Fired Magnesite (MGT)
The Magnesite brick is one of the most widely used basic refractory bricks and are made of periclase as the main crystal phase. Different grade magnesites used as raw materials to produce Magnesia bricks of various qualities. Synthetic magnesite and dead burnt magnesite, low in iron, boron and silica are used as raw materials for magnesite brick production. Their categorization is based on the CaO/SiO2 ratio. One reason for the poor Spalling resistance is a high coefficient of thermal expansion. Magnesite has the highest thermal expansion coefficient among all Refractories. Their excellent resistance against basic slags and alkali oxides is typical for these products. Magnesite bricks are widely used in the basic zone of metallurgical furnaces, non-ferrous furnaces and regenerator chambers of glass furnaces
Advantages
- High Refractoriness
- Anti-erosion Properties
- Slag Protection Cover
- Durability under abrasive operating environment
- Spalling Resistance
Magnesite Bricks
| Brand | MgO % (Min) | SiO2 % (Max) | CaO % (Max) | AP % (Max) | BD gm/cc (Min) | CCS kg/cm² (Min) | RUL Ta °C (Min) | PLC % (Max) | Service Temp °C (Max) | Application Area |
|---|---|---|---|---|---|---|---|---|---|---|
| GITA - MGT - 85R | 80(±2) | 6 | 2.5 | 22 | 2.75 | 400 | 1530 | ±0.5 @ 1500 °C | 1530 | Rolling Mill Bottom |
| GITA - MGT - 85 | 85 | 5.5 | 2.5 | 20 | 2.80-2.85 | 350 | 1550 | ±0.5 @ 1550 °C | 1580 | Furnace & LD Convertors, Back Lining |
| GITA - MGT - 90 (D) | 90 | 4 | 2 | 18 | 2.85 | 450 | 1580 | ±0.5 @ 1550 °C | 1650 | Safety Lining EAF & BOF |
| GITA - MGT - 92 | 91 | 4.5 | 3 | 17 | 2.90 | 500 | 1550 | ±0.5 @ 1500 °C | 1700 | ADD,EAF&BOF |
| GITA - MGT - 95 | 94 | 2.5 | 1.8 | 17 | 2.90 | 500 | 1600 | 1700 | Ferrous & Non-Ferrous |