新疆某氧硫混合铜矿，铜金属储量达20多万t。由于矿石品位低、氧化率高、钙镁碱性脉石含量高，且-20μm原生矿泥高达60％，采用传统酸浸工艺和生物浸出工艺均无法获得较好的技术指标。而采用硫酸铵-氨水-过硫酸铵浸出体系，在常温常压、液固比2∶1、磨矿细度-0．074 mm占86％、搅拌转速200 r/min情况下，三段分批加药浸出，获得了渣计铜浸出率大于86．50％的优良指标，为工业应用打下了良好基础。
This paper focuses on an oxygen-sulfur mixed copper mine in Xinjiang with copper reserves of more than 200 thousand tons .While the run-dof-mine is charactered with low grade , high oxidation rate , high alkaline gangue content of calcium and magnesium and high native slime which is 60 %, conventional acid leaching direct leaching process and bio-leaching processes are helpless in obtaining better product indexes .In this study ,ammonium sulfate-ammonia-ammonium persulfate leaching system is explored .The optimal conditions are as follows: a liquid to solid ratio of 2∶1,a grinding fineness of -0.074 mm content accounting for 86 %,a stirring speed of 200 r/min and leaching drugs addition in three times at room temperature and atmospheric pressure .Total copper in leaching residue is more than 86.50 %,which lays a good foundation for the industrialization .
参考文献
| [1] | 王中奎.低品位氧化铜矿湿法冶金的探讨[J].有色金属技术经济研究,1991(02):11-20. |
| [2] | 王卉,吕萍.含泥铜矿制粒堆浸-细菌氧化浸铜试验研究[J].湿法冶金,1997(04):23. |
| [3] | 张文斌.氧化铜矿浮选研究与实践[M].长沙:中南工业大学出版社,1992 |
| [4] | 郑永兴,文书明,刘健,邓永帅.难处理氧化铜矿强化浸出的研究概况[J].矿产综合利用,2011(02):33-36,40. |
| [5] | 全宏东.矿物化学处理[M].北京:冶金工业出版社,1984:133-136. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%