A process for the recovery of pure nickel sulphate from the spent nickel stripper solution

The present invention provides a process for the recovery of pure nickel sulphate from the spent nickel stripper solution using sulphuric acid for precipitating the organic materials and roasting the impure nickel sulfate crystals at optimum temperature and duration and finally employing active charcoal treatment to get pure nickel sulfate solution from which nickel sulfate salts are crystallized. The novelty of the present invention is that impure nickel sulphate salt crystallized from nickel stripper solution is decomposed to break the nickel proprietary organic complex at 300-600°C in the roasting operation of the impure salt to liberate nickel in the form of pure nickel oxid