Recovery of soda values from sodium carbonate crystallizer purge

Details Recovery of soda values from sodium carbonate crystallizer purge Recovery of soda values from sodium carbonate crystallizer purge

1976-09-16

1977-08-23

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

23302T, 423206T, 423207, 423208, 423421, C01D 724

Patent

active

040440974

ABSTRACT:
Soda values from the crystallizer mother liquor purge in the process of making sodium carbonate from trona are recovered by (1) mixing the purge with treating agent of magnesium oxide, aluminum oxide, bauxite, certain fine particle size calcined trona, insoluble impurities obtained in the trona-soda ash process, or mixtures thereof, (2) evaporating the resulting mixture to dryness and calcining it to insolubilize soluble silicates and to reduce contamination with carbonaceous impurities, and (3) leaching the calcined mixture with water or aqueous sodium carbonate solution.

REFERENCES:
patent: 3655331 (1972-04-01), Seglin et al.
patent: 3838189 (1974-09-01), Sopchak et al.
patent: 3870780 (1975-03-01), Guptill
patent: 3933977 (1976-01-01), Ilardi et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 12, Second Edition.

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