焙烧工艺对磁选提纯氧化铁的影响  

Influence of roasting condition on purification of iron oxide by magnetic separation

作　　者：孙孝武[1] 王兴庆[1] 汤小泉[1] 舒淑奇 

机构地区：[1]上海大学材料科学与工程学院,上海200444

出　　处：《上海大学学报（自然科学版）》2017年第2期192-200,共9页Journal of Shanghai University:Natural Science Edition

摘　　要：以城市生活垃圾焚烧炉渣中的废铁表层氧化铁鳞为原料,通过粉碎-焙烧和磁选工艺提纯,制取工业合格的氧化铁原料,并研究了焙烧、磁场强度、粉末粒度等试验条件对磁选效果的影响.结果表明,在还原温度为750?C、还原时间为60 min、木炭质量配比为7%,磁场强度为0.10和0.08 T的条件下进行二次磁选,可以获得品位67.61%、铁回收率85.17%的氧化铁精粉.Scale on the surface of iron in incinerated municipal solid waste scrap as raw materials was purified by roast magnetic beneficiation to produce iron oxide up to industry standard. The effects of reduction roasting, magnetic field strength, particle size and other test conditions on magnetic beneficiation were researched. The results show that magnetite powder with TFe content of 67.61% and 85.17% iron recovery can be obtained by secondary magnetic separation under the conditions of reduction temperature of 750℃, reduction time of 60 min, charcoal ratio of 7% and magnetic field strength of 0.10 and 0.08 T, respectively.

关 键 词：还原焙烧 磁选 废铁回收 

分 类 号：TF046[冶金工程—冶金物理化学] TD924.1[矿业工程—选矿]