Closed system multistage superpurification recrystallization
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United States of America Patent
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Nov 14, 1995
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N/A
app pub date -
Jun 17, 1993
filing date -
Jun 17, 1993
priority date (Note) -
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Abstract
A method and apparatus are provided for superpurifying crystallizable substances to a purity level of 99.999%. Included is a closed multistage system which maintains controlled transfers of material between a plurality of stages. The method and apparatus avoid the need to transfer solid crystals from one stage to another and effect efficient and very effective separation of purified crystals from their mother liquor.
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