摘要
在氰化物提金中,特别是对硫化物成分多、含量高的矿石,预先进行碱浸或适当控制CaO的浓度是必要的。浸出时,氧化钙不仅起保护碱的作用,还能同时抑制Cu^(2+)、Fe^(3+)等离子对氰化物的消耗,并且对矿物微细颗粒起絮凝加速沉降的作用,可以改善氰化过程的工艺条件,提高金的回收率,降低氰化钠的消耗,利于洗涤和置换。
It is necessary to have an alkali leaching in advance or proper controlling of the density of CaO when extracting gold especially from high sulfur-containing gold ores by cyanide process. Calcium oxide is not only capable of protecting alkali, but also able to control the consumption of cyanide resulted from Cu2+, Fe3+, speed up flocculating settling of fine grained minerals, improve technological condition in the course of cyanidation, boost gold reco-very, lower the consumption of sodium cyanide and benefit the washing and replacing
出处
《黄金》
CAS
北大核心
1992年第10期44-48,共5页
Gold
关键词
氰化
金
氧化钙
作用
cyanidation
gold
calcium oxide
function
