A beneficiation method for comprehensive recovery of copper, molybdenum and bismuth from low-grade silver rock tin ore

Abstract

The invention discloses a beneficiation method for comprehensively recovering copper, molybdenum and bismuth from low-grade silver rock tin ore. The method comprises coarse grinding of raw ore, flotation of copper, molybdenum and the like, separation of copper and molybdenum, enhanced copper flotation and separation of copper and bismuth. The method has the characteristics of simple reagent system, strong pertinence and low consumption, convenient operation and management, good separation effect, stable indicators and good reproducibility, and can effectively reduce metal interconcentration, improve the grade of concentrate and improve the recovery effect of target minerals.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral processing, and in particular to a beneficiation method for comprehensively recovering copper, molybdenum and bismuth from low-grade silver rock tin ore. Background Art

[0002] The primary molybdenum, bismuth, and copper sulfide minerals in the ore not only possess similar flotation characteristics, but also have associated valuable minerals of low grade. The minerals exhibit a close intergrowth relationship, with sulfide minerals coexisting with oxide minerals and sulfide minerals, resulting in a high degree of oxidation and uneven distribution of valuable minerals, making comprehensive recovery of the valuable minerals difficult. In their paper, "Comprehensive Recovery of Associated Molybdenum, Bismuth, and Copper in a Tin Ore," Hu Cheng, Ye Xuejun, Wu Dong, et al. proposed a beneficiation process for a specific tin ore containing associated molybdenum, bismuth, and copper: mixed flotation of molybdenum, bismuth, and copper, followed by regrinding and drug removal of the mixed concentrate, followed by copper suppression flotation of molybdenum, bismuth, and separation. Both the proposed "molybdenum, bismuth, and copper mixed flotation - copper suppression flotation of molybdenum, bismuth, and molybdenum-bismuth separation" and "preferential molybdenum flotation - copper-bismuth separation" processes utilize sodium cyanide solutions, which pose significant environmental risks, are difficult to manage, present significant intermetallic content, and yield suboptimal production performance.

[0003] It can be seen that for low-grade tin ores with associated copper, molybdenum and bismuth, the development of a separation method with good separation effect, strong operability, high selection index and economy and environmental protection has very important practical significance for broadening the efficient utilization, comprehensive utilization and energy conservation and emission reduction technologies of resources and enabling the efficient development and utilization of the mine. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention aims to provide a beneficiation method for comprehensively recovering copper, molybdenum and bismuth from low-grade silver rock tin ore.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A beneficiation method for comprehensively recovering copper, molybdenum and bismuth from low-grade silver rock tin ore comprises the following steps:

[0007] (1) Coarse grinding of raw ore: Add lime to the raw ore until the pH is 7-7.5, then add water for grinding;

[0008] (2) Copper, molybdenum and other floatable materials: the pulp obtained from the grinding in step (1) is subjected to copper, molybdenum and other floatable roughing separation to obtain copper, molybdenum and other floatable roughing separation concentrate and copper, molybdenum and other floatable roughing separation tailings; the copper, molybdenum and other floatable roughing separation tailings are subjected to copper, molybdenum and other floatable scavenging separation to obtain copper, molybdenum and other floatable scavenging separation concentrate and copper, molybdenum and other floatable scavenging separation tailings; the copper, molybdenum and other floatable roughing separation concentrate is transferred to step (3) for treatment, the copper, molybdenum and other floatable tailings are transferred to step (4) for treatment, the copper, molybdenum and other floatable scavenging separation tailings and the copper, molybdenum and other floatable scavenging separation concentrate are combined and returned to the copper, molybdenum and other floatable roughing separation operation; wherein, based on the dry weight of each ton of raw ore, 300-500g / t of sodium sulfite, 15-20g / t of Z200 and 20-30g / t of MIBC are added in the copper, molybdenum and other floatable roughing separation operation in sequence. g / t, copper, molybdenum and other minerals can be added in the flotation sweeping operation in sequence: sodium sulfite 200-300g / t, Z200 8-10g / t and MIBC 10-15 g / t;

