Impeller Location and Spacing Top Center Entering

For base tank dimensions, Z/T, (height/tank diameter) equal to 1.0 [29]  

For blending and solid suspension, use Z/T for minimum power at about 0.6 to 0.7, but recognize that this may not be the most economical. 

Draw-off of the mixed liquids influences the location of the impeller. For blending, the preferred impeller location in a Z/T =1.0 Vessel is at the midpoint of liquid depth for a continuous flow process, but may not be for a batch system. 

It is important to avoid zone mixing, when each impeller on a shaft (of more than one impeller) mixes its own zone, and then a stagnant or less- 

For radial flow turbine, locate 1.5D to 2.0D apart, with liquid coverage over the top impeller of minimum K to 3.0D, depending on surface motion desired. 

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