Abstract
Corundum suitable for production of corundum and high-alumina refractories may be obtained by reduction electric melting of Northern Onega bauxites in arc furnaces. The cost of such corundum is 25–30% less than of corundum melted from commercial alumina, and the total energy consumptions taking into consideration the production of alumina are a third. It would be desirable to organize production of large production lots of corundum from bauxites using the existing facilities of the abrasive industry for reduction melting of bauxites in arc furnaces. Development of the melting method, more accurate determination of the scales of use of corundum in refractory production, and organization in the future of production of corundum from bauxites in one of the refractory plants are necessary.
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