Process for producing soda ash from natural alkali metal carbona

Details Process for producing soda ash from natural alkali metal carbona Process for producing soda ash from natural alkali metal carbona

1978-01-18

1979-06-12

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

23302T, C01D 700

Patent

active

041580435

ABSTRACT:
Described herein is a process for producing soda ash (sodium carbonate) from natural ores such as trona in which separate soda ash products are produced having differing purities. According to the invention, a substantially purified and saturated solution of sodium carbonate is divided into at least two separate process streams, one of which is subjected to crystallization in the absence of recycled mother liquor to form high purity sodium carbonate-containing crystals, while the other stream is subjected to crystallization in the presence of recycled mother liquor to form lower purity crystals. The crystals are thereafter separately processed to obtain soda ash products of differing grades.

REFERENCES:
patent: 3653848 (1972-04-01), Port et al.

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