某含砷金精矿酸化预处理焙烧——氰化提金试验研究  

Experimental study on acidification pretreatment roasting of arsenic-containing gold concentrate-cyanide extraction gold

作　　者：王天星 王敏杰 欧海涛 郭建东 WANG Tian-xing;WANG Min-jie;OU Hai-tao;GUO Jian-dong(Shandong Guoda gold Co.,Ltd,Zhaoyuan 265406,China)

机构地区：[1]山东国大黄金股份有限公司,山东招远265406

出　　处：《世界有色金属》2020年第11期9-10,共2页World Nonferrous Metals

摘　　要：甘肃某含砷金精矿采用常规焙烧——氰化提金工艺,金浸出率78.5%,通过对该矿进行磨矿、酸化预处理、二级焙烧、氰化提金工艺试验。结果表明,在磨矿细度-0.038mm为90%的条件下,硫酸用量50kg/t预处理,560℃、620℃温度条件下二级焙烧,焙砂氰化提金,金浸出率达到92.8%,实现了该金精矿中金的回收。An arsenic-bearing gold concentrate in Gansu adopts conventional roasting-cyanide gold extraction process,and gold leaching rate 78.5%,through the ore grinding,acidizing pretreatment,secondary roasting,cyanide gold extraction process test.The results show that under the condition that the grinding fineness-0.038mm is 90%,sulfuric acid is pretreated at 50kg/t,second-stage roasting at 560℃ and 620℃ temperature,cyanide extraction of roasted sand,the gold leaching rate reaches 92.8%,Realized the recovery of gold in the gold concentrate.

关 键 词：酸化预处理 二级焙烧 氰化提金 氰化尾渣 

分 类 号：TF831[冶金工程—有色金属冶金]