Title: Mfr. of sodium carbonate from dry-exploited ore
Application Number: 86104762 Application Date: 1986.07.17
Publication Number: 1016458 Publication Date: 1988.02.17
Approval Pub. Date: Granted Pub. Date: 1990.06.13
International Classifi-cation: C01D7/12,C10D7/14
Applicant(s) Name: FMC Corp. Address:
Inventor(s) Name:
Attorney & Agent: WU HUIZHONG
Abstract:
     A method is disclosed for the nfr. of sodicm carbonate from natural mineral sodium bicarbonate by following steps: (a) calcining the dry-exploited sodium bicarbonate ore to form raw sodium carbonate; (b) dissolving the calcined ore in got water to obtain a sodium carbonate solution which contains non-soluble ore; (c) separating the concentric sodium carbonate aqueous solution from non-soluble matter; (d) subjecting the sodium carbonate hydrate to be continuously crystallized by evaparation of water to obtain a crystal slurry; (e) taking a portion of crystal slurry out of crystallization process and separating the crystal sodium carbonate hydrate from slurry by centrifuging; and (f) drying the obtained sodium carbonate hydrate.
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