Refractory brick/Fire proof brick
High alumina bricks for blast furnace
LZ-75,LZ-65,LZ-55 High Alumina Brick
Features:
1) high tempreture endurable 2) good thermal shock resistance 3) good thermal insulation performance
It is one of our main products whose main mineral is mullite and corundum phases, with excellent high-temperature physical properties and chemical corrosion resistance, widely used in any parts of blast furnace with good work-ability. It has been used in large volume blast furnace with a good result.
Specifications:
Index | High Alumina Brick for Blast furnace | ||
LZ-75 | LZ-65 | LZ-55 | |
Al2O3, % ≥ | 75 | 65 | 55 |
Fe2O3,% ≤ | 2.0 | 2.0 | 2.0 |
Refractoriness,°C≥ | 1790 | 1790 | 1770 |
Liner change on reheating(1500°C*2h) | 0~-0.2 | 0~-0.2 | 0~-0.2 |
0.2Mpa Refractoriness under load, °C≥ | 1520 | 1500 | 1480 |
Apparent porosity, % ≤ | 19 | 19 | 19 |
Cold crushing strength, ≥ | 70.0 | 58.8 | 49.0 |
Refractory brick High alumina bricks for blast furnace