Preparation and Properties of Fused Zircon

Аннотация

Melting of zircon with added glass-forming oxides is reported. The structures of the synthesized materials were baddeleyite and a glassy phase, which determined the operating characteristics of the refractory. Corrosion tests of fused zircon samples in Al-alloy melts showed that they were not wetted and minimally corroded. Treatment of fused zircon with HF solution (10%) produced a material with <2% SiO₂. The silica content in the fused zircon decreased by three times with carbothermic melting in an electric arc furnace.