Abstract

The main technological indicators and factors contributing to improving the quality and economic efficiency of the production of fused-cast baddeleyite-corundum refractories are given. Optimization of the composition of the Bk-33 refractory makes it possible to obtain materials with high corrosion resistance, a glass-phase precipitation temperature above 1450 °C and a minimum tendency to release defects in the molten mass while observing the ZrO 2 : SiO 2 = 2 : 1 and SiO 2 : Na 2 O ≥ 12 mass ratios in it. Such quality indicators are achieved only if the technology of oxidative melting of refractories is implemented, including the arc mode of melting the charge and gas-air treatment of the melt. Ill. 3. Ref. 20. Tab. 2.

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