Method for enriching raw salt
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United States of America Patent
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Jul 31, 2001
Grant Date -
N/A
app pub date -
Oct 12, 1999
filing date -
Apr 11, 1997
priority date (Note) -
Expired
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Abstract
Process for enriching crude salt, in which the crude salt is ground and then cooled in a saturated aqueous sodium chloride solution, to a temperature below the anhydrous sodium chloride to sodium chloride dihydrate transition temperature, a stock of a powder comprising sodium chloride crystals is collected from the cooling step and the powder is subjected to particle-size fractionation from which a fine particle-size fraction and a coarse particle-size fraction comprising the enriched salt are collected.
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