The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1990
Filed:
Jun. 18, 1987
Applicant:
Inventors:
Assignee:
Compagnie Generale des Matieres Nucleaires, Velizy-Villacoublay, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423 15 ; 423 11 ; 423 16 ;
Abstract
The invention has as its object a process for the purification of a uranium solution which is contaminated by zirconium. This process consists of bringing the pH of the solution to a value of 1 to 3, then adjusting the pH of the said solution to, and maintaining it at a value of 2.5 to 3 while raising the temperature to a value of around 30.degree. to around 60.degree. C. for a period sufficiently long that there occurs a selective precipitation of at least 70% of the zirconium while the uranium remains in the dissolved state.