Recovery of platinum group metals and rhenium from materials usi

Details Recovery of platinum group metals and rhenium from materials usi Recovery of platinum group metals and rhenium from materials usi

1995-01-27

1996-08-06

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75744, 423 22, 205570, C22B 346

Patent

active

055429572

ABSTRACT:
Platinum group metals and rhenium are extracted from their elemental state, complex ores, and other materials such as catalysts by leaching them with a solution containing ammonium halogen salts--iodide and bromide in the presence oxygen and/or sulfuric acid. The invented process is particularly effective for spent catalysts containing precious metals and rhenium in an autoclave at a temperature of 50.degree. C.-300.degree. C.

REFERENCES:
patent: 3709681 (1973-01-01), Wilson et al.
patent: 3775099 (1973-11-01), Coffield et al.
patent: 3778252 (1973-12-01), Wilson
patent: 3826750 (1974-07-01), Wilson
patent: 3957505 (1976-05-01), Homick et al.
patent: 3988415 (1976-10-01), Barr
patent: 4070182 (1978-01-01), Genik-Sas-Berezowsky et al.
patent: 4093698 (1978-06-01), Cardwell
patent: 4137291 (1979-01-01), Cardwell et al.
patent: 4146572 (1979-03-01), Cardwell et al.
patent: 4269622 (1981-05-01), Kerley, Jr.
patent: 4319923 (1982-03-01), Falanga et al.
patent: 4369061 (1983-01-01), Kerley, Jr.
patent: 4557759 (1985-12-01), McGrew et al.
patent: 4654078 (1987-03-01), Perez et al.
patent: 4684404 (1987-08-01), Kalocsai
patent: 4980134 (1990-12-01), Butler
patent: 5114687 (1992-05-01), Han
patent: 5139752 (1992-08-01), Nakao et al.
patent: 5308381 (1994-05-01), Han
patent: 5364444 (1994-11-01), McDoulett
D. P. Desmond et al., "High-Temperature Cyanide Leaching Of Platinum-Group Metals From Automobile Catalysts-Laboratory Tests", United States Department of the Interior, Bureau of Mines, RI 9384/1991, pp. 1-7.
R. J. Kuczynski et al., "High-Temperature Cyanide Leaching Of Plantinum-Group Metals From Automobile Catalysts-Process Development Unit", United States Department of the Interior, Bureau of Mines, RI 9428/1992, pp. 1-11.
Abdullaev et al., "Autoclave Leaching of Auriferous Sulfide Ore". pp. 25-26 6-6-75.

Affiliated with

Also associated with

Rating

Recovery of platinum group metals and rhenium from materials usi 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 platinum group metals and rhenium from materials usi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of platinum group metals and rhenium from materials usi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2188363