Method for obtaining sodium carbonate crystals
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United States of America Patent
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May 4, 2010
Grant Date -
Aug 14, 2008
app pub date -
Mar 7, 2006
filing date -
Mar 8, 2005
priority date (Note) -
Expired
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Abstract
Method for producing sodium carbonate, according to which an aqueous sodium chloride solution (5) is electrolyzed in a membrane-type cell (1) from which an aqueous sodium hydroxide solution (9) is collected, and carbonated by direct contact with carbon dioxide (15) to form a slurry of crystals of a sodium carbonate (16), and the slurry or its mother liquor is evaporated (3) to collect sodium carbonate (18).
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