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Method for floating high-sulfur gold-bearing copper ore

A copper ore, high-sulfur technology, used in flotation, solid separation and other directions, can solve the problems of poor selectivity, increased inhibitor consumption, low copper and gold recovery rate, etc., to improve recovery rate, improve mineral surface characteristics, Enhance the effect of selective adsorption

Active Publication Date: 2014-04-02
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of flotation method of high-sulfur gold-containing copper ore, to solve the problem that copper and gold minerals will be suppressed to a certain extent under high alkali conditions in current mineral processing methods, resulting in relatively low copper and gold recovery rates. Low; using xanthate and black medicine as collectors for high-sulfur gold-containing copper ores has strong collecting power and poor selectivity, which aggravates the difficulty of copper-sulfur separation and increases the consumption of inhibitors

Method used

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  • Method for floating high-sulfur gold-bearing copper ore
  • Method for floating high-sulfur gold-bearing copper ore
  • Method for floating high-sulfur gold-bearing copper ore

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The raw ore grades in this example are copper 0.91%, gold 0.29g / t, sulfur 21.50%, and iron 27.69%. Its material composition is: the main metal minerals in the ore are pyrite, pyrrhotite, chalcopyrite, magnetite, galena, sphalerite, and the small and trace minerals are marcasite, bornite, and pyrite. Copper ore, arsenopyrite, blue chalcocite, natural gold, silver-gold ore; gangue minerals include pyroxene, garnet, quartz, calcite, feldspar, chlorite, epidote, etc. The main carrier minerals of gold are copper sulfide minerals and pyrite, followed by pyrrhotite. The results of primary mineral phase analysis show that copper minerals include primary copper minerals and secondary copper minerals, primary copper minerals are the main ones, and copper oxide only accounts for 1 ～ 3%, the beneficiation index of copper is basically not affected by the oxidation of ore, but the content of secondary copper in the ore, grinding fineness, chemical system, etc. will have a significan...

Embodiment 2

[0039] The raw ore grade of this embodiment is copper 0.73%, gold 0.21g / t, sulfur 25.60%, iron 23.51%, and its material composition is the same as that of embodiment 1.

[0040] A kind of flotation method of high-sulfur gold-containing copper ore is made up of the following steps:

[0041] Lime and sodium pyrosulfite are used as slurry pH regulator and pyrite inhibitor, and foaming agent is used as collector and foaming agent of copper sulfide minerals such as chalcopyrite and associated gold, under low alkalinity conditions The separation and flotation of copper, gold and pyrite, the specific process is,

[0042]A. Grinding process: Grind the raw ore at one time until the ore particles smaller than 0.074mm account for 70%, so that the copper sulfide minerals, gold minerals, and pyrites are fully dissociated, and the slurry pH adjuster and Pyrite inhibitor, adding water to adjust the slurry to a weight concentration of 40%, the pH value of the slurry is 7;

[0043] B. The ro...

Embodiment 3

[0048] The raw ore grade of this embodiment is copper 1.22%, gold 0.42g / t, sulfur 26.34%, iron 22.86%, and its material composition is the same as that of embodiment 1.

[0049] A kind of flotation method of high-sulfur gold-containing copper ore is made up of the following steps:

[0050] Lime and sodium pyrosulfite are used as slurry pH regulator and pyrite inhibitor, and foaming agent is used as collector and foaming agent of copper sulfide minerals such as chalcopyrite and associated gold, under low alkalinity conditions The separation and flotation of copper, gold and pyrite, the specific process is,

[0051] A. Grinding process: Grind the raw ore at one time until the ore particles less than 0.074mm account for 80%, so that the copper sulfide minerals, gold minerals, and pyrites are fully dissociated, and the slurry pH regulator and Pyrite inhibitor, add water to adjust the slurry to a weight concentration of 35%, and the pH value of the slurry is 8.5;

[0052] B. The ...

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Abstract

The invention discloses a method for floating high-sulfur gold-bearing copper ore, which aims at solving the problems that the existing beneficiation method is lower in copper and gold recovery rate under high-alkali condition, and problems that xanthate and black powder are adopted as high-sulfur gold-bearing copper ore collecting agents, the collecting power is stronger, the selectivity is poor, the separation difficulty of copper and sulfur can be aggravated and the consumption of inhibitors is increased. The method comprises the steps of by adopting lime and sodium metabisulfite as an ore pulp pH regulator and a pyrite inhibitor, and the mixture of isopropyl xanthogen propionitrile ester, black powder acid and ethyl dithiocarboxyl propionitrile ester according to certain proportion as a collecting foaming agent, carrying out ore grinding, rough concentration, primary scavenging, secondary scavenging, primary concentration, and secondary concentration on a crude ore, thus realizing the high-efficiency recovery on copper and gold in the high-sulfur gold-bearing copper ore. According to the method, through reasonable combination and addition of medicaments, the selective adsorption of the collecting agent on target mineral-copper pyrite and other copper sulfide minerals and gold minerals can be reinforced, and the copper recovery rate and the gold recovery rate can be improved.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a flotation method for high-sulfur gold-containing copper ore. Background technique [0002] Copper is a non-ferrous metal that is very closely related to human beings. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in my country. [0003] Copper ore is mainly divided into two types: copper sulfide ore and copper oxide ore. High-sulfur gold-bearing copper ores, generally copper exists mainly in the form of chalcopyrite, sulfur mainly exists in the form of pyrite, gold mainly exists in the form of natural gold, copper sulfide minerals and pyrite are the main forms of gold carrier minerals. The separation of copper and sulfur is difficult, and the comprehensive recovery of copper and gold is the key to beneficiation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 黄建芬余江鸿王永斌孙科峰戚福军徐飞飞林承伟张红
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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