Selective separation and recovery of iron and tin from high calcium type tin- and iron-bearing tailings using magnetizing roasting followed by magnetic separation

作者: Zijian Su , Yuanbo Zhang , Jun Chen , Bingbing Liu , Guanghui Li

DOI: 10.1080/01496395.2016.1178292

关键词: Magnetic separationChemistryNuclear chemistryAnthraciteScanning electron microscopeMetallurgyTailingsRoastingTinGrindingPowder diffraction

摘要: In this study, a process of magnetizing roasting followed by magnetic separation, which is used to separate or recover tin and iron from the high calcium type tin-and iron-bearing tailings (containing 35.53 wt.% Fe and 0.56 wt.% Sn), was investigated. A magnetic concentrate containing 66.3 wt.% Fe and 0.07 wt.% Sn with an iron recovery rate of 92.9 wt.% was obtained under optimal conditions: anthracite ratio of 2.5: 100, roasting temperature of 850° C, roasting time of 30 min, grinding time of 10 min, and magnetic field …

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