3560 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
in the profile image are all widely distributed in all angles,
which shows a good pore structure, and the contour struc-
ture of the tailings regenerated aggregate particles can be
seen in the 3D image, and the shape of the particles is intact
without any obvious deformation[Tang et al., 2019].
Analysis of Pore-Connected and Closed Pores of
Permeable Brick Samples
The pores in permeable bricks can be classified into con-
nected pores and closed pores, in order to further study
the pore structure in tailings permeable bricks, the inte-
rior of the permeable bricks was scanned in sections, and
according to the image reconstruction algorithm, a three-
dimensional image was reconstructed to calculate the
porosity of the permeable bricks[Tang et al., 2019]. The
total pore distribution of permeable bricks was counted by
threshold segmentation[]. The proportion of total pores
(including connected and closed pores) to the total sample
size was 11.07%, and the distribution of pores is shown
in Figure 10(A). Using the computer software VOLUME
GRAPHICS STUDIO MAX to judge the connectivity of
the extracted pores, the connecting pores were separated
from the closing pores, and the connectivity judgement of
the extracted pores could be divided into connecting pores
(yellow part of Figure 10B) and closing pores (red part of
Figure 10C), which accounted for the volume percentage
of the total samples were 10.62% and 0.45%, the percent-
age of connected pores is significantly higher than that of
closed pores, which indicates that the samples are better
connected.
Pore Network Model Simulation
After obtaining the 2D and 3D images of the permeable
bricks, the pore space topology needs to be extracted and
a mathematical model constructed to obtain a ball-and-
stick model of the interior of the permeable bricks. The
Figure 10. Total pore distribution(A)/ Distribution of connected (B)/closed pores (C) of permeable bricks
in the profile image are all widely distributed in all angles,
which shows a good pore structure, and the contour struc-
ture of the tailings regenerated aggregate particles can be
seen in the 3D image, and the shape of the particles is intact
without any obvious deformation[Tang et al., 2019].
Analysis of Pore-Connected and Closed Pores of
Permeable Brick Samples
The pores in permeable bricks can be classified into con-
nected pores and closed pores, in order to further study
the pore structure in tailings permeable bricks, the inte-
rior of the permeable bricks was scanned in sections, and
according to the image reconstruction algorithm, a three-
dimensional image was reconstructed to calculate the
porosity of the permeable bricks[Tang et al., 2019]. The
total pore distribution of permeable bricks was counted by
threshold segmentation[]. The proportion of total pores
(including connected and closed pores) to the total sample
size was 11.07%, and the distribution of pores is shown
in Figure 10(A). Using the computer software VOLUME
GRAPHICS STUDIO MAX to judge the connectivity of
the extracted pores, the connecting pores were separated
from the closing pores, and the connectivity judgement of
the extracted pores could be divided into connecting pores
(yellow part of Figure 10B) and closing pores (red part of
Figure 10C), which accounted for the volume percentage
of the total samples were 10.62% and 0.45%, the percent-
age of connected pores is significantly higher than that of
closed pores, which indicates that the samples are better
connected.
Pore Network Model Simulation
After obtaining the 2D and 3D images of the permeable
bricks, the pore space topology needs to be extracted and
a mathematical model constructed to obtain a ball-and-
stick model of the interior of the permeable bricks. The
Figure 10. Total pore distribution(A)/ Distribution of connected (B)/closed pores (C) of permeable bricks