[0009] (3) Copper-molybdenum separation: copper, molybdenum and other floatable concentrates are subjected to copper-molybdenum separation roughing to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings. The copper-molybdenum separation roughing concentrate is sequentially subjected to molybdenum concentration I, molybdenum concentration II, molybdenum concentration III and molybdenum concentration IV to obtain molybdenum concentrate. The copper-molybdenum separation roughing tailings are subjected to copper-molybdenum separation scavenging to obtain copper concentrate I and copper-molybdenum separation scavenging tailings. The copper-molybdenum separation scavenging tailings and the tailings obtained from molybdenum concentration I are combined and returned to the copper-molybdenum separation roughing operation. The tailings obtained from molybdenum concentration II are returned to the molybdenum concentration I operation. The tailings obtained from molybdenum concentration III are returned to the molybdenum concentration II operation. The tailings obtained from molybdenum concentration IV are returned to the molybdenum concentration III operation. Among them, based on the dry weight of each ton of raw ore, the copper-molybdenum separation roughing concentrate is During the selection process, 20-30g / t of water glass, 100-150g / t of sodium sulfide and 10-15g / t of kerosene are added in sequence; during the copper-molybdenum separation and sweeping process, 40-50g / t of sodium sulfide and 4-5g / t of kerosene are added in sequence; during the molybdenum concentration I process, 15-20g / t of water glass, 40-50g / t of sodium sulfide and 4-5g / t of kerosene are added in sequence; during the molybdenum concentration II process, 10-15g / t of water glass, 20-25g / t of sodium sulfide and 2-3g / t of kerosene are added in sequence; during the molybdenum concentration III process, 10-15g / t of sodium sulfide is added; and during the molybdenum concentration IV process, 10-15g / t of water glass is added;

[0010] (4) Enhanced copper flotation: Floatable tailings such as copper and molybdenum are subjected to enhanced copper roughing operation to obtain enhanced copper roughing concentrate and enhanced copper roughing tailings, and the enhanced copper roughing tailings are subjected to enhanced copper scavenging to obtain enhanced copper scavenging concentrate and tailings, and the enhanced copper roughing concentrate is subjected to enhanced copper concentration to obtain enhanced copper concentrate and enhanced copper concentration tailings; the enhanced copper concentration tailings and enhanced copper scavenging concentrate are combined and returned to the enhanced copper roughing operation; wherein, based on the dry weight of each ton of raw ore, 150-200 g / t of sodium sulfite, 20-30 g / t of butyl xanthate and 20-30 g / t of MIBC are added in the enhanced copper roughing operation in sequence, 100-150 g / t of sodium sulfite, 10-15 g / t of butyl xanthate and 10-15 g / t of MIBC are added in the enhanced copper scavenging operation in sequence, and 100-150 g / t of sodium sulfite is added in the enhanced copper concentration operation.

[0011] (5) Copper-bismuth separation: After adding Z200 1-2 g / t to the enhanced copper concentrate obtained in step (4), bismuth concentrate, shaker table flotation ore and copper concentrate are obtained by table flotation. The shaker table flotation ore is concentrated and then returned to the regrinding operation of the enhanced copper coarse concentrate.

[0012] Furthermore, in step (1), when water is added for grinding, the weight ratio of water to ore is 2:3, and the grinding to a grinding fineness of -0.074 mm accounts for 50-55%.

[0013] Furthermore, in step (2), the floatable rougher concentrate of copper, molybdenum, etc. enters the floatable concentration operation of copper, molybdenum, etc. after regrinding operation.

[0014] Furthermore, in step (2), the floatable rougher concentrates such as copper and molybdenum are ground again to a grinding fineness of -0.038 mm, accounting for 80%-85%.

[0015] Furthermore, in step (4), the enhanced copper rougher concentrate is subjected to regrinding operation and then enters the enhanced copper concentration operation.

[0016] Furthermore, in step (4), the copper rougher concentrate is further ground to a grinding fineness of -0.038 mm, which accounts for 80%-85%.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present method fully leverages the mineral's inherent flotation properties, achieving optimal and harmonious recovery without compromising tin metal recovery or the comprehensive utilization of tailings. The coarse grinding plus regrinding process ensures the required tin ore gravity separation particle size, avoiding over-grinding and resulting gravity separation losses, while also reducing grinding load and improving grinding efficiency. Furthermore, it allows for the regrinding of floatable rougher concentrates such as copper and molybdenum (i.e., copper-molybdenum rougher concentrates) and enhanced copper rougher concentrates (i.e., copper-bismuth rougher concentrates), resulting in high-grade concentrates through deep dissociation of intergrowths. This process features a simple reagent system, highly targeted and low-consumption methods, easy operation and management, excellent separation efficiency, and stable and reproducible performance indicators.

