Dave Dickey Forum Moderator 304 Posts
Re:31 August 2005 at 1:29pm
My analysis and understanding of the question asked:
7.0 m diameter tank
8.5 m straight side
300 cubic meter capacity
Milk of Lime suspension storage (not powder addition and dispersion)
Two impellers, each 84" (2.13 m) diameter
calculations done for two common turbine types: pitched blade and straight blade (pictured below)
Recommended speed for two pitched-blade turbines - 17 rpm (0.28 rps)
anticipated impeller power 3.12 kW (4.11 hp), suggested motor size 4.8 kW
Recommended speed for two straight-blade turbines - 16 rpm (0.27 rps)
anticipated impeller power 5.66 kW (7.45 hp), suggested motor size 9.0 kW
Other process conditions, impeller types, or additional information may result is different recommendations.
I have a tank (7-meter diameter 8.5-meter told), with and old agitator for milk of lime suspension and a double blade 84 inches wide each. At what RPM do I have to turn the blades in order to keep the lime in suspension at 8 or 10% of solid?
Have an insight or suggestion?
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