532 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
A high-speed camera (Chronos 1.4) and an illuminator
are used to capture particle motion in detail. The size of
recording area is 50 mm*15 mm in the middle of platform,
shown as the pink rectangle in Figure 6. The recording
frame rate is 2134 frames per second.
In the experiments, the selection of particles and the
operating parameters are as detailed in Table 1. The par-
ticles used in these experiments were heated before testing
to reduce effects of moisture and aggregation. To prevent
charge breakdown, the amplitude is limited to 1500 V. In
the experimental research, the primary factors under inves-
tigation are frequency and particle size.
Ballotini was chosen as the primary particle material
due to its widespread use in various applications and experi-
mental research. Additionally, its spherical shape and uni-
form size make it a suitable choice. Four groups of narrow
Figure 5. Illustration of the experimental set-up. The yellow bars represent electrodes, which are
connected to three-phase voltage. The dark balls represent experimental particles
Figure 6. Schematic of operating parameters and system configuration and recording area (pink rectangle)
Table 1. List of experiment variables
Parameters Value Unit
Applied voltage wave type Sinusoidal wave
Applied voltage wave phases 3
Applied voltage frequency, f 20–800 Hz
Applied voltage amplitude, V
A 1500 V
Electrode width, d 1 mm
Electrode pitch, p 2 mm
Electrode length 200 mm
ETW board length 210 mm
Wavelength, λ 6 mm
Particle type Ballotini, PMMA
Particle size 30 to 400 µm
Particle polarity Positive, negative and neutral
kg/m3
Environment control Humidity
A high-speed camera (Chronos 1.4) and an illuminator
are used to capture particle motion in detail. The size of
recording area is 50 mm*15 mm in the middle of platform,
shown as the pink rectangle in Figure 6. The recording
frame rate is 2134 frames per second.
In the experiments, the selection of particles and the
operating parameters are as detailed in Table 1. The par-
ticles used in these experiments were heated before testing
to reduce effects of moisture and aggregation. To prevent
charge breakdown, the amplitude is limited to 1500 V. In
the experimental research, the primary factors under inves-
tigation are frequency and particle size.
Ballotini was chosen as the primary particle material
due to its widespread use in various applications and experi-
mental research. Additionally, its spherical shape and uni-
form size make it a suitable choice. Four groups of narrow
Figure 5. Illustration of the experimental set-up. The yellow bars represent electrodes, which are
connected to three-phase voltage. The dark balls represent experimental particles
Figure 6. Schematic of operating parameters and system configuration and recording area (pink rectangle)
Table 1. List of experiment variables
Parameters Value Unit
Applied voltage wave type Sinusoidal wave
Applied voltage wave phases 3
Applied voltage frequency, f 20–800 Hz
Applied voltage amplitude, V
A 1500 V
Electrode width, d 1 mm
Electrode pitch, p 2 mm
Electrode length 200 mm
ETW board length 210 mm
Wavelength, λ 6 mm
Particle type Ballotini, PMMA
Particle size 30 to 400 µm
Particle polarity Positive, negative and neutral
kg/m3
Environment control Humidity