[0019] 2) The method of the present invention uses sodium sulfite to suppress pyrite under neutral conditions, thereby avoiding the loss of molybdenite and bismuthinite that is easily suppressed under alkaline conditions (conventionally, lime is used as a suppressant). At the same time, the foam viscosity is reduced, which is beneficial to the separation and removal of copper-molybdenum and copper-bismuth. MIBC is used as a foaming agent, and the foam is brittle and easily dissipated, which greatly reduces the unfavorable factors such as abundant foam, difficult drug removal, and severe entrainment during the separation of copper-molybdenum and copper-bismuth. After the coarse concentrate is regrinded, the drug is completely removed, the metal interconcentration is reduced, and the concentrate grade is improved.

[0020] 3) The method of the present invention fully utilizes the characteristics of copper-bismuth minerals and adopts a table flotation process, thus avoiding the incomplete separation that can occur in single gravity separation or flotation operations and reducing the interconcentration of copper and bismuth. In addition, after the table flotation concentrate is concentrated, it is returned to the intensified copper rough concentrate regrinding operation, forming a major grinding and flotation cycle, which deeply dissociates the intergrowth and improves the recovery efficiency of the target mineral. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the method flow of each embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0023] The Yinyan tin ore used in the following examples is a fine-grained, disseminated, polymetallic porphyry tin deposit. Its primary valuable element is tin, with minor amounts of molybdenum, bismuth, and copper, all of which are recoverable. The associated valuable elements, such as molybdenum, bismuth, and copper, are primarily present as finely embedded sulfides, containing 0.019% molybdenum, 0.063% bismuth, and 0.11% copper. Example 1

[0024] like Figure 1As shown, based on the dry weight of each ton of raw ore, 100g / t of lime (pH=7) is first added to the raw ore, and water is added at a weight ratio of 2:3 to grind the ore to a grinding fineness of -0.074mm accounting for 50%.

[0025] Copper, molybdenum and other floatable products: The ore pulp obtained from grinding is subjected to copper, molybdenum and other floatable roughing separation to obtain copper, molybdenum and other floatable roughing concentrate and copper, molybdenum and other floatable roughing tailings. The copper, molybdenum and other floatable roughing tailings are subjected to copper, molybdenum and other floatable scavenging separation to obtain copper, molybdenum and other floatable scavenging concentrate and copper, molybdenum and other floatable tailings. The copper, molybdenum and other floatable roughing concentrate is regrinded to a grinding fineness of -0.038mm, accounting for 80%, and then enters the copper, molybdenum and other floatable concentration operation to obtain copper, molybdenum and other floatable concentrate and copper, molybdenum and other floatable concentration tailings. The copper, molybdenum and other floatable concentration tailings and the copper, molybdenum and other floatable scavenging concentrate are combined and returned to the copper, molybdenum and other floatable roughing operation;

[0026] Copper, molybdenum and other floatable concentrates are subjected to copper-molybdenum separation roughing to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings. The copper-molybdenum separation roughing concentrate is sequentially subjected to molybdenum concentration I, molybdenum concentration II, molybdenum concentration III and molybdenum concentration IV to obtain molybdenum concentrate. The copper-molybdenum separation roughing tailings are subjected to copper-molybdenum separation scavenging to obtain copper concentrate I and copper-molybdenum separation scavenging tailings. The copper-molybdenum separation scavenging tailings and the tailings obtained from molybdenum concentration I are combined and returned to the copper-molybdenum separation roughing operation. The tailings obtained from molybdenum concentration II are returned to the molybdenum concentration I operation. The tailings obtained from molybdenum concentration III are returned to the molybdenum concentration II operation. The tailings obtained from molybdenum concentration IV are returned to the molybdenum concentration III operation.

