New efficient separation process of low-grade copper nickel sulfide ore

A sulfide ore, low-grade technology, which is applied in the field of new high-efficiency separation of low-grade copper-nickel sulfide ore, can solve the problem that the recovery rate of useful minerals is not ideal, and achieve a simplified flotation reagent system and nickel recovery rate. The effect of improving and saving production costs
CN102205266AInactive Publication Date: 2011-10-05NORTHEASTERN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHEASTERN UNIV
Publication Date
2011-10-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of ore separation, in particular to a new efficient separation process of low-grade copper nickel sulfide ore. The process comprises the following steps of: grinding the low-grade copper nickel sulfide ore, and performing magnetic separation and pre-enrichment; performing ore grinding flotation on the magnetic separation ore concentrate after the magnetic separation and the pre-enrichment, and adding 25 to 100g / t of ethyl xanthogenate or butyl xanthogenate or dithiophosphate BA to obtain high-grade copper nickel ore concentrate; grading the magnetic separation tailings after the magnetic separation and the pre-enrichment, and performing ore grinding flotation on the coarse product after grading, and adding 25 to 100g / t of ethyl xanthogenate or butyl xanthogenate or dithiophosphate BA to obtain a qualified ore concentrate product; and performing ore grinding flotation on the fine product after grading, adding 25 to 100g / t of ethyl xanthogenate or butyl xanthogenate or dithiophosphate BA, and adding a hyper-dispersant to obtain a qualified ore concentrate product, wherein the nickel grade of the obtained qualified ore concentrate product is 5 to 10 percent.
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Description

technical field

[0001] The invention relates to the technical field of ore separation, in particular to a new high-efficiency separation process for low-grade copper-nickel sulfide ore. Background technique

[0002] The beneficiation of low-grade copper-nickel sulfide ore is a major technical problem in the world at present, and the research on the separation of this type of ore has not stopped at home and abroad. Electrokinetic potential tests show that under alkaline conditions, the surface of pentlandite is negatively charged, while the surface of serpentine gangue minerals is positively charged, and the positively charged gangue fine mud adheres to the negatively charged The pentlandite surface thus seriously affects the flotation of nickel minerals. Surface micro-imaging technology shows that there are Mg and Si components on the surface of nickel minerals and copper minerals, which confirms that fine mud adheres to the surface of nickel-copper minerals. Serpentine as...

Claims

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