3. Numerical simulation and discussion
The technical parameters used are listed in Table 1. The physical
parameters of the particles and the screen deck model can be
found in Zhao et al. [9,11]. Feed particles included 80% small particles
of a diameter ratio from 0.2 to 0.7 (80%), nearly mesh-size particles
of a diameter ratio from 0.7 to 1.0 (15%), and oversized
particles of a diameter ratio from 1.0 to 1.5 (5%). The screening processes
used either a linearly, circularly, or elliptically vibrating
screen at a vibration frequency, amplitude and screen-deck inclination
of 14 Hz, 4 mm, and 3, respectively. The non-normal value
of the inclination for circular vibration of the screen-deck as
adopted for comparing the three different modes is shown in