[0027] Floatable tailings such as copper and molybdenum are subjected to enhanced copper roughing operations to obtain enhanced copper roughing concentrate and enhanced copper roughing tailings. The enhanced copper roughing tailings are subjected to enhanced copper scavenging to obtain enhanced copper scavenging concentrate and tailings. The enhanced copper roughing concentrate is regrinded to a grinding fineness of -0.038mm accounting for 80% and then enters enhanced copper concentration to obtain enhanced copper concentrate and enhanced copper concentration tailings. The enhanced copper concentration tailings and enhanced copper scavenging concentrate are combined and returned to the enhanced copper roughing operation;

[0028] The enhanced copper concentrate is subjected to table flotation to obtain bismuth concentrate, table flotation ore concentrate and copper concentrate. The table flotation ore concentrate is concentrated and then returned to the regrinding process of the enhanced copper rough concentrate.

[0029] Among them, in the flotation roughing operation of copper, molybdenum and other minerals, sodium sulfite 300g / t, Z200 15g / t, MIBC 20g / t are added in sequence; in the flotation scavenging operation of copper, molybdenum and other minerals, sodium sulfite 200g / t, Z200 8g / t, MIBC 10g / t are added in sequence; in the enhanced copper roughing operation, sodium sulfite 150g / t, butyl xanthate 20g / t, MIBC 20g / t are added in sequence; in the enhanced copper scavenging operation, sodium sulfite 100g / t, butyl xanthate 10g / t, MIBC 10g / t, 100g / t of sodium sulfite was added to strengthen copper concentration; 20g / t of water glass, 100g / t of sodium sulfide and 10g / t of kerosene were added in sequence for copper and molybdenum separation and roughing; 40g / t of sodium sulfide and 4g / t of kerosene were added in sequence for copper and molybdenum separation and scavenging; 15g / t of water glass, 40g / t of sodium sulfide and 4g / t of kerosene were added in sequence for molybdenum concentration I; 10g / t of water glass, 20g / t of sodium sulfide and 2g / t of kerosene were added in sequence for molybdenum concentration II; 10g / t of sodium sulfide was added to molybdenum concentration III; 10g / t of water glass was added to molybdenum concentration IV; 1g / t of Z200 was added to strengthen copper concentrate. Example 2

[0030] like Figure 1 As shown, based on the dry weight of each ton of raw ore, 150g / t of lime (pH=7.5) is first added to the raw ore, and water is added at a weight ratio of 2:3 to grind the ore to a grinding fineness of -0.074mm, accounting for 55%.

[0031] Copper, molybdenum and other floatable products: The ore pulp obtained from grinding is subjected to copper, molybdenum and other floatable roughing separation to obtain copper, molybdenum and other floatable roughing concentrate and copper, molybdenum and other floatable roughing tailings. The copper, molybdenum and other floatable roughing tailings are subjected to copper, molybdenum and other floatable scavenging separation to obtain copper, molybdenum and other floatable scavenging concentrate and copper, molybdenum and other floatable tailings. The copper, molybdenum and other floatable roughing concentrate is regrinded to a grinding fineness of -0.038mm, accounting for 85%, and then enters the copper, molybdenum and other floatable concentration operation to obtain copper, molybdenum and other floatable concentrate and copper, molybdenum and other floatable concentration tailings. The copper, molybdenum and other floatable concentration tailings and the copper, molybdenum and other floatable scavenging concentrate are combined and returned to the copper, molybdenum and other floatable roughing operation;

[0032] Copper, molybdenum and other floatable concentrates are subjected to copper-molybdenum separation roughing to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings. The copper-molybdenum separation roughing concentrate is sequentially subjected to molybdenum concentration I, molybdenum concentration II, molybdenum concentration III and molybdenum concentration IV to obtain molybdenum concentrate. The copper-molybdenum separation roughing tailings are subjected to copper-molybdenum separation scavenging to obtain copper concentrate I and copper-molybdenum separation scavenging tailings. The copper-molybdenum separation scavenging tailings and the tailings obtained from molybdenum concentration I are combined and returned to the copper-molybdenum separation roughing operation. The tailings obtained from molybdenum concentration II are returned to the molybdenum concentration I operation. The tailings obtained from molybdenum concentration III are returned to the molybdenum concentration II operation. The tailings obtained from molybdenum concentration IV are returned to the molybdenum concentration III operation.

