从铜熔炼渣中回收铁的研究  

Study on Reclamation of Fe from Flotation Tailings of Copper Slag

作　　者：占寿罡[1] 葛贤发[1] 徐磊[1] 

机构地区：[1]铜陵有色设计研究院,安徽铜陵244000

出　　处：《上海有色金属》2015年第3期100-103,共4页Shanghai Nonferrous Metals

摘　　要：模拟链篦机-回转窑工艺直接还原磁选回收铜渣尾矿中的铁,试验研究了碱度、预热温度、预热时间、还原温度、还原时间及煤矿比等因素对铁精矿质量的影响.结果表明:碱度为0.3,预热温度为1 000℃,预热时间为9 min,还原温度为1 200℃,还原时间为70 min,煤矿比为2∶1,焙烧矿球磨时间为20 min(小于0.074 mm,占95%左右)以及磁场强度为0.08 T的条件下,铁品位及回收率均达到90%以上.The iron was recovered from the copper slag by means of direct reduction and magnetic process of the analog grate-kiln. The experiment studied the effects of alkalinity, preheating temperature, preheating time, reduction temperature, reduction time and coal ratio on the quality of iron ore. Results show that the iron grade and recovery rate reach 90% when the alkalinity is 0.3, the preheating temperature is 1000℃, preheating time is 9 rain,the reduction temperature is 1 200 ℃, reduction time is 70 min, coal ratio is 2：1, roasted ore milling time is 20 rain （less than 0. 074 mm, accounting for about 95%）, and magnetic field strength is 0.08 T.

关 键 词：链篦机-回转窑 铜渣 铁 直接还原 磁选 

分 类 号：X758[环境科学与工程—环境工程] TF56[冶金工程—钢铁冶金]