CT-30 Unfired Refractory Brick for Rotary Kiln
Description
- CT firebricks are made from high-purity refractory clays, temperature of use ranging from 1100 oC to 1700 oC, each grade is formulated to meet specific thermal and physical requirements.
- With graduated additions of alumina for higher temperature products
- Carefully grade d organic filler
- The organic filler burns out during manufacture to give a uniform, control pore structure.
Features
- low thermal conductive, low heat storage
- purity
- good thermal insulation, enable the use of thin-walled constructions
- the good alumina contents confer good refractoriness
- iow iron and alkali fluxcontent contributes to their stability to reducing atmosphere
- these can be machined to special shapes, incurring fewer sections and joints
Typical Application
- Recommended for use as primary hot face refractory lining or as back-up insulation behind other refractories in furnaces, kiln, flues, heaters, regenerators, stress relieving furnaces,etc
| Material Type |
CT-30 |
| Classification Temperature (ºC) |
1550±30 |
| Density (kg/m3) |
1000±50 |
| Cold Crushing Strength (MPa) |
2.7±0.1 |
| Cold Modulus Rupture (MPa) |
1.6±0.1 |
| Permanent Linear Change(1230ºC×4h) |
0.8±0.1% |
| Linear Thermal Expansion |
0.49±0.05% |
| Thermal Conductivity ºC |
|
| Mean Temperature, ºC |
W/(m·k) |
| 400 |
0.38 |
| 600 |
0.41 |
| 800 |
0.43 |
| 1000 |
0.45 |
| Chemical Analysis |
% |
| Al2O3 |
70±2 |
| Fe2O3 |
0.7±0.1 |
| SiO2 |
25±2 |
| TiO2 |
0.45±0.01 |
| CaO |
0.4±0.01 |
| MgO |
0.1±0.01 |
| K2O |
0.56±0.01 |
| Na2O |
0.1±0.01 |
| Dimensional Tolerances(mm) |
±0.5 |
Product pictures
Office in Nanjing
Factories in China
Project
Audited Supplier 
){kind=link}
){kind=link}