Process for making sodium carbonate decahydrate from sodium carbonate/bicarbonate liquors
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United States of America Patent
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Nov 27, 2001
Issued Date -
N/A
app pub date -
May 19, 2000
filing date -
May 21, 1996
priority date (Note) -
Expired
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Abstract
A process for forming useful sodium salts by uniquely processing dilute brine solutions having sodium bicarbonate concentrations is disclosed. The dilute brine is reduced in sodium bicarbonate content to prevent precipitation of the sodium bicarbonate in subsequent crystallization of sodium carbonate decahydrate. The reduced brine is directed to a crystallizer operated to form pure sodium carbonate decahydrate crystals and a carbonate/bicarbonate containing mother liquor. The mother liquor is then recycled as a portion of said aqueous solvent to be used in the solution mining of the ore deposit.
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