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Application of metal ion brine in flotation separation of extremely difficult-to-separate copper sulphide gold ore

A technology of metal ions and divalent metal ions, applied in flotation, solid separation and other directions, can solve the problems of large dosage, complex composition, poor copper-gold sulfide effect, etc., and achieves less pollution, less lime dosage, and synergistic effect. obvious effect

Inactive Publication Date: 2021-02-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the variety of agents and the large dosage, and the variety of gangue minerals in the ore and the complex composition, the method of pre-deliming or adding clay inhibitors is not effective for the extremely difficult to slag copper-gold sulfide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Metallic minerals in a copper sulfide gold deposit in Western Australia include gold, chalcopyrite, and pyrite, and gangue minerals include montmorillonite, quartz, mica, and albite. When the raw ore contains 0.43% Cu, 1.13g / t Au and 11% montmorillonite content, when the raw ore crushing fineness is -2mm accounting for 99%, the grinding fineness obtained by grinding is -106μm accounting for 80% Above, the slurry is adjusted with brine, the concentration of divalent calcium and magnesium ions in the brine is 0.01mol / L, and the viscosity of the slurry is controlled to 10mPa·s. After two rough separations, the reagent system used in flotation is: roughing one adding and catching Collecting agent 40g / t, foaming agent 20g / t, roughing two adding collector 20g / t, foaming agent 10g / t, the two roughing foam products are combined to obtain copper and gold concentrate. Using the above process and reagent system, the copper sulfide gold ore, which was originally difficult to be separated ...

Embodiment 2

[0028]Compared with Example 1, the only difference is that the concentration of divalent calcium and magnesium ions in the brine is controlled to 0.1mol / L, the viscosity of the slurry is controlled to 8.4mPa·s, the dosage of the agent remains unchanged, and the grade of copper concentrate is 12.2. %, the recovery rate is 89%, the gold content in the concentrate is 12g / t, and the beneficiation index is 81%.

Embodiment 3

[0030]Compared with Example 1, the only difference is that the concentration of divalent calcium and magnesium ions in the brine is controlled to 1.0mol / L, the viscosity of the slurry is controlled to 8.3mPa·s, the dosage of the agent is unchanged, and the grade of copper concentrate is 8.7. %, the recovery rate is 87%, the concentrate contains 9g / t of gold, and the beneficiation index is 82%.

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PUM

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Abstract

The invention discloses an application of metal ion brine in flotation separation of extremely difficult-to-separate copper sulphide gold ore. In the flotation process of the extremely difficult-to-separate copper sulphide gold ore without desliming pretreatment, the argillization effect of fine-grained gangue minerals is inhibited by adopting divalent metal ion brine, so that the extremely difficult-to-separate copper sulphide gold ore is efficiently separated; and the effect of reducing the dosage of other flotation reagents is achieved.

Description

Technical field[0001]The invention relates to a flotation separation method for extremely difficult to select copper sulfide gold ore, in particular to a method for suppressing siltification of gangue minerals during the flotation and separation process of copper sulfide gold ore by using divalent metal ion brine, and to prevent the extremely difficult to select copper sulfide The method of adjusting the slurry of gold mine as a whole to improve the recovery rate and grade of copper and gold mine belongs to the field of flotation separation technology.Background technique[0002]With the development of society and economy, mineral resources are being exploited in large quantities, and rich ore and easy-to-treat high-quality mineral resources are declining. How to efficiently use low-grade, complex ores with fine embedded granularity has become a challenge facing the mineral processing industry. Due to natural weathering or alteration, or excessive crushing during crushing and grinding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/018B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 王艳红顾帼华宋斯宇
Owner CENT SOUTH UNIV