... Application: Silica fume in refractory1.Enhancing the fluid of pouring refractory, reducing the volume of used water, be easy to ... untramicrostructure for gap filling, the compact and intensity of refractory gain rising by a wade margin.3.Silica fume is ... Al2O3 exists, enhance elevated temperature strength and thermal shock of refractory.Silica Fume in Concrete1. Making high-grade concrete effectively ...