In this work, author tried to determine the rate of lateral solid mixing in gas-solid fluidized bed, using sodium chloride particles as a tracer.
The rate of solid mixing of different particle diameters （100∼140, 60∼140, 60∼100 mesh） has been observed to depend upon gas velocity, and the empirical correlation has been found as follow :
W = αexp（bu）, a, b = const.
Based on the rate of mixing determined in small scale apparatus, author proposed one of convenient scale-up procedure considered to be very important in the design of industrial scale plant.