某铜钴矿提高低铜萃取率试验研究及生产实践  

xperimental Research and Production Practice of Increasing Copper Extraction Rate of Low Copper Content Solution of a Copper-cobalt Mine

作　　者：王振银 张志兵 李贺 沈金灵 李相良 梁新星 WANG Zhen-yin;ZHANG Zhi-bing;LI He;SHEN Jin-ling;LI Xiang-liang;LIANG Xin-xing(Norin Mining Ltd.,Beijing 100053,China)

机构地区：[1]北方矿业有限责任公司,北京100053

出　　处：《有色矿冶》2024年第6期31-33,30,共4页Non-Ferrous Mining and Metallurgy

摘　　要：某铜钴矿湿法冶金生产中的低铜萃余液作为除铁沉钴的原料,若低铜萃取率较低将会造成较多萃余液中的铜损失到铁渣和钴盐产品,因此需提高低铜萃取率避免铜的损失。针对提高某铜钴矿萃取工序的低铜萃取率,分别开展了高铜料液、低铜料液和反萃液性质影响试验研究,结果表明不同料液性质均对低铜萃取率有影响,高低铜料液硫酸含量越高、反萃液铜浓度越高越不利于低铜萃取,而反萃液酸度越高越利于低铜萃取。实际生产中根据试验结果采取了一系列调整措施,使得低铜萃取率由95.07%提升至97%以上,低铜萃余液铜含量由0.26 g/L降至0.12 g/L以下,经济效益显著。The low copper content raffinate in the hydrometallurgical production of a copper-cobalt mine is used as a raw material for iron removal and cobalt precipitation.If the solvent extraction rate of low copper content solution is low,the copper in the raffinate will be lost to iron slag and cobalt salt products.Therefore,it is necessary to increase the solvent extraction rate to avoid copper loss.In order to improve the copper extraction rate of low copper content solution,the effects of properties of high copper content solution,low copper content solution and stripping solution were studied.The results shows that the higher sulfuric acid content of the copper solution and higher copper concentration of the stripping solution is more unfavorable for low copper content solution extraction.While the higher acidity of the stripping liquid is more conducive to low copper content solution extraction.In actual production,a series of adjustment measures were adopted based on the test results,which increased the low copper content solution extraction rate from 95.07%to more than 97%,and the copper content of the raffinate solution dropped from 0.26 g/L to below 0.12 g/L,and the economic benefits were significant.

关 键 词：海外矿产 铜钴矿 低铜萃取 湿法冶金 

分 类 号：TF811[冶金工程—有色金属冶金]