从含砷金精矿二段焙烧酸浸渣中氰化浸出金银的试验研究

An experimental research on extracting gold and silver from acid leaching residue of gold concentrate containing arsenic after two stages of roasting

进行了从含砷金精矿二段焙烧酸浸渣中氰化浸出金银的工艺试验研究。研究表明,采用RMD对含砷金精矿的二段焙烧酸浸渣进行预处理,可除去大部分砷和部分铅,使金、银的氰化浸出率比常规工艺分别提高4.51%和51.30%,其经济效益显著。

A new technique for extracting gold and silver from acid leaching residue of gold concentrate containing arsenic after two stages of roasting is put forward in this paper. It is revealed that after pretreatment with RMD, most arsenic and a part of lead can be eliminated, and the extraction rate of gold and silver can be raised by 4.15% and 51.3%.