Title:
レニウムと砒素の分離方法、並びにレニウムの精製方法
Document Type and Number:
Japanese Patent JP5382269
Kind Code:
B1
Abstract:
The present invention aims at separating and removing arsenic, which is an impurity, in a stable form from a raw material containing rhenium and arsenic, and reducing a circulation amount of arsenic in a rhenium purification process thereby to obtain rhenium with a low-content arsenic. The present invention provides a method for separating rhenium from arsenic in a rhenium purification process, the rhenium purification process being such that a raw material containing rhenium and arsenic is oxidized and leached, and separated into a leachate containing perrhenic acid, arsenic acid, and arsenous acid and a leaching residue containing arsenate, followed by purification of rhenium from said leachate, wherein an alkali 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 the obtained arsenic-containing precipitate and the leaching residue containing arsenate thereby to obtain an arsenic-containing solution and a hydroxide precipitate, and arsenic in the obtained arsenic-containing solution is fixed as a precipitate.
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Inventors:
Satoshi Asano
Naoki Kubota
Kazunori Takeda
Shintaro Komori
Naoki Kubota
Kazunori Takeda
Shintaro Komori
Application Number:
JP2013527408A
Publication Date:
January 08, 2014
Filing Date:
February 15, 2013
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B61/00; C22B3/04; C22B3/44; C22B30/04
Domestic Patent References:
| JP2011058016A | 2011-03-24 | |||
| JPH0770665A | 1995-03-14 | |||
| JP2010077499A | 2010-04-08 | |||
| JP2009242935A | 2009-10-22 |
Attorney, Agent or Firm:
Akira Koike
Seiji Iga
Toshiya Fujii
Yusei Atsuya
Seiji Iga
Toshiya Fujii
Yusei Atsuya