Study on Enrichment of Mixed Bacteria and Its Bioleaching of Low-grade Tellurium Ore
XIE Hong-guan1, LI Lin1, TONG Jin1, WANG Ding-chun2, HOU Long-chao2, LEI Ning-fei1
1. Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China;
2. Sichuan Xinju Mineral Resources Development Stock Co Ltd, Chengdu 610031, Sichuan, China
Abstract：The mixed bacterial was obtained by enrichment from acid water and soil of asbestos mining area in Sichuan province and was domesticated. Primary studies on the influence factors of tellurium during leaching low-grade tellurium ore by mixed bacteria in shake flask tests were carried out. The results showed that when the temperature was 30 ℃ the leaching effect of mixed bacteria was the best, and the leaching rate reached 66.2% after leaching for 15 days with the pulp concentration of 1%. When the initial pH value was 1.5～2.0, the leaching rate of tellurium ore was high by the mixed bacterial. When the pH value was 1.5, the leaching rate was the highest and reached 67.8%. The leaching effect of tellurium ore was good by the mixed bacteria with a lower pulp concentration(1%～2%), the leaching rate can reach 66.6% after leaching for 15 days. The verification experiments showed that the leaching rate of tellurium can reach 75.8% after leaching for 15 days at a temperature of 30 ℃, with an initial pH value of 1.5, pulp concentration of 2%.
谢鸿观, 李凛, 童晋, 王定椿, 侯龙超, 雷泞菲. 混合菌的富集及浸出低品位碲矿的研究[J]. 矿冶工程, 2011, 31(2): 71-73.
XIE Hong-guan, LI Lin, TONG Jin, WANG Ding-chun, HOU Long-chao, LEI Ning-fei. Study on Enrichment of Mixed Bacteria and Its Bioleaching of Low-grade Tellurium Ore. Mining and Metallurgical Engineering, 2011, 31(2): 71-73.
2011, Vol. 31 
