs to be crushed to -0.074mm, accounting for 58%-65%, which reduces leaching acid consumption, grinding unit consumption, and auxiliary material unit consumption, while increasing throughput. Compared to processing high-oxidation-rate copper-cobalt ore powder and lump ore simultaneously, if grinding and desulfurization are used followed by leaching, the lump ore contains more acid-consuming substances, which greatly increases the leaching cost. If powder and lump ore are subjected to systematic beneficiation, not only is it necessary to increase the grinding fineness and grinding cost, but the powder ore also contains a lot of mud, which will consume a lot of flotation reagents, resulting in a low beneficiation recovery rate, and some copper and cobalt minerals will be lost to the tailings. This invention's system can operate without shutting down the machine. Before the lump ore crushing and grinding system is overhauled (the intermediate stockpile system is generally overhauled 1-2 times a year), the intermediate ore stockpile in the intermediate stockpile system is lowered, and the oversize products in the washing system can be temporarily stored in the intermediate stockpile (when the lump ore crushing and grinding system is overhauled, the lump ore is temporarily stored in the washing system by truck, and the oversize products in the powder crushing and grinding system can continue to produce). When the lump ore crushing and grinding system is overhauled, the lump ore crushing and grinding system can also produce normally, realizing continuous ore supply for smelting and thus improving processing efficiency.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of a high-oxidation-rate copper-cobalt ore crushing and grinding system according to a preferred embodiment of the present invention.

[0019] Legend: 1. Feeding and crushing system; 11. Lump ore bin; 12. First ore clamp; 13. First plate feeder; 14. First vibrating screen; 15. First crusher; 16. First conveyor; 17. Second conveyor; 2. Intermediate ore stockpile system; 21. Intermediate ore stockpile; 22. Second plate feeder; 23. Third conveyor; 3. Lump ore grinding system; 31. First grinding mill; 311. First cylindrical screen; 32. Second vibrating screen; 33. First slurry pump pool; 34. First feed slurry pump; 35. Processing circuit; 351. Fourth conveyor; 352. Fifth conveyor; 353. Sixth conveyor; 354. Iron separator; 355. Second crusher; 36. First hydrocyclone assembly; 37. Second grinding mill; 371. Second cylindrical screen; 6. Feeding system; 61. Fine ore bin; 62. Second ore clamp; 63. Third plate feeder; 64. Seventh conveyor; 7. Ore washing system; 71. Ore washing machine; 72. Eighth conveyor; 73. Second slurry pump tank; 74. Second ore feed slurry pump; 8. Ore grinding system; 81. Thickener; 82. Thickener underflow pump; 83. Third slurry pump tank; 84. Third ore feed slurry pump; 85. Second hydrocyclone group; 86. Third grinding mill; 861. Third cylindrical screen. Detailed Implementation

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Those skilled in the art will understand that, unless specifically stated otherwise, the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof. It should be understood that when we say a component is "connected" to another component, it can be directly connected to the other component or connected via an intermediate component. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items. The terms "first" and "second," etc., in this specification and claims are used to distinguish different objects, not to describe a particular order.

[0022] Reference Figure 1 A preferred embodiment of the present invention provides a high-oxidation-rate copper-cobalt ore crushing and grinding system, characterized in that it includes: a lump ore crushing and grinding system for processing high-oxidation-rate copper-cobalt ore (hereinafter referred to as: lump ore, with a feed particle size of 0-1200mm) with a large feed particle size range and a large maximum feed particle size separated from ore beneficiation, and a powder ore crushing and grinding system for processing high-oxidation-rate copper-cobalt ore (hereinafter referred to as: powder ore, with a feed particle size of 0-250mm) with a small feed particle size range and a small maximum feed particle size separated from ore beneficiation. The lump ore crushing and grinding system includes a feeding crushing system 1, an intermediate stockpile system 2, and a lump ore grinding system 3, which are set up sequentially and connected along the lump ore high oxidation rate copper-cobalt ore processing flow. The feeding crushing system 1 is used to feed, screen, and crush the lump ore high oxidation rate copper-cobalt ore, and to transport the coarse crushed product to the intermediate stockpile system 2. The intermediate stockpile system 2 is used to stockpile the coarse crushed product to form stockpile product and to transport it to the lump ore grinding system 3. The lump ore grinding system 3 is used to repeatedly grind and screen the stockpile product, and to sequentially pulp and classify the qualified grinding product, and to send the overflow product of the classification to the next stage of flotation, and the classified sand is ground and then returned to the pulping. The powder ore crushing and grinding system includes a feeding system 6, a washing system 7, and a powder ore grinding system 8, which are set up sequentially and connected along the processing flow of high-oxidation-rate copper-cobalt powder ore. The feeding system 6 is used to feed the high-oxidation-rate copper-cobalt powder ore to the washing system 7. The washing system 7 is used to wash the ore and transport the oversize product after washing to the intermediate stockpile system 2. The undersize product after washing is transported to the powder ore grinding system 8. The powder ore grinding system 8 is used for pulping and cyclone classification, and the overflow product of classification is sent to the next stage of flotation desulfurization. The classified sand is returned to pulping after grinding.

