STUDY ON THE OSCILLATION PHENOMENA OF PARTICLE SIZE DISTRIBUTION DURING THE SEEDED AGGLOMERATION OF SODIUM ALUMINATE LIQUORS

摘要

Chaotic and Fractal theories were used to study the oscillation phenomena of particle size distribution (PSD) during the agglomeration process of sodium aluminate liquors. Conclusions were made as follows: PSD of particles is in macroscopic disorder, while it is regular in certain range; Curves of PSD appear to oscillate sometimes, but particles of certain range own general rules in the whole process. That is, the curves of PSD oscillating decrease with time for small and median particles, but increase for large particles; The minor change of initial conditions can be enlarged in the process and the particles size information will be affected. As a result, the butterfly effect of the PSD appears; curves of PSD have the space fractal characters for particles of certain ranges. Preciser structure of curves can be identified if smaller divided rule of particle size is adopted.