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A kind of environment-friendly gold leaching agent and preparation method thereof

A gold leaching agent and environmental protection technology, which is applied in the field of environmental protection gold leaching agent and its preparation, can solve the problems of environmental pollution and high toxicity, and achieve the effects of simple production process, increased gold leaching rate, and reduced production cost

Active Publication Date: 2020-07-24
山东联盟磷复肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of high toxicity and environmental pollution in existing gold leaching agents, the present invention provides a preparation method of an environmentally friendly gold leaching agent:

Method used

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  • A kind of environment-friendly gold leaching agent and preparation method thereof
  • A kind of environment-friendly gold leaching agent and preparation method thereof
  • A kind of environment-friendly gold leaching agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Gold leaching agent components Amount added / g effect sodium ethylate 20 strong base sodium hydroxide 15 strong base Sodium fluorosilicate 11 anticoagulant silica 6 anticoagulant Sodium Polydisilicate 12 Soaking aid 4A zeolite 8 Soaking aid Melamine ammonium cyanurate 10 synergist Antimony trioxide 5 synergist potassium pyrophosphate 5 Chelating agent sodium oxalate 2 Chelating agent

[0024] The preparation method is as follows:

[0025] S1, take strong alkali, anticoagulant, leaching aid, chelating agent by weight, after mixing evenly, fully grind, pass through 100 mesh sieve, set aside;

[0026] S2. Put the material obtained in step S1 into a crucible, pass through a muffle furnace, and bake at 700° C. for 2.5 hours, take it out, let it stand, and cool to room temperature;

[0027] S3, crushing the cooled material in step S2 to 100 mesh;

[0028] S4. Mix the pulverized ma...

Embodiment 2

[0033] Gold leaching agent components Amount added / g effect sodium ethylate 20 strong base sodium hydroxide 15 strong base Sodium fluorosilicate 11 anticoagulant silica 6 anticoagulant Sodium Polydisilicate 12 Soaking aid 4A zeolite 8 Soaking aid Melamine ammonium cyanurate 5 synergist Antimony trioxide 1 synergist potassium pyrophosphate 3.5 Chelating agent sodium oxalate 1 Chelating agent

[0034] The preparation method is as follows:

[0035] S1, take strong alkali, anticoagulant, leaching aid, chelating agent by weight, after mixing evenly, fully grind, pass through 100 mesh sieve, set aside;

[0036] S2. Put the material obtained in step S1 into a crucible, pass through a muffle furnace, and bake at 750° C. for 2.5 hours, take it out, let it stand, and cool it to room temperature;

[0037] S3, crushing the cooled material in step S2 to 100 mesh;

[0038] S4. Mix the pulverize...

Embodiment 3

[0042] Gold leaching agent components Amount added / g effect sodium ethylate 25 strong base sodium hydroxide 10 strong base Sodium fluorosilicate 11.4 anticoagulant silica 7.6 anticoagulant Sodium Polydisilicate 15.4 Soaking aid 4A zeolite 8.6 Soaking aid Melamine ammonium cyanurate 10 synergist Antimony trioxide 5 synergist potassium pyrophosphate 5 Chelating agent sodium oxalate 2 Chelating agent

[0043] The preparation method is as follows:

[0044] S1, take strong alkali, anticoagulant, leaching aid, chelating agent by weight, after mixing evenly, fully grind, pass through 100 mesh sieve, set aside;

[0045] S2. Put the material obtained in step S1 into a crucible, pass through a muffle furnace, and bake at 700° C. for 2.5 hours, take it out, let it stand, and cool to room temperature;

[0046] S3, crushing the cooled material in step S2 to 100 mesh;

[0047] S4. Mix the pulve...

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Abstract

The invention relates to the technical field of gold leaching, in particular to an environment-friendly gold leaching agent and a preparation method thereof. The gold leaching agent is composed of thefollowing components including strong base, an anticoagulation, an auxiliary, a synergist and a chelating agent. The gold leaching agent does not contain highly-toxic components such as sodium cyanide, the preparation method is simple, the yield is high, the gold leaching effect is more efficient and stable, the environment-friendly gold leaching agent is suitable for gold leaching of oxidized ore, sulfur concentrate, pyrite, calcined tailings with many harmful impurities and the like, the application range is wide, and a good industrial application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of gold extraction, in particular to an environment-friendly gold leaching agent and a preparation method thereof. Background technique [0002] The massive discharge of gold mine tailings will not only cause the loss of gold and other valuable metals, but also bring great potential harm to the environment. The development and utilization of tailings resources to extract gold can not only save resources, but also help to improve the economic and social benefits of mining enterprises. Therefore, the study of comprehensive recovery of tailings resources is very important for the full and reasonable development and utilization of mineral resources and the promotion of sustainable development of mines. development is important. [0003] The cyanidation gold extraction process has a history of more than 100 years. Due to its low cost, outstanding effect and mature process, it is still the main method of gold lea...

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 牟建辉唐春晖尹世波孟祥科刘志臣苗乃兵云维采
Owner 山东联盟磷复肥有限公司
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