摘要
某地含 Ag900—1000g/t Au27g/t 的粗铅,经真空炉连续三次蒸馏和一次间断蒸馏,可使残留物中含 Ag 达75%,含 Au 达2.4%.
Crude lead in some places contains silver 900-1000 grams and gold,22-27 grams a ton. If we distil this kind of lead three times continuously and once interruptedly in the vacuum furnace,the residual alloy in which 75% of it is silver and 2.4% of it is gold will be pro- duced.
关键词
真空蒸馏
粗铅
金
银
富集
vacuum distillation
crude lead
silver
gold
concentration
