Process for the treatment of material containing zinc and silica

Details Process for the treatment of material containing zinc and silica Process for the treatment of material containing zinc and silica

1974-08-02

1976-05-04

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423109, 423339, C01G 900

Patent

active

039549372

ABSTRACT:
In a process for the treatment of a material containing zinc and soluble silica by dilute aqueous solutions of sulphuric acid at a temperature below its boiling point under atmospheric pressure, the acid is progressively added to the zinc containing material over a period of at least 3 hours, in such a quantity that the final acidity of the solution will be 1.5 to 15 g/l, while carefully maintaining the temperature at 70.degree. to 90.degree.C, thereby inducing the lixiviation of the material and simultaneously the reprecipitation of silica in a crystalline form which can readily be eliminated by filtration.

REFERENCES:
patent: 3652264 (1972-03-01), Bodson
patent: 3656941 (1972-04-01), Matthew et al.
patent: 3684490 (1972-08-01), Steintveit

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