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Biological stirring cobalt-dipping technique for concentrate containing cobalt and sulfur

A technology of cobalt sulfur concentrate and a new process, which is applied in the direction of microorganisms, microorganisms, process efficiency improvement, etc., and can solve problems such as the use of sulfuric acid that cannot be solved

Inactive Publication Date: 2008-06-04
有研资源环境技术研究院(北京)有限公司
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Problems solved by technology

Among them, the copper sulfide ore is recovered by flotation process, and the copper flotation tailings contain 0.02% to 0.1% cobalt, and then the sulfur concentrate containing 0.1% to 1% cobalt is obtained through flotation. Roasting of concentrated ore to produce acid-slag leaching to extract cobalt can not solve the problem of the use of sulfuric acid, and will be unprofitable. There is no good way to use it at present

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  • Biological stirring cobalt-dipping technique for concentrate containing cobalt and sulfur
  • Biological stirring cobalt-dipping technique for concentrate containing cobalt and sulfur

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with embodiment.

[0029] For example, a copper mine in western my country is a sulfide deposit containing a large amount of pyrite and a small amount of cobalt. There is no independent cobalt mineral in the iron sulfide ore, and the element cobalt is mixed into the iron sulfide in the form of isomorphism. The average copper content of the mine is 1.6%, the average sulfur content is 36%, and the average cobalt content is 0.1%. The main gangue minerals are quartz, feldspar, chlorite, sericite and carbonate minerals.

[0030] (1) if figure 2 As shown, the raw ore mined in the mine undergoes crushing, grinding, flotation and other processes to recover copper in the ore to obtain high-sulfur and cobalt-containing tailings A. Sulfur flotation 13 is carried out on the high-sulfur and cobalt-containing tailings with a flotation machine to obtain sulfur concentrate C containing 1% cobalt; the flotation taili...

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Abstract

The invention relates to a biological mixing cobalt leaching novel technique for cobaltiferous sulfide ore concentrates. Cobalt sulphate which can be sold in the market are produced after procedures of fine grinding, washing and reagent removal, conditioning, biological mixing and leaching, solid-liquid separation, iron removal, cobalt precipitation and so on of the cobaltiferous sulfide ore concentrates. During the leaching process, the temperature of 40 to 55 DEG C, the PH value of 1.2 to 1.8 and certain ferrum concentration (1 to 15 grams per liter) in a system are needed to maintain in order to keep high activity of bacteria. The invention has the advantages of capability of fully utilizing mineral resources, improvement of comprehensive utilization level of mines, conservation of cost and improvement of profit, and is particularly suitable for development of cobaltiferous sulfide ore resources in remote areas.

Description

technical field [0001] The invention relates to a new process for stirring and leaching cobalt in cobalt-containing sulfur concentrate by using medium thermophilic acidophilic ore leaching bacteria to efficiently recover valuable cobalt metal in sulfide ore, improve the comprehensive utilization level of mines, and belong to the technical field of microbial metallurgy. Background technique [0002] Cobalt is a strategic metal, which has the advantages of high melting point, good wear resistance, high strength, and good magnetism. It is an important raw material for manufacturing various high-temperature alloys, magnetic materials, and anti-corrosion alloys. Widely used in aviation, aerospace, electrical appliances, machinery manufacturing, chemistry, ceramics and other industries. my country is a country lacking in cobalt resources, with only 39,000 tons of meaningful reserves and only 59,800 tons of basic reserves. At present, my country's cobalt extracted from imported co...

Claims

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Application Information

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IPC IPC(8): C22B3/18C22B3/44C12N1/00C22B23/00
CPCY02P10/20
Inventor 阮仁满温建康舒荣波
Owner 有研资源环境技术研究院(北京)有限公司
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