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Leaching-ore bacteria and biological indium extraction process in sphalerite concentrate ore

A technology of leaching bacteria and zinc concentrate, which is applied in the field of biological indium extraction technology, can solve the problems of not having a very ideal smelting treatment method and the like

Active Publication Date: 2010-06-23
有研资源环境技术研究院(北京)有限公司
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AI Technical Summary

Problems solved by technology

For a long time, the enrichment and comprehensive recovery of indium has been a very difficult problem, and there is no ideal smelting treatment method yet

Method used

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  • Leaching-ore bacteria and biological indium extraction process in sphalerite concentrate ore
  • Leaching-ore bacteria and biological indium extraction process in sphalerite concentrate ore

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Embodiment 1

[0019] The new process was applied to a low-grade zinc concentrate containing arsenic in Northwest my country. The ore sample is mainly sphalerite, and there are also a small amount of pyrite, chalcopyrite, gangue minerals and a very small amount of galena. Gangue minerals are mainly carbonate minerals (calcite and dolomite), and a small amount of quartz, feldspar and so on. All minerals are basically in the state of single particles. The content of zinc in the ore is 47.62%, iron 13.07%, indium 0.0146%, sulfur 30.77%.

[0020] (1) Complex growth and amplified culture of ore-leaching bacteria

[0021] Ore leaching bacteria (this bacterium is deposited in Wuhan University, China National Center for Typical Culture Collection, the culture name is Leptospirillum ferrooxidans Retech-SPL-1, the preservation registration number is CCTCC No: M208162, and the preservation date: October 17, 2008. In ordinary tap water with a pH value of 1.5-2.0, add a certain zinc concentrate, ammoniu...

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Abstract

The invention provides leaching-ore bacteria and a biological indium extraction process in a sphalerite concentrate ore. The name of the leaching-ore bacteria is Leptospirillum ferrooxidans Retech-SPL-1, the preservation register number of the leaching-ore bacteria is CCTCC NO:M 208162, the preservation data is on October 17th in 2008, the preservation unit of the leaching-ore bacteria is China Center for Type Culture Collection, and the address of China Center for Type Culture Collection is in the Wuhan University. The biological indium extraction process in the sphalerite concentrate ore comprises the following steps: carrying out acclimatisation and amplification culture on the leaching-ore bacteria; putting the cultivated leaching-ore bacteria in a stirring pot containing ore pulp; completing the leaching process by aerating and stirring; and sending leaching solution obtained by the leaching step to the step of iron removing and indium extracting back-extraction electrodeposition. The invention has the advantages of being benefit for environment protection and also being used for developing the low grade indium resource which is not easily comprehensively utilized by the conventional beneficiation and metallurgy technology, enlarging the utilization range of the indium mineral resource and improving the comprehensive utilization of the indium.

Description

technical field [0001] The invention relates to a bio-indium extraction process from a leaching bacteria and zinc concentrate, in particular to a bio-indium extraction process from a leaching bacteria and sphalerite concentrate. Background technique [0002] Indium, as an advantageous scattered metal resource in my country, is often associated with polymetallic zinc concentrates. After beneficiation, indium is mainly enriched in zinc concentrates. Therefore, the zinc concentrate after flotation is the largest raw material source for extracting indium, and the research on extracting indium from zinc concentrate has always been one of the focuses of metallurgists at home and abroad. The traditional refining process not only has a long process, many procedures, complex equipment, large investment, but also a large amount of slag treatment, and the recovery rate of indium is mostly below 50%. For a long time, the enrichment and comprehensive recovery of indium has been a very d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C22B3/18C22B58/00C12R1/01
CPCY02P10/20
Inventor 刘学温建康宋永胜刘美林
Owner 有研资源环境技术研究院(北京)有限公司
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