METHOD OF PREPARING ZIRCONIUM FUSED CORUNDUM AND CRYSTALLIZER FOR PREPARATION THEREOF Russian patent published in 2006 - IPC C01F7/38 C04B35/10 C30B35/00 

FIELD: abrasive materials.

SUBSTANCE: invention is destined to provide high-strength corundum materials suited to manufacture of abrasive disks. Method of invention comprises preparing alumina-zirconium blend, fusing it from below and introducing reducer under surface of melt through the bed of blend in the second half-melting, tapping melt, and crystallization and cooling thereof. When being tapped and crystallized melt is protected against contact with air oxygen. Crystallizer contains metal vessel with upright metallic plates mounted inside the vessel with gaps between them. Crystallizer further has a holder to mount plate set. Outline of the lower part of plates follows outline of the vessel bottom. In the top part of each plate, V-shaped cut is made so that all cuts form together longitudinal groove to pour melt.

EFFECT: increased stability of physical structure on cooling, increased strength of grain and improved performance characteristics of abrasive tool, reduced laboriousness and material loss during crystallization operation, spared consumption of metallic reducer, and prolonged service time of crystallizer.

3 cl, 1 dwg, 1 tbl