[0023] This invention system separates high-oxidation-rate copper-cobalt ore into lump high-oxidation-rate copper-cobalt ore and fine high-oxidation-rate copper-cobalt ore. A lump high-oxidation-rate copper-cobalt ore crushing and grinding system is used to process the lump high-oxidation-rate copper-cobalt ore, and a fine high-oxidation-rate copper-cobalt ore crushing and grinding system is used to process the fine high-oxidation-rate copper-cobalt ore, thus achieving separate processing of high-oxidation-rate copper-cobalt ore fines and lump ore. For lump high-oxidation-rate copper-cobalt ore, it has a high amount of acid-consuming gangue, high leaching acid consumption, good ore beneficiation properties, and low beneficiation costs. Therefore, it can beneficiated and purified to reduce the acid-consuming gangue content in the concentrate product, and combined beneficiation and metallurgical processing can be used to obtain better purification results. For fine high-oxidation-rate copper-cobalt ore, it has poor beneficiation properties, high mud content, high reagent consumption, low beneficiation recovery rate, and high beneficiation costs. However, it has a low acid-consuming gangue content and a fast leaching rate. It can be leached after grinding and desulfurization to increase the throughput. This invention's system separates high-oxidation-rate copper-cobalt ore into lump ore and fine ore. The lump ore requires systematic beneficiation, where the ore needs to be ground to -0.074mm (meaning a particle size below 0.074mm) accounting for 73-78%, allowing for sufficient individual liberation of copper-cobalt minerals to achieve better purification. The fine ore only requires grinding followed by desulfurization, and the copper sulfide concentrate is then regrinded and beneficiated. The fine ore only needs to be crushed to -0.074mm, accounting for 58%-65%, which reduces leaching acid consumption, grinding unit consumption, and auxiliary material unit consumption, while increasing throughput. Compared to processing high-oxidation-rate copper-cobalt ore powder and lump ore simultaneously, if grinding and desulfurization are used followed by leaching, the lump ore contains more acid-consuming substances, which greatly increases the leaching cost. If powder and lump ore are subjected to systematic beneficiation, not only is it necessary to increase the grinding fineness and grinding cost, but the powder ore also contains a lot of mud, which will consume a lot of flotation reagents, resulting in a low beneficiation recovery rate, and some copper and cobalt minerals will be lost to the tailings. The system of this invention can achieve non-stop operation. Before the lump ore crushing and grinding system is overhauled (the intermediate stockpile system 2 is generally overhauled 1-2 times a year), the intermediate ore stockpile in the intermediate stockpile system 2 is lowered. The oversize products in the washing system 7 can be temporarily stored in the intermediate stockpile (when the lump ore crushing and grinding system is overhauled, the lump ore is temporarily stored in the washing system 7 by truck). The powder ore crushing and grinding system can continue to produce. When the lump ore crushing and grinding system is overhauled, the lump ore crushing and grinding system can also produce normally, realizing continuous ore supply for smelting and thus improving processing efficiency.

[0024] Optionally, such as Figure 1As shown, the feeding and crushing system 1 includes a lump ore bin 11, a first ore clamp 12 for feeding the sorted high-oxidation-rate copper-cobalt ore into the lump ore bin 11, a first plate feeder 13 arranged below the outlet of the lump ore bin 11, a first vibrating screen 14 connected to the output end of the first plate feeder 13, a first crusher 15 connected to the output end of the first vibrating screen 14, and a first conveyor 16 and a second conveyor 17 arranged in sequence. The first conveyor 16 is located below the first plate feeder 13, the first vibrating screen 14, and the first crusher 15. The second conveyor 17 is located below the output end of the first conveyor 16. The first conveyor 16 is used to receive the undersize product of the first vibrating screen 14 and the crushed product of the first crusher 15 and transport them to the second conveyor 17. The oversize product of the first vibrating screen 14 enters the first crusher 15. The second conveyor 17 is used to transport the coarse crushed product formed by the undersize product of the first vibrating screen 14 and the crushed product of the first crusher 15 to the intermediate stockpile system 2.

[0025] In some embodiments, the first plate feeder 13 is a heavy-duty plate feeder, used to feed the ore in the lump ore bin 11 to the first vibrating screen 14 for screening. It is inclined upward at a certain angle of 14° to 18° at the bottom of the lump ore bin 11, and the heavy plate head is equipped with a steel strip curtain, which can buffer the ore. The interval of the first vibrating screen 14 is adjustable according to the properties of the ore. The first crusher 15 is a jaw crusher, which can crush ore from 0 to 1200 mm, and the crushed product particle size is less than 250 mm.

[0026] Optionally, such as Figure 1 As shown, the intermediate stockpile system 2 includes an intermediate stockpile 21 formed by piling up coarse crushed products, a second plate feeder 22 located at the bottom of the intermediate stockpile 21, and a third conveyor 23 located below the second plate feeder 22. The third conveyor 23 is used to transport the stockpile products to the lump ore grinding system 3. In some embodiments, the second plate feeder 22 can be replaced by a vibrating feeder; since segregation occurs when the ore is fed into the intermediate stockpile 21, the different speeds of the second plate feeders 22 at the bottom of the intermediate stockpile 21 can be adjusted to achieve balanced feeding.

