Abstract
In addition to classifying bulk material, vibration screens are commonly used in dewatering. However, the lack of a comprehensive physical theory of dewatering often leads to difficulties in the design and operation of the vibration screens. First, in this report, the dewatering of bulk material are shown based on a physical model. Because of the oscillatory motion of the liquid in the bulk, the inertial force of the accelerated liquid and the dripping of water out of the bulk or screen must be taken into special consideration. The physical model put forward shows the effect of the various operations parameters of dewatering screens. A comparison between dewatering theory and practice are shown by measurements using coal, limestone, etc. Dewatering measurements conducted on a vibration screen demonstrated that different vibration frequencies and rates of acceleration lead to different residual moistures. Finally, the possibility of improving vibration dewatering is described.
Similar content being viewed by others
References
Keller, K., and Stahl, W., 1994a, Chemical Engineering and Processing, November, pp. 331–336.
Keller, K., and Stahl, W., 1994b, Proceedings American Filtration and Separations Society, Chicago, Illinois, May 8–12, pp. 193–197.
Padday, J.F., and Pitt, A.R., 1973, Philos. Trans. R. Soc., London, Ser. A, 275, pp. 489–529.
Reif, F., et al., 1990, Mineral Processing, 31, pp. 117–125.
Stadger, C., Stahl, W., and M. Wünsch, 1992, Proceedings American Filtration and Separations Society, Chicago, Illinois.
Stahl, W., 1994, Proceedings Forschungsgesellschaft Verfahrenstechnik (GVT), Germany, September 19–23, Chap. XIII, pp. 1–25.
Author information
Authors and Affiliations
Additional information
SME nonmeeting paper 96–633. Discussion of this peer-reviewed and approved paper is invited and must be submitted, in duplicate, prior to May 31, 1997
Rights and permissions
About this article
Cite this article
Keller, K., Stahl, W. Vibration screens for dewatering — Theory and practice. Mining, Metallurgy & Exploration 14, 27–34 (1997). https://doi.org/10.1007/BF03402748
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03402748