Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Reexamination Certificate
2007-05-22
2007-05-22
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
C423S150100
Reexamination Certificate
active
10300540
ABSTRACT:
The present invention relates to a process for simultaneous recovery of chromium and iron from Chromite Ore Processing Residue (COPR) and more particularly, the present invention relates to an economical and environment-friendly process for recovering chromium as a chromate salt and iron as an iron salt from non-leachable Chromite Ore Processing Residue and avoids landfilling of toxic metals.
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Ramasami Thirumalachari
Sreeram Kalarical Janardhanan
Council of Scientific and Industrial Research
Drinker Biddle & Reath LLP
Monaco Daniel A.
Silverman Stanley S.
Wartalowicz Paul
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