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An improved environment-friendly gold extraction agent

A gold extraction agent and an improved technology, which is applied in the field of gold production, can solve the problems of high toxicity of chemicals, environmental pollution, and low leaching rate of high-sulfur gold mines, and achieve improved leaching rate, reduced consumption of chemicals, and low toxicity of leaching stability The effect of environmental protection

Active Publication Date: 2020-07-31
新疆金川矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current cyanide gold extraction has the following disadvantages: the toxicity of the agent is large, and the environment is polluted
2. Low leaching rate for arsenic-containing and high-sulfur gold ores

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An improved environment-friendly gold extraction agent, raw materials include yellow blood salt, urea, sodium sulfide, sodium hydroxide, sodium hexametaphosphate, sodium carbonate.

Embodiment 2

[0027] An improved environment-friendly gold extraction agent, the raw materials and parts by weight are: 30 parts of yellow blood salt, 40 parts of urea, 10 parts of sodium sulfide, 8 parts of sodium hydroxide, 5 parts of sodium hexametaphosphate, 30 parts of sodium carbonate Parts; using the boiling process, the raw materials are taken in proportion and boiled at a temperature of about 700°C.

Embodiment 3

[0029] An improved environment-friendly gold extraction agent, the raw materials and parts by weight are: 20 parts of yellow blood salt, 30 parts of urea, 10 parts of sodium sulfide, 5 parts of sodium hydroxide, 3 parts of sodium hexametaphosphate, 20 parts of sodium carbonate Parts; using the boiling process, the raw materials are taken in proportion and boiled at a temperature of about 700°C.

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PUM

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Abstract

The invention discloses a modified environmentally-friendly gold extracting agent. The gold extracting agent comprises the following raw materials: potassium ferrocyanide, urea, sodium sulfide, sodiumhydroxide, sodium hexametaphosphate and sodium carbonate. The gold extracting agent can improve the leaching rate of gold and reduce agent consumption, is good in leaching stability, and meanwhile can properly treat gold ores containing arsenic and carbon.

Description

technical field [0001] The invention relates to the technical field of gold production, and is a leachate purification technology, in particular to an improved environment-friendly gold extraction agent. Background technique [0002] At present, more than 85% of the gold in the world is extracted by the cyanide method, and the production of gold by the cyanide method is a relatively mature process. Its advantages are simple process, low production cost, strong adaptability to ore, and high leaching rate; the disadvantages are long leaching time, serious personal safety and environmental pollution. With the current mining of gold mines in the world, the easy-to-handle mines are decreasing or exhausted, and complex and difficult-to-handle ores and lean ores have become the main resources for gold production. The research on comprehensive recovery technology of complex ores has become an important topic in the field of gold production. In terms of extraction process, the cyan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/12C22B11/00
CPCC22B3/12C22B11/04Y02P10/20
Inventor 张景河金琪琳何涛高伟
Owner 新疆金川矿业有限公司