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A method for removing arsenic from copper concentrate

A technology for copper concentrate and copper concentrate, which is applied to the application of arsenic removal from copper concentrate and the field of arsenic removal from copper concentrate, can solve problems such as the inability to use methods or chemicals for reference, and achieve easy control of process parameters, short process flow and small investment. Effect

Active Publication Date: 2020-05-01
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the methods or medicaments of these two patents cannot be used for reference.

Method used

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  • A method for removing arsenic from copper concentrate
  • A method for removing arsenic from copper concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A copper mine is mainly composed of copper sulfide ore. The flotation process is used to recover copper, and a mercapto collector is used. Some copper exists in arsenic-containing minerals. The copper concentrate obtained by flotation contains 22.08% copper and 0.95% arsenic. %.

[0029] With the method of the present invention, carry out successively by following processing step and condition:

[0030] The first step of activated carbon adsorption and drug removal: firstly dehydrate the copper concentrate pulp obtained from the above flotation until the mass percentage concentration of the pulp is 60%, and send it to the tank with mechanical agitation, then add 500g of activated carbon powder per cubic meter of the pulp, under the condition of mechanical agitation Carry out adsorption and drug removal for 30min under the following conditions;

[0031] The second step of washing and drug removal: the activated carbon adsorption and drug removal pulp obtained in the fir...

Embodiment 2

[0034] A copper ore is mainly composed of copper sulfide ore. The flotation process is used to recover copper, and a mercapto collector is used. Some copper exists in arsenic-containing minerals. The copper concentrate obtained by flotation contains 24.22% copper and 1.03% arsenic. %.

[0035] With the method of the present invention, carry out successively by following processing step and condition:

[0036] The first step of activated carbon adsorption and drug removal: first dehydrate the copper concentrate pulp obtained from the above flotation until the mass percentage concentration of the pulp is 50%, and then send it to the tank with mechanical agitation, and then add 300g of activated carbon powder per square of pulp, and stir it mechanically Carry out adsorption and drug removal under conditions for 40 minutes;

[0037] The second step of washing and drug removal: the activated carbon adsorption and drug removal pulp obtained in the first step is diluted with water u...

Embodiment 3

[0040] A copper ore is mainly composed of copper sulfide ore. The flotation process is used to recover copper, and a mercapto collector is used. Some copper exists in arsenic-containing minerals. The copper concentrate obtained by flotation contains 22.76% copper and 1.26% arsenic. %.

[0041] With the method of the present invention, carry out successively by following processing step and condition:

[0042] The first step of activated carbon adsorption and drug removal: first dehydrate the copper concentrate pulp obtained from the above flotation to a mass percentage concentration of the pulp of 58%, and then send it to a tank with mechanical agitation, and then add 200g of activated carbon powder per square of pulp, and stir it mechanically Carry out adsorption and drug removal under conditions for 60 minutes;

[0043]The second step of washing and drug removal: the activated carbon adsorption and drug removal pulp obtained in the first step is diluted with water to a pulp...

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Abstract

The invention relates to a method for removing arsenic of a copper concentrate. The method is conducted according to the following steps and conditions that activated carbon adsorption and agent removal are conducted, copper concentrate pulp obtained through conventional flotation is subjected to water removal, activated carbon powder is added, and stirring, adsorbing and agent removing are conducted; washing and agent removing are conducted, and after water is added in the activated carbon adsorption and agent removal pulp to be diluted and stirred, the product is sent into a thickener to besubjected to thickening settlement; flotation and arsenic removal are conducted, the washing and agent removal pulp is sent to a flotation tank, first-time flotation is conducted under the situation that no reagents are added, and a first concentrate and first tailings are obtained; then, lime and ammonium dibutyl are added in the first tailings, stirring, flotation and arsenic removal are conducted, then, second-time flotation is conducted, a second concentrate and second tailings are obtained, the second flotation concentrate is the low-arsenic copper concentrate obtained after arsenic removal, the high-arsenic copper concentrate is obtained after mixing of the first concentrate and the second tailings, finally, the obtained low-arsenic copper concentrate product and the high-arsenic copper concentrate product are additionally treated, the grade of copper in the copper concentrate reaches 24%-27%, the copper recycling rate reaches up to 88%-92%, and the grade of arsenic in the copperconcentrate can be reduced to be below 0.3%. The method has the beneficial effects that technology parameters are easy to control, implementation is high, investment is little, energy consumption islow, the technology process is short, and the method is friendly to the environment.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for removing arsenic from copper concentrate, which is suitable for the application of removing arsenic from copper concentrate. Background technique [0002] As a metal related to the national economy and people's livelihood, copper is widely used in many fields such as industrial and agricultural production. Copper minerals in my country are mainly copper sulfide minerals. Among the proven reserves, copper sulfide ore accounts for 87%, copper oxide ore accounts for 10%, and mixed ore copper accounts for 3%. Copper ore, chalcocite, bornite, tetrahedrite and copper blue, etc. Some copper in copper sulfide ore exists in arsenic-containing minerals. When mercapto collectors are used to float copper sulfide minerals, this part of copper is also enriched in copper concentrate products, resulting in arsenic in copper concentrate products. If the content is greater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/018B03D103/04
CPCB03B7/00B03D1/018B03D2203/04
Inventor 邓莉莉黄怀国沈贤德贾超峰李洪文谭希发丘财庆
Owner ZIJIN MINING GROUP
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