The GB/T 23293-2009 standard specifies the classification of nitride-combined refractory products and their supporting refractory slurries. It specifies the technical requirements of products and slurries, including key indicators such as chemical composition and physical performance, and also covers test methods and inspection rules. The standard provides mass control basis for production enterprises to ensure that nitride-combined refractory products and their supporting slurry performance meet standards. In the high-temperature industrial field, such products are used to build kilns and other facilities, which can rely on good high temperature resistance and anti-erosion performance to ensure efficient and stable operation of facilities and help high-temperature industrial production.