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:
|
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 |
||
