Production of sodium sesquicarbonate and sodium carbonate monohydrate
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United States of America Patent
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Dec 29, 2009
Grant Date -
Jun 21, 2007
app pub date -
Dec 18, 2006
filing date -
Dec 21, 2005
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Abstract
A process for the production and recovery of crystalline sodium sesquicarbonate and of crystalline sodium carbonate monohydrate from aqueous liquors containing sodium carbonate and sodium bicarbonate. The crystalline products may optionally be heated or calcined to produce soda ash. The process is particularly suited for the recovery of soda ash from aqueous minewater streams obtained from solution mining of subterranean trona ore deposits.
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