Silica brick is an acidic refractory material with good resistance to acid slag erosion. The softening temperature of the silica brick under load is as high as 1640~1670°C, the volume is relatively stable at high temperature, and it can be used for a long time.
An acidic refractory material mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phase. The silicon dioxide content is above 94%, the true density is 2.35g/cm3, it has resistance to acid slag erosion and higher high temperature strength. It will not deform after long-term use at high temperature. Low thermal shock stability (1~4 times of heat exchange in water) Natural silica is used as the raw material, and an appropriate amount of mineralizer is added to promote the conversion of quartz in the body to tridymite. Slowly fired at 1350~1430℃ under reducing atmosphere. When heated to 1450℃, there will be about 1.5~2.2% of the total volume expansion. This residual expansion will make the cut joints close and ensure that the masonry has good air tightness and structural strength.