1502 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
XRT Sensor Response
Figure 7 shows the SRK/BML dual-energy XRT sensor
lab unit with the tray of particles loaded into the machine
before being scanned. Particles up to 80 mm can be tested
within limits of higher atomic density material. Scanning
takes a few seconds to complete and the associated software
generates an XRT colourised map of the particle set (see
Figure 8).
Sorted Group Hardness
As noted, the XRT particle groupings are tested using the
HIT device to estimate A*b values. Figure 9 shows an exam-
ple set of results for four ore and two waste samples ranging
in average A*b from 58 to 121 (higher A*b indicates softer
material). The error bars show the range of A*b measured
on the ‘high’, ‘medium’, ‘low’ and ‘barren’ XRT groupings
which, at times, show significant differences in hardness.
Source: SRK 2024
Figure 5. Normalized broken particle distributions at different specific energy levels
Source: SRK 2024
Figure 6. Differential breakage (metal upgrade) under different specific energy levels
XRT Sensor Response
Figure 7 shows the SRK/BML dual-energy XRT sensor
lab unit with the tray of particles loaded into the machine
before being scanned. Particles up to 80 mm can be tested
within limits of higher atomic density material. Scanning
takes a few seconds to complete and the associated software
generates an XRT colourised map of the particle set (see
Figure 8).
Sorted Group Hardness
As noted, the XRT particle groupings are tested using the
HIT device to estimate A*b values. Figure 9 shows an exam-
ple set of results for four ore and two waste samples ranging
in average A*b from 58 to 121 (higher A*b indicates softer
material). The error bars show the range of A*b measured
on the ‘high’, ‘medium’, ‘low’ and ‘barren’ XRT groupings
which, at times, show significant differences in hardness.
Source: SRK 2024
Figure 5. Normalized broken particle distributions at different specific energy levels
Source: SRK 2024
Figure 6. Differential breakage (metal upgrade) under different specific energy levels