[0027] Optionally, such as Figure 1As shown, the lump ore grinding system 3 includes a first grinding mill 31, a second vibrating screen 32 located below the outlet of the first grinding mill 31, a first slurry pump pool 33 located below the second vibrating screen 32, a processing circuit 35, a first hydrocyclone assembly 36, and a second grinding mill 37. The outlet of the first grinding mill 31 is equipped with a first cylindrical screen 311, which is used to screen the coarsely ground product, causing the undersize product to fall into the second vibrating screen 32 below, and the oversize product to enter the processing circuit 35. The second vibrating screen 32 is used to further screen the undersize product from the first cylindrical screen 311, causing the undersize product to fall into the first slurry pump pool 33 below, and the oversize product to enter the processing circuit 35. The processing circuit 35 is used to process the oversize product and then re-transport it to the first grinding mill 31. The first slurry pump tank 33 is connected to a first slurry feed pump 34, which pumps the slurry into a first hydrocyclone group 36. The first hydrocyclone group 36 is used to perform hydrocyclone classification on the slurry, and the overflow product from the classification enters the next stage of flotation, while the classified underflow enters the second grinding mill 37. The outlet of the second grinding mill 37 is equipped with a second cylindrical screen 371, which is used to screen the finely ground product and return the undersized product to the first slurry pump tank 33.

[0028] During operation, the second plate feeder 22 under the intermediate ore pile 21 feeds the first grinding mill 31 through the third conveyor 23. The first grinding mill 31 grinds the ore, and the ground product passes through the first cylindrical screen 311. The undersize product is fed to the second vibrating screen 32, and the undersize product of the second vibrating screen 32 is fed to the first slurry pump pool 33. The oversize products of the second vibrating screen 32 and the first cylindrical screen 311 are fed to the processing loop 35. After processing, the material is reintroduced into the first grinding mill 31 via the third conveyor 23. The material in the first slurry pump pool 33 is fed to the first hydrocyclone group 36 through the first feed slurry pump 34. The overflow of the first hydrocyclone group 36 goes to the flotation system, and the undersand returns to the second grinding mill 37 for grinding. The ground product passes through the second cylindrical screen 371, and the undersize product is fed to the first slurry pump pool 33, while the oversize product is fed to the processing loop 35.

[0029] In some embodiments, the first hydrocyclone group 36 may be a hydrocyclone group or a spiral classifier; the first grinding mill 31 and the second grinding mill 37 are located on the same line; the second vibrating screen 32 is a linear vibrating screen, which is located directly below the first cylindrical screen 311.

[0030] In some embodiments, the first grinding mill 31 is a semi-autogenous mill, which adds forged balls during operation. The initial ball diameters are 120mm, 100mm, and 80mm, with a mass ratio of 19:24:5. After normal ball addition, 120mm steel balls can be added directly. The second grinding mill 37 is a ball mill, which adds forged balls during operation. The initial ball diameters are 80mm, 60mm, 40mm, and 30mm, with a mass ratio of 20:29:30:19. Generally, steel balls with a single diameter of 80mm are added. If the ore is easy to grind, steel balls with a single diameter of 60mm are added.

[0031] In this optional solution, such as Figure 1 As shown, the processing circuit 35 includes a fourth conveyor 351, a fifth conveyor 352, and a sixth conveyor 353 arranged sequentially and connected, as well as an iron separator 354 arranged above the fourth conveyor 351 for iron removal. The fourth conveyor 351 is used to receive the oversize products from both the first cylindrical screen 311 and the second vibrating screen 32. The discharge end of the sixth conveyor 353 is connected to the third conveyor 23 so that the oversize products inside can re-enter the first grinding mill 31. During operation, when the ore has good grindability and the current of the first grinding mill 31 is low, the stubborn stones on the screen of the first cylindrical screen 311 can bypass and directly return to the first grinding mill 31, avoiding damage to the liner of the semi-autogenous mill by the steel balls. Alternatively, the discharge end of the sixth conveyor 353 is also connected to a second crusher 355, and the discharge end of the second crusher 355 is connected to the third conveyor 23. The second crusher 355 is used to crush the oversize products inside and allow the finely crushed products to fall into the third conveyor 23 below.

[0032] During operation, the products over the first cylindrical screen 311, the second vibrating screen 32, and the second cylindrical screen 371 are fed together to the fourth conveyor 351, where iron is removed by the iron remover 354 above it. The material on the fourth conveyor 351 is then fed to the fifth conveyor 352, the material on the fifth conveyor 352 is fed to the sixth conveyor 353, the product on the sixth conveyor 353 is fed to the second crusher 355, and the crushed material is fed to the third conveyor 23 and returned to the first grinding mill 31. Alternatively, the route can be changed to bypass the second crusher 355 and feed directly to the third conveyor 23.

[0033] In some embodiments, the fourth conveyor 351 is perpendicular to the line of the first grinding mill 31 and the second grinding mill 37, the fifth conveyor 352 is perpendicular to the fourth conveyor 351, and the sixth conveyor 353 is perpendicular to the fifth conveyor 352; in some embodiments, a rock storage bin is installed below the sixth conveyor 353.

