Study on Bioleaching of Low Grade Phosphate Ore
Traditional mineral processing techniques are more and more difficult to recover the increasingly low grade phosphate ores today. Although bioleaching method has been attempted to process low grade ores in hydrometallurgical field due to economical and environmental reason, it has been hardly used in leaching phosphate ore at home and abroad. Strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans were collected and separated from the acid drainage of a coal mine in Anhui province of China. Ultraviolet irradiation and Microwave inducement were applied to the bacterial cultivation process to produce swains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans able to tolerate extremely low pH conditions and generate sulphuric acid by oxidizing elemental sulfur or sulphide and the mutagenesis can achieve higher leaching rate. The bioleaching result will improve more by the addition of Tween series surfactants.
At.t (Acidithiobacillus thiooxidans) At.f (Acidithiobacillus ferrooxidans) Low grade phosphate ores Bioleaching Surfactant
J. Liu W. Q. Gong
School of Resources and Environment, Wuhan University of Technology, Wuhan, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2701-2705
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）