用还原焙烧法从硫铁矿烧渣中提取铁的研究%INVESTIGATION OF EXTRACTING IRON FROM PYRITE CINDER BY REDUCTIVE ROASTING
福建师范大学化学系,福建福州,350007 河南省科学院,河南郑州,450008 福建闽侯榕酸化工有限公司,福建福州,350102
2003-12-24
硫铁矿烧渣 还原焙烧 提取铁
研究了高温还原焙烧、硫酸浸取提取硫铁矿烧渣中的铁.用碳作还原剂,800℃以上温度、反应时间约20MIN时铁的提取率达90%以上,得到的还原渣可以在温和条件下浸出.得到的FESO4提取液不需再经还原,便于净化,适于作透明氧化铁颜料、磁性铁氧体等高档用品的原料.%The extracting iron from pyrite cinder by reductive roasting and sulfuric acid leaching was investigated. The result shows that the iron recovery is high (>90%) with charcoal reductant in about 20 min reaction time above 800℃, and leaching conditions for iron recovery from roasted product are temperate. The FeSO\-4 solution from roasted product is suitable for preparing transparent ferric oxide pigment, magnetic recording materials and so on. ?
