Removal of Rare Earth Elements from Scrap Using Iron-and Steelmaking Processes

摘要：

　　The possibility of efficient recovery of rare earth metals along with other rare metals using conventional ironmaking(reduction)and steelmaking(oxidation)processes was examined thermodynamically and experimentally.It was clarified that rare earth elements can be easily transferred to liquid metal(molten pig iron)in a reduction stage,and to slag in an oxidation stage.Rare earth elements were concentrated in specific mineral phases during the cooling and solidification of the slag.It was found that the separation of the mineral phases containing higher contents of rare earth elements from other mineral phases was a key-point in order to obtain a higher quality ore substitute.

关键词： removal rare earth metal scrap reduction oxidation slag,phase separation resource strategy

作者: Nao KASAI Yasushi TAKASAKI Atsushi SHIBAYAMA Ryo INOUE

作者单位: Graduate School of Engineering and Resource Science,Akita University,Akita 010-8502,Japan Faculty of International Resource Sciences,Akita University,Akita 010-8502,Japan

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 970-971

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）