Title:
連続式イオン交換クロマトグラフィーによる硫酸塩溶液中のジルコニウムとハフニウムの分離方法
Document Type and Number:
Japanese Patent JP3966902
Kind Code:
B2
Abstract:
A method and system for improved continuous ion exchange chromatographic elemental separations of zirconium and hafnium and also for isotopic separations thereof from crude zirconium minerals by using zirconium (also containing hafnium) sulfate feedstock solutions, sulfate eluant solutions, anionic exchange resins, and reduced ion exchange column operating temperatures. The method and system of the invention provides sulfate feedstock solutions by completely converting the carbochlorination products of zircon sand to sulfate solutions prior to feeding to the ion exchange chromatographic column. The method and system of the invention is performed in a continuously operating continuous annular chromatograph (CAC). Nuclear grade substantially purified zirconium and hafnium metals are produced.
Inventors:
Charles, Buyers
Sison, warren
Snyder, Thomas, Stephen
Bereskey, richard
Nayak, Umesh
Francis, timothy, lloyd
Sison, warren
Snyder, Thomas, Stephen
Bereskey, richard
Nayak, Umesh
Francis, timothy, lloyd
Application Number:
JP50665397A
Publication Date:
August 29, 2007
Filing Date:
May 29, 1996
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORPORATION
International Classes:
C01G27/00; B01D15/02; C01G27/06; B01D15/08; B01J41/20; C01G25/00; C01G25/06; C22B3/42; C22B34/14; G01N30/02; G01N30/58
Domestic Patent References:
| JP57051129A | ||||
| JP5033072A |
Foreign References:
| GB952927A |
Attorney, Agent or Firm:
Koichiro Kato
Tetsuro Maki
Kimio Kikutani
Tetsuro Maki
Kimio Kikutani