塔吉克斯坦某含砷金精矿两段焙烧—浸出试验研究  

Experimental study on two-stage roasting-leaching of arsenic-bearing gold concentrate in Tajikistan

作　　者：余鹤雷 王闯 高起鹏 马忠臣 徐耀强 Yu Helei;Wang Chuang;Gao Qipeng;Ma Zhongchen;Xu Yaoqiang(CNMC Shenyang Research Institute of Nonferrous Metals Co.,Ltd.)

机构地区：[1]沈阳有色金属研究院有限公司

出　　处：《黄金》2024年第2期47-50,共4页Gold

摘　　要：塔吉克斯坦某含砷金精矿金品位73.27 g/t、砷品位6.61%、硫品位16.78%,是典型的难处理金精矿,采用直接氰化炭浆工艺处理时,金浸出率仅为88.02%。为提高金浸出率,进行含砷金精矿两段焙烧—浸出试验研究,制得的焙砂使用环保型浸出剂浸出。最终得到浸渣金品位4.32 g/t,金浸出率95.43%的良好指标,金浸出率提高7.41百分点,对处理同类型金矿资源起到指导作用。The arsenic-bearing gold concentrate in Tajikistan has typical characteristics of refractory gold concentrate,with a gold grade of 73.27 g/t,arsenic grade of 6.61%,and sulfur grade of 16.78%.When treated with direct cyanidation CIP process,the gold leaching rate was only 88.02%.In order to improve the gold leaching rate,experimental studies on two-stage roasting-leaching of arsenic-bearing gold concentrate were conducted,and the roasted slag was leached using the environmentally friendly leaching agent.The final results showed a good indicator of the gold grade in the leached residue at 4.32 g/t,with a gold leaching rate of 95.43%.This represents an increase of 7.41 percentage points compared to the direct cyanidation CIP process.The study provides guidance for the processing of similar types of gold ore resources.

关 键 词：金精矿 焙烧 浸出率 环保浸出剂 砷 硫 

分 类 号：TF831[冶金工程—有色金属冶金]