Patent ID: 8882882

Claim:
A method of manufacturing Ni and Fe-containing material from recycling residue of spent petrochemical desulfurization catalyst, comprising: providing the spent petrochemical desulfurization catalyst comprising V, Mo, Ni and Fe components; mixing the spent petrochemical desulfurization catalyst with sodium carbonate; desulfurizing the mixture by hot roasting; leaching V and Mo in a water solution; treating the water solution with acid to remove Na and Ca impurities therefrom; drying the residue from which the Na and Ca impurities have been removed and heat treating the residue in a temperature range from 600° C. (degree Centigrade) to 1300° C. (degree Centigrade) in a reducing atmosphere to reduce Ni and Fe oxides existing as spinel phases, NiOAl 2 O 3 and FeOAl 2 O 3 , in the residue into metal state; leaching, with acid, a resultant product obtained by the reduction to selectively dissolve Ni and Fe; filtering the acid leached product to obtain a solution containing Ni and Fe ions; neutralizing the solution containing Ni and Fe ions with alkali to produce Fe,Ni hydroxide; and filtering and drying a resultant product obtained by the neutralization to produce a Ni and Fe-containing material.