Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 29, 2008
Patent Application Number
10727413
Date Filed
December 4, 2003
Patent Primary Examiner
Patent 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+H2SO4+½O2→NiSO4+H2OThe 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.
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