Low Cement Refractory Castable
product introduction:
Low cement castable refers to refractory castable with low cement content. The cement content of ordinary refractory castable is generally 15% to 20%, while the cement content of low cement castable is about 5%, and some even reduce to 1% to 2%. The purpose of reducing cement content is to improve the high temperature performance of the castable.
Product application:
Low cement castables are suitable for the linings of various heat treatment furnaces, heating furnaces, vertical kilns, rotary kilns, electric furnace covers, blast furnace tapholes, etc.; self-flowing low cement castables are suitable for the linings of integral spray guns for spray metallurgy, the high-temperature wear-resistant linings of petrochemical catalytic cracking reactors, and the outer linings of water-cooling pipes for heating furnaces, etc.
Welcome to contact us for our low cement castables and any information you want to know.
Performance Characters:
Low porosity and high bulk density
Good corrosion resistance
High compressive strength
Excellent high temperature performance
Item/Grade | High alumina low cement castable | Corundum low cement castable |
Al2O3； % | ≥60 | ≥80 |
Bulk density； g/cm3 | ≥2.4 | ≥2.8 |
Cold crushing strength； Mpa | 110℃×24h；≥60 1300℃×3h；≥100 | 110℃×24h；≥80 1500℃×3h；≥120 |
Modulus of rupture Mpa | 110℃×24h；≥8 1300℃×3h；≥12 | 110℃×24h；≥10 1500℃×3h；≥14 |
Permanent Linear Change On Reheating； % | 1300℃×3h ±0.5 | 1500℃×3h ±0.5 |
Maximum Service temperature ℃ | 1400 | 1600 |
Curing at room temperature not less than 72h | ||
