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:
Jun. 18, 1985
Filed:
Aug. 31, 1983
Applicant:
Inventor:
Song-P Sit, Calgary, CA;
Assignee:
Zimpro Inc., Rothschild, WI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ; C01G / ;
U.S. Cl.
CPC ...
423 65 ; 423 68 ; 423140 ; 423146 ; 423150 ; 423545 ; 7510 / ; 75108 ; 75115 ; 75119 ; 75121 ;
Abstract
Vanadium and nickel are recovered from fluid coke or fly ash concurrently with cogeneration of steam by a wet oxidation process at 500.degree.-650.degree. F. and elevated pressure, with a leaching pH of approximately 0.3 maintained by generation of sulfuric acid in situ. Vanadium products are precipitated by oxidation with for example sodium perchlorate with concurrent or subsequent pH adjustment to about pH 2. Following separation of the vanadium pentoxide, nickel powder is preferentially recovered by reduction with hydrogen and ammonia. Steam is generated by recovery of the thermal energy present in the offgases.