[0034] In some embodiments, the second crusher 355 is a cone crusher, and a rock bin may be built below it to temporarily store rocks; in some embodiments, the feed particle size range of the cone crusher is 0-150mm.

[0035] Optionally, such as Figure 1 As shown, the feeding system 6 includes a raw ore bin 61, a second ore clamp 62 for feeding the sorted high-oxidation-rate copper-cobalt ore into the raw ore bin, a third plate feeder 63 located below the outlet of the raw ore bin, and a seventh conveyor 64 connected to the output end of the third plate feeder 63. The seventh conveyor 64 is used to transport the high-oxidation-rate copper-cobalt ore to the washing system 7. During operation, the second ore clamp 62 feeds the high-oxidation-rate copper-cobalt ore into the raw ore bin 61. The raw ore bin 61 has a screen with a size of 250mm*250mm above it. The third plate feeder 63 feeds the ore from the raw ore bin 61 to the seventh conveyor 64, so that it can enter the intermediate stockpile system 2 via the second conveyor 17.

[0036] In some embodiments, the third plate feeder 63 is inclined upward at a certain angle of 14° to 18° at the bottom of the powder ore bin 61, and a steel strip curtain is installed at the head of the plate to buffer the ore.

[0037] Optionally, such as Figure 1 As shown, the ore washing system 7 includes a ore washing machine 71, an eighth conveyor 72, a second slurry pump tank 73, and a second feed slurry pump 74 connected to the second slurry pump tank 73. The ore washing machine 71 is used to wash high-oxidation-rate copper-cobalt ore powder, and the oversize product separated from the washing enters the eighth conveyor 72. The discharge end of the eighth conveyor 72 is connected to the second conveyor 17, so that the oversize product separated from the washing enters the intermediate stockpile system 2, while the undersize product separated from the washing enters the second slurry pump tank 73. The second feed slurry pump 74 pumps the slurry into the ore powder grinding system 8.

[0038] During operation, the seventh conveyor 64 feeds the material into the washing machine 71, which separates lumps larger than 30mm from powders smaller than 30mm. The undersized material is fed into the second slurry pump tank 73, and the material in the second slurry pump tank 73 is fed to the next process stage via the second feed slurry pump 74. The oversized material is fed to the eighth conveyor 72, which feeds the ore to the second conveyor 17 of the lump ore crushing and grinding system for further processing in the intermediate ore stockpile 21.

[0039] Optionally, such as Figure 1As shown, the ore grinding system 8 includes a thickener 81, a thickener underflow pump 82 connected to the thickener 81, a third slurry pump pool 83 connected to the thickener underflow pump 82, a third feed slurry pump 84 connected to the third slurry pump pool 83, a second hydrocyclone group 85, and a third grinding mill 86. The thickener underflow pump 82 is used to pump the underflow from the thickener 81 into the third slurry pump pool 83. The third feed slurry pump 84 is used to pump the slurry into the second hydrocyclone group 85. The second hydrocyclone group 85 is used to perform hydrocyclone classification of the slurry, and the overflow product from the classification enters the next stage of flotation desulfurization, while the classified underflow enters the third grinding mill 86. The outlet of the third grinding mill 86 is equipped with a third cylindrical screen 861, which is used to screen the grinding product and return the undersized product to the third slurry pump pool 83.

[0040] During operation, the underflow product after washing is fed to thickener 81. The underflow pump 82 of thickener 81 then pumps the underflow in thickener 81 to the third slurry pump tank 83. The slurry in the third slurry pump tank 83 is then pumped to the second hydrocyclone group 85 through the third feed slurry pump 84. The underflow from the hydrocyclone is fed to the third grinding mill 86 for grinding. The grinding product is returned to the third slurry pump tank 83, and the overflow from the hydrocyclone enters the flotation system for desulfurization.

[0041] In some embodiments, the third grinding mill 86 adds forged balls with initial ball diameters of 80mm, 60mm, 40mm, and 30mm, respectively, and a mass ratio of 20:29:30:19. Generally, a single steel ball with a diameter of 80mm is added. If the ore is easy to grind, a single steel ball with a diameter of 60mm is added.

[0042] Reference Figure 1 The preferred embodiment of the present invention also provides a high-oxidation-rate copper-cobalt ore crushing and grinding process, employing a high-oxidation-rate copper-cobalt ore crushing and grinding system as described above, the crushing and grinding process comprising the following steps: Ore classification: High-oxidation-rate copper-cobalt ore is classified into lump high-oxidation-rate copper-cobalt ore (feed particle size 0-1200mm) and fine high-oxidation-rate copper-cobalt ore (feed particle size 0-250mm) according to the feed particle size range and maximum feed particle size.

[0043] Subsystem processing: A lump ore crushing and grinding system is used to process high-oxidation-rate lump copper-cobalt ore separately, a powder ore crushing and grinding system is used to process high-oxidation-rate powder copper-cobalt ore, and a lump ore crushing and grinding system is also used to process the oversize products separated from the washing of the powder ore crushing and grinding system.

