汤丹高碱性脉石难选氧化铜矿的试验研究和工业实践

STUDY ON TREATMENT OF TANGDAN REFRACTORY COPPER OXIDE ORE WITH HIGH CONTENT OF ALKALI GANGUES

云南汤丹铜矿含铜品位低(平均含Cu0 64%)、氧化率高(>70%)、碱性脉石含量高(CaO+MgO>40%),而且嵌布粒度很细,给矿石加工处理带来很大困难。通过"九五"科技攻关,在试验研究的基础上建成了一座年产500t阴极铜的试验工厂,1997年底投产。本文叙述了采用氨浸—萃取—电积工艺处理汤丹高碱性脉石氧化铜矿的工艺流程和关键技术,重点叙述了试验工厂的操作和主要技术经济指标。

The ore from Tangdan copper mine in Yunnan has low copper grade(average Cu 064%),high oxidation ratio(>70%),high content of alkali gangues(CaO+MgO>40%)and fine size of dissemination,so it is difficult in processingBase on research and experiment,a pilot plant with an annual output of 500t cathode copper went into operation in 1997This paper presents the technological flowsheet and key techniques of which the copper oxide ore is treated by use of ammonia leachingextractionelectrowinning process,particularly the operations and main technoeconomical indexes of the pilot plant