High alumina castable

Description

ItemLow cement castableUltra-low cement castableCement free castable
SPC-45SPC-70SPC-85SPUC-45SPUC-70SPUC-85SPW-45SPW-45SPW-45
Chemical composition, %Al2O3≥45≥70≥85≥45≥70≥85≥45≥70≥85
CaO≤2.5≤2.5≤2.5≤1.5≤1.2≤1.0
Modulus of rupture, MPa100℃ drying≥6≥10≥12≥5≥6≥10≥2≥3≥4
℃×3h calcination1300℃
≥8
1500℃
≥12
1500℃
≥12
1300℃
≥10
1500℃
≥12
1500℃
≥15
1300℃
≥9
1500℃
≥10
1500℃
≥12
Permanent linear change, %℃×3h1350℃
±0.5
1500℃
±0.5
1500℃
±0.5
1350℃
±0.5
1500℃
±0.5
1500℃
±0.5
1350℃
±0.5
1500℃
±0.5
1500℃
±0.5
Bulk densityg/cm3≥2.3≥2.7≥3.0≥2.3≥2.7≥3.0≥2.3≥2.7≥3.0
Working temperature140015001600140015001600140015001600
ApplicationLining of various furnace & kiln