[0044] This invention separates high-oxidation-rate copper-cobalt ore into lump high-oxidation-rate copper-cobalt ore and fine high-oxidation-rate copper-cobalt ore. A lump high-oxidation-rate copper-cobalt ore crushing and grinding system is used to process the lump ore separately, while a fine high-oxidation-rate copper-cobalt ore crushing and grinding system is used to process the oversize product separated from the washing process in the fine high-oxidation-rate copper-cobalt ore. This achieves separate processing of high-oxidation-rate copper-cobalt ore fines and lump ore. For lump high-oxidation-rate copper-cobalt ore, it has high acid-consuming gangue content, high leaching acid consumption, good ore beneficiation properties, and low beneficiation costs. Therefore, it can beneficiated and purified to reduce the acid-consuming gangue content in the concentrate product, and combined beneficiation and metallurgical processing can achieve better purification results. For fine high-oxidation-rate copper-cobalt ore, it has poor beneficiation properties, high mud content, high reagent consumption, low beneficiation recovery rate, and high beneficiation costs. However, it has low acid-consuming gangue content and fast leaching speed. It can be leached after grinding and desulfurization to increase throughput. The process of this invention separates high-oxidation-rate copper-cobalt ore into lump ore and fine ore. The lump ore requires systematic beneficiation treatment, which involves grinding the ore to -0.074mm (meaning a particle size below 0.074mm) to account for 73-78%, allowing for sufficient individual liberation of copper-cobalt minerals and achieving better purification results. The fine ore only requires grinding followed by desulfurization, and the copper sulfide concentrate is then regrinded and re-selected. The fine ore only needs to be crushed to -0.074mm to account for 58%-65%, which reduces the consumption of leaching acid, grinding unit consumption, and auxiliary material unit consumption, and increases the throughput. Compared to processing high-oxidation-rate copper-cobalt ore powder and lump ore simultaneously, if grinding and desulfurization are used followed by leaching, the lump ore will contain more acid-consuming substances, thus greatly increasing the leaching cost. If powder and lump ore are subjected to systematic beneficiation, not only is it necessary to increase the grinding fineness and grinding cost, but the powder ore also contains a lot of mud, which will consume a large amount of flotation reagents, resulting in a low beneficiation recovery rate, and some copper and cobalt-containing minerals will be lost to the tailings.

[0045] Optionally, the step "subsystem processing" includes the processing of lump ore high oxidation rate copper-cobalt ore by using a lump ore crushing and grinding system and the oversize product separated from the washing of powder ore by a powder ore crushing and grinding system, and the processing of powder ore high oxidation rate copper-cobalt ore by using a powder ore crushing and grinding system.

[0046] The lump ore crushing and grinding system includes a feeding crushing system 1, an intermediate stockpile system 2, and a lump ore grinding system 3, which are arranged and connected in sequence. The lump ore crushing and grinding process specifically includes the following steps: The feeding and crushing system 1 is used to feed, screen and crush the lump copper-cobalt ore with high oxidation rate, and the resulting coarse crushed product is transported to the intermediate stockpile system 2.

[0047] The intermediate stockpile system 2 is used to stockpile coarse crushed products into stockpile products, which are then transported to the lump ore grinding system 3.

[0048] The lump ore grinding system 3 is used to repeatedly grind and screen the stockpile ore products, and to sequentially pulp and classify the qualified grinding products. The overflow products from the classification are sent to the next stage of flotation, and the classified sand is ground and then returned to pulping.

[0049] Specifically, the detailed steps are as follows: (1) The ore is poured into the lump ore bin 11 by the ore card 12. The ore is fed to the first vibrating screen 14 by the first plate feeder 13. The ore on the screen is crushed by the first crusher 15. The crushed product has a particle size of less than 250mm. The product under the screen of the first vibrating screen 14 and the product crushed by the first crusher 15 are sent to the intermediate ore pile 21 for storage by the first conveyor 16 and the second conveyor 17. (2) The second plate feeder 22 under the intermediate ore pile 21 feeds the ore evenly to the first grinding mill 31 by the third conveyor 23 for grinding. The grinding concentration is 65% to 95%. The discharge particle size of the first grinding mill 31 is -2mm (meaning less than 2mm) accounting for 80%. The screen aperture of the first cylindrical screen 311 is generally 20mm*40mm. Different screen aperture sizes can be changed according to different ore properties. The material under the first cylindrical screen 311 is fed to the second vibrating screen 32. The screen aperture size of the second vibrating screen 32 is generally 15mm*30mm. Different screen aperture sizes can be changed according to different ore properties. The material under the second vibrating screen 32 is fed to the first slurry pump pool 33. The grinding product is pumped to the first hydrocyclone group 36 by the first feed slurry pump 34. The overflow of the hydrocyclone enters the flotation system for flotation separation. (3) The concentration of sediment in hydrocyclones is generally between 65% and 85%, and -0.074mm generally accounts for 8% to 20%. The concentration of overflow products in hydrocyclones is between 25% and 40%, and the fineness of overflow products in hydrocyclones is generally between 73% and 78%, so that copper-containing minerals can be fully dissociated.

