RESEARCH ON SLAG RESISTANCE OF MAGNESITE SPINEL BASED UNBURNED REFRACTORY MATERIALS
Using sintered magnesia and fused spinel as main raw materials,phenolic resin as binder,silica powders and Y2O3 as additives,the effects of additives and slag characteristics on the slag resistance of magnesite spinel based unburned refractory materials were systematically studied.The results showed that the higher the basicity of slag,the smaller the viscosity,and the easier it is to penetrate into the refractories.The addition of Al and Y2O3 was beneficial to improve the structure and properties of the materials.Y2O3 could regulate the grain growth of MgO and promote the sintering of the materials.Besides,Y2O3 reacted with CaO in slag to form CaYAlO4,which increased slag viscosity and improved slag corrosion resistance of refractories.
万方数据
维普
