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Floatation separation method for copper pyrites and iron pyrites

A separation method, pyrite technology, applied in flotation, solid separation, etc., to achieve the effects of low dosage, separation, and low cost of chemicals

Active Publication Date: 2016-03-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For existing lime process and cyanide process process the defect that chalcopyrite and pyrite mixed mineral exist, the purpose of the present invention is to provide a kind of can effectively realize chalcopyrite and pyrite in the neutral environment without lime. Flotation separation method of ore to obtain copper concentrate with higher copper grade and recovery rate

Method used

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  • Floatation separation method for copper pyrites and iron pyrites
  • Floatation separation method for copper pyrites and iron pyrites
  • Floatation separation method for copper pyrites and iron pyrites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Mineral raw materials

[0029] Take raw ore from a copper mine in Hebei Province, the copper content is 0.619%, and the sulfur content is 3.262%.

[0030] 2. The total dosage of flotation reagents is:

[0031]

[0032] The operation steps and technical conditions are as follows:

[0033] During the flotation process, the ore is added to the grinding machine for grinding until the mineral monomer dissociates. Under the natural pH condition, copper sulfate is added in sequence as an activator for chalcopyrite, and water glass as an inhibitor for other gangue minerals such as quartz. agent, a mixture of sapphire gum and velvet gum as an inhibitor of pyrite, xanthate as a collector and 2 # Oil is used as a foaming agent for roughing operation to obtain copper rough concentrate and copper rough tailings. The roughing tailings are added with butyl xanthate and 2 # The oil is subjected to copper sweeping, and the sweeping times are 1, and the order of sweeping the con...

Embodiment 2

[0042] 1. Mineral raw materials

[0043] Take raw ore from a copper mine in Xinjiang Province, the copper content is 0.592%, and the sulfur content is 4.010%.

[0044] 2. The total dosage of flotation reagents is:

[0045]

[0046] The operation steps and technical conditions are as follows:

[0047] During the flotation process, the ore is added to the grinding machine for grinding until the mineral monomer dissociates. Under the natural pH condition, copper sulfate is added in sequence as an activator for chalcopyrite, and water glass as an inhibitor for other gangue minerals such as quartz. agent, sapphire gum and xanthan gum mixture as pyrite inhibitor, butyl xanthate, black medicine and Z200 mixture as collector and 2 # Oil is used as a foaming agent for roughing operation to obtain copper rough concentrate and copper rough tailings. The roughing tailings are added with butyl xanthate, black medicine, Z200 and 2 # The oil is subjected to copper sweeping, and the swe...

Embodiment 3

[0057] 1. Mineral raw materials

[0058] Take raw ore from a copper mine in Jiangxi Province, the copper content is 0.840%, and the sulfur content is 10.135%.

[0059] 2. The total dosage of flotation reagents is:

[0060]

[0061] The operation steps and technical conditions are as follows:

[0062] During the flotation process, the ore is added to the grinding machine for grinding until the mineral monomer dissociates. Under the natural pH condition, copper sulfate is added in sequence as an activator for chalcopyrite, and water glass as an inhibitor for other gangue minerals such as quartz. agent, sodium hexametaphosphate as pulp dispersant, sapura gum as pyrite inhibitor, butyl xanthate as collector and 2 # Oil is used as a foaming agent for roughing operation to obtain copper rough concentrate and copper rough tailings. The roughing tailings are added with butyl xanthate and 2 # The oil is subjected to copper sweeping, and the sweeping times are 2 times, and the ord...

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Abstract

The invention discloses a floatation separation method for copper pyrites and iron pyrites. According to the method, copper sulfate serves as an activating agent of the copper pyrites, sodium silicate, sodium hexametaphosphate and the like serve as an inhibitor of a gangue mineral and a pulp dispersing agent, sesbania gum serves as an inhibitor of the iron pyrites, Z200 and the like serve as a collecting agent of the copper pyrites, 2# oil serves as a foaming agent, the floatation separation is carried out, and flotation of the iron pyrites can be effectively restrained. Under the neutrality condition, floatation separation of the copper pyrites and the iron pyrites can be effectively achieved, and under the condition that the copper content of fed ore is 0.5%-0.9% and the sulfur content is 3%-11%, the copper concentrate with the copper content of 18%-21% can be obtained after flotation separation, and the recycling rate can reach 77%-85%.

Description

technical field [0001] The invention relates to a flotation separation method for copper sulfide ore, in particular to a flotation separation method for chalcopyrite and pyrite under neutral conditions. Background technique [0002] Traditional copper-sulfur separation and flotation methods: 1. Lime method. A large amount of lime is added to form a high alkalinity pulp environment to inhibit pyrite and realize the separation of copper and sulfur. 2. Cyanide process. Cyanide is an effective inhibitor of chalcopyrite, sphalerite and pyrite. Because of its good suppression ability, it has been widely used in the flotation of polymetallic sulfide ores in the past. [0003] The lime technology is quite mature and the separation effect is good. However, in the medium with high alkalinity, lime has different degrees of inhibition on copper, sulfur, gold, silver and other minerals in the ore, which is not conducive to the further improvement of copper indicators, especially the ...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D101/04B03D101/06
CPCB03D1/018B03D2201/02B03D2201/04B03D2201/06
Inventor 孙伟田孟杰胡岳华王丽陈宇枫
Owner CENT SOUTH UNIV
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