Abstract
The pressure-filtration behaviors of dispersed and flocculated alumina slurries at high percent solids were investigated with the objective of determining the effect of surfactant type and concentration on slurry properties. A high-purity alumina powder was used as a model solid. Dispersion of the alumina was controlled by pH and by surfactants that are known to act as electric and steric stabilizers. The effects of both ionic and nonionic surfactants were investigated. Surface charge measurements of the slurries were carried out by an electrokinetic sonic amplitude (ESA) method to better understand the mechanisms. The effect of surfactant type and concentration on the kinetics of pressure filtration and cake properties are discussed.
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Bhattacharya, I.N., 1997, “Settling and filtration characteristics of fine alumina trihydrate slurry,” International Journal of Mineral Processing, Vol. 49, pp. 107–118.
Bridger, K., Tadros, M., Leu, W., and Tiller, F., 1983, “Filtration behavior of suspensions of uniform polystyrene particles in aqueous media,” Separation Science and Technology, Vol. 18 (12-13), pp. 1417–1438.
Cannon, D.W., 1993, New developments in electroaqustic methods and instrumentation,” NIST Special Publication No: 856, pp. 40–66.
Cesarano III, J., Askay, I.A., and Bleier, A., 1988, “Stability of aqueous a-alumina suspensions with poly(methacrylic acid) poly-electrolyte,” Journal of American Ceramic Society, Vol. 71, No. 4, pp. 250–255.
Chen, W., and Scott, K.J., 1997, “Sedimentation,” in Handbook of Powder Science and Technology, Second Ed., M. E. Fayed and L. Otten, eds.), pp. 635–678.
Dahlstrom, D.A., 1985, “Thickening, filtering drying,” in SMEMineral Processing Handbook, Part 2, pp. 9, 14–26.
Depoy, L, Bridger, K., Tadros., Tiller, F.M., and Leu, W., 1985, “Filtration behavior of uniform polystyrene particles in aqueous media. II. Effects of coagulation and particle size,” Proceedings of International Symposium, Workshop on Particulate and Multiphase Process, Miami Beach, FL, May.
Grace, H.P., 1953, “Resistance and compressibility of filter cakes,” Chemical Engineering Progress, Vol. 49, No. 7, pp. 367–378.
Harvey, M.A., Bridger, K., and Tiller, F.M., 1988, “Apparatus for studying incompressible and moderately compressible cake filtration,” Filtration and Separation, Vol. 25, No. 1, pp. 21–29.
Hidber, P.C., Graule, T.J., and Gaukler, L.J., 1996, “Citric acid — A dispersant for aqueous alumina suspensions,” Journal of American Ceramic Society, Vol. 79, No. 7, pp. 1857–1867.
Hirata, Y. and Onoue, K., 1995, “Pressure filtration of aqueous alumina suspension,” European Journal of Solid State Inorganic Chemistry, Vol. 32, pp. 663–672.
Kozicki, W., 1990, “Factors affecting cake resistance in non-Newtonian filtration,” The Canadian Journal of Chemical Engineering, Vol. 68 pp. 69–80.
Kozicki, W., and Slegr, H., 1994, “Filtration in viscoelasticcontinua,” Journal of Non-Newtonian Fluid Mechanics, Vol. 53, pp. 129–149.
Landman, K.A., Sirakoff, C., and White, L.R., 1991, “Dewatering of flocculated suspensions by pressure filtration,” Physics and Fluids, Vol. 41, No. 7, pp. 1687–1700.
Lange, F.F., and Miller, K.L., 1987, “Pressure filtration: Consolidation kinetics and mechanics,” American Ceramic Society Bulletin, Vol. 66, Vol. 10, pp. 1498–1504.
Najafi, M.F., and Theliander, H., 1995, “Determination of local filtration properties at constant pressure,” Separation Technology, Vol. 5, pp. 165–178.
Rushton, A., Hosseini, I., and Hassan, I., 1980, “The effects of velocity and concentration on filter cake resistance,” Journal of Separation Process and Technology, Vol. 1, No. 3, pp. 35–41.
Ruth, B.F., 1935, “Studies in filtration III. Derivation of general filtration equations,” Industrial and Engineering Chemistry, Vol. 27, No. 6, pp. 708–723.
Shirato, M., Murase, T., and Iwata, M., 1986, “Deliquoring by expression-theory and practice,” in Progress in Filtration and Separation, R.J. Wakeman, ed., Vol. 4, pp. 181–286.
Tiller, F.M., and Hsyung, N.B., 1995, “Role of porosity in filtration: XII. Filtration with sedimentation,” American Industrial Chemical Engineers Journal, Vol. 41, No. 5, pp. 1153–1164.
Velamakanni, B.V. and Lange, F.F., 1991, “Effect of interparticle potentials and sedimentation on particle packing density of bimo-dal particle distribution during pressure filtration,” Journal of American Ceramic Society, Vol. 4, No. 1, pp. 166–172.
Wakeman, R.J, Sabri, M.N, and Tarleton, E.S., 1991, “Factors Affecting the formation and properties of wet compacts,” Powder Technology, Vol. 65, pp. 283–292.
Zhu, S., Prakash, T.S., and Moudgil, B.M., 1994, “Filtration of phosphogypsum in the presence of polymeric additives,” in Dispersion and Aggregation, B.M. Moudgil and P. Somasundaran, eds., pp. 565–574.
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Sis, H., Chander, S. Pressure filtration of dispersed and flocculated alumina slurries. Mining, Metallurgy & Exploration 17, 41–48 (2000). https://doi.org/10.1007/BF03402827
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DOI: https://doi.org/10.1007/BF03402827