Process for making sodium carbonate
AssigneeSolvay SA
InventorsLEON NINANE, CLAUDE CRIADO
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Abstract
Process for producing sodium carbonate, according to which a sodium sesquicarbonate ore is successively calcined and dispersed in an aqueous solution substantially saturated with hydrated sodium carbonate and the resulting aqueous suspension is subjected to an aging, at the end of which an aqueous mixture of a powder comprising hydrated sodium carbonate crystals is collected. During the aging, a fine particle size fraction is extracted from the aqueous suspension and removed.
Claims10
Process for producing sodium carbonate, according to which a sodium sesquicarbonate ore is successively calcined and dispersed in an aqueous solution substantially saturated with hydrated sodium carbonate and the resulting aqueous suspension is subjected to an aging, at the end of which an aqueous mixture of a powder comprising hydrated sodium carbonate crystals is collected, characterized in that during the aging, a fine particle size fraction is extracted from the aqueous suspension and removed.
Dependencies are inferred from the claim text.