yixing haiyu refractory co.,ltd
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first-order refractory brick high temperature regenerative kiln furnace hearth incubation
product name: refractory high aluminum brick grade 1
product description:
Refractory brick material is a kind of material that can withstand a certain temperature. It is an inorganic non-metallic material with a refractoriness of not less than 1580 °C and can resist high temperature sudden change and slag erosion and can withstand high temperature load.
High alumina brick : Super high alumina brick is a kind of neutral refractory material with alumina content not less than 80 %. It is made from bauxite or other raw materials with high alumina content by molding and calcination. The thermal stability is high, and the refractoriness is above 1770 °C. In addition, high-alumina bricks are also widely used as regenerative checker bricks for flat furnaces, stoppers for gating systems, and nozzle bricks. General high alumina brick ( i.e. T-shaped brick ), special-shaped high alumina brick, blast furnace brick ( i.e. G-shaped brick ).
product index:
| Item | First grade high alumina brick | Secondary high alumina brick | Three grade high alumina brick | special high alumina brick |
| AL2O3 %≥ | 75 | 65 | 55 | 82 |
| Fe2o3 %＜ | 2.5 | 2.5 | 2.6 | 2 |
| volume density g/cm3 | 2.5 | 2.4 | 2.3 | 2.6 |
| cold crushing strength MPa＞ | 70 | 60 | 50 | 80 |
| load softening temperature ℃ | 1510 | 1460 | 1420 | 1550 |
| refractoriness ℃＞ | 1790 | 1770 | 1770 | 1790 |
| apparent porosity % | 22 | 23 | 24 | 21 |
| linear change rate % | -0.3 | -0.4 | -0.4 | -0.2 |
Refractory brick construction pictures:
