<p>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. <?in-line-formulae description="In-line Formulae" end="lead"?>Ni+H<SUB>2</SUB>SO<SUB>4</SUB>+½O<SUB>2</SUB>->NiSO<SUB>4</SUB>+H<SUB>2</SUB>O<?in-line-formulae description="In-line Formulae" end="tail"?> The 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.</p>
申请公布号
EP1689682(B1)
申请公布日期
2013.07.31
申请号
EP20040812338
申请日期
2004.11.23
申请人
TEXACO OVONIC BATTERY SYSTEMS LLC
发明人
FIERRO, CRISTIAN;BENET, GABRIEL, E.;ZALLEN, AVRAM;HICKS, TIM;FETCENKO, MICHAEL, A.