XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1503
The range of impact breakage results represent a change in
crushing specific energy from 74% to 170% of the baseline
requirement. In other words, XRT sorted groups can also
segregate material into significantly different comminution
specific energy requirements: hard, medium and soft com-
ponents of plant feed.
Flowsheet Simulation
For each sample tested, this protocol provides estimates on
the bypass fraction (amount and grade) along with what
proportion would be present in different size fractions (e.g.,
60×25 mm and 100×60 mm) and their respective metal
grades. In addition, the XRT response curve would estimate
the amount of material that could be rejected, its grade as
well as the hardness of any rejected or accepted stream. The
objective of the SRK test protocol is to simulate a crushing,
screening and XRT sensor sorting flowsheet—all from 10kg to
50kg of material.
At this time, the current sensor in the SRK/BML lab
unit is dual-energy XRT however, there is capacity and
functionality to add and combine with an additional XRF
sensor. Opportunities to assess colour of each particle test
Source: SRK 2024
Figure 7. SRK/Base Metallurgical Labs XRT sensor unit
Source: SRK 2024
Figure 8. Example particle tray with dual-energy XRT colourised map
The range of impact breakage results represent a change in
crushing specific energy from 74% to 170% of the baseline
requirement. In other words, XRT sorted groups can also
segregate material into significantly different comminution
specific energy requirements: hard, medium and soft com-
ponents of plant feed.
Flowsheet Simulation
For each sample tested, this protocol provides estimates on
the bypass fraction (amount and grade) along with what
proportion would be present in different size fractions (e.g.,
60×25 mm and 100×60 mm) and their respective metal
grades. In addition, the XRT response curve would estimate
the amount of material that could be rejected, its grade as
well as the hardness of any rejected or accepted stream. The
objective of the SRK test protocol is to simulate a crushing,
screening and XRT sensor sorting flowsheet—all from 10kg to
50kg of material.
At this time, the current sensor in the SRK/BML lab
unit is dual-energy XRT however, there is capacity and
functionality to add and combine with an additional XRF
sensor. Opportunities to assess colour of each particle test
Source: SRK 2024
Figure 7. SRK/Base Metallurgical Labs XRT sensor unit
Source: SRK 2024
Figure 8. Example particle tray with dual-energy XRT colourised map