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APPLICATION OF COMPLEXING REAGENTS-COLLECTORS IN RARE-METAL AND RARE-EARTH ORE
Abstract
The possibility to use complexing reagents-collectors in floating different rare-earth and rare-metal ore has been studied. A prognostic assessment has been performed of efficiency of organic heteropolar compounds as flotation reagents-collectors on the basis of moleculeпїЅs energy parameters. The interaction has been considered of rare-earth and rare-metal minerals such as eudialite, zirconium, loparite and columbite with complexing reagents. Gain in energy (??) has been calculated by computer modeling at formation of model compounds of a collector with the crystal lattice ion on minerals surface. The possibility has been studied of additional flotation recovery of rare-earth and rare-metal minerals from fine-grained waste resulted after columbite and loparite ore processing. The alkylhydroxamic acids were used in floating tails left after gravity concentration of columbite ore with content of 0.065% Nb2O5, 0.0075% ??2?5 and 0.098% ZrO2. This has ensured production of collective concentrate with content of 7.939-12.185% ZrO2 and 4.430-6,780% Nb2O5. From loparite slimes with content of 0.17 % Nb2O5 was produced the loparite product and dump flotation tails with content less 0.05% Nb2O5.
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