Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1992-07-09
1993-12-21
Brunsman, David
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423 37, 423 41, 4231505, 423508, 423509, 423510, 75714, C01B 1900
Patent
active
052719090
ABSTRACT:
A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100.degree. and 200.degree. C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the slurry with an appropriate reducing agent immediately after the leaching operation has been halted and the leaching reactor brough back to atmospheric pressure to reprecipitate any excessive quantities of silver and selenium solubilized during the leaching operation.
REFERENCES:
patent: 4002544 (1977-01-01), Heimala et al.
patent: 4047939 (1977-09-01), Morrison
patent: 4094668 (1978-06-01), Yannopoulos et al.
patent: 4299810 (1981-11-01), Snow
patent: 5160588 (1992-11-01), Sugawara et al.
Chemical Abstracts 114:106355g vol. (12) (1990), 114:232402h vol. (24) (1991) 108(24):208186w (1988), and 103(4):25462k (1985).
Claessens Pierre L.
White Carl W.
Brunsman David
Noranda Inc.
LandOfFree
Method of tellurium separation from copper electrorefining slime does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of tellurium separation from copper electrorefining slime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of tellurium separation from copper electrorefining slime will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-307284