Removal of Phosphorus, Sulphur, and Arsenic from Ferronickel and Nickel Alloys

In the petroleum industry catalysts are often used to accelerate the reaction rate and remove the hazardous sulphur and arsenic from crude oil. A large quantity of spent catalyst material is generated every year and this represents a relatively cheap source of nickel supply. In order to use this nickel for the production of stainless steel or nickel alloys, the phosphorus, sulphur and arsenic in the material must be removed. The aim of this …