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.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:uj/uj:4584 |
| Date | 02 April 2014 |
| Creators | Clark, Wilma |
| Source Sets | South African National ETD Portal |
| Detected Language | English |
| Type | Thesis |
| Rights | University of Johannesburg |
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