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UDC (553.615: 549.613.3):666.76(470.55/.58) MORPHOGENETICAL CYANITE TYPES AS PROMISING RAW MINERALS FOR PRODUCTION OF HIGH-ALUMINOUS REFRACTORIES
V. N. Ogorodnikov, V. A. Koroteev, Yu. A. Polenov, A. N. Savichev, V. V. Babenko
The important scope of high-aluminous raw materials use is the production of high-refractories. The wide interest to high-aluminous refractory materials is caused by their high technical properties. The most essential is the significantly higher temperature of construction strength retention in comparison with fire clay and ordinary magnesite products. Aluminosilicate minerals with Al2SiO5 composition are effective type of refractory stuff. Such minerals are combined into the group of cyanite (cyanite [disthen], andalusite, sillimanite) and refers to the metamorphogene-metasomatic genetic type. Metamorphogene-metasomatic mechanism of cyanite deposits formation in pelitic sediments or in weathering crusts creates relatively stratified beds with large reserves, at most they are concentrated on the Kola Peninsula (Cave Formation), Siberia and in the Urals. It is represented by aluminous (cyanite) formation of shields and ancient platforms (metamorphogene, metamorphogene-metasomatic Cave type). Superposition of hydrothermal-metasomatic processes in suture zones on metamorphic rocks creates conditions for recrystallization of early formed metamorphogene minerals and forms metasomatic columns with a development of quartzites or quartz-vein formations in central zones with gouges of high-aluminous minerals, i.e. an aluminous formation of folded belts (hydrothermalmetasomatic, Ural type).
Key words: cyanite, fire clay, high-alumina refractories, Andree-Yulyevskaya cyanite placer.
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