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. 13, 1980
Filed:
Aug. 16, 1978
Edward H Conroy, Green River, WY (US);
Arthur Gloster, New York, NY (US);
James A King, Green River, WY (US);
Texasgulf Inc., Stamford, CT (US);
Abstract
An improved process for the production of soda ash from trona including the steps of sizing the trona, heating the trona to eliminate water and carbon dioxide therefrom, dissolving the trona in an aqueous medium to obtain a solution thereof, removing insoluble solid materials from the solution, crystallizing sodium carbonate monohydrate from the solution, and heating the crystallized sodium carbonate monohydrate to produce soda ash. The improvement of the invention comprises the step of removing insoluble solid materials from the solution of trona by classifying the insoluble solid materials in a plurality of hydroclones.