Page 334 - Chemical Process Equipment - Selection and Design

298 MIXING AND AGITATION

SLURRY VOL. - m3
4 5 7 10 15 20 30 40 50 70 100

40
30 0
0
0

0.3 0.4 0.50.6 0.7 0.8 1.0 1.5 2.0
1000 2000 4000 6000 10000 20000 30000 ZIT
SLURRY VOL. - GALLONS
(a)
SETTLING VELOCITY (m/MIN.l

0 0.1 0.2 0.30.4 0.6
SETTLING VELOCITY (FT./MIN.)
(C)
Figure 10.8. Suspension of solids. Power and ratio of diameters of impeller and tank, with four-bladed 45" impeller,
width/diameter = 0.2. [method of Oldshue (1983)l. (a) The factor on power consumption for slurry volume, F'. (b) The
factor on power requirement for single and dual impellers at various h/D ratios, 4. (c) The effect of settling velocity
on power consumption, 4. (d) Suspension factor for various horsepowers: 4 = 844.