Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkali metal
Patent
1975-06-17
1977-08-02
Vertiz, O. R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkali metal
23302T, 423186, 423421, C01D 700
Patent
active
040396185
ABSTRACT:
In the process for making sodium carbonate from trona, the soluble silicate content of crystallizer mother liquor from which sodium carbonate precursor crystals are obtained by evaporative crystallization is reduced by digesting the mother liquor at elevated temperature in the presence of certain activated insolubles, followed by separating the insolubles from the digested mother liquor. These activated insolubles are obtained by calcining crushed trona, dissolving the calcined trona in an aqueous medium to obtain a solution of sodium carbonate containing insolubles, separating the insolubles and activating them by calcination at elevated temperature.
REFERENCES:
patent: 1273110 (1918-07-01), Mitchell
patent: 3689218 (1972-09-01), Hodges
patent: 3870780 (1975-03-01), Guptill
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Edition, vol. 12, 1967.
Gancy Alan B.
Poncha Rustom P.
Allied Chemical Corporation
Fuchs Gerhard H,.
Langel Wayne A.
Stewart Anthony J.
Vertiz O. R.
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