Process for producing sodium salts from brines of sodium ores

Details Process for producing sodium salts from brines of sodium ores Process for producing sodium salts from brines of sodium ores

1992-02-21

1993-11-16

Brunsman, David

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

423427, 4232062, 23302T, C01D 712

Patent

active

052621340

ABSTRACT:
A process is described for producing sodium-based chemicals from a brine containing sodium carbonate and sodium bicarbonate by heating the brine to evaporate water and drive off carbon dioxide and obtain a solution that will crystallize sodium sesquicarbonate, cooling the solution, precipitating sodium sesquicarbonate crystals and separating a first mother liquor from the sesquicarbonate crystals. The first mother liquor is then cooled to a lower temperature to precipitate sodium carbonate decahydrate crystals, the decahydrate crystals are separated from a second mother liquor and the decahydrate crystals are recovered for use in the manufacture of sodium-containing chemicals, such as sodium carbonate monohydrate, anhydrous sodium carbonate or soda ash.

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