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Floating process for enriching Cu, Ag, Au, etc from gold sulfide ore cyanizing gold extraction tailing

A gold sulfide and enrichment technology, which is applied in the field of flotation technology, can solve the problems of incomplete recycling and waste of resources, and achieve good promotion and application value, improve comprehensive utilization, and high metal recovery rate.

Inactive Publication Date: 2007-06-27
SHANDONG GUODA GOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the deficiencies such as incomplete recycling and waste of resources in the above-mentioned prior art, and to provide a simple, economical and practical method with high resource utilization rate from gold sulfide ore cyanide extraction gold tailings The flotation process of enriching copper, gold, silver, etc., making full use of gold resources, turning waste into treasure, improving the recovery rate of various valuable elements in the gold smelting process, improving resource utilization and enterprise economic benefits

Method used

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  • Floating process for enriching Cu, Ag, Au, etc from gold sulfide ore cyanizing gold extraction tailing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add the cyanide-treated sulfide gold concentrate gold extraction tailings into the slurry mixing tank 1, add water to adjust the slurry concentration to 50%, stir continuously at normal temperature and pressure, and after stirring evenly, put the rings into three parallel acidification tanks In step 2, add industrial sulfuric acid, adjust the acidity of the pulp to PH=5, stir continuously for 20 minutes, and keep the acidity at PH=5, and after the acidity is stable, put the pulp into the slurry mixing tank 3 continuously, stably and evenly, and add water to adjust the concentration of the pulp 25%, PH = 6, and continuous feeding and discharging, the pulp enters the stirring tank 4, while stirring, continuously and evenly add flotation reagents, the flotation reagents are butyl xanthate and butylamine black medicine, Mix and prepare according to the ratio of butyl xanthate: butylamine black medicine = 1.8:1, add flotation agent at 100 g / ton, add 2# oil foaming agent at 42...

Embodiment 2

[0037] The difference between this embodiment and embodiment 1 is that

[0038] Add the cyanide-treated sulfide gold concentrate gold extraction tailings into the slurry mixing tank 1, add water to adjust the slurry concentration to 40%, stir continuously at normal temperature and pressure, and after stirring evenly, put the rings into three acidizing tanks connected in parallel In step 2, add industrial sulfuric acid, adjust the acidity of the pulp to PH=5, and continue to stir for 15 minutes to keep the acidity at PH=5. After the acidity is stable, put the pulp into the slurry tank 3 continuously and evenly, and add water to adjust the concentration of the pulp 20%, PH = 6, and continuous feeding and discharging, the pulp enters the stirring tank 4, and while stirring, continuously and evenly adds the flotation agent, the flotation agent is butyl xanthate and butylamine black drug, Mix and prepare according to the ratio of butyl xanthate: butylamine black medicine = 2.2:1, a...

Embodiment 3

[0040] The difference between this embodiment and embodiment 1 is that

[0041] Add the cyanide-treated sulfide gold concentrate gold extraction tailings into the slurry mixing tank 1, add water to adjust the slurry concentration to 60%, keep stirring at normal temperature and pressure, and after stirring evenly, put the rings into three parallel acidification tanks In step 2, add industrial sulfuric acid, adjust the acidity of the pulp to PH=5, continue to stir for 25 minutes, and keep the acidity at PH=5. After the acidity is stable, put the pulp into the slurry mixing tank 3 continuously and evenly, and add water to adjust the concentration of the pulp 30%, PH = 6, and continuous feeding and discharging, the pulp enters the stirring tank 4, while stirring, continuously and evenly add flotation reagents, the flotation reagents are butyl xanthate and butylamine black medicine, Mix and prepare according to the ratio of butyl xanthate: butylamine black medicine = 2:1, add flota...

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Abstract

The present invention is floating process for enriching Cu, Ag, Au, etc from gold sulfide ore cyanizing gold extraction tailing, and belongs to the field of metallurgical chemical technology. The floating process includes the following steps: 1. setting the tailing into a conditioning tank and regulating the ore slurry density to 40-60 % via stirring at normal temperature; 2. setting into an acidifying tank, regulating the acidity with sulfuric acid to pH 5; 3. adding water to regulate the ore slurry density to 20-30 % and pH to 6 in the conditioning tank while continuous feeding and discharging; 4. adding floating reagent and foamer in a floating tank via stirring; and 5. closed path floating in the floating tank to enrich Cu, Ag, Au, etc. The present invention has simple technological process, high metal recovering rate and other advantages.

Description

1. Technical field [0001] The invention relates to a flotation process for enriching copper, gold, silver, etc. from cyanidation gold extraction tailings of sulfide gold mines, belonging to the field of metallurgy and chemical industry. 2. Background technology [0002] At present, in the gold smelting process, when gold and silver are extracted by direct cyanidation of sulfide gold concentrate, when the gold content in the cyanidation tailings is less than 1.5 g / t and the copper content is less than 0.3%~1.0%, Due to economic and technical reasons, it is generally not necessary to continue to recover valuable elements such as gold, silver, and copper in the tailings. Instead, the gold-extracted tailings are used as raw materials for the production of industrial sulfuric acid, and are directly sent to the sulfuric acid plant to produce sulfuric acid. The slag is used to produce iron red, cement and other products, and the valuable elements such as gold, silver and copper in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/004B03D1/01B03B1/00B03D101/04B03D101/00B03D103/02
Inventor 吕寿明李腾山苑兆金许世忠孙浩飞
Owner SHANDONG GUODA GOLD
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