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Liquid membrane extraction of gold-diaphragm electrolysis extraction of gold process

A diaphragm electrolysis and liquid membrane technology, which is applied in the field of metallurgy and chemical industry, can solve the problems of low comprehensive recovery rate, high production cost, lengthy process, etc., and achieve the effect of fewer separation stages, convenient operation and flexible application

Inactive Publication Date: 2009-04-29
CHANGCHUN GOLD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a liquid film gold extraction-diaphragm electrolytic gold extraction process, which solves the problems of lengthy process, complicated equipment, high power consumption, high production cost, low comprehensive recovery rate and the existing gold extraction process in the gold industry. The environmental protection of tailings sewage and the problem of effective and stable extraction of gold from the alkaline gold-bearing liquid of gold mines with low-grade gold-bearing ore resources

Method used

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  • Liquid membrane extraction of gold-diaphragm electrolysis extraction of gold process
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  • Liquid membrane extraction of gold-diaphragm electrolysis extraction of gold process

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Comparison scheme
Effect test

Embodiment 1

[0042] The cyanide leaching gold-containing precious liquid produced in the actual production process of Baiyun Gold Mine in Liaoning carries out liquid film extraction and diaphragm electrolysis test according to the process steps of the present invention, and the test results are shown in Table 1 and Table 2:

[0043] Table 1 Results of liquid membrane gold extraction test

[0044]

[0045] Table 2 Electrolysis test results of gold-containing inner phase separator

[0046] Electrolysis voltage

[0047] It can be seen from the above test results that using the emulsified liquid film gold extraction-diaphragm electrolysis process of the present invention can effectively extract gold in the actual gold-containing solution of a gold mine under high pH conditions.

Embodiment 2

[0049] The embodiment of the present invention adopts the cyanidation leaching gold-containing precious liquid produced in the actual production process of Liaoning Tianli Mining Company to carry out the emulsified liquid membrane extraction and diaphragm electrolysis test under different pH conditions according to the process steps of the present invention. The test results are shown in Table 3. Table 4:

[0050] Table 3 Results of liquid membrane gold extraction test

[0051]

[0052] Table 4 Electrolysis test results of gold-containing inner phase separator

[0053] Electrolysis voltage

[0054] Can find out by above-mentioned test result, use emulsified liquid film of the present invention to extract gold-diaphragm electrolysis process can carry out effective extraction to the gold in the actual gold-containing solution of gold mine under the condition of high pH value, simultaneously the gold in the gold-containing inner phase Gold also electrodeposits well ...

Embodiment 3

[0056] Embodiment 3 of the present invention adopts the cyanidation leaching gold-containing precious liquid produced in the actual production process of the heap leaching field of Liaoning Jinfeng Gold Mine to carry out liquid film gold extraction and diaphragm electrolysis tests under the situation of pH=8 according to the process steps of the present invention, and For Au and CN in the electrolyte - The changes were tracked and analyzed, and the results are shown in Table 5 and Table 6:

[0057] Table 5 Results of liquid film gold extraction test

[0058] stock solution raffinate Extraction rate pH 2.05 0.12 94.1 8 1.94 0.18 90.7 8 2.12 0.21 90.1 8 2.16 0.15 96.1 8 1.97 0.14 92.9 8 1.83 0.15 91.8 8 2.08 0.18 91.3 8 2.11 0.23 89.1 8 2.21 0.22 90.0 8

[0059] Table 6 Electrolysis test results of gold-containing inner phase separator

[0060]

[0061] As can be seen from the above test resu...

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Abstract

The invention relates to a liquid membrane gold extraction-diaphragm electrolysis gold extraction process, which belongs to the metallurgy and chemical industry. The process comprises two parts, namely emulsion liquid membrane gold extraction and gold-contained enrichment diaphragm electrolysis gold extraction, wherein the emulsion liquid membrane gold extraction comprises the preparation of an emulsion liquid membrane, the extraction process of the emulsion liquid membrane, and the emulsion breaking process of a gold-contained emulsion liquid membrane. The process has the advantages that the process has a large driving force of mass transfer, few separation stages needed, and little agent consumption; the process improves the production efficiency and greatly simplifies the gold extraction technical flow; useful materials are reclaimed so as to produce no secondary pollution and achieve the more effective energy utilization; and the process is taken as unit operation, and has flexible use, convenient operation and easy realization of automatic control.

Description

technical field [0001] The present invention relates to metallurgy and chemical engineering, and in particular to a liquid film gold extraction-diaphragm electrolytic gold extraction process, especially a liquid film extraction and electrolysis process for gold in alkaline gold-containing precious liquid in gold mines with low-grade gold-containing ore resources . Background technique [0002] As we all know, liquid membrane as a separation technology began in the 1960s, and has been developed into emulsion liquid membrane, support liquid membrane, quasi-liquid membrane and so on. Liquid membrane technology breaks the inherent balance limitation in traditional solution extraction technology, and combines the two processes of extraction and stripping in one step, so it can effectively recover and enrich various metal ions from dilute solutions , organic and inorganic ions or substances, and can also remove or recycle harmful substances from wastewater. It has shown extremel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C25C1/20
CPCY02P10/20
Inventor 李哲浩龙振坤
Owner CHANGCHUN GOLD RES INST
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