Abstract
Nalco first introduced its Crystal Growth Modifiers (CGM) technology to the alumina processing industry more than 25 years ago. Since then the use of CGM to enhance agglomeration, improve productivity and increase particle toughness has now been well established, with many plants using CGM dosage as a critical tool for process control in precipitation. Nalco continues to better understand the mechanisms and activity of CGMs, resulting in the development of a range of new CGM products with improved performance and with specific properties, for example, enhanced or reduced oxalate impact, or improved antifoam capacity. When compared to ‘more conventional’ CGMs, these new formulations are expected to 1) allow further increases in liquor productivity by improving agglomeration and coarsening, and 2) provide comparable or improved activity while adding less organics into the process. Together with existing Nalco CGM technologies, these new CGMs provide a broader selection of products to meet the wide and ever-changing producer needs.
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© 2014 TMS (The Minerals, Metals & Materials Society)
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Chester, R., Kildea, J., Phillips, E. (2014). New High-Performance Crystal Growth Modifiers to Improve Alumina Trihydrate Quality and Yield. In: Grandfield, J. (eds) Light Metals 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48144-9_4
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DOI: https://doi.org/10.1007/978-3-319-48144-9_4
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