Process for recovering metal values from alloy scraps

Details Process for recovering metal values from alloy scraps Process for recovering metal values from alloy scraps

C - Chemistry, Metallurgy

22

B

53/302

C22B 7/00 (2006.01) C22B 34/30 (2006.01)

Patent

CA 1221548

ABSTRACT 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.

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