浸出低品位銅尾礦的影響
(1. 北京科技大學(xué) 土木與環(huán)境工程學(xué)院，北京 100083；
2. 金屬礦山高效開采與安全教育部重點實驗室，北京 100083)
摘 要: 以分離于湖北某銅礦的嗜酸氧化亞鐵硫桿菌LD-1菌株(At.f LD-1)為研究對象，研究了4種不同碳鏈長度黃藥、丁胺黑藥、2號油、11號油單一浮選藥劑和由這些藥劑組成的5種組合藥劑對At.f LD-1菌株生長、氧化活性以及浸出尾礦效率的影響規(guī)律。結(jié)果表明：單一浮選藥劑均會影響At.f LD-1菌的氧化活性，影響程度有所差異，起泡劑對菌種的影響最小，捕收劑的影響較大；5種組合浮選藥劑對At.f LD-1菌株生長、氧化活性和浸銅效率的抑制作用從小到大順序為丁基黃藥+丁胺黑藥+2號油、異丙基黃藥+丁胺黑藥+2號油、異戊基黃藥+丁胺黑藥+2號油、乙基黃藥+異戊基黃藥+2號油、乙基黃藥+丁胺黑藥+2號油。
關(guān)鍵字: 浮選藥劑；微生物浸出；嗜酸氧化亞鐵硫桿菌；低品位銅尾礦；浸銅效率
low grade copper tailings by Acidthiobacillus ferrooxidans
（1. School of Civil and Environmental Engineering,
University of Science and Technology Beijing, Beijing 100083, China;
2. Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China）
Abstract:The effects of seven flotation reagents (four xanthate collectors of different carbon lengths, butylamine, oil 2 and oil 11) and five combinations of these flotation reagents on the growth, activity and bio-leaching capability of the strain Acidthiobacillus ferrooxidans LD-1 separated from some copper mine in Hubei Province, China was studied. The results show that these flotation reagents can all depress the growth and activity of the strain At.f LD-1. The depression of the collectors is stronger than that of frother. From weak to strong, the inhibition effects of these five combinations of reagents on the growth, activity and bio-leaching capability of the strain At.f LD-1 are in the following order: combinations of butyl xanthate, butylamin and oil 2; combinations of isopropyl xanthate, butylamin and oil 2; combinations of isoamyl xanthate, butylamin and oil 2; combinations of ethyl xanthate, isoamyl xanthate and oil 2; combinations of ethyl xanthate, butylamin and oil 2.
Key words: flotation reagent; microbiological leaching; Acidthiobacillus ferrooxidans; low grade copper tailings; copper leaching efficiency
