Silica brick for Coke Oven

Silica brick is an acid refractory material, has good resistance to acid slag erosion, load softening temperature up to 1640 ~ 1670 ℃, in the high temperature long-term use of volume is relatively stable. Silicon dioxide content of 94% or more. True density 2.35g/cm3, with resistance to acidic slag erosion. Higher high temperature strength. Load softening start temperature 1620～1670℃. No deformation under high temperature for long term use. Low thermal shock stability (heat exchange in water for 1~4 times) with natural silica as raw material, plus an appropriate amount of mineralizing agent, in order to promote the conversion of quartz in the blank to, scale quartz. Slowly fired under reducing atmosphere by 1350 ~ 1430 ℃. When heated to 1450 ℃ there is about 1.5 ~ 2.2% of the total volume expansion, this residual expansion will make the cut joints close, to ensure that the masonry body has good airtightness and structural strength.

Application: mainly used in the partition wall of carbonization room and combustion room of coke oven, heat storage room and slagging room of steel furnace, even heat furnace, refractory material of glass melting kiln and ceramics firing kiln, etc. It is also used in the high temperature bearing part of hot blast furnace. It is also used in the high temperature load-bearing parts of hot blast stoves and the roofs of acid flat furnaces.