Abstract
Alcan International Ltd. in collaboration with Ondeo Nalco Company have carried out a fundamental study on the dissolution and performance of a 100% anionic polymer. The effects of method of preparation, solvent composition, temperature and exposure time on flocculent activity under conditions relevant to both atmospheric and pressure decantation were investigated. Flocculent activity was determined using static and dynamic settling tests, and the results were correlated with the reduced specific viscosity (RSV). For any given method of preparation of the flocculent solutions (makeup/dilution) the RSV tended to decrease with increasing solution ionic strength, independent of ionic speciation. While a significant loss in flocculent activity occurred with long exposure of the solution to high temperature, only a minor loss occurred in the short time required to flocculate and settle the mud in a decanter operating at 150 °C. Recent results in an actual plant pressure decanter appear to validate this conclusion.
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References
John Gregory. “Polymeric Flocculents,” Chemistry and Technology of Water-Soluble Polymers, ed. C. A. Finch (New York, NY: Plenum Press, 1983), 307–320.
N. Narkis and M. Rebhun, “Aging Effects in Measurements of Polyacrylamide Solution Viscosities,” Polymer, 1 (1966), 507–512.
Philip Molyneux, Water-Soluble Synthetic Polymers: Properties and Behavior. Volume II (Boca Raton, FL: CRC Press, Inc., 1984), chapter 2.
M. Mandel. “Aqueous Solutions of Polyelectrolytes,” Chemistry and Technology of Water-Soluble Polymers, ed. C. A. Finch (New York, NY: Plenum Press, 1983), 179–192.
K. Bengt et al., Surfactants and Polymers in Aqueous Solution (New York, NY: John Wiley & Sons, 1998), 171–190.
J. Doucet, “Double Digestion: Technology that Leads Towards Quality and Efficiency” (Paper presented at the Third International Alumina Quality Workshop, Hunter Valley, New South Wales, Australia, October 17–21, 1993), 93.
A. Gurkaynak et al., “High-Temperature Degradation of Polyacrylic Acid in Aqueous Solution,” J. Polymer Sci. Part A: Polymer Chemistry, 34 (1996), 349–355.
J. Doucet, P. A. Ferland and L. Tremblay, “An Instrument to Analyze and Improve Red Mud Flocculation” (paper presented at the 4th International Alumina Quality Workshop, Darwin, Australia, June 2 7, 1996), 331.
J. Doucet, C. Hendriks, E. Pats. G. Forté, S. Kumar, R. Paradis and D. Puxley, “Pressure Decantation Technology: The Kaiser Gramercy Experience” (paper presented at the 6th International Alumina Quality Workshop, Brisbane, Australia, September 8–13, 2002), 94.
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© 2016 The Minerals, Metals & Materials Society
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Ferland, P., Malito, J.T., Phillips, E.C. (2016). Effects of Temperature and Method of Solution Preparation on the Performance of a Typical Red Mud Flocculent. In: Donaldson, D., Raahauge, B.E. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48176-0_59
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DOI: https://doi.org/10.1007/978-3-319-48176-0_59
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