A kind of medium-temperature leaching ore composite bacterial system and leaching process for chalcopyrite leaching

A technology of compound bacteria and chalcopyrite, applied in the direction of improving process efficiency, microorganism-based methods, bacteria, etc., to achieve the effects of easy cultivation, good environmental adaptability, and strong commercial application prospects
CN105802869BInactive Publication Date: 2019-10-01有研资源环境技术研究院(北京)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
有研资源环境技术研究院(北京)有限公司
Publication Date
2019-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a medium-temperature ore-leaching composite microbial system used for leaching of chalcopyrite and an ore leaching process. The medium-temperature ore-leaching composite microbial system is Acidithiobacillus caldus 0Y which has been preserved in China Center for Type Culture Collection (CCTCC), Wuhan University, China, on January 20th, 2011, with an accession number of CCTCC No. M2010356. The medium-temperature ore-leaching composite microbial system is composed of Acidithiomicrobium ferrooxidans (81%), Acidithiobacillus caldus (13%) and Ferroplasma sp (6%). The composite microbial system has high leaching efficiency and especially has good commercial application prospects in dump leaching processes for low-grade copper sulphide like chalcopyrite.
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Description

technical field

[0001] The invention relates to the technical field of microbial leaching, in particular to a compound bacterial system for leaching chalcopyrite at a medium temperature and an ore leaching process thereof. Background technique

[0002] With economic development and social progress, the status of the copper industry in the development of the national economy is increasing day by day. Chalcopyrite is the main body of copper resources. However, studies have shown that the bioleaching of chalcopyrite by normal temperature organisms is difficult. In addition, although some mining companies have continuously released experiments on the stirring and leaching of chalcopyrite thermophilic bacteria, it is difficult to efficiently solve the problem of chalcopyrite leaching because thermoacidophilic bacteria are extremely sensitive to high pulp concentrations.

[0003] Therefore, it is a beneficial attempt to screen and cultivate efficient and highly adaptable mesophil...

Claims

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