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Method for recycling multiple elements of liquid after cyanided tailing flotation

A cyanide tailings, multi-element technology, applied in sulfur concentrate waste liquid treatment, gold smelting and cyanide tailings flotation lead, copper concentrate fields, can solve problems such as pollution, improve economic benefits and improve efficiency , the effect of reducing pollution

Active Publication Date: 2012-11-21
SHANDONG GUODA GOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, in the gold smelting industry, flotation technology has been used to obtain lead concentrate, copper concentrate, and sulfur concentrate from the tailings of direct cyanidation gold extraction, so as to realize the comprehensive recovery of lead, copper, and sulfur in minerals, among which flotation lead concentrate The contents of gold and silver in the lead-selected liquid obtained during mining are 0.2-0.5g / m3 and 10.0-20.0g / m3 respectively; the contents of gold, silver and copper in the copper-selected liquid obtained during flotation of copper concentrate are 0.1-0.2g / m3, 0.5-0.8g / m3, 0.4-0.6g / l; the content of gold and silver in the sulfur-selected liquid obtained during flotation of sulfur concentrate is 0.05-0.10g / m3, 0.3-0.5g / m3, due to discharge The amount is large, so the value is high. In order to reduce or even avoid the waste of resources and the pollution of the surrounding environment, it is very necessary and urgent to comprehensively recover gold, silver and copper in each flotation system liquid, but in this field , there is currently no solution to this problem

Method used

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  • Method for recycling multiple elements of liquid after cyanided tailing flotation
  • Method for recycling multiple elements of liquid after cyanided tailing flotation
  • Method for recycling multiple elements of liquid after cyanided tailing flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Add water to the cyanidation gold extraction tailings to make it into a pulp, adjust the total mass of solute in the pulp to account for 30% of the total mass of the pulp, add lime to adjust the pH of the pulp to 9.5, use ethylsulfide as a collector, and weigh 80g / t is added to the flotation machine for closed-circuit flotation. After primary roughing, secondary closed-circuit sweeping, and secondary closed-circuit selection, lead is enriched, and lead concentrate and lead tailings are obtained through pressure filtration and dehydration. The lead-separated liquid, the lead-separated liquid and the lead-separated tailings are treated separately;

[0023] 2) Filter the lead-selected liquid to remove suspended minerals and insoluble particles in the lead-selected liquid, and obtain precipitates through the zinc powder replacement process (in the precipitates, the gold content is greater than 1% of the total mass of the precipitates %, the silver content is greater tha...

Embodiment 2

[0031] 1) Add water to the cyanidation gold extraction tailings to make it into a pulp, adjust the total mass of solute in the pulp to account for 33% of the total mass of the pulp, add lime to adjust the pH of the pulp to 10, and use isopentyl xanthate as a collector, Add 90g / t into the flotation machine for closed-circuit flotation. After first-level roughing, second-level closed-circuit sweeping, and second-level closed-circuit selection, lead is enriched, and lead concentrate and lead tailings are obtained through pressure filtration and dehydration. Ore and lead-separated liquid, lead-separated liquid and lead-separated tailings are treated separately;

[0032]2) Filter the lead-selected liquid to remove suspended minerals and insoluble particles in the lead-selected liquid, and obtain precipitates through the zinc powder replacement process (in the precipitates, the gold content is greater than 1% of the total mass of the precipitates %, the silver content is greater tha...

Embodiment 3

[0040] 1) Add water to the cyanidation gold extraction tailings to make it into a pulp, adjust the total mass of solute in the pulp to account for 35% of the total mass of the pulp, add lime to adjust the pH of the pulp to 11.5, and use ethyl disulfide as a collector, according to 120g / t is added to the flotation machine for closed-circuit flotation. After primary roughing, secondary closed-circuit sweeping, and secondary closed-circuit selection, lead is enriched, and lead concentrate and lead tailings are obtained through pressure filtration and dehydration. The lead-separated liquid, the lead-separated liquid and the lead-separated tailings are treated separately;

[0041] 2) Filter the lead-selected liquid to remove suspended minerals and insoluble particles in the lead-selected liquid, and obtain precipitates through the zinc powder replacement process (in the precipitates, the gold content is greater than 1% of the total mass of the precipitates %, the silver content is...

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Abstract

The invention relates to a method for recycling multiple elements of liquid after cyanided tailing flotation, belonging to the technical field of gold smelting, cyanided tailing flotation of lead and copper concentrate, and waste water treatment of sulfur concentrate. The method comprises the following steps: obtaining lead concentrate through flotation; comprehensively recycling gold and silver from liquid after lead flotation; obtaining copper concentrate through flotation; comprehensively recycling gold, silver and copper from liquid after copper flotation; obtaining sulfur concentrate through flotation; recycling gold and silver through gold-loaded activated carbon desorption electrodeposition; and the like. By the method, the comprehensive utilization efficiency of resources is improved, closed loop recycle of the liquid in a flotation system is achieved, zero discharge of wastewater is achieved, pollution to the surrounding environment is reduced, and ultimately the economic efficiency of an enterprise is improved.

Description

technical field [0001] The invention relates to a method for recovering and recycling multiple elements of liquid after cyanide tailing flotation, and belongs to the technical field of gold smelting and cyanide tailing flotation lead, copper concentrate, and sulfur concentrate waste liquid treatment. Background technique [0002] In recent years, in the gold smelting industry, flotation technology has been used to obtain lead concentrate, copper concentrate, and sulfur concentrate from the tailings of direct cyanidation gold extraction, so as to realize the comprehensive recovery of lead, copper, and sulfur in minerals, among which flotation lead concentrate The contents of gold and silver in the lead-selected liquid obtained during mining are 0.2-0.5g / m3 and 10.0-20.0g / m3 respectively; the contents of gold, silver and copper in the copper-selected liquid obtained during flotation of copper concentrate are 0.1-0.2g / m3, 0.5-0.8g / m3, 0.4-0.6g / l; the content of gold and silver...

Claims

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Application Information

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IPC IPC(8): B03B9/06
Inventor 徐永祥吕寿明王立新梁志伟
Owner SHANDONG GUODA GOLD
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