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Device and method for extracting gold from gold concentrate through non-cyanide leaching

A gold concentrate and leaching technology, applied in the field of gold concentrate, can solve the problems of easily corroded equipment, human health impact, high toxicity of chemicals, etc., and achieve the effects of less corrosiveness, simple structure and less toxicity of equipment

Pending Publication Date: 2022-04-29
辽宁招金白云黄金矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the main method for extracting gold from gold concentrate is to use cyanide leaching method, but this method has relatively high toxicity of chemicals, which not only easily corrodes equipment, but also affects human health. Therefore, it is necessary to develop a more secure , Gold extraction rate higher extraction technology is the technical problem that needs to be solved urgently in this field

Method used

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  • Device and method for extracting gold from gold concentrate through non-cyanide leaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method for extracting gold by non-cyanide leaching of gold concentrate proposed by the present invention has the following steps:

[0032] S1: The gold concentrate is ball milled, and at least 90% of the gold concentrate particle size after ball milling is less than 200 mesh;

[0033] S2: Add the gold concentrate ball-milled in S1 into the tank, and add leachate into the tank at the same time, the mass-volume ratio of the gold concentrate to the leachate is 1g:3mL;

[0034] S3: The rotation of the stirring shaft is controlled by the drive motor, and the stirring shaft drives the material to rotate. At the same time, the pressure regulating plate moves back and forth along the reversing thread on the stirring shaft to achieve the purpose of continuously adjusting the pressure in the tank. The maximum pressure in the adjusted tank is 0.5 MPa;

[0035] S4: During the leaching process, the tank body is heated to the preset temperature through the heating module, then t...

Embodiment 2

[0040] The method for extracting gold by non-cyanide leaching of gold concentrate proposed by the present invention has the following steps:

[0041] S1: The gold concentrate is ball milled, and at least 90% of the gold concentrate particle size after ball milling is less than 200 mesh;

[0042] S2: Add the gold concentrate ball-milled in S1 into the tank, and add leachate into the tank at the same time, the mass-volume ratio of the gold concentrate to the leachate is 1g:2mL;

[0043] S3: The rotation of the stirring shaft is controlled by the drive motor, and the stirring shaft drives the material to rotate. At the same time, the pressure regulating plate moves back and forth along the reversing thread on the stirring shaft to achieve the purpose of continuously adjusting the pressure in the tank. The maximum pressure in the adjusted tank is 0.4 MPa;

[0044] S4: During the leaching process, the tank body is heated to the preset temperature through the heating module, then t...

Embodiment 3

[0049] The method for extracting gold by non-cyanide leaching of gold concentrate proposed by the present invention has the following steps:

[0050] S1: The gold concentrate is ball milled, and at least 90% of the gold concentrate particle size after ball milling is less than 200 mesh;

[0051] S2: Add the gold concentrate ball-milled in S1 into the tank, and add leachate into the tank at the same time, the mass-volume ratio of the gold concentrate to the leachate is 1g:4mL;

[0052] S3: The rotation of the stirring shaft is controlled by the drive motor, and the stirring shaft drives the material to rotate. At the same time, the pressure regulating plate moves back and forth along the reversing thread on the stirring shaft to achieve the purpose of continuously adjusting the pressure in the tank. The maximum pressure in the adjusted tank is 0.6 MPa;

[0053] S4: During the leaching process, the tank body is heated to the preset temperature through the heating module, then the...

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Abstract

The device comprises a tank body, an end cover is detachably arranged at the upper end of the tank body, a driving motor is fixedly arranged at the upper end of the end cover, the output end of the driving motor penetrates through the end cover and is fixedly connected with a stirring shaft, the stirring shaft is provided with a stirring paddle, and the stirring paddle is fixedly connected with the driving motor. The stirring shaft is further sleeved with a pressure adjusting plate in threaded connection with the stirring shaft, the adjusting plate is in interference fit with the inner wall of the tank body, the stirring shaft is provided with reversing threads matched with the adjusting plate, and the adjusting plate moves back and forth along the stirring shaft by rotating the stirring shaft so as to adjust the internal pressure of the tank body. According to the method, the harm of a leaching agent to a human body is reduced, and the gold extraction rate is increased.

Description

technical field [0001] The invention relates to the technical field of gold concentrate, in particular to a device and a method for extracting gold by non-cyanide leaching of gold concentrate. Background technique [0002] At present, the main method for extracting gold from gold concentrate is the cyanide leaching method, but this method has relatively high toxicity of chemicals, which not only easily corrodes equipment, but also affects human health. Therefore, it is necessary to develop a more secure The extraction process with higher gold extraction rate is a technical problem that needs to be solved urgently in this field. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a device and method for extracting gold by non-cyanide leaching of gold concentrate, which not only reduces the harm of leaching agents to the human body, but also improves the gold extraction rate. [0004] The device for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/02C22B3/04C22B11/00
CPCC22B3/02C22B3/08C22B11/04Y02P10/20
Inventor 赵鲁国豆娜姚丙森丛铮
Owner 辽宁招金白云黄金矿业有限公司
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