Title:
金属含有物質から金属を回収する方法およびシステム
Document Type and Number:
Japanese Patent JP2008533442
Kind Code:
A
Abstract:
Embodiments of a method and a system for recovering a metal, such as uranium, from a metal-containing material are disclosed. The metal-containing material is exposed to an extractant containing a liquid or supercritical-fluid solvent and an acid-base complex including an oxidizing agent and a complexing agent. Batches of the metal-containing material are moved through a series of stations while the extractant is moved through the stations in the opposite direction. After the extraction step, the metal is separated from the solvent, the complexing agent and/or other metals by exposing the extract to a stripping agent in a countercurrent stripping column. The complexing agent and the solvent exit the column and are separated from each other by reducing the pressure. The recovered complexing agent is recharged with fresh oxidizing agent and recombined with fresh or recovered solvent to form a recovered extractant, which is distributed through the extraction stations.
Inventors:
Yi Chen M.
Kogler Sydney S.
Kogler Sydney S.
Application Number:
JP2007555101A
Publication Date:
August 21, 2008
Filing Date:
January 12, 2006
Export Citation:
Assignee:
Idaho Research Foundation, Inc.
Areva NP Inc.
Areva NP Inc.
International Classes:
G21C19/46; B01D11/00; C22B3/26; C22B7/02; C22B59/00; C22B60/02; C22B60/04
Domestic Patent References:
| JP2004036000A | 2004-02-05 |
Other References:
JPN7012005212; 化学工学協会編: 「化学工学便覧」 改定五版, 19880318, 第５５６-５６１頁, 丸善株式会社
JPN6011046579; 森行秀: '「［４］Ｓｕｐｅｒ-ＤＩＲＥＸ再処理法による使用済燃料からのＵ，Ｐｕ直接抽出に関する技術開発」' 原子力ｅｙｅ ４９巻１０号, 20031001, ２１-２５頁, 日刊工業出版プロダクション
JPN6011046580; 島田隆 他４名: '「Ｓｕｐｅｒ-ＤＩＲＥＸ再処理法による使用済燃料からのＵ，Ｐｕ直接抽出に関する技術開発（７）-向流接' 日本原子力学会２００３年秋の大会予稿集 第３分冊, 20030807, ５３３頁, 社団法人日本原子力学会
JPN6011046579; 森行秀: '「［４］Ｓｕｐｅｒ-ＤＩＲＥＸ再処理法による使用済燃料からのＵ，Ｐｕ直接抽出に関する技術開発」' 原子力ｅｙｅ ４９巻１０号, 20031001, ２１-２５頁, 日刊工業出版プロダクション
JPN6011046580; 島田隆 他４名: '「Ｓｕｐｅｒ-ＤＩＲＥＸ再処理法による使用済燃料からのＵ，Ｐｕ直接抽出に関する技術開発（７）-向流接' 日本原子力学会２００３年秋の大会予稿集 第３分冊, 20030807, ５３３頁, 社団法人日本原子力学会
Attorney, Agent or Firm:
Hatsushi Shimizu
Koichi Niimi
Koichi Niimi