Treatment of zinc calcines for zinc recovery

Details Treatment of zinc calcines for zinc recovery Treatment of zinc calcines for zinc recovery

1977-07-11

1978-12-05

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423109, C01G 906

Patent

active

041286170

ABSTRACT:
A process for the treatment of zinc calcine containing zinc oxides, zinc sulfates and zinc ferrites, which comprises neutral leaching, hot acid leaching, jarosite precipitation and recycling of the jarosite containing pulp whereby there is obtained increased zinc extractions, improved settling and filtering characteristics of the leach pulp, simplified operation and process control and increased ammonium removal.

REFERENCES:
patent: 3684490 (1972-08-01), Steintueit
patent: 3985857 (1976-10-01), Menendez et al.
Rastas et al., "Treatment of Iron Residues in the Electrolytic Zinc Process," TMS Paper A73-11, (Feb. 1973), AIME, N. Y., pp. 6, 7; 14-17.
Gordon et al., "Improved Leaching Techniques in the Electrolytic Zinc Industry," Metallurgical Transactions, vol. 6B, Mar. 1975, pp. 43-53.

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