PROCESS FOR RECOVERING METAL VALUES FROM ALLOY SCRAPS

摘要

A process for recovering metal values from Ni and Co based superalloy scraps containing Cr, W and Mo is disclosed. The process is a multistep pyrometallurgical oxidation process wherein the metal is successively oxidized by oxygen, Fe2O3 or both in a tiltable electric arc furnace with slag withdrawal after each oxidation step in order to obtain a substantially pure Ni/Co alloy melt.