Composition and method for improved aluminum hydroxide production
US7955589B2 · kind B2 · utility
3Cited by
6References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/51
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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-C10 fatty 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.