Abstract
M.Sc. (Geology)
This study involves the quantitative analysis of fluorspar-containing
slurries by two X-ray diffraction methods, whereby these
two methods of on-stream analysis are compared. The first method
involves a single counter with a diffracted beam monochromator,
and the second method involves a fixed geometry with an incident
beam monochromator. The second method is a cheaper and more
robust apparatus, which can withstand the harsh environment of
the flotation plants.
A new algorithm was developed for a more accurate calibration
method. Programmes for calibration, recalibration and measuring
of unknown samples were developed.
The measuring apparatus was interfaced with a microcomputer for
computerised operation of the system.
Results from both methods were comparable, with more accurate
results obtained for the feed and tailings than for the
concentrate samples. The single detector apparatus can thus be
replaced by the fixed geometry model, which is less expensive and
more robust.