Cake dewatering factor

The dewatering factor, combines the variables influencing the motion of liquids in the cake pores. The exponent y has been evaluated experimentally and literature-reported values range from 2.0 (for particles 1.8 mm in size) to 3.0 (for particles 0.09 mm in size). An average value of 2.5 may be assumed. A plot of... 

The disadvantages of the bottom feed arrangement can be overcome by using top feed drum filters, which use the nearly horizontal surface on the top of the drum. The area available for filtration is small, however, and only a limited pool of slurry can be contained within the feed box and the rims at the edges of the drum for cake formation. These two factors severely limit the application of this filter to fast settling solids that dewater readily and to... 

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