Composition and method for improved aluminum hydroxide...

Details Composition and method for improved aluminum hydroxide... Composition and method for improved aluminum hydroxide...

2011-06-07

2011-06-07

Silverman, Stanley (Department: 1736)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S111000, C423S127000

Reexamination Certificate

active

07955589

ABSTRACT:
An improved method and composition for producing aluminum hydroxide crystals in a Bayer process pregnant liquor, involve the addition of a crystallization modifier comprising a C8-C10fatty acid, precursors, salts or blends thereof. The alkyl chain of the fatty acid crystallization modifier is free of functional groups. The modifier yields a commercially in the presence and absence of an hydrocarbon oil which dissolves the fatty acid.

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patent: 6293973 (2001-09-01), Farquharson et al.
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