大型硫铁矿制酸
large-scale sulfuric acid(SA) plant from pyrite raw material
多金属硫铁矿
polymetallic pyrite deposit
改性煤系硫铁矿
modified pyrites in coal gangue
Modified coal-derived Pyrites
高砷硫铁矿
pyrite with high arsenic-containing content
含砷硫铁矿
pyrite containing-arsenic
鸡冠山硫铁矿
Jiguanshan iron sulfide mine