[0050] The ore powder crushing and grinding system includes a feeding system 6, a washing system 7, and an ore powder grinding system 8, which are arranged and connected in sequence. The ore powder crushing and grinding process specifically includes the following steps: The feeding system 6 is used to feed the fine copper-cobalt ore with a high oxidation rate to the washing system 7.

[0051] The ore washing system 7 is used to wash the ore and the oversize product after washing is transported to the intermediate stockpile system 2. The undersize product after washing is transported to the ore grinding system 8.

[0052] The ore grinding system employs pulping and cyclone classification, with the overflow product from the classification going to the next stage of flotation desulfurization, and the classified sand returning to the pulping process after grinding.

[0053] Specifically, the detailed steps are as follows: (1) The second ore truck 62 pours the ore into the fine ore bin 61. There is a screen above the fine ore bin 61 with a screen aperture of 250mm*250mm. The third plate feeder 63 feeds the ore. The ore is fed to the washing machine 71 by the seventh conveyor 64. The washing machine is equipped with an ultrasonic generator, which greatly reduces the consumption of water for the drum spray and ensures the concentration of the slurry under the screen of the washing machine 71. The water consumption for washing is generally 0.5~1m³ / t. The washing machine is a drum type washing machine with a 30mm*30mm screen. The product on the screen after washing is fed to the eighth conveyor 72. The conveyor 72 is equipped with a closed drying system to reduce the moisture content of the ore to below 10% (the drying system parameters are controlled according to the actual moisture content), preventing the ore from hitting the intermediate ore pile 21 and causing a landslide. The ore is then fed to the intermediate ore pile 21 of the lump ore crushing and grinding system via the second conveyor 17 for storage. When the intermediate ore pile 21 of the lump ore crushing and grinding system needs maintenance, the ore over the screen can be temporarily stored by truck. The undersize product of the washing machine 71 is fed to the second slurry pump pool 73, and the pump pool product is fed to the third slurry pump pool 83 of the powder ore grinding system via the second feed slurry pump 74. (2) A third slurry pump 84 is installed on the side of the third slurry pump pool 83 to pump the slurry in the second slurry pump pool 73 to the second hydrocyclone group 85. The concentration of the sediment in the hydrocyclone is generally between 60% and 85%, and the content of sediment -0.074mm is generally between 5% and 20%. The particle size of the hydrocyclone overflow product is 58% to 65%, and the overflow concentration is 25% to 45%. It should be noted that the fineness requirement of the hydrocyclone overflow product is not high. It is only necessary to achieve the purpose of desulfurization. The desulfurized flotation rough concentrate is then finely ground and enriched.

[0054] Example The following examples describe the disclosure of this invention in more detail. These examples are merely illustrative, as various modifications and variations will be apparent to those skilled in the art within the scope of this disclosure. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are based on weight, and all reagents used in the examples are commercially available or synthesized by conventional methods and can be used directly without further processing. The instruments used in the examples are also commercially available.

[0055] Example 1 The crushing and grinding system and process of this invention are used to process a high-oxidation-rate copper-cobalt ore with an oxidation rate of approximately 80%. The ore contains 2.41% copper and 0.12% cobalt, with a bulk density of 1.75 t / m³ and a maximum particle size of 1200 mm. This ore originates from an open-pit mine and is a highly sludge-based, high-oxidation-rate copper-cobalt ore. During extraction from the mine, the ore is divided into lump ore piles and fine ore piles, fed using ore clips. The lump ore crushing and grinding system has a supply capacity of 498 t / h, and the fine ore crushing and grinding system has a supply capacity of 250 t / h. For high-oxidation-rate copper-cobalt ore in lump form, after crushing by the feeding crushing system 1, the ore particle size is ≤250mm. It is then fed to the intermediate ore pile 21 for storage. The second plate feeder 22 at the bottom of the intermediate ore pile feeds the semi-autogenous mill at a rate of 480t / h to 680t / h. More than 80% of the material passing through the semi-autogenous mill screen is less than 2mm. The overflow product entering the flotation system is -0.074mm, accounting for 74%. For high-oxidation-rate copper-cobalt ore in fine form, the 61-grid screen in the fine ore bin has a screen size of 250mm*250mm. After washing, the material with particles larger than 30mm on the screen is fed to the intermediate ore pile 21 of the lump ore system. The fine ore is then fed to the ball mill for grinding at a rate of 120t / h to 220t / h. The overflow product entering the flotation system is -0.074mm, accounting for 61%.

