浸出低品位铜尾矿的影响
(1. 北京科技大学 土木与环境工程学院，北京 100083；
2. 金属矿山高效开采与安全教育部重点实验室，北京 100083)
摘 要: 以分离于湖北某铜矿的嗜酸氧化亚铁硫杆菌LD-1菌株(At.f LD-1)为研究对象，研究了4种不同碳链长度黄药、丁胺黑药、2号油、11号油单一浮选药剂和由这些药剂组成的5种组合药剂对At.f LD-1菌株生长、氧化活性以及浸出尾矿效率的影响规律。结果表明：单一浮选药剂均会影响At.f LD-1菌的氧化活性，影响程度有所差异，起泡剂对菌种的影响最小，捕收剂的影响较大；5种组合浮选药剂对At.f LD-1菌株生长、氧化活性和浸铜效率的抑制作用从小到大顺序为丁基黄药+丁胺黑药+2号油、异丙基黄药+丁胺黑药+2号油、异戊基黄药+丁胺黑药+2号油、乙基黄药+异戊基黄药+2号油、乙基黄药+丁胺黑药+2号油。
关键字: 浮选药剂；微生物浸出；嗜酸氧化亚铁硫杆菌；低品位铜尾矿；浸铜效率
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
