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High alumina bricks: Among the refractory materials produced with aluminum-silicon raw materials,Al203Bricks classified as main components include high alumina bricks, mullite bricks and corundum bricks.
275*230*115*113*75mm
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Product Description
High alumina refractory bricks are formed and calcined from bauxite or other raw materials with high alumina content. Generally, high-alumina bricks are made of high-quality bauxite clinker, supplemented by combined clay and additives. The refractoriness is above 1650℃. There are also processes such as crushing→mixing→molding→drying→firing→inspection→packaging.
characteristic:
The product has high refractoriness, good acid and alkali corrosion resistance, high high temperature strength, good thermal shock stability, excellent high temperature mechanical properties and chemical corrosion resistance, good creep performance, and excellent thermal shock resistance.
High alumina bricks are mainly used for lining blast furnaces, hot blast furnaces, electric furnace tops, blast furnaces, reverberatory furnaces, and rotary kilns. In addition, high alumina bricks are also widely used as open-hearth regenerative checker bricks, plugs for pouring systems, nozzle bricks, etc.
project | LZ-80 | LZ-75 | LZ-65 | LZ-55 |
Al2O3% ≥ | 80 | 75 | 65 | 55 |
Refractory degree ℃ ≥ | 1790 | 1790 | 1790 | 1770 |
0.2MPa heavy softening starting temperature ℃ ≥ | 1530 | 1520 | 1500 | 1470 |
Apparent porosity% ≤ | 22 | 23 | 23 | 22 |
Normal temperature compressive strength MPa ≥ | 70 | 60 | 49 | 44 |
Reheat line change % 1500℃x2h | 0.1~-0.4 | |||
0.1~-0.3 | ||||