[0033] Floatable tailings such as copper and molybdenum are subjected to enhanced copper roughing operations to obtain enhanced copper roughing concentrate and enhanced copper roughing tailings. The enhanced copper roughing tailings are subjected to enhanced copper scavenging to obtain enhanced copper scavenging concentrate and tailings. The enhanced copper roughing concentrate is regrinded to a grinding fineness of -0.038mm accounting for 85% and then enters enhanced copper concentration to obtain enhanced copper concentrate and enhanced copper concentration tailings. The enhanced copper concentration tailings and enhanced copper scavenging concentrate are combined and returned to the enhanced copper roughing operation;

[0034] The enhanced copper concentrate is subjected to table flotation to obtain bismuth concentrate, table flotation ore concentrate and copper concentrate. The table flotation ore concentrate is concentrated and then returned to the regrinding process of the enhanced copper rough concentrate.

[0035] Among them, for copper, molybdenum and other flotation roughing, sodium sulfite 500g / t, Z200 20g / t, MIBC 30g / t are added in sequence; for copper, molybdenum and other flotation scavenging, sodium sulfite 300g / t, Z200 10g / t, MIBC 15g / t are added in sequence; for enhanced copper roughing, sodium sulfite 200g / t, butyl xanthate 30g / t, MIBC 30g / t are added in sequence; for enhanced copper scavenging, sodium sulfite 150g / t, butyl xanthate 15g / t, MIBC 15g / t, 150g / t of sodium sulfite is added to strengthen copper concentration; 30g / t of water glass, 150g / t of sodium sulfide and 15g / t of kerosene are added in sequence for copper and molybdenum separation and roughing; 50g / t of sodium sulfide and 5g / t of kerosene are added in sequence for copper and molybdenum separation and scavenging; 20g / t of water glass, 50g / t of sodium sulfide and 5g / t of kerosene are added in sequence for molybdenum concentration I; 15g / t of water glass, 25g / t of sodium sulfide and 3g / t of kerosene are added in sequence for molybdenum concentration II; 15g / t of sodium sulfide is added to molybdenum concentration III; 15g / t of water glass is added to molybdenum concentration IV; 2g / t of Z200 is added to strengthen copper concentrate.

[0036] The only difference between Example 2 and Example 1 is the amount of reagent used and the grinding fineness. Other conditions and implementation processes are exactly the same. The implementation results of the above two examples are shown in Table 1, indicating that copper, molybdenum and bismuth can be efficiently recovered from low-grade silver rock tin ore.

[0037] Table 1

[0038]

[0039] Those skilled in the art can make various corresponding changes and modifications based on the above technical solutions and concepts, and all of these changes and modifications should be included in the scope of protection of the claims of the present invention.

