Skip to main content
Log in

Settling phenomena in flocculated suspensions

  • Published:
Rheologica Acta Aims and scope Submit manuscript

Summary

A series of experiments on the batch settling of suspensions of micron-sized polyvinyl chloride spheres flocculated with potassium alum shows that the form of the settling curve is determined by the initial concentration of solids and the degree of flocculation. The characteristics of the settling curve, and the possibility that it is influenced by the height of the settling column of solids, can be predicted from yield stress measurements. The various forms of settling curve were also obtained with china clay suspensions although the solids concentrations producing comparable curves were appreciably less.

Zusammenfassung

Eine Reihe von Versuchen über das Absetzen von suspendierten mikrogroßen PVC-Kügelchen, die mit Kalium-Alaun ausgeflockt sind, zeigen eine AbhÄngigkeit dieses Prozesses von der Anfangskonzentration der Festkörper sowie dem Flockungsgrad.

Die Charakteristiken der Absetzkurve und die Möglichkeit ihrer Beeinflussung durch die Höhe der absetzenden FestkörpersÄule kann mit Hilfe von Fließgrenzenmessungen vorausgesagt werden.

Die verschiedenen Formen der Absetzkurven wurden auch mit Kaolinsuspensionen erhalten, jedoch bei viel geringerer Konzentration.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Obiakor, E. K. andR. L. Whitmore, J. Oil Colour Chem. Ass.47, 334 (1964).

    Google Scholar 

  2. Gaudin, A. M. andM. C. Fuerstenau, Engng Min. J.159, 110 (1958).

    Google Scholar 

  3. Richardson, J. F. andF. A. Shabi, Trans. Inst. chem. Engrs.38, 33 (1960).

    Google Scholar 

  4. Kearsey, H. A. andL. E. Gill, ibid.41, 296 (1963).

    Google Scholar 

  5. Obiakor, E. K., Ph. D. Thesis (Nottingham 1965).

  6. Langelier, W. F., H. F. Ludwig andR. G. Ludwig, Proc. Amer. Soc. civ. Engrs.78, no 118 p 1–18 (1952).

    Google Scholar 

  7. Hsi, H. R. andD. F. Clifton, Clay and Clay Minerals, 9th Edn., 271 (London 1962).

  8. Egolf, C. B. andW. L. McCabe, Trans. Amer. Inst. chem. Engrs.33, 620 (1937).

    Google Scholar 

  9. Michaels, A. S. andF. C. Bolger, Ind. and Engng. Chem.-Fundls.1, 24 (1962).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Obiakor, E.K., Whitmore, E.L. Settling phenomena in flocculated suspensions. Rheol Acta 6, 353–359 (1967). https://doi.org/10.1007/BF01984632

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01984632

Keywords

Navigation