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. 04, 1992
Filed:
Oct. 13, 1989
Applicant:
Inventor:
Leon Ninane, Dombasle-sur-Meurthe, FR;
Assignee:
Solvay & Cie (Societe Anonyme), Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62D / ; B09B / ; E21C / ; C01F / ;
U.S. Cl.
CPC ...
423659 ; 423166 ; 423193 ; 423551 ; 423555 ; 423D / ; 2330 / ; 166275 ; 166306 ; 299-5 ; 405128 ;
Abstract
Process for removing an industrial residue containing sodium sulphate, in which the sodium sulphate in the residue 7 is treated with a calcium salt 12 to precipitate calcium sulphate 13, which is sent to a rock salt deposit 15, from which an aqueous solution of sodium chloride 16 is withdrawn. The process applies to the residues from the desulphurization of fumes by means of sodium bicarbonate.