[0056] Example 2 The crushing and grinding system and process of this invention are used to process a high-oxidation-rate copper-cobalt ore with an oxidation rate of approximately 90%. The ore contains 3.18% copper and 0.21% cobalt, with a bulk density of 1.70 t / m³ and a maximum ore particle size of 1200 mm. This ore originates from an open-pit mine. During extraction from the mine, the ore is divided into lump ore piles and fine ore piles, fed using ore clamps. The lump ore crushing and grinding system has a supply capacity of 350 t / h, and the fine ore crushing and grinding system has a supply capacity of 300 t / h. For high-oxidation-rate copper-cobalt ore in lump form, after crushing by the feeding crushing system 1, the ore particle size is ≤250mm. It is then fed to the intermediate ore stockpile 21 for storage. The second plate feeder 22 at the bottom of the intermediate ore stockpile feeds the semi-autogenous mill with a feed rate of 300t / h to 500t / h. More than 80% of the material passing through the semi-autogenous mill screen is less than 2mm. 75% of the overflow product entering the flotation system is -0.074mm. For high-oxidation-rate copper-cobalt ore in fine form, the screen size of the raw ore bin screen is 250mm*250mm. After washing, the material with a particle size greater than 30mm is fed to the intermediate ore stockpile 21 of the lump ore system. The fine ore is fed to the ball mill for grinding with a feed rate of 150t / h to 250t / h. 60% of the overflow product entering the flotation system is -0.074mm.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-oxidation-rate copper-cobalt ore crushing and grinding system, characterized in that, include: A crushing and grinding system for processing high-oxidation copper-cobalt ore with a large feed particle size range and a large maximum feed particle size separated from mineral processing, and a crushing and grinding system for processing high-oxidation copper-cobalt fines with a small feed particle size range and a small maximum feed particle size separated from mineral processing. The lump ore crushing and grinding system includes a feeding crushing system (1), an intermediate stockpile system (2), and a lump ore grinding system (3) that are set up and connected sequentially along the lump ore high oxidation rate copper-cobalt ore processing flow. The feeding crushing system (1) is used to feed, screen and crush the lump ore high oxidation rate copper-cobalt ore, and to transport the coarse crushed product to the intermediate stockpile system (2). The intermediate stockpile system (2) is used to stockpile the coarse crushed product to form stockpile product and to transport it to the lump ore grinding system (3). The lump ore grinding system (3) is used to repeatedly grind and screen the stockpile product, and to sequentially pulp and classify the qualified grinding product, and to send the overflow product to the next stage of flotation, and the graded sand is ground and then returned to pulp. The powdered ore crushing and grinding system includes a feeding system (6), a washing system (7), and a powdered ore grinding system (8) that are set up sequentially and connected along the processing flow of high oxidation rate copper-cobalt powdered ore. The feeding system (6) is used to feed high oxidation rate copper-cobalt powdered ore to the washing system (7). The washing system (7) is used to wash the ore and transport the oversize product after washing to the intermediate stockpile system (2) and the undersize product after washing to the powdered ore grinding system (8). The powdered ore grinding system (8) is used for pulping and cyclone classification, and the overflow product of classification is sent to the next stage of flotation desulfurization. The classified sand is returned to pulping after grinding.

2. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The feeding and crushing system (1) includes a lump ore bin (11), a first ore carbide (12) for feeding the sorted lump high oxidation rate copper-cobalt ore into the lump ore bin (11), a first plate feeder (13) arranged below the outlet of the lump ore bin (11), a first vibrating screen (14) connected to the output end of the first plate feeder (13), a first crusher (15) connected to the output end of the first vibrating screen (14), and a first conveyor (16) and a second conveyor (17) arranged in sequence. The first conveyor (16) is located below the first plate feeder (13), the first vibrating screen (14) and the first crusher (15). The second conveyor (17) is located below the output end of the first conveyor (16). The first conveyor (16) is used to receive the undersize product of the first vibrating screen (14) and the crushed product of the first crusher (15) and transport them to the second conveyor (17). The oversize product of the first vibrating screen (14) enters the first crusher (15). The second conveyor (17) is used to transport the coarse crushed product formed by the undersize product of the first vibrating screen (14) and the crushed product of the first crusher (15) to the intermediate stockpile system (2).

3. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The intermediate stockpile system (2) includes an intermediate stockpile (21) formed by stockpiling coarse crushed products, a second plate feeder (22) located at the bottom of the intermediate stockpile (21), and a third conveyor (23) located below the second plate feeder (22). The third conveyor (23) is used to transport the stockpile products to the lump ore grinding system (3).

4. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The lump ore grinding system (3) includes a first grinding mill (31), a second vibrating screen (32) located below the outlet of the first grinding mill (31), a first slurry pump pool (33) located below the second vibrating screen (32), a processing circuit (35), a first hydrocyclone group (36) and a second grinding mill (37). The outlet of the first grinding mill (31) is provided with a first cylindrical screen (311), which is used to screen the coarsely ground products and cause the undersized products to fall into the second vibrating screen (32) below, while the oversized products enter the processing circuit (35). The second vibrating screen (32) is used to further screen the undersize product of the first cylindrical screen (311) and let the undersize product fall into the first slurry pump pool (33) below, while the oversize product enters the processing circuit (35). The processing circuit (35) is used to process the oversize product on it and then transport it back to the first grinding mill (31). The first slurry pump pool (33) is connected to the first slurry feed pump (34), which is used to pump the slurry into the first hydrocyclone group (36). The first hydrocyclone group (36) is used to perform hydrocyclone classification on the slurry and to allow the overflow product of the classification to enter the next stage of flotation, while the classified sand enters the second grinding mill (37). The outlet of the second grinding mill (37) is provided with a second cylindrical screen (371), which is used to screen the finely ground product and return the screened product to the first slurry pump pool (33).

5. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 4, characterized in that, The processing circuit (35) includes a fourth conveyor (351), a fifth conveyor (352) and a sixth conveyor (353) arranged in sequence and connected together, and an iron remover (354) arranged above the fourth conveyor (351) for removing iron. The fourth conveyor (351) is used to receive the products from both the first cylindrical screen (311) and the second vibrating screen (32); The discharge end of the sixth conveyor (353) is connected to the third conveyor (23) so that the oversize product inside can re-enter the first grinding mill (31); or The discharge end of the sixth conveyor (353) is also connected to the second crusher (355), and the discharge end of the second crusher (355) is connected to the third conveyor (23). The second crusher (355) is used to crush the screened products inside and to make the fine crushed products fall into the third conveyor (23) below.

6. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The feeding system (6) includes a raw ore bin (61), a second ore carbide (62) for feeding the sorted high-oxidation copper-cobalt ore into the raw ore bin, a third plate feeder (63) located below the outlet of the raw ore bin, and a seventh conveyor (64) connected to the output end of the third plate feeder (63). The seventh conveyor (64) is used to transport the high-oxidation copper-cobalt ore to the washing system (7).

7. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The ore washing system (7) includes an ore washing machine (71), an eighth conveyor (72), a second slurry pump pool (73), and a second ore feed slurry pump (74) connected to the second slurry pump pool (73). The washing machine (71) is used to wash the high oxidation rate copper-cobalt ore powder and to send the oversize product separated from the washing to the eighth conveyor (72). The discharge end of the eighth conveyor (72) is connected to the second conveyor (17) so that the oversize product separated from the washing enters the intermediate stockpile system (2), while the undersize product separated from the washing enters the second slurry pump pool (73). The second feed slurry pump (74) pumps the slurry into the powder grinding system (8).

8. The high-oxidation-rate copper-cobalt ore crushing and grinding system according to claim 1, characterized in that, The ore grinding system (8) includes a thickener (81), a thickener underflow pump (82) connected to the thickener (81), a third slurry pump pool (83) connected to the thickener underflow pump (82), a third feed slurry pump (84) connected to the third slurry pump pool (83), a second hydrocyclone group (85), and a third grinding mill (86). The thickener underflow pump (82) is used to pump the underflow of the thickener (81) into the third slurry pump pool (83). The third feed slurry pump (84) is used to pump the slurry into the second hydrocyclone group (85). The second hydrocyclone group (85) is used to perform hydrocyclone classification of the slurry and to allow the overflow product of the classification to enter the next stage of flotation desulfurization. The classified sand enters the third grinding mill (86). The outlet of the third grinding mill (86) is provided with a third cylindrical screen (861), which is used to screen the abrasive products and return the undersized products to the third slurry pump pool (83).

9. A high-oxidation-rate copper-cobalt ore crushing and grinding process, characterized in that, The high-oxidation-rate copper-cobalt ore crushing and grinding system as described in any one of claims 1-8 includes the following steps: Ore classification: High-oxidation-rate copper-cobalt ore is classified into lump high-oxidation-rate copper-cobalt ore and fine high-oxidation-rate copper-cobalt ore according to the feed particle size range and maximum feed particle size; Subsystem processing: A lump ore crushing and grinding system is used to process high-oxidation-rate lump copper-cobalt ore separately, a powder ore crushing and grinding system is used to process high-oxidation-rate powder copper-cobalt ore, and a lump ore crushing and grinding system is also used to process the oversize products separated from the washing of the powder ore crushing and grinding system.

10. The high-oxidation-rate copper-cobalt ore crushing and grinding process according to claim 9, characterized in that, The step "subsystem processing" includes the crushing and grinding of lump high-oxidation copper-cobalt ore using a lump crushing and grinding system and the over-screen products separated from the washing and grinding of fine ore using a fine ore crushing and grinding system; and the fine ore crushing and grinding of high-oxidation copper-cobalt ore using a fine ore crushing and grinding system. The lump ore crushing and grinding system includes a feeding crushing system (1), an intermediate stockpile system (2), and a lump ore grinding system (3) that are arranged and connected in sequence. The lump ore crushing and grinding process specifically includes the following steps: The feeding and crushing system (1) is used to feed, screen and crush the high oxidation rate copper-cobalt ore, and the resulting coarse crushed product is transported to the intermediate stockpile system (2). An intermediate stockpile system (2) is used to stockpile coarse crushed products into stockpile products, which are then transported to a lump ore grinding system (3). The lump ore grinding system (3) is used to repeatedly grind and screen the stockpile ore products, and to successively pulp and classify the qualified grinding products, and to send the overflow products of the classification to the next stage of flotation, and the classified sand is ground and then returned to pulping. The ore powder crushing and grinding system includes a feeding system (6), a washing system (7), and an ore powder grinding system (8) that are arranged and connected in sequence. The ore powder crushing and grinding process specifically includes the following steps: The feeding system (6) is used to feed the high oxidation rate copper-cobalt ore powder into the washing system (7). The ore washing system (7) is used to wash the ore and the oversize product after washing is transported to the intermediate stockpile system (2), and the undersize product after washing is transported to the ore grinding system (8). The ore grinding system (8) is used for pulping and cyclone classification, and the overflow product of the classification is sent to the next stage of flotation desulfurization, while the classified sand is ground and returned to pulping.

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