The major components of the silica brick

Mainly composed of tridymite, cristobalite phase composition as well as a small amount of residual quartz and glass acidic refractories. The silica content of 93% or more. True density 2.38g/cm3. Acid resistant residue erosion performance. High-temperature strength. Refractoriness under load at 1620 to 1670 ° C. Long-term use of deformation at high temperatures. 600 ° C or more general non-crystal transformation. Small temperature coefficient of expansion. High thermal shock resistance. 600 ° C or less, more crystal transition, larger volume change, the thermal shock resistance deteriorates. Natural silica as a raw material, plus the appropriate amount of mineralizing agent, to promote the conversion is phosphorus quartz quartz blank. 1350 to 1430 ° C slow firing in a reducing atmosphere. The regenerator and sediment chamber of the silica brick is mainly used for the carbonization chamber and the combustion chamber of the coke oven walls, open hearth furnace, soaking furnace, the glass melting furnace, the firing of ceramics and refractories kiln furnace vault and other load-bearing parts. Also used for high-temperature load-bearing parts of the hot stove and acid open-hearth furnace roof.