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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

Inactive Publication Date: 2011-10-05
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This process method makes the recovery rate of useful minerals and the grade of concentrate obtained by separation unsatisfactory.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The low-grade nickel sulfide ore used in this example is Jinchuan Low-grade nickel sulfide ore in the mining area. Through spectral and multi-element analysis, the ore has a nickel grade of 0.4%, a copper grade of 0.25%, an iron grade of 10%, a sulfur grade of 2%, and a magnesium oxide grade of 32%. It is a low-grade high-magnesium oxide copper-nickel sulfide ore. Through the analysis of optical microscope, scanning electron microscope and energy spectrometer, the copper-nickel minerals in the ore are mainly violazite, chalcopyrite, black copper ore, a small amount of nickel-copper microcrystalline aggregates, etc. At the same time, it contains about 9% iron oxides such as magnetite, and the gangue minerals are silicate minerals such as serpentine, dolomite and chlorite.

[0022] Jinchuan The low-grade copper-nickel sulfide ore in the mining area is subjected to a first-stage rod grinding, and the grinding fineness is -0.074mm, accounting for 10%. The magnetic separ...

Embodiment 2

[0026] The low-grade nickel sulfide ore used in this implementation example is Jinchuan Low-grade nickel sulfide ore in the mining area. Through spectrum and multi-element analysis, the ore has a nickel grade of 0.5%, a copper grade of 0.30%, an iron grade of 10%, a sulfur grade of 2.3%, and a magnesium oxide grade of 30%. It is a low-grade high-magnesium oxide copper-nickel sulfide ore. Through the analysis of optical microscope, scanning electron microscope and energy spectrometer, the copper-nickel minerals in the ore are mainly purple sulfur nickelite (pentlandite), chalcopyrite, black copper ore, a small amount of nickel-copper microcrystalline aggregates, etc. At the same time, it contains about 10% iron oxides such as magnetite, and the gangue minerals are silicate minerals such as serpentine, dolomite and chlorite.

[0027] Jinchuan The low-grade copper-nickel sulfide ore in the mining area is subjected to a first-stage rod grinding, and the grinding fineness is -0...

Embodiment 3

[0031] The low-grade nickel sulfide ore used in this implementation example is Jinchuan Low-grade nickel sulfide ore in the mining area. Through spectrum and multi-element analysis, the ore has a nickel grade of 0.61%, a copper grade of 0.38%, an iron grade of 10%, a sulfur grade of 2.4%, and a magnesium oxide grade of 29%. It is a low-grade high-magnesium oxide copper-nickel sulfide ore. Through the analysis of optical microscope, scanning electron microscope and energy spectrometer, the copper-nickel minerals in the ore are mainly purple sulfur nickelite (pentlandite), chalcopyrite, black copper ore, a small amount of nickel-copper microcrystalline aggregates, etc. At the same time, it contains about 10% iron oxides such as magnetite, and the gangue minerals are silicate minerals such as serpentine, dolomite and chlorite.

[0032] Jinchuan The low-grade copper-nickel sulfide ore in the mining area is subjected to a first-stage rod grinding, and the grinding fineness is -...

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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.

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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Application Information

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IPC IPC(8): B03B7/00
Inventor 韩跃新程少逸袁致涛张柳一赵礼兵张秀品高鹏赵毕文
Owner NORTHEASTERN UNIV
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