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METHOD FOR RECOVERING IRON GROUP ELEMENT AND RARE-EARTH ELEMENT, AND APPARATUS FOR RECOVERING IRON 发明申请

2023-07-20 3840 238K 0

专利信息

申请日期 2025-07-11 申请号 JP2012017276
公开(公告)号 JP2013155411A 公开(公告)日 2013-08-15
公开国别 JP 申请人省市代码 全国
申请人 NAT UNIV YOKOHAMA; DOWA HOLDINGS CO LTD
简介 PROBLEM TO BE SOLVED : To provide a method for recovering iron group elements and rare-earth elements, by which the iron group elements and the rare-earth element are selectively separated and recovered, and to provide an apparatus for recovering the iron group elements and the rare-earth elements, which can be used in the recovery method.SOLUTION : A method for recovering iron group elements and rare-earth elements includes : a process A1 comprising immersing a member M1 containing iron group elements and rare-earth elements into a first aqueous solution 12 and then performing an acid dissolution treatment; a process A2 comprising immersing a member M2 passing through the process A1 into a second aqueous solution 15 and then performing a metal salt synthesis treatment; a process A3 comprising immersing a member M3 passing through the process A2 into a choline-like ionic liquid 23 and recovering the iron group elements from the choline-like ionic liquid 23 by using an electrolytic deposition method; and a process A4 for recovering the rare-earth elements from the choline-like ionic liquid 23 passing through the process A3 by using an electrolytic deposition method. The method uses, as the choline-like ionic liquid 23, a choline-like ionic liquid containing choline being a naturally derived compound or an aliphatic quaternary ammonium cation composed of a choline derivative.


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