Process for disaggregating boronatrocalcite ore in an alkaline medium for the production of sodium borate and calcium borate
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United States of America Patent
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Dec 7, 1993
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N/A
app pub date -
May 22, 1992
filing date -
Jun 8, 1990
priority date (Note) -
Expired
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Abstract
A process for disaggregating boronatrocalcite ore (Ulexite) in an alkaline aqueous medium for the production of sodium borate and calcium borate, characterized in that boronatrocalcite is dispersed in alkaline mother liquor having a H.sub.3 BO.sub.3 /Na.sub.2 O weight ratio ranging from 1.8 to 2.7, at a temperature of 120.degree.-200.degree. C. under autogenous pressure of 2-16 bars, under intense stirring.
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