Description
Direct bonded magnesia-chrome brick is a kind of refractory products primarily composed of periclase and magnesia-chromite spinel, bonded directly. This brick is made from high-purity sintered magnesia with less than 2% SiO₂and chromite as raw materials, produced through high-temperature sintering. The product has low impurity content and is fired at high and ultra-high temperatures, resulting in low porosity, high compressive strength, excellent wear resistance, corrosion resistance, thermal shock resistance, and spalling resistance.
Specification
| Item | Grade | ||||||
| ZMGe-16A | ZMGe-16B | ZMGe-12A | ZMGe-12B | ZMGe-8A | ZMGe-8B | DMGe-6 | |
| ω(MgO) / % ≥ | 60 | 58 | 68 | 65 | 75 | 70 | 75 |
| ω(Cr2O3) / % ≥ | 16 | 16 | 12 | 12 | 8 | 8 | 6 |
| ω(SiO₂) / % ≤ | 1.5 | 2.5 | 1.5 | 2.5 | 1.5 | 2.5 | 2.5 |
| Apparent Porosity / % ≤ | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| CCS / MPa ≥ | 40 | 40 | 45 | 45 | 45 | 45 | 45 |
| min35 | Min35 | min35 | Min35 | min35 | min35 | min35 | |
| R.U.L (0.2 MPa T0.6) / ℃ | 1670 | 1650 | 1700 | 1650 | 1700 | 1650 | 1700 |
Applications
Widely used in critical areas of industries such as metallurgy, cement, and non-ferrous metals;
Used in the slag line and severely corroded areas of secondary refining furnaces;
Used in the transition zone and burning zone of cement rotary kilns;
Used in areas such as the regenerator of glass furnaces.
