Chemistry of inorganic compounds – Boron or compound thereof – Oxygen containing
Patent
1997-04-18
1998-07-28
Langel, Wayne
Chemistry of inorganic compounds
Boron or compound thereof
Oxygen containing
423280, C01B 3512
Patent
active
057859396
ABSTRACT:
An improved method is provided for producing crystalline calcium hexaborate tetrahydrate, synthetic nobleite, by the reaction of boric acid and lime in an aqueous slurry. Reaction conditions include boric acid to water molar ratios of greater than 0.25:1, lime to boric acid molar ratios in the range of 0.05-0.15:1 and temperatures in the range of 60.degree.-85.degree. C. A concentration of at least 25% by weight undissolved solids is in the aqueous product slurry.
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Langel Wayne
Thornton James R.
U.S. Borax Inc.
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