High Alumina Bricks
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China [CN]
Characteristics and Application of High Alumina Brick
High aluminum refractory brick belongs to the silicate aluminum refractory, it is a common refractory produced from refractory clay and high bauxite. The main mineral composition of these kinds of products is aluminum oxide, mullite and corundum, with good physical properties, through chemical analysis and physical experiments, the indexes such as refractoriness and soft charge all reach international and ministerial standards, Widely used in blast furnace, hot air stove, thermal storage room, machinery manufacturing, petrochemical and other industries.
High Physical and Chemical Indicators of High Alumina Brick
| Designation | Model | Refractoriness℃≧ | Load softening temperature℃ | Porosity%≦ | Room temperature compressive strength（Mpa） | Al2O3%≧ | Fe2O3% | |
| Electric Roof Brick | DL-80 | 1790 | 1550 | 17 | 85 | 80 | ||
| DL-75 | 1790 | 1530 | 18 | 80 | 75 | <1.7 | ||
| High Alumina Bricks for Blast Furnaces | GL-65 | 1790 | 1500 | 19 | 65 | 65 | 1.8 | |
| GL-55 | 1770 | 1490 | 19 | 65 | 55 | 1.8 | ||
| GL-48 | 1750 | 1460 | 18 | 60 | 48 | 1.8 | ||
| General High Alumina Brick | LZ-75 | 1790 | 1540 | 22 | 65 | 75 | 1.8 | |
| LZ-65 | 1790 | 1520 | 22 | 65 | 65 | 1.8 | ||
| LZ-55 | 1770 | 1500 | 21 | 65 | 55 | 1.8 | ||
| Clay Brick for Blast Furnace | ZGN-42 | 1750 | 1460 | 15 | 60 | 42 | 1.6 | |
| GN-42 | 1750 | 1450 | 16 | 50 | 42 | 1.6 | ||
High Aluminum Brick Features
1.Refractoriness
High alumina brick refractoriness is higher than clay brick and semi-silica brick refractoriness, up to 1750 ~ 1790 ℃, which belongs to high-grade refractory materials.
2.Load softening temperature
Because high-alumina products in the high Al2O3, less impurities, the formation of fusible glass less, so the load softening temperature than clay brick, but the mullite crystallization does not form a network of organizations, so the load softening temperature is still not higher than silica bricks.
3.Slag resistance
There are more Al2O3 in high alumina brick, close to the neutral refractory material, can resist the acid slag and alkaline slag erosion, because it contains SiO2, so the ability to resist alkaline slag resistance than acid slag weak.
Introduction of our company
Gongyi Taurus Refractory Material Factory is a professional refractory materials manufacturers and refractory materials suppliers,mainly supply Refractory Bricks,Unshaped Refractories,Silicon Carbide Refractory Castable,Castable Refractory Cement,Pouring Material,Castable Refractory Concrete,Silica Ramming Mass etc. series of refractory materials products, sincerely welcome everyone to visit.
Contact informations
Website:http://www.jnrefractory.com
Tel: +86-371-64372566
Fax: +86-371-64372588
Mobile Phone: +86-15137151612
Whatsapp: +86-15137151612
Email: info@jnrefractory.com
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