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Beneficiation method for high-oxidation-rate copper-molybdenum paragenic ores

A beneficiation method and oxidation rate technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of difficult flotation process enrichment, high oxidation rate of copper and molybdenum, improve density, reduce acid and alkali, The effect of promoting thoroughness

Inactive Publication Date: 2016-03-23
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0007] Aiming at the technical problems that this type of high oxidation rate copper-molybdenum paragenetic ore has complex mineral composition, high copper-molybdenum oxidation rate, and molybdenum mainly exists in the form of molybdenum-calcium ore, which makes it difficult to enrich by flotation process, the present invention proposes a method for this type The beneficiation method of copper-molybdenum symbiotic ore with high oxidation rate, this method can be used for mineral processing, enrichment and recovery of copper oxide minerals and molybdenum oxide minerals in this type of high-oxidation rate copper-molybdenum symbiotic ore, and high-quality qualified copper concentrate can be obtained. ore and a relatively rich molybdenum mine, which can be used as a raw material for chemical wet leaching to produce ammonium molybdate products, so that the molybdenum oxide resources in the ore can be recycled

Method used

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  • Beneficiation method for high-oxidation-rate copper-molybdenum paragenic ores

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Using copper-molybdenum symbiotic ore with a high oxidation rate of 0.32% Cu and 0.25% Mo as raw material, the oxidation rate of Cu is 95.92%, and the oxidation rate of Mo is 87.50%. Utilize process technology of the present invention, carry out following steps, as figure 1 :

[0037] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level;

[0038] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding. At the same time, add ammonium sulfate 2000g / t and sodium sulfide 500g / t to the mill, and grind the raw ore to -0.075mm content of 65.0%;

[0039] (3) Flotation roughing operation; for the raw ore sample that has been ground, firstly stir and adjust the pulp to control the pulp concentration to 35%, and then add water glass 900g / t, penta-nine hydroxamic acid 75g / t, butyl xanthate ...

Embodiment 2

[0045] The copper-molybdenum symbiotic ore with a Cu content of 0.35% and a Mo content of 0.22% is used as a raw material. The Cu oxidation rate is 90.45%, and the Mo oxidation rate is 85.37%. Utilize process technology of the present invention, carry out following steps, as figure 1 :

[0046] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level;

[0047] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding. At the same time, add 2300g / t of ethylenediamine phosphate and 720g / t of sodium polysulfide to the mill, and grind the raw ore to -0.075mm content of 75.0%;

[0048] (3) Flotation roughing operation; for the raw ore sample that has been ground, firstly stir and adjust the pulp to control the pulp concentration to 32%, and then add water glass 1100g / t, benzylhydroxamic acid 90g / ...

Embodiment 3

[0054] The copper-molybdenum symbiotic ore with a Cu content of 0.27% and a Mo content of 0.21% is used as a raw material. The Cu oxidation rate is 92.45%, and the Mo oxidation rate is 89.97%. Utilize process technology of the present invention, carry out following steps, as figure 1 :

[0055] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level;

[0056] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding. At the same time, add 2000g / t of benzotriazole and 500g / t of sodium hydrosulfide to the mill, and grind the raw ore to -0.075mm content of 70.0%;

[0057] (3) Flotation roughing operation; for the raw ore sample that has been ground, firstly stir and adjust the pulp to control the concentration of the pulp to 38%, and then add 800g / t of water glass, 70g / t of salicylic hydroxami...

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Abstract

The invention discloses a beneficiation method for high-oxidation-rate copper-molybdenum paragenic ores. The beneficiation method comprises the following steps: (1) crushing: adopting a crusher to crush and screen raw ores, returning the raw ores with a particle size of (+)3mm to crush until the particle size of all raw cores reaches (-)3mm level; (2) carrying out ore grinding: adding the crushed raw ores with the particle size of (-)3mm into raw ore grinding equipment to carry out closed-hoop ore grinding operation, adding an activator with concentration being 1000-3000g / t and a vulcanizing agent with concentration being 250-900g / t into a grinder for grinding the raw cores until raw cores with the particle size of (-)0.075mm account for 55-80%; (3) carrying out primary flotation operation; (4) carrying out flotation scavenging operation; (5) carrying out flotation concentration operation; and (6) carrying out strong magnetic separation operation. The beneficiation method can be adopted to carry out beneficiation enrichment and recovery on copper oxide minerals and molybdenum oxide minerals in the high-oxidation-rate copper-molybdenum paragenic ores so as to obtain high-quality qualified copper concentrate and relatively enriched molybdenum middlings which can be used as raw materials for producing an ammonium molybdate product by chemical wet-process leaching, so that molybdenum oxide resources in the ores are recycled.

Description

technical field [0001] The invention relates to the technical field of beneficiation and enrichment of copper oxide and molybdenum symbiotic ores, in particular to a beneficiation method of high oxidation rate copper and molybdenum symbiotic ores. Background technique [0002] my country's copper and molybdenum resources are very rich. By the end of 2014, the copper ore resources reached 91.11 million tons, and the molybdenum resources reserves reached 28.26 million tons, which are my country's dominant mineral resources. The development and utilization of mineral resources in my country usually follows the principle of getting rich first and then poor, and first easy and then difficult. With the rapid development of modern industry, the limited resources of easy-to-select copper sulfide and molybdenum ore have been gradually exhausted, and the remaining copper and molybdenum ore are mostly It is an ore resource with a high oxidation rate that is difficult to enrich. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/014B03D101/02B03D103/04
CPCB03B7/00B03D1/014B03D2201/02B03D2203/04
Inventor 毛益林杨进忠陈晓青严伟平王秀芬
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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