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:
Mar. 28, 1995
Filed:
Jan. 12, 1994
David W Cawlfield, Cleveland, TN (US);
Leslie R Ward, Cleveland, TN (US);
Olin Corporation, Stamford, CT (US);
Abstract
A process for producing manganese dioxide comprising the steps of: (1) reacting manganese oxide with a molar excess of an aqueous chloric acid solution in a reaction zone to form a reaction mixture in said zone comprising chlorine gas, a solid phase containing manganese dioxide, and a liquid phase containing chloric acid and water; the concentration of chloric acid in said liquid phase is greater than about 5% by weight of said liquid phase upon leaving the reaction zone; (2) separating said chlorine gas from said solid phase and said liquid phase; (3) separating said solid phase containing manganese dioxide from liquid phase containing chloric acid and water; (4) removing water from said separated liquid phase to concentrate said chloric acid in said separated liquid phase; and (5) returning said separated and concentrated liquid phase back to said reaction zone for further reaction with manganese oxide.