Fused zirconium dioxide production at JSC «Pervouralsk Dinas Plant»

Abstract

The theoretical calculation was carried out in the article for the relative service wear resistance of the refractory materials with various chemical and mineral compositions. On the ground of the thermal energy density it was established that among all the oxides with highest refractory properties (melting point being more than 2500 °C) the zirconium dioxide stands first on the list. Among the available high-temperature refractory minerals
(compounds) of other chemical classes the ZrO2 is exceeded in the relative service resistance only by the graphite and silicon carbide (α-SiC). On the ground of our investigation the technology regulations were developed, as well as the processing line was mounted and the industrial production of the fused partially stabilized zirconium (PSZ) was realized. The PSZ is used in the production of the zirconium-graphite immersion nozzles for the continuous casting machines. Ill. 4. Ref. 8. Tab. 5.