Process Flow Charts and Recommendations for Processing of Bauxite with Increased Contents of Iron and Fine Particles of Valuable Components
V. I. Rostovtsev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Ferruginous bauxite, processing improvement, thermal treatment, accelerated electron treatment, magnetic sensitivity, dry magnetic separation, phase heterogenization, recovery, rare earths, rare metals, fine particles, valuable components
Abstract
The author investigated the modes of thermal and heat-and-radiation treatment of ferruginous bauxite from Vezhayu-Vorykva deposit and revealed different mechanisms of mineral transformations. Under thermal treatment, oxo-hydroxides transform into anhydrous iron and aluminum oxides, while under heat-and-radiation treatment, scattered microelements form metal alloys and new minerals. It is recommended to ground ferruginous bauxite processing on basic science, first of all, nanomineralogy, and on phenomenon of phase heterogenization. This approach can promote an increase in recovery of fine particles of aluminum and other valuable components from low-grade bauxite and red mud by eco-friendly techniques.
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