Methods and compositions for the removal of impurities and water from the Bayer process

US7972580B2 · kind B2 · utility

Assignee

• CYTEC TECHNOLOGY CORP. · US

Inventors

• Matthew Taylor · New York, US
• Douglas J. Harris · Stamford, US
• Haunn-Lin Tony Chen · Morganville, US
• Violina Antoneta Cocalia · Stamford, US

Key dates

• Filing date: Dec 22, 2008
• Grant date: Jul 5, 2011
• Expiry date: Mar 8, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01F7/473
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A liquid phase that comprises an oxalate-extracting amount of an organic salt is useful as an extractant in a liquid/liquid extraction process for purifying Bayer process streams.