Audited Supplier
DDR30
Synthetic Material
1770< Refractoriness< 2000
Brick
Long Time Materials
Refractory Material
Nie
Export Wooden Pallet
322, 422, 622, 320, 420, 620
China
6902200000
Product Description
Description:
DDR30 Low thermal conductivity Anti-spalling Brick is one high quality refractory brick for Cement Rotary Kilns,made of Synthetic material, Clay.
Characteristics:
1.Outstanding resistance to alkali attack
2.Excellent thermal-shock resistance
3.Excellent abrasion resistance
4.Low thermal conductivity
5.Decreasing the kiln shell load, the mechanical stress on the lining
Application zone:
Safety zone, Pre-heating /Calcining zone in rotary kiln
Physical and chemical index
Comparision between DDR 30 and Silicon carbide brikcs
DDR30 Low thermal conductivity Anti-spalling Brick is one high quality refractory brick for Cement Rotary Kilns,made of Synthetic material, Clay.
Characteristics:
1.Outstanding resistance to alkali attack
2.Excellent thermal-shock resistance
3.Excellent abrasion resistance
4.Low thermal conductivity
5.Decreasing the kiln shell load, the mechanical stress on the lining
Application zone:
Safety zone, Pre-heating /Calcining zone in rotary kiln
Physical and chemical index
| Chemical composition | UNIT | SPEC | typical | |
| Al2O3 | % | ≤35 | 32 - 34 | |
| SiO2 | % | 62 - 64 | ||
| Fe2O3 | % | ≤1.8 | 1.6 | |
| Physical properties | UNIT | SPEC | typical | |
| Bulk Density | BD | g/cm3 | ≤2.2 | 2.1-2.2 |
| Apparent Porosity | AP | % | 16 | |
| Thermal Shock Resistance | TSR - in water at 1100 °C | cycle | ≥15 | 16 |
| Refractoriness Under Load | RUL (ta) | °C | ≥1310 | 1330 |
| Thermal Expansion | TE - at 1000 °C | % | 0.6 | |
| Cold Crushing Strength | CCS | MPa | ≥45 | 57 |
| Thermal Conductivity | TC - at 700 °C | W/mK | ≤1.5 | 1.5 |
| Alkali Resistance | 1100 °C*5h | First grade | ||
Comparision between DDR 30 and Silicon carbide brikcs
| Items | DDR30 | Sic bricks | Advantages of DDR30 |
| Alkali-resistant Test | fine | fine | To form erosion resistance layer on the surface, which protects the refractory grains from penetration of alkalis vapors |
| Anti-spalling | fine | fine | Avoids the alkali spalling without corrosion of kiln shell |
| Thermal conductivity | low | high | Decrease the shell temperature about 50-60ºC, heat loss and energy consumption. |
| Bulk density | 2.1 | 2.6 | Save 1.5 ton materials per meter of lining, decrease the electric current which save the electricity consumption |
| Usage life (5000t/d) | 3 years | Usage position: 40m-50m | |
| 5 years | Usage position: after 50m |
