Abstract
The solids density that is achieved in residue areas, washer underflows or on filters varies considerably with bauxite type. In particular Jamaican mud settles to a much lower g/l solids than those derived from most other bauxites. A fundamental study of the physical properties that affect solids density was undertaken to determine if the differences could be explained. This included particulate modelling based on particle interactions. Various characteristics of muds were measured including particle size, porosity, surface area, mineralogy and absorptivity. Sizing of muds was complicated by the effect of pH on sizing. Those data, together with the particulate modelling, enabled predictions of differences in solids densities that compared well with those obtained in practice. Comparisons between muds must be on a volume/volume basis.
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References
N. Pashias “The Characteristics of Bauxite Residue Suspensions in Shear and Compression” PhD Thesis, Departement of Chemical Engineering, University of Melbourne, October 1997
P. Basu, “Reactions of Iron Minerals in Sodium Aluminate Solutions”, Light Metals 1983 pp. 83–97.
N.B. O’Donnell and W. Martin, “The Commercial Processing of Goethitic Bauxites from West Jamaica”, Light Metals 1976 Vol 2 pp. 35–147.
R. M. German, Particle Packing Characteristics, Metal Powder Industries Federation, Princeton, New Jersey, 1989.
A. B. Yu, J. Bridgwater and A. Burbidge, “On the modelling of the packing of fine particles”, Powder Technol., 92 (1997) 185–194.
T. Allen, Particle Size Measurement, 3rd edn, Chapman and Hall, London, 1981.
R. P. Zou and A. B. Yu, “Evaluation of the packing characteristics of monosized non-spherical particles”, Powder Technol, 88 (1996) 71–79.
A. B. Yu and R. P. Zou, “Prediction of the porosity of particle mixtures: a review”, KONA Powder and Particle, 16 (1998) 68–81.
C. L. Feng and A. B. Yu, “The effect of liquid addition on the packing of monosized coarse spheres”, Powder Technology, 99 (1998) 22–28.
Zwicker J. D “The Generation of Fines Due to heating of Alumina” Light Metals 1985 pp 177–196
A. B. Yu, R. P. Zou and N. Standish, “Modifying the linear packing model for predicting the porosity of nonspherical particle mixtures”, Industrial & Engineering Chemistry Research, 35 (1996) 3730–3741.
R. P. Zou, C. L. Feng and A. B. Yu, “Evaluation of the Interaction Functions for Porosity Calculation of Mixtures of Wet Particles”, Proc. 1st Asian Particle Technol Symposium, Bangkok (Thailand), Dec 2000.
A. B. Yu, N. Standish and L. Lu, “Coal Agglomeration and Its Effect on Bulk Density”, Powder Technology, 82 (1995) 177–189.
Ho GE, Robertson W A, Roach G I D and Antonovsky A “ A morphological study of Bayer process desilication product and its application to laboratory plant digests” Ind. Eng. Chem. Res. 31, 982–86, 1992
J. Farrow and L. Warren, “Measurement of the size of aggregates in suspension”, Coagulation and Flocculation: Theory and Applications, Dobias, B. (Ed.), Marcel Dekker, New York, 1993, 391–426.
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© 2016 The Minerals, Metals & Materials Society
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Roach, G., Jamieson, E., Pearson, N., Yu, A.B. (2016). Effect of Particle Characteristics on the Solids Density of Bayer Mud Slurries. In: Donaldson, D., Raahauge, B.E. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48176-0_56
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DOI: https://doi.org/10.1007/978-3-319-48176-0_56
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