Abstract
The paper presents the possibilities of purifying nickel sulfate solutions resulted at the acid leaching of spent steam reforming catalysts, in order to obtain electroplating grade NiSO4. The role of chelating ion exchange resins in the retention of aluminum, iron, calcium and magnesium is emphasized. A flow sheet for manufacturing purified nickel sulfate solutions is established.
Cuvinte cheie
nickel sulfate
electroplating
ion exchange
metal recovery
spent catalysts recycling