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:
May. 10, 1977
Filed:
Dec. 10, 1975
Paul Demilie, Brussels, BE;
Solvay & Cie, Brussels, BE;
Abstract
Process for the fabrication of boric acid by carboammoniac attack of a borate mineral, involving subjecting a borosodium ore, in its natural state or previously refined, and in a finely ground condition, to a treatment in an aqueous medium with carbonic anhydride and ammonia in a manner to precipitate sodium bicarbonate which is separated. The remaining mother liquor is cooled to obtain crystals of ammonium borate which are separated, redissolved, the obtained solution being decomposed by thermal means in order to form ammonia which is recycled to the ore treatment and a boric acid solution from which the acid is separated by crystallization. This process permits obtaining two valuable products: NaHCO.sub.3 and H.sub.3 BO.sub.3. When the ore is preliminarily refined, more effective utilization can be made of the ammonia.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile