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Measurement of velocity fields in ball mills

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Abstract

This paper describes a computer vision technique used in measuring the velocity field related to the motion of balls in a ball mill. A camera combined with two color flashes facing an experimental ball mill is used to take pairs of pictures by triggering the flashes in sequence with a time interval Δt. In order to ensure consistency, the pictures are of different colors and in a single frame. The ball positions in each image are detected by image-processing techniques, and the velocity is then the displacement of each ball between two successive images divided by Δt. The measurement error is estimated by measuring the displacements from a pair of images when the balls remain stationary.

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References

  1. Aggarwal, J.K. andNandhakumar, N., “On the Computation of Motion from Sequences of Images—A Review,”Proc. IEEE,76 (8),917–935 (August1988).

    Article  Google Scholar 

  2. Bhanu, B., Nevatia, R. and Riseman, E.M., “Dynamic-scene and Motion Analysis Using Passive Sensors, Part II: Displacement-field and Feature-based Approaches,” IEEE Expert, 53–64 (February 1992).

  3. Dunn, D.J. and Martin, R.G., “Measurement of Impact Forces in Ball Mills,” Min. Eng., 384–388 (April 1978).

  4. Horn, B.K.P., Robot Vision, MIT Press, Cambridge, MA, Ch.8, 161–184 (1987).

    Google Scholar 

  5. Lukasiewicz, S.A., Swisterski, W. and Romaniszyn, G., “Supercritical Revolutions of Tumbling Mills,” Minerals & Metallurgical Processing, 100–106 (May 1990).

  6. McIvor, R.E., “Effects of Speed and Liner Configuration on Ball Mill Performance,” Min. Eng., 617–622 (January 1985).

  7. Mishra, B.K. and Rajamani, R.K., “Numerical Simulation of Charge Motion in Ball Mills—Lifter Bar Effects,” Paper presented at the SME Annual Meeting, Phoenix, AZ (February 24–27, 1992).

  8. PC-SCOPE Manuel d'Utilisation IDS542, Version 3.0, i2S, Bordeaux, France (1989).

  9. Vermeulen, L.A., “The Lifting Action of Lifter Bars in Rotary Mills,”J. South Afr. Inst. Min. Metall,85 (2),41–49 (February1985).

    Google Scholar 

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Authors and Affiliations

  1. Unité Production et Machines (PRM), Université Catholique de Louvain, Institut Stévin, Place du Levant 2, B-1348, Louvain-la-Neuve, Belgium

    L. -S. Kung (Doctoral Student) & J. -C. Samin (Professor)

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  1. L. -S. Kung
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  2. J. -C. Samin
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Kung, L.S., Samin, J.C. Measurement of velocity fields in ball mills. Experimental Mechanics 36, 251–257 (1996). https://doi.org/10.1007/BF02318015

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  • DOI: https://doi.org/10.1007/BF02318015

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