Aufbereitungstechnische Untersuchungen eines molybdänhaltigen Kupfer-Porphyr-Erzes

This study focuses on the development of a suitable analytical method and the investigation of flotation parameters for a porphyry copper-molybdenum-ore. For chemical analysis, the combination of fused beads preparation and X-ray fluorescence analysis proved to be a suitable and robust method. The preparation of stable fused beads was identified as a sensitive process requiring careful adjustment to the sample matrix, particularly regarding oxidation conditions, flux composition, and homogenization. The developed method demonstrated high reproducibility with a sulfur recovery of over 98,5% without significant losses. The use of secondary standards represented a cost-effective alternative to certified reference materials and provided acceptable overall accuracies, although limitations in calibration and measurement techniques were observed. During the flotation tests, both roughing and cleaning parameters were comprehensively evaluated. The study examined various reagents and their dosages, kinetic properties, as well as the influence of pH and particle size. In addition, the desorption of the collector from the chalcopyrite surface for Cu-Mo separation was successfully demonstrated using both chemical and thermal methods. The concentrates produced using the determined optimal parameters achieved grades and recoveries comparable to those of industrial plants and are considered marketable.