2066 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
of 20:80 and 50:50 showcase a decreasing trend from the
inner to the outer zones. In case of 20:80 feed mixture,
zone 1 displays average sizes of 39.35 µm for magnetite
and 28.29 µm for silica respectively and for the 50:50 feed
mixture, the corresponding average sizes are 44.82 µm for
magnetite and 25.65 µm for silica (Figure 6). The coarser
magnetite particles dominate zone 1 due to its strong
gravitational pull. Some finer silica particles associate with
the coarser magnetite particles during this initial stage of
separation. This contributes to observe the average size of
28.29 µm for silica. Except for zone 1, there is a systematic
decrease in average sizes, indicating effective concentration
of the denser magnetite particles towards the center. This
trend is more pronounced in silica, with a larger decrease
in average sizes from inner to outer zones. Zone 1, cor-
responds to the concentrate region, the size distribution
curves exhibit relatively less width for both magnetite and
silica compared to other zones, indicating minimal separa-
tion between the two components. Notably, the narrower
width in zone 1 suggests that the separation of magnetite
Figure 4. Segregation of pure component magnetite and silica in separation zones
of 20:80 and 50:50 showcase a decreasing trend from the
inner to the outer zones. In case of 20:80 feed mixture,
zone 1 displays average sizes of 39.35 µm for magnetite
and 28.29 µm for silica respectively and for the 50:50 feed
mixture, the corresponding average sizes are 44.82 µm for
magnetite and 25.65 µm for silica (Figure 6). The coarser
magnetite particles dominate zone 1 due to its strong
gravitational pull. Some finer silica particles associate with
the coarser magnetite particles during this initial stage of
separation. This contributes to observe the average size of
28.29 µm for silica. Except for zone 1, there is a systematic
decrease in average sizes, indicating effective concentration
of the denser magnetite particles towards the center. This
trend is more pronounced in silica, with a larger decrease
in average sizes from inner to outer zones. Zone 1, cor-
responds to the concentrate region, the size distribution
curves exhibit relatively less width for both magnetite and
silica compared to other zones, indicating minimal separa-
tion between the two components. Notably, the narrower
width in zone 1 suggests that the separation of magnetite
Figure 4. Segregation of pure component magnetite and silica in separation zones