Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Patent
1974-07-26
1976-09-21
Vertiz, Oscar R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iib metal
423 24, 423622, C01G 902
Patent
active
039819663
ABSTRACT:
A process for the recovery of metal values, principally zinc and copper, from an aqueous acidic purge stream in a hydrometallurgical process by contacting the stream containing the iron, copper and zinc sulfates, along with trace amounts of other metallic sulfates with calcium oxide to bring the pH in the range 3.0-4.0, thence with sufficient ammonia to form the soluble tetrammine sulfates of copper and zinc, then separating the copper from the zinc, e.g. by hydroxy oxime-solvent extraction and thereafter recovering the zinc as zinc oxide by converting the zinc tetrammine sulfate to the hydroxide and removing ammonia from the complex.
REFERENCES:
patent: 1154602 (1915-09-01), Best
patent: 1331334 (1920-02-01), Field
patent: 2128311 (1938-08-01), Mertes
patent: 2639975 (1953-05-01), Muller et al.
patent: 3224873 (1965-12-01), Swanson
patent: 3453072 (1969-07-01), Vian-Ortuno et al.
patent: 3794719 (1974-02-01), Lowenhaupt et al.
C.I.M. Bulletin, Feb., 1975, pp. 105, 106, 113, (Ritcey et al.).
Fletcher et al., "Napthenic Acid as a Liquid-Liquid Extraction Reagent for Metals" Inst. Mining & Metallurgy, England 1961, pp. 355, 365.
E. I. Du Pont de Nemours and Company
Hearn Brian E.
Vertiz Oscar R.
LandOfFree
Zinc recovery from acidic aqueous streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Zinc recovery from acidic aqueous streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zinc recovery from acidic aqueous streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1413796