Composition and method for enhancing the production of crystal agglomerates from a precipitation liquor
AssigneeNalco Company
InventorsDmitri L. Kouznetsov, Jianjun Liu, Kim Richard Coleman, Ryan Travis Chester, John David Kildea
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Abstract
The present invention relates ways to increase the output of a high quality product from the precipitation liquor crystallization process exemplified through the aluminum hydroxide recovery processes such as the Bayer process. The invention is a method of increasing the size of precipitated of a liquor. The invention in one embodiment relates to the use of a crystal growth modifier compositions added to the precipitation process to increase the particle size distribution of the precipitated alumina trihydrate.
Claims6
A method for enhancing the production and recovering of crystal agglomerates from a precipitation liquor crystallization comprising the following:
- (i) adding to the precipitation liquor a crystal growth modifying composition comprised of one or a blend of surfactants, an oil in the amount greater than 15%, and water incorporated together as a emulsion;
- (ii) distributing the crystal growth modifying composition through the precipitation liquor;
- and
- (iii) precipitating crystal agglomerates from the liquor.
Dependencies are inferred from the claim text.