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:
Nov. 23, 1999
Filed:
Mar. 18, 1996
Applicant:
Inventors:
Vladimir M Zolotoochin, The Woodlands, TX (US);
James D Phillip, Green River, WY (US);
David S Luzmoor, Green River, WY (US);
Assignee:
Solvay Minerals, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C01D / ;
U.S. Cl.
CPC ...
4232062 ; 423427 ;
Abstract
A process for recovery of alkali values from trona in which trona is dissolved, the sodium carbonate in the feed solution is converted to sodium bicarbonate by introducing carbon dioxide, sodium bicarbonate is crystallized and separated from a mother liquor, and sodium bicarbonate in the mother liquor is converted to sodium carbonate by introducing air to form a recirculating dissolving solution which is used to dissolve the trona.