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%.

• 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%25和51