Stirring radius size

Thread Content

Generally, for slurry impellers, the d/D ratio is 0.35~0.8. A more reasonable value: For liquid-liquid dispersion operations, in order to prevent the light-phase components from concentrating near the axis and to ensure that the dispersed phase is evenly distributed throughout both the central and peripheral areas of the tank, d/D=1/3 should be adopted. The same is true for gas-liquid dispersion operations. Under these conditions, when the power consumption is constant, the mass transfer rate is high. When operating in a solid-liquid suspension mode, different slurry diameters can be used for different types of tank bottoms to facilitate the agitation of solid particles at the bottom of the tank. Flat circular tank: d/D=0.45~0.5 ； Elliptical bottom circular tank: d/D=0.4 ； Semi-spherical bottom circular tank: d/D=0.3 ； For special liquid-liquid emulsification mixing, in order to achieve high shear capacity, the impeller must rotate rapidly, and the slurry diameter to tank diameter ratio is smaller, typically ranging from 1/6 to 1/10. For turbine-type impellers, the d/D ratio is 0.2 to 0.5. Propeller impellers have a large axial flow rate and strong volumetric circulation capacity; the most common value for d/D is 1/3. A propeller typically has 3 blades ； Typical turbine blades number 6 ；