Methods for enhancing production of aluminum hydroxide in an aluminum hydroxide production process

A method for enhancing the production and recovering of crystal agglomerates from a precipitation liquor crystallization process, comprising the steps of:

• adding to precipitation liquor an amount effective to increase particle size of the crystal agglomerates of a crystal growth modifying composition comprising:
• 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 is 80 percent by weight or more weight mono alkyl esters, including C16 and C18 ethyl esters, diglycerol esters and triglycerol esters of long chain fatty acids, and 0-15 percent by weight free fatty acids;
• and
• the biodiesel component comprises a biodiesel or a mixture of biodiesels comprising methyl esters of long chain fatty acids and is 90 percent by weight or more C16, C18 or C22 methyl esters and 0-2 percent by weight free fatty acids;
• and
• 0-99 percent by weight of a carrier liquid, the carrier liquid comprising a hydrocarbon liquid;
• (ii) distributing the crystal growth modifying composition through the precipitation liquor;
• and
• (iii) precipitating crystal agglomerates from the precipitation liquor, wherein the crystal growth modifying composition effectuates an increase in particle size of the crystal agglomerates recovered compared to a precipitation liquor crystallization process absent a crystal growth modifier.