Microbiological oxidation and reduction coupling leaching method for valuable metal in manganese oxide ore

Abstract

The invention relates to a microbiological oxidation and reduction coupling leaching method for valuable metal in manganese oxide ore, characterized in that the leaching microbe is alicyclobacillus BM strains with the preservation number of CGMCC4500, and ferrous ions are added to the culture medium of the alicyclobacillus BM strains. In the invention, the leaching strain alicyclobacillus BM is used for leaching the valuable metal in the manganese oxide ore. The microbe not only can use carbon dioxide as a carbon source and use ferrous oxide ions to acquire energy, but also can use organic matters to realize quick and massive proliferation, thereby improving the leaching rate and the leaching effect, overcoming the defects of slow growth and small quantity of chemoautotrophic microbes, and enabling bioleaching to be applied to industrial leaching of low-grade manganese ore.

Description

Technical field

[0001] The invention belongs to the technical field of microbial metallurgical beneficiation, and specifically relates to a method for microbial oxidation-reduction coupled leaching of valuable metals in manganese oxide ore. Background technique

[0002] Pyrolusite, especially low-grade pyrolusite, is the main component of manganese ore resources in my country. my country is known for the distribution characteristics of manganese iron ore in North Iron and South Manganese, but with the gradual consumption of middle and high-grade manganese ore resources in the south, scientific researchers and mining enterprises have turned their attention to the rich low-grade manganese ore in the north. However, the low-grade manganese ore in the north has the disadvantages of more impurities and low manganese content, which makes the traditional physical and chemical leaching process not suitable for the mining of manganese ore in the north.

[0003] Microbial metallurgy has the...