DRAMITUFF is a single component, air setting, castable. It has a very good abrasion resistance, cold crushing strength and chemical resistance.
It can be hand packed or rammed in thin lining applications.
DRAMITUFF is based on a proven binder system, which allows a wide range of water addition, giving working times of 30-60 minutes. Enhanced workability and non-slumping features achieve greater installation productivity. Excellent adhesion properties make the product ideal for patch repairs.
DRAMITUFF can be installed by hand placing, ramming, guniting. DRAMITUFF can be gunned, with low rebound losses, using standard gunning equipment and needle valve water control, thickness of 127 mm have been successfully achieved.
Properties :
| DRAMITUFF STANDARD VERSION Troweling, hand placing, guniting | ||
|---|---|---|
| TEMPERATURE – °C | 350 °C | 815 °C |
| DENSITY | 2.76 | 2.76 |
| COLD CRUSHING STRENGTH C.C.S. – N/mm² | 147 | 145 |
| ABRASION LOSS – Cm3 | < 4.00 | < 4.00 |
| ABRASION LOSS – Cm3 | – 0.15 | – 0.30 |
| M.O.R. – N/mm² | 31 | 34 |
| MIXING WATER – % | 4.9 – 6 | |
Thermal Conductivity @ 815°C is 1.50 – 1.70 W / M.k
Workability: 30 to 60 minutes
Maximum service temperature: 1250 °C
Chemical analysis :
| AI2O3 | SiO2 | Fe2O3 | TiO2 | CaO | Other |
|---|---|---|---|---|---|
| 76.2 | 15.1 | 1.1 | 2.79 | 2.53 | 2.28 |
DRAMITUFF HEATING SCHEDULE
1°) For all linings that are less than 50 mm thick: Ambient operating temperature at 50 °C per hour up to required temperature. No hold points.
2°) For all linings that are more than 50 mm thick:
- 2-1: Air dry for 48 hours.
- 2-2: Heat the linings at a maximum rate of 50 °C per hour to 110 °C, hold at this temperature 1 hour for each 25 mm lining thickness.
- 2-3: Heat the linings at a maximum rate of 50 °C per hour to 350 °C, hold at this temperature 1 hour for each 25 mm lining thickness.
- 2-4: If required, continue heating schedule at 50 °C per hour to desired final temperature and hold at this temperature as described above.
It is recommended that there is no flame impingement onto the linings during drying / heat curing and the work is carried out by a qualified engineer.
TYPICAL APPLICATIONS:
- Cement
- Incineration
- Coal Heated power plants
- Dams
- Iron & Steel
- Pneumatic transport
- Aluminium
- Fluidised bed boilers
