THE DETERMINATION OF SELENIUM AND MOLYBDENUM DISTRIBUTION IN URANIUM ORE AND MILL SOLIDS

摘要

The distributions of molybdenum and selenium in solid compounds in uranium ores and mill streams were studied. The methodology consisted of LA-ICP-MS analysis of mineral grains and of physical sample separation and subsequent characterization of the mineral concentrates by chemical analyses and X-ray diffractometry followed by correlation of the assay data. Results of the study indicated that selenium and molybdenum in the ore samples were not only present in sulphides, but to an even greater extent in phyllosilicates and uraninite, whereas in mill solids, they were absent in gypsum and likely adsorbed on iron hydroxides.