Flotation process for comprehensively recovering gold and sulfur from copper tailings

A copper tailings and gold recovery technology, which is applied in the field of flotation technology, can solve problems such as the comprehensive recovery of residual gold and copper that have not been considered, and achieve the effects of improving the flotation environment, improving the comprehensive utilization rate of resources, and being easy to decompose

Active Publication Date: 2018-03-13
ZIJIN MINING GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, some people obtain high-grade sulfur concentrate through the flotation process. Most of them use stage grinding, adding sulfuric acid or adding inorganic salts such as copper sulfate to activate sulfur separation, so that while

Method used

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  • Flotation process for comprehensively recovering gold and sulfur from copper tailings
  • Flotation process for comprehensively recovering gold and sulfur from copper tailings

Examples

Experimental program
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Effect test

Embodiment 1

[0037]According to the dry weight of each ton of raw ore, acidic waste water a from the pit is sequentially added to the copper tailings 1 to adjust the pH to 6, the amount of collector b is 15 g / t, and the amount of foaming agent MIBC c is 10 g / t; Separation Ⅰ2, to obtain roughing Ⅰ concentrate 4 and roughing Ⅰ tailings; roughing Ⅰ tailings add 5 g / t of collector ethyl disulfide nitrogen b, foaming agent MIBC c 5 g / t, and carry out roughing Ⅱ 3, Obtain rougher II concentrate 5 and rougher II tailings 6; rougher I concentrate 4 and rougher II concentrate 5 are combined, and at the same time add the regulator ammonium sulfate d with an amount of 200g / t, enter the ball mill for regrinding, and grind The fineness is -0.074mm, accounting for 85.0%; after regrinding, the amount of dispersion inhibitor carboxymethyl cellulose e is 50g / t+the amount of water glass f is 50g / t, and the amount of foaming agent MIBC c is 3g / t. Ⅰ11, get concentrated I concentrate and tailings 14, concentra...

Embodiment 2

[0039] According to the dry weight of each ton of raw ore, acidic waste water a from the pit is added to the copper tailings 1 to adjust the pH to 7, the amount of the collector ethyl disulfide nitrogen b is 20 g / t, and the foaming agent MIBC c is used in an amount of 20 g / t; Separation Ⅰ2, obtain roughing Ⅰ concentrate 4 and roughing Ⅰ tailings; roughing Ⅰ tailings are added with the amount of 10g / t of collector ethyl disulfide nitrogen b, and the amount of foaming agent MIBC c 10g / t, and carry out roughing Ⅱ, Obtain rougher II concentrate 5 and rougher II tailings 6; rougher I concentrate 4 and rougher II concentrate 5 are combined, and at the same time add the regulator ammonium sulfate d with an amount of 300g / t, enter the ball mill for regrinding, and grind The fineness is -0.074mm, accounting for 90.0%; after regrinding, the amount of dispersion inhibitor carboxymethyl cellulose e is 100g / t, the amount of water glass f is 100g / t, and the amount of foaming agent MIBC c is ...

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Abstract

The invention relates to a flotation process for comprehensively recovering gold and sulfur from copper tailings. According to the floatation process, cave acid waste water, a capture agent and an alcohol foaming agent are added to the tailings from copper processing, recovery of objective minerals, copper and associated gold and silver is intensified, regrinding is conducted after ammonium sulfate is added, the objective minerals are cleaned and dissociated, sulfur concentrates are obtained through two-time concentration and serial return of middling products, the sulfur concentrates are subjected to size mixing through sulfuric acid and then subjected to flotation, and super-pure sulfur concentrates (sulfuric acid residues can be directly used as raw materials for iron-making) and gold-copper containing common sulfur concentrates (the sulfuric acid residues can comprehensively recover gold-copper). The flotation process has the advantages that the concentration effect is good, recovery of subsequent operation is facilitated, the sulfur concentrates are high in grade and good in purity, and the resource additive value of the sulfur concentrates can be improved, and the flotation process is suitable for being applied to copper mineral dressing plants for obtaining the super-pure sulfur concentrates with sulfur-copper tailings as raw materials and comprehensively recovering associated gold elements.

Description

technical field [0001] The invention relates to a flotation process for comprehensively recovering gold and sulfur from copper tailings, which is suitable for use in copper beneficiation plants that use sulfur-containing copper tailings as raw materials to obtain ultra-pure sulfur concentrates and comprehensively recover associated gold elements. Background technique [0002] Copper ore tailings have the characteristics of large quantity, fine particle size, various types, and complex composition. They generally have the potential characteristics of high value-added applications such as pyrite, associated gold and silver, and copper minerals. However, due to technical, economic benefits, and environmental protection requirements Many copper beneficiation plants often do not recover sulfur after recovering copper minerals, but directly discard it as tailings or concentrate it after initial enrichment. On the one hand, it affects the development and utilization of mineral resou...

Claims

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Application Information

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IPC IPC(8): B03D1/001B03D1/02B03D1/08B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/001B03D1/02B03D1/08B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 甘永刚鲁军李广闫军宁肖琴岳丽琴巫銮东廖德华
Owner ZIJIN MINING GROUP
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