1987 Volume 13 Issue 5 Pages 717-720
Soma sand with size of 500 to 1000 μm was crushed by a screen mill in the range of impact velocity from 32.3 to 91.0 m/s. The increase in specific surface of the product was found to be proportional to about 0.61-th power of the measured electric energy consumption in crushing of unit weight of material. A new representative quantity of energy consumption in crushing is proposed as the product of the apparent frequency of impact crushing during the mean residence time and the kinetic energy of unit weight of particles. It was shown that our new quantity had a good correlation with the electric energy consumption in crushing, since the quantity also exhibited similar power dependency.
