Secondary high-alumina hanging brick is a refractory material made of high-alumina bauxite as the main raw material, with the main component being alumina (Al₂O₃) with a content of not less than 65%.
It is made by using different grades of bauxite clinker and formula binder, and undergoing multi-level particle ratio high-pressure molding, drying and high-temperature firing. Secondary high-alumina hanging brick has good refractory performance and corrosion resistance, and is suitable for various high-temperature industrial furnaces and other environments.
(1) High refractoriness
(2) High wear resistance
(3) High refractoriness under load
(4) Fast heating during low temperature storage
(5) High compressive strength
(6) Excellent corrosion resistance
(1) Ceramic kilns: used for firing ceramic products.
(2) Glass kilns: used for glass production.
(3) Steel smelting furnaces: used for smelting steel.
(4) Other high-temperature equipment: such as cement kilns, fertilizer gasification furnaces, blast furnaces, hot air furnaces, coking furnaces, electric furnaces, foundry and steel-casting bricks, etc.
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Item |
Index |
||||
|
Model |
SK35 |
SK36 |
SK37 |
SK38 |
SK39 |
|
Al2O3/% |
≥48 |
≥55 |
≥65 |
≥75 |
≥80 |
|
Fe2O3/% |
≤2 |
≤2 |
≤2 |
≤2 |
≤2 |
|
Body density（g/cm3） |
2.15 |
2.2 |
2.3 |
2.4 |
2.5 |
|
Refractory |
≥1750 °C |
≥1770 °C |
≥1790 °C |
≥1790 °C |
≥1790 °C |
|
Change in heating permanent line/% |
1450℃×2h -0.4~0.1 |
1450℃×2h -0.4~0.1 |
1450℃×2h -0.4~0.1 |
1500℃×2h -0.4~0.2 |
1500℃×2h -0.4~0.2 |
|
Cold pressing strength |
≥39Mpa |
≥44Mpa |
≥49Mpa |
≥54Mpa |
≥65Mpa |
|
Apparent porosity (≤) |
≤22% |
≤22% |
≤23% |
≤23% |
≤21% |
|
Load softening temperature [0.2MPa*0.6%]≥ |
≥1420 °C |
≥1470 °C |
≥1500 °C |
≥1520 °C |
≥1530 °C |
