Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Platinum group metal
Patent
1991-05-10
1992-11-03
Morris, Theodore
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Platinum group metal
4232135, 75744, 75732, 75735, C01G 5500, C22B 1100
Patent
active
051607115
ABSTRACT:
A method for recovering platinum group metals from a catalyst material comprises leaching the material with a cyanide solution at a temperature greater than about 100.degree. C. to form soluble platinum group metal-cyanide complexes in solution. Solids are removed from the resulting pregnant leach solution, and the pregnant leach solution is then heated to a temperature sufficient to decompose the platinum group metal-cyanide complexes and precipitate the platinum group metals.
REFERENCES:
patent: 963111 (1910-07-01), Avery et al.
patent: 3469971 (1969-09-01), Leopard
patent: 4578163 (1986-03-01), Kunter et al.
patent: 4637865 (1987-01-01), Sergent et al.
Mellor, A Comprehensive Treatise on Inorganic and Theoretical Chemistry, Longmans, Green and Co. Ltd. (1941), p. 500.
Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 7, John Wiley & Sons (1979).
Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 5, John Wiley & Sons (1979), pp. 48-50.
Dawson, "Testwork on Samples of Oxidized Ore from the Potgietersrus Prospect," Mintek, South Africa, No. M59D, 1982 26 pp.
Hoffmann, "Recovering Platinum Group Metals From Auto Catalysts," Journal of Metals, Jun. 1988, pp. 40-44.
Mishra, "Recovery of Platinum Group Metals From Automobile Catalytic Converters-A Review," Precious Metals '89, The Minerals, Metals and Materials Society, 1988, pp. 483-501.
Atkinson Gary B.
Desmond Dennis P.
Kuczynski Robert J.
Koltos E. Philip
Morris Theodore
Squillante Edward
The United States of America as represented by the Secretary of
LandOfFree
Cyanide leaching method for recovering platinum group metals fro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cyanide leaching method for recovering platinum group metals fro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyanide leaching method for recovering platinum group metals fro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2050689