川北高砷高碳微细粒难处理金矿石焙烧工艺研究  

Research on the roasting process of micro-fine grain refractory gold ore with high arsenic and high carbon content in North Sichuan

作　　者：曹欣 雷力[1] 王智伟 杨劲松[1] 袁源 Cao Xin;Lei Li;Wang Zhiwei;Yang Jinsong;Yuan Yuan(Sichuan Institute of Metallurgical Geology&Exploration)

机构地区：[1]四川省冶金地质勘查院,成都市郫都区611743

出　　处：《黄金》2021年第5期52-55,共4页Gold

基　　金：四川省国土资源厅科技项目(KJ-2011-17)。

摘　　要：针对川北平武县胡家沟高砷高碳微细粒金矿石性质,在探索试验基础上,进行了固化焙烧—氰化浸出工艺研究。结果表明:在第一段焙烧温度510℃、焙烧时间60 min,第二段焙烧温度710℃、焙烧时间90 min的最佳条件下进行两段焙烧,砷固定率为98.65%、硫固定率为97.32%;焙砂磨矿擦洗后氰化浸出,金浸出率达到88.96%。研究结果为川北同类型难处理金矿石的开发利用提供了技术依据。According to the ore properties of micro-fine grain gold ore with high arsenic and high carbon content at Hujiagou,Pingwu County,North Sichuan,on the basis of exploration experiment,the solidification roasting-cyanide leaching process was studied.The results show that two-stage roasting was carried out under optimal conditions that the roasting temperature is 510℃and the roasting time is 60 min in the first stage,the roasting temperature is 710℃and the roasting time is 90 min in the second stage.The arsenic solidification rate was 98.65%,and the sulfur solidification rate was 97.32%;the roasted residue is ground and scrubbed before going to cyanide leaching,and the gold leach-ing rate is 88.96%.The research results provide a technical basis for the development of similar refractory gold ores in North Sichuan.

关 键 词：难处理金矿 固化焙烧 砷 碳 微细粒 两段焙烧 氰化 

分 类 号：TD953[矿业工程—选矿]