Skip to main content
SpringerLink
Log in

The mass transport of slurry and solid in a laboratory overflow ball mill

  • Published:
Mining, Metallurgy & Exploration Aims and scope Submit manuscript

Abstract

Slurry densities and holdup were measured for open circuit grinding tests in a laboratory overflow ball mill of 03 m diam by 0.6 m long, by emptying and drying after stoppage of the mill. Contrary to some other results in the literature, there was negligible variation of slurry level in the mill as a function of flow rate over a range of increase of flow rate of about 5 to 1. However there was a gradual increase of solid holdup at higher flow rates because the slurry density in the mill increased. Equations are given for holdup and slurry density in the mill as a function of overflow diam, ball load, and feed slurry density. The average level of slurry necessary to give overflow was found to be much higher than that necessary to fill the mill to the overflow level at rest. The total level of balls and slurry was only increased slightly by ball loads higher than the overflow level. The overflow diam appeared to be the major controlling factor in determining the mill holdup.

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

Access this article

Log in via an institution

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

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Austin, L. G., and Tangsathitkulchai, C., “Comparison of Methods for Sizing Ball Mills Using Open-Circuit Wet Grinding of Phosphate Ore as a Test Example,” I & EC Processing Des. and Dev., in press.

  • Austin, L. G., et al., 1983, “The Axial Mixing Model Applied to Ball Mills,” Powder Technology 36, pp. 199–126.

    Article  Google Scholar 

  • Austin, L.G., Klimpel, R.R. and Luckie, P.T., 1984, The Process Engineering of Size Reduction: Ball Milling, AIME, New York, NY, 561 pp.

    Google Scholar 

  • Herbst, J.A., Lo, Y.C., and Rajamani, K., 1985, “Population Balance Model Predictions of the Performance of Large-Diameter Mills,” Minerals & Metallurgical Processing, Vol. 2, No. 2, pp. 114–120.

    Google Scholar 

  • Kinneberg, D. J. and Herbst, J. A.; 1984, “A Comparison of Linear and Nonlinear Models for Open Circuit Ball Mill Grinding,” International Journal of Mineral Processing, vol. 13, pp. 143–165.

    Article  Google Scholar 

  • Klimpel, R.C. and Austin, L.G., 1988, “An Investigation of Wet Grinding in a Laboratory Overflow Ball Mill,” Minerals & Metallurgical Processing, vol. 6, No. 1, pp. 7–14.

    Google Scholar 

  • Lippek, E., 1982, “Durchsatzabhängigkeilt von Verweilzeit und Malhlgutmasse im Rohrmuhlen Untershiedlicher Gross,” Freiberger Forschungshefts, vol. A658, pp. 43–52.

    Google Scholar 

  • Marchand, J. C., Hodouin, D., and Everell, M. D., 1980, “Residence Time Distribution and Mass Transport Characteristics of Large Industrial Mills,” Proceedings 3rd IFAC Symposium, J. O’Shea and H. Polis, eds., Pergammon Press, pp.295–302.

  • Mori, Y., Jimbo, G., and Yamazaki, M., 1964, “On the Residence Time Distribution and Mixing Characteristics of Powders in Open-Circuit Ball Mill,” Kagaku Kogaku, vol. 28, pp. 204–213.

    Article  Google Scholar 

  • Mori, Y., Jimbo, G., and Yamazaki, M., 1967, “Flow Characteristics of Continuous Ball and Vibration Mills,” Proceedings 2nd European Symposium. Zerkleinein, H. Rumpf and W. Pietsch eds., Dechema Monographien, vol. 57, No 993–1026, pp. 605–632.

  • Moys, M. H., 1986, “The Effects of Grate Design on the Behavior of Grate-Discharge Grinding Mills”, International Journal of Mineral Processing, 18, pp. 85–105.

    Article  Google Scholar 

  • Rogers, R. S. C., and Austin, L. G., 1984, “Residence Time Distributions in Ball Mills,” Particulate Science and Technology, vol 2, pp. 191–209.

    Article  Google Scholar 

  • Rogers, R. S. C. and Gardner, R.P., 1979, “Use of a Finite-Stage Transport Concept for Analyzing Residence Time Distributions of Continuous Processes,” Journal American Institute of Chemical Engineers, vol. 24, pp. 229–240.

    Article  Google Scholar 

  • Rogers, R. S. C., Austin, L. G., and Brame, K. A., 1986, “Mill Sizing for Phosphate Grinding in Mills of 0.2 to 5 Meters in Diameter,” Minerals & Metallurgical Processing, Vol. 3, No. 4, pp. 240–246.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. El du Pont de Nemours, New Johnsonville, Tn, USA

    R. C. Klimpel (member SME, research and development engineer)

  2. The Pennsylvania State University, University Park, PA, USA

    L. G. Austin (members SME professor of fuels and mineral engineering, and professor of mineral processing) & R. Hogg (members SME professor of fuels and mineral engineering, and professor of mineral processing)

Authors
  1. R. C. Klimpel
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. L. G. Austin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. R. Hogg
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

M&MP paper 88–643. Discussion of this paper must be submitted, in duplicate, prior to July 31, 1989.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Klimpel, R.C., Austin, L.G. & Hogg, R. The mass transport of slurry and solid in a laboratory overflow ball mill. Mining, Metallurgy & Exploration 6, 73–78 (1989). https://doi.org/10.1007/BF03402530

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03402530

Search

Navigation