Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1985-03-21
1986-08-26
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423 59, 423150, 423596, 423606, 423641, 423DIG12, 75 63, 75 65R, 75 66, 75 93R, 75 82, 75101R, 75119, 75121, C01G 5100
Patent
active
046082352
ABSTRACT:
A process is disclosed for recovering cobalt from an alloy containing other metals as chromium, tungsten, etc. The process involves first adding the alloy to fused sodium hydroxide at a temperature of from about 750.degree. C. to about 1000.degree. C. to form a reaction mixture, the amount of sodium hydroxide being sufficient to subsequently form sodium salts which are essentially those of chromium and tungsten and hydroxides which are essentially those of cobalt and nickel. The reaction mixture is then heated at a sufficient temperature for a sufficient time while introducing an oxidizing gas into the reaction mixture to form a melt which consists essentially of the sodium salts and the hydroxides, followed by cooling the melt. The cooled melt is then contacted with sufficient water to form a solution containing the major portion of the sodium salts and a solid containing the major portion of the hydroxides, followed by separating the solid from the solution. The solid is then washed with sufficient water to remove the remaining portion of the sodium salts and other water soluble impurities and then separated from the resulting wash water.
REFERENCES:
patent: 3510256 (1970-05-01), Schafer
patent: 3859412 (1975-01-01), Okabe et al.
patent: 3932230 (1976-01-01), Summers
patent: 4173467 (1979-11-01), Rosof
patent: 4466826 (1984-08-01), Vartiainen
Gingerich Richard G. W.
Scheithauer Richard A.
Vanderpool Clarence D.
Doll John
GTE Products Corporation
McNeill William H.
Stoll Robert L.
LandOfFree
Recovery of cobalt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of cobalt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of cobalt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2311641