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Method for the floatation of cuprum, plumbi, zincium ore concentrate from tailings for extracting gold

A technology for zinc concentrate and tailings, applied in zinc concentrate, gold smelting and chemical industry flotation copper and lead fields, can solve the problems of wasting resources, affecting the economic value of enterprises, inconvenience of smelters, etc., to improve economic benefits, Improve the effect of comprehensive utilization and reduce the effect of environmental pollution

Inactive Publication Date: 2008-05-14
SHANDONG GUODA GOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the gold smelting industry, the direct cyanidation gold extraction process technology is generally adopted. For the sulfide ore-type gold extraction tailings, the copper, lead, and zinc contents are mostly between 0.3% and 0.6%. , Due to economic and technical problems, valuable elements such as copper, lead, and zinc were generally no longer recycled, wasting resources
In recent years, in order to improve the resource utilization level of sulfide-type gold concentrate and to recover iron concentrate resources from sulfuric acid slag, some enterprises started from improving the grade of pyrite and developed a method of extracting gold from tailings. The method of flotation pyrite, the first step of this method is to remove the interfering factors such as copper, lead, zinc, etc. If it is not separated and sold as a mixed ore, it will not only bring inconvenience to the relevant smelters, even waste resources, but also affect the economic value of the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for flotation copper, lead, zinc concentrate from gold extraction tailings, comprising the following steps

[0025] Mixed concentrate of copper, lead and zinc in one step: add water to the cyanidation gold extraction tailings to adjust the pulp concentration to 35%, use sulfuric acid to adjust the pulp acidity to PH=7.0, add butyl xanthate collector at 120g / t In the flotation machine, closed-circuit flotation is carried out, and copper, lead, zinc, etc. are enriched through primary roughing, secondary closed-circuit sweeping, and secondary closed-circuit selection to obtain copper, lead, zinc mixed concentrate and sulfur-containing Tailings and sulfur-containing tailings are treated separately.

[0026] Two-step ore washing and drug removal: add 2kg / t Na 2 S and 2kg / t activated carbon, after grinding for 30 minutes, filter to obtain a filter cake; the purpose of ore washing is to remove the flotation agent in the mixing process.

[0027] Three-step slurry adj...

Embodiment 2

[0036] A method for flotation copper, lead, zinc concentrate from gold extraction tailings, comprising the following steps

[0037] One-step mixed selection to obtain mixed concentrate of copper, lead and zinc: add water to the cyanidation gold extraction tailings to adjust the pulp concentration to 30%,

[0038] Use sulfuric acid to adjust the pulp acidity to PH=6.5, add butyl xanthate collector at 110g / t to the flotation machine for closed-circuit flotation, and go through primary roughing, secondary closed-circuit sweeping, and secondary closed-circuit selection , copper, lead, zinc, etc. are enriched, and copper, lead, zinc mixed concentrate and sulfur-containing tailings are obtained, and the sulfur-containing tailings are processed separately.

[0039] Two-step ore washing and drug removal: Add 2.2kg / t Na 2 S and 2.2kg / t activated carbon, after grinding for 40 minutes, filter to obtain a filter cake; the purpose of ore washing is to remove the flotation agent in the mix...

Embodiment 3

[0049] A method for flotation of copper, lead and zinc concentrates from gold extraction tailings, comprising the following steps to obtain mixed concentrates of copper, lead and zinc in one step: adding water to the cyanidation gold extraction tailings to adjust the pulp concentration to 33%,

[0050] Use sulfuric acid to adjust the pulp acidity to PH=6.0, add butyl xanthate collector at 80g / t to the flotation machine for closed-circuit flotation, and go through primary roughing, secondary closed-circuit sweeping, and secondary closed-circuit selection , copper, lead, zinc, etc. are enriched, and copper, lead, zinc mixed concentrate and sulfur-containing tailings are obtained, and the sulfur-containing tailings are processed separately.

[0051] Two-step ore washing and drug removal: Add 1.8kg / t Na 2 S and 1.8kg / t activated carbon, after grinding for 20 minutes, filter to obtain a filter cake; the purpose of ore washing is to remove the flotation agent in the mixing process. ...

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PUM

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Abstract

The invention relates to a method for extracting copper, lead and zinc concentrates through flotation from tailings from gold extraction of direct cyanidation, belonging to the technical field of methods for extracting copper, lead and zinc concentrates through flotation in industries of gold smelting and chemical engineering. The invention is applicable to tailings from gold extraction of sulfide ores, which is characterized in that: copper, lead and zinc in the tailings from gold extraction are blended adopting the floatation technology; the mixed concentrates of copper, lead and zinc as well as gangue containing sulfur are obtained, and copper concentrate, lead concentrate and zinc concentrate are obtained after separating the mixed concentrates of copper, lead and zinc through floatation. The invention has the advantages of improved integrated resources utilization, reduced environmental pollution and improved economic benefit of the enterprise.

Description

technical field [0001] The invention relates to a method for flotation of copper, lead and zinc concentrates from gold extraction tailings by a direct cyanidation method, and belongs to the technical field of flotation methods for copper, lead and zinc concentrates in gold smelting and chemical industries. Background technique [0002] In the gold smelting industry, the direct cyanidation gold extraction process technology is generally adopted. For the sulfide ore-type gold extraction tailings, the copper, lead, and zinc contents are mostly between 0.3% and 0.6%. However, due to economic and technical problems, valuable elements such as copper, lead, and zinc were generally not recycled before, which wasted resources. In recent years, in order to improve the resource utilization level of sulfide-type gold concentrate and to recover iron concentrate resources from sulfuric acid slag, some enterprises started from improving the grade of pyrite and developed a method of extract...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/004B03D1/012B03B1/00B03D101/02B03D103/04
Inventor 徐永祥刘占林王其亮朱德兵路玉国
Owner SHANDONG GUODA GOLD
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