| 摘要 |
A sintered refractory consists of 3-15% TiO2, 0.8-25% Cr2O3, 40-95% MgO, the sum of TiO2 + Cr2O3 + MgO being less than 75%, up to 15% Fe2O3, less than 7.5% Al2O3, less than 2% SiO2 and less than 1% CaO; the refractory comprising an intergrown mixture of periclase crystals and mixed magnesium spinel crystals, at least a major portion of the periclase crystals containing therein exsolved spinel crystals and discontinuous micro-cracks. Paraffin wax may be added to the unfired batch as a green binder. |
