浮选药剂对嗜酸氧化亚铁硫杆菌浸出低品位铜尾矿的影响

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.fLD-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.fLD-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.fLD-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.fLD-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.%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, isoarnyl xanthate and oil 2; combinations of ethyl xanthate, butylamin and oil 2.