Hydrometallurgical process for the treatment of a raw material w

Details Hydrometallurgical process for the treatment of a raw material w Hydrometallurgical process for the treatment of a raw material w

1981-09-29

1982-12-07

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423109, 423146, 423150, 423633, C22B 300, C01G 4906

Patent

active

043627021

ABSTRACT:
A hydrometallurgical process for the treatment of a raw material which contains oxides and ferrites of zinc, copper and cadmium is disclosed, wherein the raw material is neutral leached by means of a sulfuric-acid-bearing solution to leach the oxides without substantial dissolving of the ferrites, a ferrite-bearing residue is separated, and a sulfuric-acid-bearing or ferrisulfate-bearing solution is mixed with the residue in order to leach the ferrite and to precipitate the iron in the form of jarosite in the presence of alkali or ammonium ions under atmospheric conditions at 80.degree.-105.degree. C., and the solid phase is separated from the solution. The sulfuric-acid-bearing or ferrisulfate-bearing solution is added to the ferrite-bearing residue in such an amount that approximately 50-60% of the ferrite dissolves and its iron is precipitated as jarosite, and the slurry of the solid phase is treated at such elevated pressure and temperature that the zinc of the solid phase is converted to zinc sulfate and the iron to hematite in accordance with the following reaction:

REFERENCES:
patent: 1834960 (1931-12-01), Mitchell
patent: 3910784 (1975-10-01), Rastas
patent: 3959437 (1976-05-01), Rastas
patent: 3985857 (1976-10-01), Menendez
patent: 4129454 (1978-12-01), Pavonet
patent: 4219354 (1980-08-01), Rastas
Rastas et al., "Treatment of Residues in the Electrolytic Zinc Process", TMS Paper No. A73-11, (2/73), AIME, N.Y.
Lead and Zinc, vol. II, pp. 217-219, (AIME Word Symposium), AIME, N.Y., (1970).

Affiliated with

Also associated with

Rating

Hydrometallurgical process for the treatment of a raw material w does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrometallurgical process for the treatment of a raw material w, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrometallurgical process for the treatment of a raw material w will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1902896