A hydrochloric-acid-contacted hydrogen bond acceptor and hydrophobic organic phase selectively leach nickel while limiting silicon contamination.
A deep eutectic leaching agent selectively extracts nickel from oxidized ore while limiting magnesium contamination for purer nickel sulfate.
A two-tank nickel briquette dissolution process raises nickel sulfate throughput while avoiding larger tanks and reducing thermal shock.
Controlled acid depletion in a column reactor drives nickel-to-nickel sulphate conversion while limiting reactant waste.
Integrates heap leaching, pressure leaching, and pyrometallurgy to produce battery-grade nickel sulfate from laterite ore.
Hydrogen peroxide oxidizes nickel to eliminate hazardous hydrogen gas, enabling safe production of battery materials.
Hydrophobic deep eutectic solvent recovers metal leaching capacity by contacting hydrochloric acid, restoring nickel extraction efficiency.
Partial neutralization controls pH to prevent gel formation during filtration, recovering nickel and chromium from acidic waste.
Progressive hydrogen peroxide addition activates nickel surfaces for rapid sulphuric acid dissolution.
Selective dissolution of iron oxide via hot concentrated sulfuric acid reduces nickel loss while achieving 19.73%-21.34% purity.
Hydrophobic deep eutectic solvents extract nickel from ore, reducing waste generation and process complexity in nickel sulfate production.