Method for treating hydrated green salt
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United States of America Patent
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Aug 24, 1993
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N/A
app pub date -
Jan 13, 1992
filing date -
Jun 22, 1989
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Abstract
A method of producing a high density, low hygroscopic green salt from hydrated green salt includes heating a charge of hydrated green salt in a nonreactive atmosphere to a first temperature above the boiling point of water to drive off free water; heating the charge in a nonreactive atmosphere to a second temperature higher than the first temperature to drive off the water of crystallization present in the green salt; heating the charge in a nonreactive atmosphere to a third temperature higher than the second temperature to induce anhygroscopicity of the charge; and cooling the charge to approximately 400.degree. F. or less in a protective atmosphere to prevent atmospheric oxidation and hydrolysis.
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