Influence of Sucrose Binder on the Oxidation Resistance of MgO-C Refractory

In this study, novel MgO-C refractories using environmentally friendly sucrose as binder were prepared. To solve the harmful effects of formaldehyde and phenolic compounds that cause serious harm to the environment and human health released during the development, production and use of phenolic resin binders for MgO-C refractories, MgO-C refractories using environmentally friendly sucrose instead of phenolic resins as binders were prepared. The phase, microstructure, oxidation resistance and the antioxidant mechanism of MgO-C refractories prepared by adding sucrose as binder at different temperatures were analyzed. The formula between the weight loss of the material and the temperature is y=1.6225x+0.215 (600°C ∼ 1200°C). The addition of aluminium resulted in the formation of Al₂O₃ inside the refractories. Meanwhile, MgAl₂O₄ crystals were synthesized by Al₂O₃ and MgO at high temperature. The formation of Al₂O₃ and MgAl₂O₄ played an important role in improving the oxidation resistance property of MgO-C refractories using sucrose as binder.