Process for manufacturing nickel sulphate
AssigneeSolvay SA
InventorsMaria Jose Lacadena, Alun Pryce James
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Abstract
A process for manufacturing nickel sulphate by leaching metal particles comprising nickel in an aqueous sulphuric acid solution, said process comprising the steps of: introducing the metal particles in the aqueous sulphuric acid solution introducing an aqueous hydrogen peroxide solution in the aqueous sulphuric acid solution containing the metal particles wherein the aqueous hydrogen peroxide solution is introduced progressively into the aqueous sulphuric acid solution containing the metal particles.
Claims21
A process for manufacturing nickel sulphate by leaching metal particles comprising nickel in an aqueous sulphuric acid solution, said process comprising the steps of:
- introducing the metal particles in the aqueous sulphuric acid solution;
- and
- introducing an aqueous hydrogen peroxide solution in the aqueous sulphuric acid solution containing the metal particles;
- wherein the aqueous hydrogen peroxide solution is introduced progressively into the aqueous sulphuric acid solution containing the metal particles,
- wherein the aqueous sulphuric acid solution has a concentration of 60 wt % or less, and
- wherein the aqueous hydrogen peroxide solution is introduced by increments of less than 1% of a total amount of hydrogen peroxide to be added into the aqueous sulphuric acid solution containing the metal particles.
A process for manufacturing nickel sulphate by leaching metal particles comprising nickel in an aqueous sulphuric acid solution, said process comprising the steps of:
- introducing the metal particles in the aqueous sulphuric acid solution;
- and
- introducing an aqueous hydrogen peroxide solution in the aqueous sulphuric acid solution containing the metal particles,
- wherein the aqueous hydrogen peroxide solution is introduced in the aqueous sulphuric acid solution containing the metal particles in the absence of ultrasounds, and
- wherein the aqueous hydrogen peroxide solution is introduced progressively into the aqueous sulphuric acid solution containing the metal particles and the aqueous sulphuric acid solution has a concentration of 50 wt % or less, and wherein the aqueous hydrogen peroxide solution is introduced by increments of less than 1% of a total amount of hydrogen peroxide to be added into the aqueous sulphuric acid solution containing the metal particles.
Dependencies are inferred from the claim text.