Iron Resources Selective Beneficiation by Molten Oxidation from Copper Slag

• 作 者: FanYong[1]ShibataEtsuro[2]IizukaAtsushi[2]NakamuraTakashi[2]
• 机 构: Graduate School of Environmental Studies,Tohoku University 6-6-20 Aramaki-Aza-Aoba,Aoba-ku,Sendai,98
• 出 处: 第十届中国钢铁年会暨第六届宝钢学术年会
• 发表日期: 2015年期

　　Iron in copper slag is in the form of iron silicate.We proposed to oxidize the iron silicate to magnetite,allowing the selective recovery of the slags iron content by magnetic separation.This proposal would effectively decrease the volume of dumped slag,and the recovered iron concentrate could be used for the future iron or steel making.The crystallization morphology of magnetite and hematite were studied as reaction products of the molten oxidation of copper slag.A gas atmosphere of 1 vol%of oxygen was found to effectively precipitate the iron in the molten slag as magnetite.