Abstract
On a sample of perovskite-bearing ore of the testing of reagents-collectors from the class of hydroxamic acids, differing in the structure of the hydrocarbon radical, was carried out. The reagents based on octanoic acid and acids of vegetable oils — coconut and tall oil — were considered. It is shown that in the alkaline pH range the rough flotation is more active, and a considerable amount of gangue minerals is transferred to the froth product. Strong attachment of the collector on all minerals determines low efficiency of re-cleaning operations in alkaline conditions. The optimum pH of flotation is pH = 6.2–6.5. Increase in the length of hydrocarbon radical above 10 carbon atoms leads to a significant decrease in the selectivity of the collector action. Reagents based on coconut and tallic acids actively float both perovskite and gangue minerals. Of the reagents considered, octylhydroxamic acid is characterized by the most optimal flotation properties and provides obtaining perovskite concentrate with TiO2 ~49–50 %.
Published Version
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