刚果(金)绿纱铜钴矿湿法冶金工艺优化  

Hydrometallurgical process optimization of the Luishia Cu-Co project,DRC

作　　者：吴免利 王亚雷 高帮飞 WU Mian-li;WANG Ya-lei;GAO Bang-fei(China Railway Resources Co.,Ltd.,Beijing 100039,China;La compagnie miniere de Luishia,SAS.,DR Congo)

机构地区：[1]中铁资源集团有限公司,北京100039 [2]绿纱矿业股份有限公司,刚果(金)

出　　处：《世界有色金属》2024年第10期10-12,共3页World Nonferrous Metals

基　　金：中铁资源集团有限公司科技重大课题(编号2023-重大-01)资助。

摘　　要：绿纱铜钴矿位于刚果(金)上加丹加省卢本巴西市西北方向约70km。绿纱铜钴矿床以硫化矿为主,近地表有部分氧化矿。设计采用氧化矿和硫化矿混合浮选后沸腾焙烧,焙砂进入浸出-萃取-电积生产阴极铜,萃余液中和生产氢氧化钴的湿法冶金工序。实践表明,采用混合浮选影响铜钴的综合回收,且设备产能无法充分发挥。改造后,采用氧化矿直接浸出,硫化矿浮选-焙烧后进入湿法系统的方案,铜综合回收率大幅提升,且产能由2.5万吨/年,增加到3.5万吨/年。The Luishia Cu-Co project is located approximately 70km northwest of Lubumbashi City,Haunt Katanga Province,DRC.The Luishia Cu-Co deposit is dominated by sulfide ores with some oxidized ores near the surface.The design adopts the hydrometallurgical process of mixed flotation of both oxidized and sulfide ore,after concentrate fluidized bed roasting,the calcine sent into L-SX-EW to produce cathode copper,and the raffinate neutralization to precipitating cobalt hydroxide.The practice shows that the use of mixed flotation affects the comprehensive recovery of copper and cobalt,and the capacity of the plant cannot be fully used.After the improvements,the oxidized ores leached directly,combined with roasting sulfide concentrate,enters into the hydrometallurgical program.The comprehensive recovery rate of copper was greatly improved,and the copper production capacity increased from 25,000 tpa to 35,000 tpa.

关 键 词：赞比亚-刚果(金)铜矿带 铜钴矿床 氧化矿 硫化矿 湿法冶金 工艺优化 

分 类 号：TF111.3[冶金工程—冶金物理化学]