Process for the precipitation of iron as jarosite

Details Process for the precipitation of iron as jarosite Process for the precipitation of iron as jarosite

1978-08-14

1980-03-18

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423145, 423146, C01G 4914

Patent

active

041939700

ABSTRACT:
A process for precipitation of iron as a jarosite compound from sulfate solution in which said solution fed sequentially through a plurality of reaction zones for oxidation and hydrolysis of ferrous sulfate in the presence of alkali-metal or ammonium ions for jarosite precipitation and simultaneous generation of sulfuric acid is subjected to a "reverse temperature profile", i.e., higher temperature in the last reaction zone than in the first reaction zone, by injection of steam to the last reaction zone.

REFERENCES:
patent: 2871116 (1959-01-01), Clark
patent: 3493365 (1970-02-01), Pickering et al.
patent: 3888748 (1975-06-01), Brennecke
C. I. M. Bulletin, Feb. 1978, pp. 116, 125, 126.
Mellor, Inorganic and Theoretical Chemistry, vol. XIV, Longmans, Green & Co., N. Y., (1935), pp. 248, 249.
Rastas et al., "Treatment of Iron Residues in the Electrolytic Zinc Process," TMS Paper No. A73-11, (Feb., 1973), AIME, N. Y., pp. 2, 3, 18, 19.

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