Comprehensive recovery production method with gold concentrate flotation and cyanide flotation

A technology of mine flotation cyanide flotation and production method, which is applied in flotation, solid separation and other directions to achieve the effects of improving the operating environment, increasing the recovery rate, and improving the selected grade

Inactive Publication Date: 2013-08-07
SHANDONG GOLD MINING LAIZHOU CO LTD REFINERY
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AI Technical Summary

Problems solved by technology

This process has brought many hidden dangers to the operation, increased the amount of hazardous chemicals, polluted the environment, and affected the economic benefits of the enterprise.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] Below in conjunction with example further illustrate the present invention.

[0019] The first step, gold concentrate flotation: gold concentrate with a concentration of 15% to 20% and a grinding fineness of -400 mesh accounts for 90% to 92%, the pH value is adjusted to 7 to 8, and collectors are added for mixing Flotation to obtain low-sulfur tailings pulp and mixed concentrate pulp; press-filter the low-sulfur tailings pulp, and the obtained low-sulfur ore enters the third step, and the filtrate is returned to the grinding and flotation system; the mixed concentrate pulp is not adjusted by pressure filtration Go directly to the second step.

[0020] The second step, mixed concentrate separation: adjust the mixed concentrate slurry obtained in the first step to a concentration of 15% to 20%, a pH value of 7 to 8, and add a collector for separation and flotation to obtain a high-copper, lead-zinc concentrate Pulp and high-sulfur tailings slurry, press-filter the high-c...

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Abstract

The invention relates to a comprehensive recovery production method with gold concentrate flotation and cyanide flotation. According to the method, a high copper lead zinc mine of 4% to 6% yields is obtained through gold concentrate flotation, mixed selection and separated selection, a high copper lead concentrate obtained through cyanide leaching is subjected to flotation, the sulfuric acid using amount is reduced to 5% of the original using amount in cyanide leaching residue separation flotation, and the exhaust gas treatment capacity is also reduced to 5% of the original treatment capacity, so that the using amount of dangerous chemicals in production is greatly reduced and the working environment of workers is greatly improved. Meanwhile, the operation cost of auxiliary production facilities is also greatly reduced owing to the reducing of the amount of exhaust gas.

Description

[0001] technical field [0002] The invention relates to a production method for obtaining high-copper ore, high-sulfur ore and low-sulfur ore by flotation of gold concentrate, followed by cyanation respectively, and flotation of high-copper-cyanide slag to comprehensively recover gold, silver, lead, zinc and copper. The main production process is "gold concentrate flotation", then "separate cyanidation of flotation products", and finally "re-flotation of high-copper cyanide slag", so it is referred to as the comprehensive recovery production method of gold concentrate cyanide flotation. Background technique [0003] In the gold smelting industry, the direct cyanidation gold extraction technology is generally adopted, the tailings are not floated, and the sulfur ore is directly operated and sold, so that the comprehensive recovery of polymetallics cannot be obtained; in addition, the direct cyanidation gold extraction technology is adopted, Tailings are not directly flotati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/001B03D1/08B03D101/02
Inventor 王德煜姚福善张金龙陈光辉李春刘瑞强王夕亭李光胜宋广君朱建鹏范卿马涌周发军
Owner SHANDONG GOLD MINING LAIZHOU CO LTD REFINERY
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