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, 1989
Filed:
Dec. 18, 1987
Applicant:
Inventor:
Harry E Gardner, Grand Junction, CO (US);
Assignee:
U.S. Vanadium Corporation, Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C01G / ;
U.S. Cl.
CPC ...
423 65 ; 423 66 ; 423 67 ; 423 68 ; 423146 ; 423145 ; 423140 ; 423150 ; 75 24 ; 75 25 ; 75 63 ; 7510 / ; 75119 ; 75112 ;
Abstract
A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source, such as sodium sulfate or sodium carbonate, and then roasted in an oxygen-containing gas until carbon is removed and a fused mixture is obtained. Thereafter, the vanadium is leached from the mixture with an aqueous solution, and nickel is contained in solids remaining from the leaching.