Product Overview
High alumina brick is kind of alumina silicate refractory material, made of superior bauxite and other additives at high temperature, with Al2O3 content above 48%. With unique advanced technology, the normally max service temperature is above 1420~1550℃. Classification by Al2O3 content: SK38, SK37, SK36, SK35, the shapes include standard bricks, irregular bricks, specific bricks.
Product Characteristics
01.
Higher refractoriness under load (RUL)
02.
Good thermal shock resistance
03.
Good chemical erosion resistance
04.
Low apparent porosity
Application
High alumina brick can be widely used in blast furnace, EAF, steel ladle, boiler, lime & cement kiln, glass kiln etc.
Specification should be different according to different furnaces/kilns, standard shapes and customized drawings are acceptable.
Product Specifications
| Item | SK38 | SK37 | SK36 | SK35 |
| Al2O3% | ≥75 | ≥65 | ≥55 | ≥48 |
| Fe2O3% | ≦2 | ≦2 | ≦2 | ≦2 |
| Bulk Density(g/cm3) | 2.4-2.65 | 2.3-2.35 | 2.25-2.3 | 2.1-2.2 |
| Refractoriness℃ | ≥1790 | ≥1770 | ≥1750 | ≥1750 |
| Apparent Porosity% | ≦24 | ≦24 | ≦24 | ≦24 |
| Cold Crushing Strength Mpa | ≥53.9 | ≥49.0 | ≥44.1 | ≥39.2 |
| Refractoriness Under Load (0.2Mpa) ℃ | ≥1520 | ≥1500 | ≥1470 | ≥1420 |
