Treatment of brine to remove metals and silicon therefrom
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United States of America Patent
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Sep 30, 2003
Grant Date -
Feb 6, 2003
app pub date -
Jun 25, 2001
filing date -
Jun 25, 2001
priority date (Note) -
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Abstract
Disclosed is a process for reducing the amount of silicon in brine. More specifically the silicon content of the brine is reduced to 1 ppm or less by using low caustic excess. The disclosed process can also be characterized as lowering sodium hydroxide excess (caustic excess) while maintaining the sodium carbonate level thereby obtaining a brine with a low level of silicon. A further purification step employs a sludge blanket.
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