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:
Aug. 25, 2009
Filed:
Sep. 07, 2004
Remi Jacques, Aubervilliers, FR;
Pierre Jeanvoine, Courbevoie, FR;
Biagio Palmieri, Aubervilliers, FR;
Melanie Rattier, Paris, FR;
Remi Jacques, Aubervilliers, FR;
Pierre Jeanvoine, Courbevoie, FR;
Biagio Palmieri, Aubervilliers, FR;
Melanie Rattier, Paris, FR;
Saint-Gobain Glass France, Courbevoie, FR;
Abstract
The invention relates to a process for preparing a silicate of an element chosen from alkali metals, alkaline-earth metals or rare earths, comprising a reaction between silica and a sulfate of said element in a reactor equipped with at least one submerged burner within a molten mass, said submerged burner being fed with a gas containing oxygen, an excess of fuel/reducing agent being introduced into the reactor relative to the oxygen effectively consumed. The process allows the reaction to be carried out satisfactorily and at relatively low temperature.