A method for comprehensive recovery and recycling of copper extraction residual liquid

A technology of copper extraction residual liquid and filtrate, which is applied in the field of comprehensive recovery and recycling of copper extraction residual liquid, can solve problems such as waste of resources, no recycling, environmental impact, etc., and achieve the effect of increasing economic benefits of enterprises and improving resource utilization

Active Publication Date: 2016-01-06
SHANDONG GUODA GOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the liquid after copper extraction is usually directly treated by lime neutralization method, and the neutralized liquid is filtered and returned to the production system, and the neutralized slag is piled up in the tailings pond after pressure filtration, in which there are no valuable metals such as zinc and copper. Recycling not only causes waste of resources, but also has a great impact on the environment

Method used

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  • A method for comprehensive recovery and recycling of copper extraction residual liquid
  • A method for comprehensive recovery and recycling of copper extraction residual liquid
  • A method for comprehensive recovery and recycling of copper extraction residual liquid

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The hot calcined sand obtained after the zinc-containing copper-gold concentrate is roasted is transported to the acid leaching tank for acid leaching through the cooling drum, and the acid leaching temperature is controlled at 80°C, and the acid leaching is carried out for 5 hours to obtain the acid leaching pulp; the acid leaching tank Add sulfuric acid with a concentration of 25g / l; the acid leaching pulp is separated from liquid to solid by a thickener and a vacuum filter to obtain zinc-copper acid leach solution and gold and silver-containing solid materials; gold and silver-containing solid materials are fed into the cyanidation process ; The zinc-containing copper acid leaching liquid is extracted through the extraction device and the electrowinning device to extract the cathode copper, and the liquid after the copper extraction is filtered through the vacuum filter device to filter oil, fine particle dust and other suspended matter, and the filtrate is pumped from...

Embodiment 2

[0044] The hot calcined sand obtained after the zinc-containing copper-gold concentrate is roasted is transported to the acid leaching tank for acid leaching through the cooling drum, and the acid leaching temperature is controlled at 85°C, and the acid leaching is carried out for 6 hours to obtain the acid leaching pulp; the acid leaching tank Add sulfuric acid with a concentration of 30g / l; the acid leaching pulp is separated from liquid to solid by a thickener and a vacuum filter to obtain zinc-copper acid leaching solution and gold and silver-containing solid materials; gold and silver-containing solid materials are fed into the cyanidation process ; The zinc-containing copper acid leaching liquid is extracted through the extraction device and the electrowinning device to extract the cathode copper, and the liquid after the copper extraction is filtered through the vacuum filter device to filter oil, fine particle dust and other suspended matter, and the filtrate is pumped f...

Embodiment 3

[0050] The hot calcined sand obtained after the zinc-containing copper-gold concentrate is roasted is transported to the acid leaching tank for acid leaching through the cooling drum, and the acid leaching temperature is controlled at 90°C, and the acid leaching is carried out for 7 hours to obtain the acid leaching pulp; the acid leaching tank Add sulfuric acid with a concentration of 40g / l; the acid leaching pulp is separated from liquid to solid by a thickener and a vacuum filter to obtain zinc-copper acid leaching solution and gold and silver-containing solid materials; The zinc-containing copper acid leaching solution extracts cathode copper through an extraction device and an electrowinning device, and after extracting and extracting copper, the liquid is filtered through a vacuum filter device for suspended solids such as oil stains and fine particle dust, and the filtrate is pumped from the primary ion exchange membrane ( The separators are inserted between the special ...

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PUM

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Abstract

The invention relates to a copper extraction raffinate comprehensive recycling and cyclic utilization method comprising the following steps: roasting a zinc-copper-gold containing concentrate, carrying out acid leaching treatment, and thus obtaining an acid leached ore pulp; carrying out liquid-solid separation on the acid leached ore pulp, to obtain a zinc-copper containing acid leached liquid and a gold-silver containing solid material; extracting a cathode copper from the zinc-copper containing acid leached liquid through an extraction device and an electrodeposition device, filtering the copper extraction raffinate, and separating the filtrate by an ion exchange membrane to obtain a dialysate and an impurity-removing acid-containing liquid; pumping the dialysate into a stirring tank by a pump, adding lime, and producing a slurry; filtering the slurry to obtain a zinc-containing filtrate and a precipitation residue; conveying the zinc-containing filtrate to a zinc precipitation stirring tank, and simultaneously adding a sodium sulfide solution and an ammonium bicarbonate solution into the stirring tank until zinc is precipitated out; and carrying out press filtration. The method is simple and easy to implement, obtains the zinc slag with the zinc content of 43.2%-45.8%, fully recycles gold, silver, copper and sulfur valuable metals, also fully recycles the valuable metal zinc, effectively utilizes the gold-containing multi-element gold concentrate resource, turns waste into treasure, and further, improves the resource utilization rate and increases enterprise economic benefits.

Description

technical field [0001] The invention relates to a method for comprehensive recovery and recycling of copper extraction residual liquid, which belongs to the production process technical field of comprehensive recovery of zinc and copper and recycling of acidic waste water in metallurgical chemical industry after roasting + acid leaching extraction for copper extraction. Background technique [0002] At present, a zinc-containing copper-gold concentrate adopts a roasting + acid leaching process. The acid leaching solution contains metals such as zinc and copper, and the cathode copper is produced by the extraction electrowinning method, and the copper extraction solution is the copper extraction solution. Usually The zinc content is 3000-8000 mg / l, the copper content is 60-160 mg / l and iron, calcium, sodium and other metal ions. Because the copper extraction raffinate is acidic, with a pH of 1-2, and because it contains more impurities, the copper extraction raffinate has not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/20C22B15/00C22B19/00
CPCY02P10/20
Inventor 徐永祥吕寿明梁志伟
Owner SHANDONG GUODA GOLD
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