Recovery of chromium from scrap

Details Recovery of chromium from scrap Recovery of chromium from scrap

C - Chemistry, Metallurgy

22

B

53/119

C22B 34/32 (2006.01) C01G 37/00 (2006.01) C22B 7/00 (2006.01)

Patent

CA 1147969

MIN-2968 RECOVERY OF CHROMIUM FROM SCRAP ABSTRACT OF THE DISCLOSURE To recover chromium from scrap such as superalloy scrap, the feedstock is melted, subjected to controlled oxidation to oxi- dize and slag off reactive metals, then subjected to sulfidation and slow cooling to produce a coarse-grained solid wherein the bulk of the chromium is present in a phase consisting predominantly of a chromium sulfide.

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