Abstract

The transport of sand—water slurries through a rotating, horizontal open-end drum was investigated. The effects of the slurry feed solids concentration, particle size, slurry feed rate, drum rotational speed and fluid surface tension on the drum hold-up were examined. The experimental results showed that the drum slurry hold-up and the hold-up solids concentration are strong functions of the slurry feed solids concentration, particle size, and drum speed. The effect of the water feed rate on the solids motion in the drum was found to be insignificant for the coarse ( d 50 = 2.0 mm) particles and that the solids hold-up in the drum can be predicted using the Kramers and Crookewit's model for flow of dry solids through rotary drums. The concentration of the solids within the drum was found to be higher than that of the slurry feed. The fluid surface tension had no effect on the drum slurry hold-up for the range of variables considered.

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