Abstract

A simple kinetic ball mill model proved adequate after testing with 100 sets of industrial grinding data. The essential components of the nnodel are (a) a breakage function determined from laboratory tests; (b) a mixers-in-series residence time distribution; and (c) a selection function derived from industrial data. Results show that the absolute selection function (SiH) is statistically invariant with changes in feedrate, feedsize distribution, and pulp density over the normal operating range. All the experimental and calculational procedures used in the calibration of the model are fully documented. This includes an examination of model residuals and a discussion of model reliability

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