The extracting iron from pyrite cinder by reductive roasting and sulfuric acid leaching was investigated.
研究了高温还原焙烧、硫酸浸取提取硫铁矿烧渣中的铁。
2
Different metals are separated from the electroplating sludge by roasting and copper, nickel and chromium were recovered with suitable methods such as removing iron by sodium jarosite precipitation.