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:
Apr. 12, 1977
Filed:
Dec. 30, 1974
Bernard Batoux, Saint-Marcel, FR;
Albert Laurent-Atthalin, Annecy, FR;
Michel Salmon, Saint-Marcel, FR;
Metaux Speciaux S.A., Paris, FR;
Abstract
The invention relates to a purification process by which sodium of extremely high purity, more especially with a low calcium content, can be obtained from commercial-grade sodium. The process according to the invention essentially comprises continuously introducing a predetermined quantity of sodium peroxide into a stream of sodium, mixing and subsequently reacting this sodium peroxide with the sodium at a suitable temperature and finally separating the products of the reaction from the sodium by decantation and filtration. The extremely high-purity sodium thus obtained satisfies in particular the requirements of the atomic industry for its use as a heat-carrying fluid in nuclear reactors of the 'breeder' type.