Method for separating rhenium and arsenic, and met

专利名称：Method for separating rhenium and arsenic,

and method for purification of rhenium

发明人：Satoshi Asano,Naoki Kubota,Kazunori

Takeda,Shintarou Komori

申请号：US14368468申请日：20130215公开号：US056583B2公开日：20150217

专利附图：

摘要：The present invention aims at separating and removing arsenic in a stable formfrom raw material containing rhenium and arsenic, and reducing a circulation amount of

arsenic in a rhenium purification process to obtain rhenium with low-content arsenic. Amethod for separating rhenium from arsenic in a rhenium purification process, whereinthe raw material containing rhenium and arsenic is oxidized and leached, and separatedinto a leachate containing perrhenic, arsenic, and arsenous acids and a leaching residuecontaining arsenate, followed by purification of rhenium from the leachate, wherein analkali is added to the leachate to obtain an arsenic-containing precipitate and a rhenium-containing solution, rhenium is separated from the obtained rhenium-containing solution,an alkali is added to either or both obtained arsenic-containing precipitate and theleaching residue containing arsenate to obtain an arsenic-containing solution and ahydroxide precipitate, and arsenic in the obtained arsenic-containing solution is fixed as aprecipitate.

申请人：Sumitomo Metal Mining Co., Ltd.

地址：Tokyo JP

国籍：JP

代理机构：Oliff PLC

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