高品位氧化铜矿熔炼渣型优化实验研究  

Experimental study on optimization of smelting slag type of high grade copper oxide ore

作　　者：李强 秦树辰 郑朝振 刘三平 郜伟 LI Qiang;QIN Shu-chen;ZHENG Chao-zhen;LIU San-ping;GAO Wei(BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]矿冶科技集团有限公司,北京100160

出　　处：《矿冶》2021年第4期79-84,共6页Mining And Metallurgy

基　　金：国家重点研发计划项目(2018YFC1903303);青海省重大科技专项(2018-GX-A7)。

摘　　要：针对非洲某高品位氧化铜矿开展渣型优化实验研究,主要开展了氧化钙加入量、氧化亚铁加入量、焦率和精矿含水等实验研究。结果表明,矿石中的铜赋存在孔雀石中,在焦比5%、熔炼温度1400℃、还原熔炼时间2 h、CaO∶SiO_(2)=0.4∶1、FeO∶SiO_(2)=0.1时,铜和钴回收率分别为99%和98%,熔渣含铜和钴分别为0.3%和0.01%;适量添加氧化亚铁造渣,能降低氧化钙的加入量,过低的氧化钙加入量会导致熔炼的流动性变差;熔渣中的铜主要以高冰铜的形式存在,常规浸出方法回收困难。Experimental study on slag type optimization of a high grade oxidized copper ore from Africa.The experimental study was mainly carried out on the amounts of calcium oxide and of ferrous oxide,the coke rate and the water content of the concentrate.The results show that copper exists in malachite.When the coke ratio is 5%,smelting temperature is 1400℃,reducing smelting time is 2 h,CaO∶SiO_(2)=0.4∶1,and FeO∶SiO_(2)=0.1,the recovery rates of copper and cobalt are 99%and 98%,respectively,and the copper and cobalt content of slag are 0.3%and 0.01%,respectively.Appropriate addition of ferrous oxide to make slag can reduce the amount of calcium oxide,too low amount of calcium oxide will lead to poor smelting fluidity.The copper in the slag mainly exists in the form of high matte,which is difficult to be recovered by conventional leaching methods.

关 键 词：氧化铜矿 火法 渣型 铜 

分 类 号：TF811[冶金工程—有色金属冶金]