广西某难处理金精矿氧化焙烧-氰化提金试验研究

针对广西某难处理金精矿,采用添加碳酸钠氧化焙烧—氰化提金工艺进行了试验研究。结果表明,焙砂中固硫率达85%、固砷率达95%、有机碳气化率为98%。焙砂再经氰化浸出,可使金浸出率达98%以上。为该类型高砷高碳金精矿提金提供了一条有效的利用途径。

Experimental Research on Recovery of Gold from a Refractory Gold Concentrate

Aimed at the difficult-to-treat characteristic of a Guangxi′s gold concentrate,an experimental research is performed by using oxidizing roast-cyanide leaching technology.The results obtained indicated that the rate of sulfur-fixed in the calcine is up to 85%,the fixing arsenic rate is up to 95%,and the vaporization ratio of organic carbon is 98%.The cyanide leaching rate of gold can reach 98%.This technological process could provide an effective route for rational utilization of this kind of gold concentrate containing high As and C contents.