1924 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Figure 8 illustrates that the intense diffraction peaks in
the concentrate corresponded to the quartz and magnetite.
The diffraction peaks of hematite were significantly weak-
ened after reduction, and the corresponding diffraction
peaks of magnetite were appeared, indicating that hematite
was transformed into magnetite. As quartz had not fully
dissociated from the iron minerals, the diffraction peaks of
quartz were examined in the XRD pattern of concentrate.
In addition, two low-intensity peaks of hematite were iden-
tified in the tailing, resulting from unreduced hematite,
with the intense diffraction peak being quartz. Therefore,
the XRD analysis demonstrate that the minerals phase
transformation can achieve the accurate transformation of
hematite to magnetite.
Figure 7. The XRD pattern of samples at different reduction temperatures (a) and reduction times (b)
Figure 8. The XRD pattern of samples before and after minerals phase transformation
Figure 8 illustrates that the intense diffraction peaks in
the concentrate corresponded to the quartz and magnetite.
The diffraction peaks of hematite were significantly weak-
ened after reduction, and the corresponding diffraction
peaks of magnetite were appeared, indicating that hematite
was transformed into magnetite. As quartz had not fully
dissociated from the iron minerals, the diffraction peaks of
quartz were examined in the XRD pattern of concentrate.
In addition, two low-intensity peaks of hematite were iden-
tified in the tailing, resulting from unreduced hematite,
with the intense diffraction peak being quartz. Therefore,
the XRD analysis demonstrate that the minerals phase
transformation can achieve the accurate transformation of
hematite to magnetite.
Figure 7. The XRD pattern of samples at different reduction temperatures (a) and reduction times (b)
Figure 8. The XRD pattern of samples before and after minerals phase transformation