• 综合利用 •

### 氨水对碱性细菌浸出铜尾矿的影响

1. 北京科技大学
• 出版日期:2011-01-15 发布日期:2011-01-06
• 基金资助:

教育部新世纪优秀人才支持计划项目（编号：NECT-07-0070），国家自然科学基金重点项目（编号：50934002）

### Impact of Ammonia on Alkaline Copper Tailings Bioleaching

Liu Weifang，Wang Hongjiang，Huang Mingqing，Wu Aixiang

1. University of Science and Technology Beijing
• Online:2011-01-15 Published:2011-01-06

Abstract: In view of low copper bioleaching rate of acclimatized alkaline bacteria on copper tailings, biochemical leaching tests by adding appropriate amount of ammonia are carried out, which are compared with the results of single chemical leaching tests to find out the right way for tailings leaching. The results show that in pure ammonia leaching test, copper leaching grows slowly with the ammonia increased to a higher concentration; In the combining leaching tests, a higher copper leaching rate of 35.57% can be achieved when the initial concentration of ammonia is 40g / L within about 30 d; The single alkaline bioleaching can reach maximum leaching rate of 24.51%; Under the same conditions, the leaching rate with single ammonia is only 11.98%; And the combining leaching rates are increased by 11.06% and 23.59% respectively. It can be seen that low concentration of ammonia can promote the bacteria leaching.