云南某氧化铜矿氨浸液萃取工艺  

Copper Extraction Technology from Ammonia Leaching Solution of Oxidized Ore in Yunnan

作　　者：马彩雯[1] 周庆华[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《有色金属（冶炼部分）》2011年第7期3-5,11,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：以云南某氧化铜矿的氨浸液作为萃取原液,研究萃取-洗涤-反萃过程。用McCabe-Thiele等温线法,推算二级萃取和一级反萃过程中各产物含铜浓度的变化。采用分流萃取的工艺,可以避免返回使用的萃余液被稀释。对含氨量测定表明,氨浸-萃取体系的氨挥发量和水膨胀均可控制。With the ammoniac leaching solution of copper oxidized ore in Yunnan as the pregnant solution,the process of the extraction-washing-stripping is investigated.The value changes of copper content in every product of two-stages extraction and one-stage strip are calculated by using the method of McCabe-Thiele Isotherm.With the technology of split-circuit extraction,the diluting of the returned raffinate can be avoided.Through the determination of ammonia content,it is proved that the volatile matter content of the ammonia and the water-expansion can be controlled.

关 键 词：冶金技术 氧化铜矿 溶剂萃取 氨浸液 McCabe-Thiele等温线 分流萃取 

分 类 号：TF811[冶金工程—有色金属冶金] TF804.2