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Environment-friendly gold leaching agent and preparation process thereof

A kind of leaching agent, environment-friendly technology, applied in the field of environment-friendly gold leaching agent, can solve the problems of toxic and harmful components of cyanide leaching gold, slow gold leaching speed, large drug consumption, etc., and achieve fast gold leaching speed and high recovery rate High, improve the effect of economic benefits

Inactive Publication Date: 2017-10-24
张韬 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an environment-friendly gold leaching agent, which can solve the toxic and harmful problems of cyanide gold leaching and the low useful components of the existing non-cyanide gold leaching agent and the gold leaching speed Slow, low recovery rate, poor effect and large drug consumption

Method used

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  • Environment-friendly gold leaching agent and preparation process thereof

Examples

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Embodiment 1

[0017] An environment-friendly gold leaching agent, which comprises the following components in parts by mass: 20 parts of urea, 20 parts of thiourea, 8 parts of sodium cyanate, 25 parts of ferric oxide, 18 parts of sodium carbonate, 30 parts of sodium hydroxide.

Embodiment 2

[0019] An environment-friendly gold leaching agent, which comprises the following components in parts by mass: 60 parts of urea, 15 parts of thiourea, 25 parts of sodium cyanate, 15 parts of ferric oxide, 30 parts of sodium carbonate, 20 parts of sodium hydroxide.

Embodiment 3

[0021] An environment-friendly gold leaching agent, which comprises the following components in parts by mass: 50 parts of urea, 10 parts of thiourea, 40 parts of sodium cyanate, 10 parts of ferric oxide, 20 parts of sodium carbonate, Sodium hydroxide 10 parts.

[0022] The preparation process of Examples 1-3 is as follows: prepare the materials according to the ratio of raw materials, add them into the mixing agitator and mix them evenly, then add them into the melting reaction furnace, control the reaction temperature at 800-1000°C, react at high temperature for 1-3 hours, and cool down to normal temperature The pulverizer pulverizes, and then sieves and packs to obtain an environment-friendly gold extractant.

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PUM

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Abstract

The invention discloses an environment-friendly gold leaching agent, which comprises the following components in parts by mass: 20-60 parts of urea, 5-20 parts of thiourea, 8-40 parts of sodium cyanate, tetraoxide 5-25 parts of triiron, 5-30 parts of sodium carbonate, 20-30 parts of sodium hydroxide. The environment-friendly leaching agent of the present invention comprehensively utilizes the cooperation between sulfur urine and iron ions, the coordination of nitrogen atoms in urea and Au3+ to produce a new mixture, and the reaction of urea and salts to generate soluble gold cyanate. The multiple action mechanisms of gold make it electrochemically react with the gold in the ore under the environment of the inhibitory control agent, thus becoming a new type of gold leaching agent with fast gold leaching speed, good leaching effect and high recovery rate of gold in the ore dressing agent. Environmentally friendly leaching agent.

Description

technical field [0001] The invention relates to an environment-friendly gold leaching agent. Background technique [0002] At present, cyanide is generally used as the leaching agent for gold leaching. Cyanide is highly toxic, and there are safety hazards in all aspects of transportation and production, and the management is difficult. Researching agents to replace cyanide in the gold industry has been a problem that the industry has been tackling for many years. In the beneficiation production of existing gold mines, the production process of leaching gold with cyanide is mostly used to produce gold. But this method has all brought extremely unfavorable influence to safe production and environmental protection because the cyanide used is highly toxic. In recent years, some scientific research and production units have explored some non-cyanide selection agents (such as ZL 201010553418.7, ZL 201310401606.1 and other products), but generally speaking, most of these products...

Claims

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Application Information

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IPC IPC(8): C22B11/00
CPCC22B11/04
Inventor 张韬周博
Owner 张韬
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