High Alumina Bricks are refractory bricks whose Al2O3 content is no less than 48%. There are three grades of high alumina bricks, first grade, second grade and third grade. If you want high alumina bricks price low, quote from Rongsheng Kiln Refractory Company! If you want qualified high alumina bricks of these three grades, Rongsheng Refractory Company can satisfy you! Just Email RS to get the cheap price!
Definition Of High Alumina Bricks
High alumina bricks mean high alumina fire bricks or high alumina refractory bricks, belonging to aluminosilicate refractories. The percentage of Al2O3 in high alumina brick is more 48%. High alumina bricks are calcined from bauxite or other raw materials containing Al2O3content and is a neutral refractories.
Components Of High Alumina Bricks
According to the different resource conditions and product requirements, the following kinds of raw materials can be used: high alumina bauxite mainly composed of hydrous alumino oxygen mineral (bauxite, gibbsite, etc.); sillimanite minerals (including kyanite, andalusite, sillimanite, etc.); synthetic raw materials, such as industrial alumina, synthetic mullite, electrofusion corundum, etc. China’s high alumina vanadium soil is rich in resources and excellent in texture. High alumina vanadium soil is mainly a mixture of two kinds of minerals, diaspore and kaolinite.
Application Of High Alumina Bricks
High alumina brick is commonly used to make the lining of steel-making electric furnace, glass melting furnace blast furnace, reverberatory furnace and cement rotary furnace due to its good slag resistance. Some high load soft and low creep high alumina brick made from high-grade bauxite,fused corundum and electrofusion are suitable for large and medium sized hot blast furnace, for its advantages of strong corrosion and good thermal stability.
In addition, high alumina bricks are also used as open hearth furnace heat storage lattice bricks, plug heads for casting systems, and nozzle blocks.
High Alumina Bricks Properties
- Refractoriness is high, above 1770℃.
- High thermal stability.
- High load soft.
- Low creep.
- Good slag resistance performance.
- Good erosion resistance performance.
- Refractoriness under load is above 1420℃, higher than fireclay brick.(The temperature degree increases with the increase of Al2O3 content.)
High Alumina Bricks And Shapes
T3 230*114*65mm
Rongsheng Kiln Refractory Company is a supplier of high alumina bricks and shapes. If you are going to find high alumina refractory bricks manufacturer, go and find Rongsheng Refractory company
Classification Of High Alumina Bricks
Based On Al2O3 Component
- First grade: Al2O3 ≥75%
- Second grade: Al2O3 60~75%
- Third grade: Al2O3 48~60%
Based On Mineral Composition
- Low mullite brick.
- Mullite brick.
- Mullite-corundum brick.
- Corundum-mullite brick.
- Corundum brick.
High Alumina Bricks Price
High alumina bricks price is higher than fire clay bricks price due to the characteristics of high load soft, low creep, strong erosion resistance and good thermal stability. High alumina bricks price is low in Rongsheng Kiln Refractory Company which produce and export high alumina bricks annually to Korea, Indonesia, Vietnam, Malaysia, Japan, Turkey, Grace, Chile, Austria, South Africa, Saudi Arabia,etc, with reasonable price. If you want to buy cheap high alumina bricks price for your blast furnace, hot-air stove or other heat equipment, just Email Rongsheng refractory manufacturer to get the best price. Get the best high alumina fire bricks price now!
