Method of treating sulfide ore spontaneous combustion using bacteria leaching out method

An ore and leaching technology, which is applied in the field of spontaneous combustion and fire control of high-sulfur ore deposits, and bacterial leaching to control the spontaneous combustion of sulfide ores, can solve the problems of inability to cure sulfide ore fires and lack of technical means, and achieve low cost, short process flow, and little environmental pollution Effect
CN1948523AInactive Publication Date: 2007-04-18UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2007-04-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method is disclosed to father self-ignition of pyrites by bacterium extraction, which belongs to the field of ore deposit fireproof. Acidic immersion liquiol with special thiophil bacteria is sprinkled in blasting pile by system of liquid distribution. With the interaction of bacteria and oxygen, oxidizable ore on the surface of ore particles is changed from solid phase to liquid phase. Temperature of blasting pile is lowered below critical temperature of ore self-ignition by increasing flux of immersion liquiol. The invention has much strongpoint including low cost, little investment, brief craft flow, small environmental pollution and moderate biochemical reaction etc. Safe manufacturing techniques of high-sulphur ore are formed by combining with the craft of original mining, which eliminate intrinsic fire hazards of high-sulphur deposit radically to advance father effect and reduce father cost. The invention is applicable for mining enterprises with spontaneous ignition such as chemical, colored and black mines etc.
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Description

technical field

[0001] The invention belongs to the technical field of mineral deposit fire prevention, and relates to a method for controlling spontaneous combustion of sulfide ore by bacterial leaching, which is suitable for the control of spontaneous combustion and ignition of high-sulfur mineral deposits. Background technique

[0002] In the mining of sulfur-bearing ores, internal fire is one of the main disasters. According to statistics, about 20% to 30% of pyrite and 5% to 10% of nonferrous metal or polymetallic sulfide ores in China have internal fire hazards. For example, there were 68 internal fires in Xiangshan Pyrite Mine between 1955 and 1980, and more than 100 underground fires in Songshushan Copper Mine. Similar problems also exist in foreign sulfide ores. In May 1972, 91 people were killed in a single fire at the Klock Mine in the United States, and there were more than 300 fires at the Ural Copper Mine in the former Soviet Union.

[0003] In terms of spon...

Claims

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