Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1979-12-27
1981-03-31
Andrews, M. J.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423561R, C01G 3700
Patent
active
042592968
ABSTRACT:
To recover chromium from scrap such as superalloy scrap, the feedstock is melted, subjected to controlled oxidation to oxidize 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.
REFERENCES:
patent: 3577231 (1971-05-01), Pesses
Ahmad Umar M. U.
deBarbadillo John J.
Hennion Francis J.
Andrews M. J.
Brown William S.
Gardiner Donald A.
The United States of America as represented by the Secretary of
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