Numerical simulation of the continuous thickening of flocculated kaolinite suspensions

International Journal of Mineral Processing

Volumn 84, Issue 1-4, 2007, Pages 144-156

  Nasser, M S ^a   James, A E ^a  

^a UNIVERSITY OF MANCHESTER   (United Kingdom)

Author keywords

Compressive yield stress; Consolidation; Ideal continuous thickener; Kaolinite; Maple

Indexed keywords

COMPRESSIVE STRESS; COMPUTER SIMULATION; ELECTROLYTES; FLOCCULATION; SUSPENSIONS (FLUIDS); THICKNESS CONTROL; VOLUME FRACTION; YIELD STRESS;

COMPRESSIVE YIELD STRESS; FEED CHEMISTRY; IDEAL CONTINUOUS THICKENERS; SEPARATION EFFICIENCY;

KAOLINITE;

EID: 34548510909     PISSN: 03017516     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.minpro.2007.05.005     Document Type: Article

References (31)

1. Batchelor G.K. Sedimentation in dilute suspensions of spheres. Journal of Fluid Mechanics 52 (1972) 245
2. Bürger R., and Concha F. Mathematical model and numerical solution of the settling of flocculated suspensions. International Journal of Multiphase Flow 24 (1998) 1005-1023
3. Bürger R., and Concha F. Further development of software for the design and simulation of industrial thickeners. Chemical Engineering Journal 111 (2005) 135-144
4. Bürger R., Karlsen K.H., Klingenberg C.N., and Risebro H. A front tracking approach to a model of continuous sedimentation in ideal clarifier thickener units. Nonlinear Analysis: Real World Applications 4 (2003) 457-481
5. Bürger R., Damasceno J.J.R., and Karlsen K. A mathematical model for batch and continuous thickening of flocculated suspensions in vessels with varying cross-section. International Journal of Mineral Processing 73 (2004) 183-208
6. Bürger R., Karlsen K.H., and Towers J.D. Mathematical model and numerical simulation of the dynamics of flocculated suspensions in clarifier thickeners. Chemical Engineering Journal 111 (2005) 119-134
7. Buscall R., and White L.R. On the consolidation of concentrated suspensions. I: The theory of sedimentation. Journal of the Chemical Society. Faraday Transactions I 83 (1987) 873-892
8. Buscall R., Goodwin J.M., Ottewill R.H., and Tadros F. The settling of particles through Newtonian and non-Newtonian media. Journal of Colloid and Interface Science 85 (1982) 78-86
9. Buscall R., McGowan I.J., Mills P.D.A., Stewart R.F., Sutton D., White L.R., and Yates G.E. The Rheology of strongly-flocculated suspensions. Journal Non-Newtonian Fluid Mechanics 24 (1987) 183-202
10. Channell G.M., and Zukoski C.F. Shear and compressive rheology of aggregated alumina suspension. AIChE Journal 43 (1997) 1700-1708
11. Coulson J.M., Richardson J.F., Backhurst J.R., and Harker J.H. Chemical Engineering, Particle Technology and Separation Processes. 4th edition vol. 2 (1991), Butterworth Heinemann, Great Britain 979-981
12. De Kretser R.G., Scales P.J., and Boger D.V. Improving clay-based tailings disposal: Case study on coal tailings. AIChE 43 (1997) 1894-1903
13. De Kretser R.G., Boger D.V., and Scales P.J. Compressive rheology: an overview. Rheology Reviews 2003 (2003), British Society of Rheology 125-165
14. Dixon D.C. Momentum balance aspects of free settling theory. Continuous steady state thickening. Separation Science 12 (1977) 193-203
15. Fitch B. Two-dimensional model for the free settling regime in continuous thickening. AIChE Journal 36 (1990) 1545-1554
16. Frost R.C., Halliday J., and Dee A.S. Continuous consolidation of sludge in large scale gravity thickeners. Water Science and Technology 28 (1993) 77-86
17. Garrido P., Burgos R., Concha F., and Burger R. Settling velocities of particulate systems:13. A Simulator for batch and continuous sedimentation of flocculated suspensions. International Journal of Mineral Processing 73 (2004) 131-144
18. Green, M.D., 1997. Characterisation of suspensions in settling and compression, PhD Thesis, University of Melbourne.
19. Green M.D., and Boger D.V. Yielding of suspensions in compression. Industrial & Engineering Chemistry Research 36 (1997) 4984-4992
20. Howells I., Landman K.A., Panjkov A., Sirakoff C., and White L.R. Time-dependent batch settling of flocculated suspensions. Applied Mathematical Modelling 14 (1990) 77-86
21. Landman K.A., White L.R., and Buscall R. The continuous flow gravity thickeners: steady state behaviour. AIChE 34 (1988) 239-252
22. Landman K.A., White L.R., and Buscall R. Solid/Liquid separation of flocculated suspension. Advance in Colloidal and Interface Science 51 (1994) 175-246
23. Mahmood T., Amirtharajah A., Sturm T.W., and Dennett K.E. A micromechanics approach for attachment and detachment of asymmetric particles. Journal of Colloids Surfaces 177 (2001) 99-110
24. Michals A.S., and Bolger J.C. Settling rate and sedimentation volumes of flocculated kaolin suspensions. I & EC Fundmentals 1 (1962) 24-33
25. Miller K.T. Compressive yield stress of cement paste. Material Research Society 41 (1995) 285-291
26. Nasser M.S., and James A.E. Effect of polyacrylamide polymers on floc size and rheological behaviour of kaolinite suspensions. Colloids and Surfaces. A, Physicochemical and Engineering Aspects 301 (2007) 311-322
27. Raveendran P., and Amirtharajah A. Role of short-range forces in particular detachment during filter backwashing. Journal of Environmental Engineering 121 (1989) 860-868
28. Richardson J.F., and Zaki W.N. Sedimentation and fluidization: Part I. Transactions of the Institution of Chemical Engineers 32 (1954) 35-53
29. Tarrer A.R., Lim H.C., Koppel L.B., and Grady C.P.L. Model for continuous thickening. Industrial & Engineering Chemistry Process Design and Development 13 (1974) 341-346
30. Tiller F.M., and Khatib Z. The theory of sediment volumes of compressible, particulate structures. Journal of Colloidal and Interface Science 100 (1983) 56-67
31. Van Olphen H. Introduction to Clay Colloid Chemistry (1963), Interscience, New York