高炉用钛基复合炭砖工艺研究

New titanium-based composite carbon brick for blast furnace

选用优质石墨化无烟煤做原料,引入一定比例的钛化合物和碳化硅,添加适当比例的硅粉和白刚玉,以沥青做黏结剂,采用振动成型方式,经高温热处理工艺制备了高炉用新型钛基复合炭砖。运用扫描电子显微镜(SEM)、X射线衍射(XRD)对产品进行了物理表征。结果表明,产品内部形成了碳化硅晶须、碳氧铝硅复合陶瓷相,产品具有优良的抗铁水溶蚀性、抗冲刷性、抗氧化性和炭素材料的高导热等性能。

A new titanium-based composite carbon brick for blast furnace is prepared using selected high-quality graphitized anthracite as raw material, asphalt as binder and a certain proportion of titanium compound,silicon carbide, silicon powder and white corundum as additive by adoption vibration molding through high-temperature heat treatment. The structures of the obtained product are characterized by using scanning electron microscope(SEM) and X-ray diffraction(XRD). The results show that the product is composed of silicon carbide whisker and aluminum carbon oxide composite ceramic phase, and has excellent corrosion resistance,erosion resistance, oxidation resistance and high thermal conductivity.