High Alumina Bricks Specification
Physicohemical Specification Of High Alumina Brick
Al2O3/% | Refractoriness
℃ |
0.2MPa RUL
℃ |
Reheating linear change rate % | Apparent porosity
% |
Cold
Crushing Strength/MPa |
|
LZ-75 | ≥75 | ≥1790 | ≥1520 | 1500℃,2h
0.1~ -0.4 |
≤23 | ≥53.9 |
LZ-65 | ≥65 | ≥1790 | ≥1500 | 1500℃,2h
0.1~ -0.4 |
≤23 | ≥49.0 |
LZ-55 | ≥55 | ≥1770 | ≥1470 | 1500℃,2h
0.1~ -0.4 |
≤22 | ≥44.1 |
LZ-48 | ≥48 | ≥1750 | ≥1420 | 1450℃,2h
0.1~ -0.4 |
≤22 | ≥39.2 |
Index Of High Alumina Bricks For Blast Furnace
Al2O3/% | Fe2O3/% | Refractoriness
℃ |
0.2MPa RUL
℃ |
Reheating linear change rate % | Apparent porosity
% |
Cold
Crushing Strength/MPa |
|
GL-65 | ≥65 | ≤2.0 | ≥1790 | ≥1500 | 1500℃,2h
0~ -0.2 |
≤19 | ≥58.8 |
GL-55 | ≥55 | ≤2.0 | ≥1770 | ≥1480 | 1500℃,2h
0~ -0.2 |
≤19 | ≥58.8 |
GL-48 | ≥48 | ≤2.0 | ≥1750 | ≥1450 | 1450℃,2h
0~ -0.2 |
≤18 | ≥49.0 |
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Index Of High Alumina Bricks For Hot-Blast Furnace
Al2O3/% | Refractoriness
℃ |
0.2MPa RUL
℃ |
Reheating linear change rate % | Apparent porosity
% |
Cold
Crushing Strength/MPa |
Thermal shock resistance/times(1100℃-0℃) | |
DL-65 | ≥65 | ≥1780 | ≥1500 | 1500℃,2h
0.1~ -0.4 |
≤22 | ≥50 | ≥6 |
DL-55 | ≥55 | ≥1760 | ≥1470 | 1500℃,2h
0.1~ -0.4 |
≤22 | ≥45 | ≥6 |
DL-48 | ≥48 | ≥1740 | ≥1420 | 1450℃,2h
0.1~ -0.4 |
≤22 | ≥40 | ≥6 |
Index Of High Alumina Bricks For Top Of Steel-making Electric Furnace
Al2O3/% | Refractoriness
℃ |
0.2MPa RUL
℃ |
Reheating linear change rate % | Apparent porosity
% |
Cold
Crushing Strength/MPa |
|
DL-80 | ≥80 | – | ≥1530 | 1500℃,2h
0.2~ -0.4 |
Furnace top≤19
Arch brick≤21 |
≥75 |
DL-75 | ≥75 | – | ≥1520 | 1500℃,2h
0.2~ -0.4 |
Furnace top≤19
Arch brick≤21 |
≥65 |
DBL-80 | ≥80 | ≥1780 | ≥1530 | – | Furnace top≤18
Arch brick≤20 |
≥60 |
DBL-75 | ≥75 | ≥1780 | ≥1520 | – | Furnace top≤18
Arch brick≤21 |
≥55 |
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Index Of High Alumina Bricks For Steel Bucket
Al2O3/% | Fe2O3/% | 0.2MPa RUL
℃ |
Reheating linear change rate % | Apparent porosity
% |
Cold
Crushing Strength/MPa |
|
CL-55 | ≥55 | – | ≥1470 | 1450℃,2h
0.1~ 0.5 |
≤22 | ≥45 |
CL-65 | ≥65 | – | ≥1490 | 1500℃,2h
0.1~ 0.5 |
≤28 | ≥35 |
CL-75 | ≥75 | – | ≥1510 | 1500℃,2h
0.1~ 0.5 |
≤28 | ≥40 |
CL-80 | ≥80 | ≤2.0 | ≥1530 | 1550℃,2h
0.1~ 0.5 |
≤24 | ≥50 |
PZCL-78 | ≥78 | ≤2.0 | ≥1550 | 1550℃,2h
0.3~ 0.4 |
≤21 | ≥70 |
High Alumina Fire Bricks Manufacturers
Rongsheng Kiln Refractory Company is one of a professional refractory brick manufacturers who can produce all kinds of high alumina fire brick with high quality and low price. If you want to buy high alumina fire bricks for your blast furnace, hot-blast furnace, steel-making electric furnace, steel bucket, molten steel ladle, etc, just Email Rongsheng Kiln Refractory Company! Quote RS to get the best price and best service! Rongsheng Kiln Company will make you satisfied!