Process for treating sodium aluminosilicate
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United States of America Patent
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Issued Date -
Jun 28, 2001
app pub date -
Dec 28, 2000
filing date -
Dec 28, 1999
priority date (Note) -
Abandoned
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Abstract
The present invention provides a process for treating sodium aluminosilicate which includes adding a calcium compound to sodium aluminosilicate; thermally treating the mixture of the sodium aluminosilicate and the calcium compound; and eluting the thermally-treated product with water or an aqueous solution to thereby solubilize a sodium component of the sodium aluminosilicate, recover sodium, and obtain a useful product containing sodium in very small amounts. The elution percentage of sodium can be increased by optimizing heating and elution conditions.
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