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:
Apr. 29, 2008
Filed:
Dec. 04, 2003
Cristian Fierro, Northville, MI (US);
Gabriel E. Benet, Angola, IN (US);
Avram Zallen, West Bloomfield, MI (US);
Tim Hicks, Redford, MI (US);
Michael A. Fetcenko, Rochester, MI (US);
Cristian Fierro, Northville, MI (US);
Gabriel E. Benet, Angola, IN (US);
Avram Zallen, West Bloomfield, MI (US);
Tim Hicks, Redford, MI (US);
Michael A. Fetcenko, Rochester, MI (US);
Ovonic Battery Company, Inc., Rochester Hills, MI (US);
Abstract
A preferred embodiment of the present invention provides a process for making nickel sulfate by converting nickel metal into nickel sulfate, which may be converted to nickel hydroxide. Nickel metal is dissolved in sulfuric acid and oxygen containing gas is introduced to produce a nickel sulfate solution having nickel sulfate and water as illustrated in the following chemical equation.Ni+HSO+½O→NiSO+HOThe nickel sulfate is filtered and sulfuric acid is continually added to maintain stoichiometry within a reactor until the nickel metal is dissolved. The sulfuric acid, oxygen containing gas and nickel metal may be heated to facilitate the desired reaction. Then, the nickel sulfate may be utilized to produce nickel hydroxide.