试论控电氯化法在氰化金泥提纯黄金中的应用  

On the application of controlled potential method in the purification of gold from cyanide gold slime

作　　者：姬利红 衡振平 张孔 张建龙 臧建超 JI Li-hong;HENG Zhen-ping;ZHANG Kong;ZHANG Jian-long;ZANG Jian-chao(Zhengzhou Jinquan mining and Metallurgical Equipment Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]郑州金泉矿冶设备有限公司,河南郑州450001

出　　处：《世界有色金属》2022年第21期199-201,共3页World Nonferrous Metals

摘　　要：将氯酸钠添加到盐酸中,可以让氰化金泥中铅、铜、金等元素被氧化,并进入到溶液中,银元素变为氯化银沉积在渣中。通过酸浸除杂,Fe以及Pb脱除率超出90%,Cu投出率保持在60%左右;通过氯盐浸出,金氯化率可以超出99%。通过亚钠还原,海绵金的品位可以超出99.99%,对金粉洗涤烘干铸锭,金锭满足IC-Au99.99标准要求,1#金直收率超出90%。Adding sodium chlorate to hydrochloric acid can oxidize the elements such as lead, copper and gold in cyanide gold mud and enter the solution. The silver element turns into silver chloride and deposits in the slag. By acid leaching,the removal rates of Fe and Pb exceeded 90%, and the Cu release rate remained about 60%;Through chloride leaching, the gold chlorination rate can exceed 99%. Through sodium sulfite reduction, the direct yield of gold exceeds 90%, and the grade of sponge gold can exceed 99.99%. The gold powder is washed and dried to cast ingots, and the gold ingots meet the requirements of ic-au99.99 standard.

关 键 词：控电氯化法 氰化法 黄金提纯 

分 类 号：TD925[矿业工程—选矿]