Abstract
ABSTRACT A new theoretical formula can be used to calculate superficial velocity for particle separation with a critical condition, and it is based on the size, density, terminal velocity, Reynold number of the particle, and equipment parameters. In a continuous system, a series of fractionation experiments were conducted to quantify the separation performance ranges for various operational factors, including channel spacing, solids throughput, and split fluidization rate. A great fluidization environment can be created by the 6 mm channel spacing, and the solids throughput of 10.20 t/(m2h) provides a well effective separation result in the narrow channels, and the split fluidization of 0.0058 m/s can produce a higher shear induce force in the inclined channels to prevent the low-density particles from being lost in the underflow. The theoretical superficial velocity calculated by the new formula is 0.042 m/s, which can report the particles up and down to 9-fold to the overflow, it is almost the equal to the actual superficial fluidization velocity of 0.04 m/s.
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