Mullite Insulating Brick

Mullite insulating brick
properties:
·light weight brick good for energy conservation.
·low thermal conductivity and excellent heat resistance.
·good volume stability at high temperature.
Applications
·backup lining for fireclay and high alumina brick in boilers, ceramic kiln and high efficiency incinerators, etc.
·backup lining of cyclone preheaters and cooler in cement plant, hot gas generator, hot air direct stack and floor lining for kiln car, etc.
Item index
sjm-23 sjm-26 sjm-28 sjm-30
al2o3,%, ≥40 ≥55 ≥65 ≥70
fe2o3,%, ≤1.0 ≤1.0 ≤1.0 ≤1.0
classification temp,℃, ≥1260 ≥1430 ≥1540 ≥1650
bulk denstiy, gcm3 ≤0.55-0.60 ≤0.78 ≤0.88 ≤1.02
c.c.s.,mpa 1.2 1.6 2.1 2.5
bending resistant strength, mpa 0.9 1.4 1.8 2.0
linear change on reheating 24h, % 0.5 0.5 0.5 0.5
thermal conducivity, wm*k, 800℃ 0.18 0.31 0.36 0.41
thermal conducivity, wm*k, 1200℃ 0.35 0.41 0.46