Fundamental Studies on the Improvement of Fertilizer Distributors (I)

On the Relations between the Physical Property and Fluidity of Fertilizer

Abstract

Nine Kinds of fertilizers were investigated about the elementary physical property and fluidity, as one experiment of improvement studies of fertilizer distributors. The results obtained may be summarized as follows:
1. The flowing speed of fertilizer from the very narrow hole is chiefly affected by the size of particles.
2. There is found high significant correlation between fluidity and the angle of repose of fertilizer, in case of flowing out of a vertical round tube. The smaller this angle is, more the fluidity is.
3. The angle of repose varies chiefly by specific gravity, coefficient of shape and moisture content of fertilizer.
4. Experimented fertilizer can be classified into six groups, concerning to each fluidity and absorptiveness of water.