金精矿氰化尾渣综合回收金硫工艺试验研究  

Experimental study on the comprehensive recovery of sulfur and gold from gold concentrate cyanidation tailings

作　　者：郭建东 孙一清 陈顺勋 商振华 Guo Jiandong;Sun Yiqing;Chen Shunxun;Shang Zhenhua(Shandong Guoda Gold Co.,Ltd.;No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources)

机构地区：[1]山东国大黄金股份有限公司 [2]山东省地质矿产勘查开发局第六地质大队

出　　处：《黄金》2023年第6期51-54,共4页Gold

摘　　要：某黄金冶炼厂金精矿采用直接氰化提金工艺处理,产出的氰化尾渣用作硫酸生产原料,硫元素得到利用,但其中的金没有得到回收,造成资源浪费。试验采用氰化尾渣脱氰、浮选工艺回收金、硫,结果表明:在一级加热脱氰,二级酸化深度脱氰,三级活化选硫选金工艺技术条件下,获得的金硫精矿中金、硫品位分别为1.75 g/t、48.60%,金、硫回收率分别达到81.50%、96.50%,实现了金精矿氰化尾渣中有价元素金、硫的综合回收。A gold smelting plant uses a direct cyanide leaching process to process gold concentrates,and the resulting cyanide tailings are used as raw materials for sulfuric acid production,with the sulfur element being utilized.However,the gold in the tailings is not recovered,leading to a waste of resources.The experiment recovers gold and sulfur by cyanide tailings decyanation and flotation process.The results show that under the technical conditions of first-stage tailings decyanation by heating,second-stage acidification for deep decyanation,and third-stage activation for sulfur and gold extraction,the obtained concentrate has Au and S grades of 1.75 g/t and 48.60%,respectively.The recovery rates of Au and S are 81.50%and 96.50%,respectively,achieving the comprehensive recovery of the valuable elements of Au and S in the cyanide tailings from the gold concentrate cyanide leaching process.

关 键 词：氰化尾渣 预处理 加热脱氰 浮选 综合回收 

分 类 号：TD926.4[矿业工程—选矿]