Grade 3 high alumina bricks are a kind of neutral refractory material, the main component of which is alumina (Al₂O₃), with a content of not less than 48%.
Made by using different grades of bauxite clinker and formula binder, after molding and calcination, they have high thermal stability and refractoriness, and are mainly used for open-hearth heat storage checker bricks, plugs for pouring systems, sprue stones, etc.
(1) High refractoriness
(2) High refractoriness under load
(3) Strong slag resistance
(4) High compressive strength
(5) Good stability
(6) Good wear resistance
(1) Iron and steel manufacturing industry: blast furnace, hot blast furnace, electric furnace, ladle, tundish, heating furnace, refining furnace, heating furnace, annealing furnace, cupola
(2) Nonferrous metal industry: smelting furnace, refining furnace, reverberatory furnace, converter furnace.
(3) Building materials industry: cement kiln, glass kiln, ceramic kiln, lime kiln, kiln car, tunnel kiln
(4) Energy and incineration: coke oven, circulating fluidized bed boiler, carbon roaster, incinerator.
|
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 |
High alumina poly light brick is a high quality lightweight refractory material.
High alumina poly light brick is a high quality lightweight refractory material
