Compound bacterium for leaching of manganese slag

A technology of compound flora and manganese slag, applied in microorganism-based methods, bacteria, microorganisms, etc., can solve the problems of high heavy metal content, inability to use economical and environmentally friendly treatment, and low manganese grade.

Inactive Publication Date: 2013-08-14
TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of manganese slag contains high heavy metal content and low manganese grade, which cannot be treated economically and environmentally friendly with existing technologies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] 1. Preparation of complex flora

[0021] Firstly, prepare the culture medium used for the expanded culture of the flora. The formula of the culture medium is as follows: 1%-5% pyrite, 0.05%-0.1% ammonium sulfate and 0.5% potassium dihydrogen phosphate, and the pH is 2.0-3.0. Then, Acidithiobacillus thiooxidans (ATCC No. 8085), A ferrooxidans (ATCC No. 13598), and Leptospirillums ferroxidans (ATCC No. 49879) were inoculated into the culture medium respectively. In the base, 30 ℃, under 180rpm condition, carry out expansion culture, then the bacterial liquid of expansion culture is mixed to make composite flora. Among them, the number ratio of Thiobacillus ferrooxidans, Thiobacillus thiooxidans and Helicobacter leptosus is 1-5:1-5:1, and the number of viable bacteria in the composite flora is 10 7 ~ 10 9 CFU / ml.

[0022] 2. Application of complex flora

[0023] (1) Preparation of biological presoak

[0024] The bacterial culture medium for preparing the mixed bacter...

Embodiment 1

[0032] (1) Preparation of biological presoak

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PUM

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Abstract

The invention aims at providing a compound bacterium for leaching of manganese slag, that is, the manganese slag is treated by using the compound bacterium comprising thiobacillus ferrooxidans, thiobacillus thiooxidans and leptospirillums ferrooxidans, and thus the quality of leachate is improved and the manganese slag is comprehensively utilized. Metal ions in the manganese slag can be efficiently leached by pre-leachate, and manganese leachate can be well purified by using pre-leached slag. Meanwhile, a method matched with the bacterium comprises preparation of the pre-leachate, process of leaching the manganese slag by using the prepared pre-leachate, and subsequent treating process of the leachate. The quality of the prepared treated solution can meet the requirement of preparing industrial grade manganese sulfate, manganese carbonate and electrolyte manganese.

Description

technical field [0001] The invention belongs to the technical field of biological hydrometallurgy, and in particular relates to a composite bacterial group for manganese ore leaching, that is, a mixed bacterial solution composed of Thiobacillus ferrooxidans, Thiobacillus thiooxidans and Helicobacter leptosus. Background technique [0002] Microbial metallurgy is a technology that uses special metabolic activities or metabolites of microorganisms to extract useful metal elements from ores by leaching, adsorption or precipitation under milder conditions. It belongs to the third-generation metallurgical process. Compared with traditional physical and chemical methods, biometallurgy has been widely studied because of its low energy consumption, high ore utilization, and environmental friendliness. At present, it has been applied to the recovery of copper, uranium, gold, cobalt, nickel, zinc and other precious metals. [0003] Manganese is one of the essential metal elements for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C22B3/18C12R1/01
Inventor 韩一凡王兴彪王敬敬张小霞马皛梅黄志勇
Owner TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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