低品位氧化铜原矿槽浸提铜工艺试验研究  

Experimental Study on the Process of Extracting Copper from Low Grade Copper Oxide Ore by Tank

作　　者：李俞良 殷勤生[2] 王宏伟 刘瑛鑫 何乃勇 牛振华 LI Yuliang;YIN Qinsheng;WANG Hongwei;LIU Yingxin;HE Naiyong;NIU Zhenhua(Northwest Research Institute of Mining and Metallurgy,Key Laboratory of New Process for Non-Ferrous Metal Smelting and Rare Metal High Utilization Efficiency in Gansu Province,Baiyin 730900,China;Baiyin Nonferrous Group Co.Ltd.,Baiyin 730900,China)

机构地区：[1]西北矿冶研究院甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室,甘肃白银730900 [2]白银有色集团股份有限公司,甘肃白银730900

出　　处：《甘肃冶金》2024年第3期25-28,共4页Gansu Metallurgy

基　　金：甘肃省科技重大专项-基于白银炼铜法智能化大型侧吹熔池熔炼成套装备研发及产业化(21ZD4GD033)。

摘　　要：试验采用原矿二级破碎-浓酸熟化-槽浸的流程,原矿破碎至粒径为5~10 mm后进行浓硫酸熟化,将熟化矿样直接用于浸出试验,在初始H_(2)SO_(4)浓度为100 g/L,液固比为1.5∶1,常温的条件下浸出24 h,Cu浸出率达到90%,浸出渣经水洗后洗液返回槽浸工序循环使用,Cu浸出率达到93%以上。槽浸浸出液即为CuSO_(4)溶液,可通过常规萃取-电解工艺得到最终产品阴极铜。试验结果表明:采用此工艺流程处理低品位氧化铜矿,Cu回收率达到93%以上。The process flow of secondary crushing of raw ore,concentrated acid curing and tank leaching was adopted in the experiment.After the raw ore is broken to a particle size of 5~10 mm,it is cured with concentrated sulfuric acid.The cured ore sample is directly used in the leaching test.When the initial H_(2)SO_(4)concentration is 100 g/L,the liquid-solid ratio is 1.5∶1,and leaching temperature at normal temperature,the leaching rate of Cu reached 90%after leaching for 24 h.After the leaching residue was washed,the liquid was returned to the tank for recycling,and the leaching rate of Cu reached more than 93%.The bath leaching solution is copper sulfate solution,and the final product cathodic copper can be obtained by conventional extraction-electrolysis process.The experimental results show that the Cu recovery rate of low grade copper oxide treated by this process is more than 93%.

关 键 词：低品位氧化铜原矿 浓酸熟化 槽浸 浸出剂 起始酸度 

分 类 号：TD952.1[矿业工程—选矿]