Claims

1. A beneficiation method for comprehensively recovering copper, molybdenum and bismuth from low-grade silver rock tin ore, characterized in that: The steps include: (1) Coarse grinding of raw ore: add lime to the raw ore until the pH is 7-7.5, then add water for grinding; (2) Copper, molybdenum and other floatable materials: the pulp obtained from the grinding in step (1) is subjected to copper, molybdenum and other floatable roughing separation to obtain copper, molybdenum and other floatable roughing separation concentrate and copper, molybdenum and other floatable roughing separation tailings; the copper, molybdenum and other floatable roughing separation tailings are subjected to copper, molybdenum and other floatable scavenging separation to obtain copper, molybdenum and other floatable scavenging separation concentrate and copper, molybdenum and other floatable scavenging separation tailings; the copper, molybdenum and other floatable roughing separation concentrate is transferred to step (3) for treatment, the copper, molybdenum and other floatable tailings are transferred to step (4) for treatment, the copper, molybdenum and other floatable scavenging separation tailings and the copper, molybdenum and other floatable scavenging separation concentrate are combined and returned to the copper, molybdenum and other floatable roughing separation operation; wherein, based on the dry weight of each ton of raw ore, 300-500g / t of sodium sulfite, 15-20g / t of Z200 and 20-30g / t of MIBC are added in the copper, molybdenum and other floatable roughing separation operation in sequence. g / t, copper, molybdenum and other minerals can be added in the flotation sweeping operation in sequence: sodium sulfite 200-300g / t, Z200 8-10g / t and MIBC 10-15 g / t; (3) Copper-molybdenum separation: copper, molybdenum and other floatable concentrates are subjected to copper-molybdenum separation roughing to obtain copper-molybdenum separation roughing concentrate and copper-molybdenum separation roughing tailings. The copper-molybdenum separation roughing concentrate is sequentially subjected to molybdenum concentration I, molybdenum concentration II, molybdenum concentration III and molybdenum concentration IV to obtain molybdenum concentrate. The copper-molybdenum separation roughing tailings are subjected to copper-molybdenum separation scavenging to obtain copper concentrate I and copper-molybdenum separation scavenging tailings. The copper-molybdenum separation scavenging tailings and the tailings obtained from molybdenum concentration I are combined and returned to the copper-molybdenum separation roughing operation. The tailings obtained from molybdenum concentration II are returned to the molybdenum concentration I operation. The tailings obtained from molybdenum concentration III are returned to the molybdenum concentration II operation. The tailings obtained from molybdenum concentration IV are returned to the molybdenum concentration III operation. Among them, based on the dry weight of each ton of raw ore, the copper-molybdenum separation roughing concentrate is During the selection process, 20-30g / t of water glass, 100-150g / t of sodium sulfide and 10-15g / t of kerosene are added in sequence; during the copper-molybdenum separation and sweeping process, 40-50g / t of sodium sulfide and 4-5g / t of kerosene are added in sequence; during the molybdenum concentration I process, 15-20g / t of water glass, 40-50g / t of sodium sulfide and 4-5g / t of kerosene are added in sequence; during the molybdenum concentration II process, 10-15g / t of water glass, 20-25g / t of sodium sulfide and 2-3g / t of kerosene are added in sequence; during the molybdenum concentration III process, 10-15g / t of sodium sulfide is added; and during the molybdenum concentration IV process, 10-15g / t of water glass is added; (4) Enhanced copper flotation: copper, molybdenum and other floatable tailings are subjected to enhanced copper roughing operation to obtain enhanced copper roughing concentrate and enhanced copper roughing tailings, and the enhanced copper roughing tailings are subjected to enhanced copper scavenging to obtain enhanced copper scavenging concentrate and tailings. The enhanced copper roughing concentrate is subjected to regrinding operation and then enters the enhanced copper concentration operation to obtain enhanced copper concentrate and enhanced copper concentration tailings; the enhanced copper concentration tailings and enhanced copper scavenging concentrate are combined and returned to the enhanced copper roughing operation; wherein, based on the dry weight of each ton of raw ore, 150-200 g / t of sodium sulfite, 20-30 g / t of butyl xanthate and 20-30 g / t of MIBC are added in the enhanced copper roughing operation in sequence, 100-150 g / t of sodium sulfite, 10-15 g / t of butyl xanthate and 10-15 g / t of MIBC are added in the enhanced copper scavenging operation in sequence, and 100-150 g / t of sodium sulfite is added in the enhanced copper concentration operation; (5) Copper-bismuth separation: After adding Z200 1-2 g / t to the enhanced copper concentrate obtained in step (4), bismuth concentrate, shaker table flotation ore and copper concentrate are obtained by table flotation. The shaker table flotation ore is concentrated and then returned to the enhanced copper rougher concentrate for regrinding.

2. The mineral processing method according to claim 1, characterized in that: In step (1), when water is added for grinding, the weight ratio of water to ore is 2:3, and the grinding to a grinding fineness of -0.074 mm accounts for 50-55%.

3. The mineral processing method according to claim 1, characterized in that: In step (2), the copper, molybdenum and other floatable rougher concentrates are subjected to regrinding operations and then enter the copper, molybdenum and other floatable finer operations.

4. The mineral processing method according to claim 3, characterized in that: In step (2), the floatable rougher concentrates such as copper and molybdenum are ground to a grinding fineness of -0.038mm, accounting for 80%-85%.

5. The mineral processing method according to claim 1, characterized in that: In step (4), the copper rougher concentrate is ground to a grinding fineness of -0.038 mm, accounting for 80%-85%.

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