Silica brick

Our company's silicon brick is mainly composed of squamous quartz, quartz and a small amount of residual quartz and glass phase of acid refractory material. Silica content above 94%. True density 2.35g/cm3. It is resistant to acid slag. High temperature strength. The starting temperature of load softening is 1620 ~ 1670℃. Long - term use at high temperature without deformation. The thermal shock stability is low (heat exchange in water is 1-4 times). Natural silica is used as raw material and an appropriate amount of mineralizing agent is added to promote the conversion of quartz in the billet to scaly quartz. It is slowly fired at 1350 ~ 1430℃ in reducing atmosphere. When heated to 1450℃, the total volume expansion is about 1.5~2.2%. This residual expansion will make the cutting joints close together and ensure the good air tightness and structural strength of the masonry body.

Advantages

Silicon brick can be divided into silicon carbide brick, coke oven silicon brick, glass kiln silicon brick, which belongs to acid refractory materials. It has good acid resistance, slag resistance and corrosion resistance, low thermal shock stability, long-term use at high temperature, relatively stable volume, with good air tightness and structural strength.

Application

Silicon brick is mainly used in coke oven carbonization chamber and combustor partition wall, steelmaking open hearth regenerator chamber and sediment chamber, heat furnace, glass melting kiln refractory materials and ceramic firing kiln and other kiln vault and other bearing parts. It is also used for the high temperature bearing part of hot blast stove and the top of acid open hearth furnace.