|Place of Origin:||ZhengZhou ,China|
|Brand Name:||Henan HengYu|
|Minimum Order Quantity:||5Ton|
|Packaging Details:||Pallets With Plastic Belt And PE Bag , Also Accept Customize.|
|Delivery Time:||10 Days After Deposit|
|Payment Terms:||T/T, Western Union, L/C|
|Supply Ability:||5000Ton Per Month|
|Al2o3:||55%-82%||Application:||Industrial Furnaces, Metallurgy|
|Color:||Light Yellow||Size:||As Request|
|Bulk Density:||2.3-2.7 G/cm3||Fe2O3:||2%|
high alumina fire bricks,
heat resistant bricks for fire pit
Good Slag Resistance High Alumina Refractory Bricks For Glass Industries
The high alumina brick is an alumina-silicate refractory material in which the Al2O3 content is more than 55%, and is calcined from a high-content alumina raw material such as a silicone raw material or a bauxite. High heat resistance and high temperature resistance at 1770°C and above. Has good slag resistance, mainly used in the masonry of steelmaking electric furnace, glass furnace, cement rotary furnace and so on.
Load softening temperature
Since the high aluminum has a high Al2O3 content, a low impurity content, and a low formation of the molten glass body, the fire-resistant softening temperature is higher than that of the refractory clay brick. However, since the mullite crystal has not yet formed a network structure, the load softening temperature is lower than the load softening temperature of the silica brick.
Characterized by low bulk density, maximum service temperature is 1350C., high cold crushing strength, size precision and hold the most stable and lowest thermal conductivity of all insulating refractory bricks at present.
The total weight of the furnace body and walls thickness can be reduced effectively, thermal efficiency and working condition can be improved, energy consumption can be lowered, and productivity and significant economic results can be achieved.
High alumina lightweight insulating refractory brick is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.
Cement Rotary Kilns
Blast furnaces Stoves & Checkers
Electric Furnace Roof
Physical and chemical indexes
|Item/Grade||Fire clay brick||High alumina brick|
|Refractoriness under load, 0.2MPa, °C (≥)||1250||1300||1360||1420||1450||1480||1530||1600|
|Apparent porosity (%)||22-26||20-24||20-22||18-20||20-23||20-23||20-22||18-20|
|Bulk density (g/cm³)||1.9-2.0||1.95-2.1||2.1-2.2||2.15-2.22||2.25-2.4||2.3-2.5||2.4-2.6||2.5-2.7|
|Cold crushing strength ,MPa (≥)||20||25||30||40||45||50||60||70|