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US 9,868,646 B2Granted
Compositions for enhancing production of aluminum hydroxide in an aluminum hydroxide production process
AssigneeEcolab USA Inc.
InventorsJianjun Liu, Kevin O'Brien
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Abstract
Compositions and methods used in the modification of crystallization of aluminum hydroxide from liquor in an aluminum hydroxide production process, such as the Bayer process. More particularly, crystal growth modifier compositions comprising a component of crude corn oil derived from a bioethanol production process and/or a component of biodiesel and methods of using such compositions to modify particle size and distribution of precipitated alumina trihydrate in a precipitation liquor crystallization process.
Claims17
A liquor crystallization composition comprising:
- (a) a precipitation liquor comprising an aluminate;
- and
- (b) a crystal growth modifier composition comprising
- 0-99 percent by weight of a carrier liquid comprising a hydrocarbon liquid, and
- 1-100 percent by weight of a crude corn oil component, a biodiesel component, or a mixture of the crude corn oil component and the biodiesel component,
- wherein the crude corn oil component comprises crude corn oil extracted as a distinct phase byproduct from an ethanol production process and
- wherein the biodiesel component comprises a biodiesel or mixture of biodiesels comprising methyl esters of long chain fatty acids.
4 more elements
Dependencies are inferred from the claim text.