Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Patent
1984-01-19
1985-02-19
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iib metal
423101, 423 24, 423 32, 423 34, 423 92, 423139, 423140, 423157, 423158, 423181, 423184, 423491, 204 66, C01G 904
Patent
active
045004986
ABSTRACT:
Anhydrous zinc chloride is produced from an aqueous feed solution containing zinc chloride from an aqueous feed solution containing zinc chloride. The zinc chloride is extracted onto an organic extractant known to the art such as tributyl phosphate, primary, secondary or tertiary amines, and quaternary amine salts. The loaded extractant is then stripped with aqueous stripping solution containing ammonium chloride and ammonium hydroxide. The zinc ammine chloride formed in this aqueous stripping solution is separated from the stripping solution and can then be heated to form anhydrous zinc chloride and ammonia. This anhydrous zinc chloride is suitable as a feed material to a fused salt electrolysis process for the production of zinc.
REFERENCES:
patent: 1388086 (1921-08-01), Ashcroft
patent: 3441372 (1969-04-01), Pegler et al.
patent: 3446720 (1969-05-01), Brooks
patent: 3673061 (1972-06-01), Kruesi
patent: 4058585 (1977-11-01), MacKay et al.
patent: 4421616 (1983-12-01), Bjune et al.
Gmelin's Handbuch der Anorganschem Chemie, Zinc Achte Aflage, Verlog Chemie, (1956), pp. 871-875.
U.S. Bureau of Mines publication RI 8524, (1981).
Nogueira, E. D., et al., "Winning Zinc Through Solvent Extraction and Electrowinning," E&MJ, 92-94, (Oct., 1979).
Thomas, B. K., et al., "Leaching of Oxidic Zinc Materials with Chlorine and Chlorine Hydrate," Metallurgical Transactions B, 12B:281-285 (Jun. 1981).
Forrest, V. M. P., et al., "The Extraction of Zinc and Cadmium by Tri--N--Butyl Phosphate from Aqueous Chloride Solutions," J. Inorg. Chem., 31:187-197 (1968).
May, J. T., et al., "Dehydrating Magnesium Chloride by Double--Salt Decomposition," Bureau of Mines Report of Investigations 8277, pp. 1-19.
Allain, R. J., "A New Economic Process for Making Anhydrous Magnesium Chloride," TMS--AIME, p. 325, (Feb. 24-28, 1980).
Kruesi Paul R.
Kruesi William H.
Cato Research, Inc.
Doll John
Stoll Robert L.
LandOfFree
Ammonium chloride-ammonium hydroxide strip for the recovery of a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ammonium chloride-ammonium hydroxide strip for the recovery of a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ammonium chloride-ammonium hydroxide strip for the recovery of a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-612762