Product Details:
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Al2o3: | 55%-82% | Raw Materials: | Calcined Bauxite |
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Application: | Industrial Furnaces, Metallurgy | Color: | Light Yellow |
Size: | As Request | Bulk Density: | 2.3-2.7 G/cm3 |
Fe2O3: | 2% | Product Name: | High Alumina Brick For Lime Shaft Kiln |
High Light: | high alumina fire bricks,heat resistant bricks for fire pit |
Resistant To Corrosion High Alumina Refractory Bricks For Electric Furnace Tops
Description
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.
Characteristics of high alumina bricks:
1. Refractoriness
More refractory than refractory clay bricks and semi-silica bricks, up to 1750-1790C, belonging to high-grade refractory materials.
2. 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.
3. Slag resistance
High Al2O3 has high Al2O3 content, close to neutral refractory material, and can resist the erosion of acid slag and alkali slag. Because it contains SiO2, the resistance to alkali slag is less than acid resistance.
Features:
Mechanical strength
Excellent load-bearing properties
High temperature
Excellent resistance to spalling
Resistant to corrosion
Application:
1. Iron & steel making industry: Blast furnace, hot blast furnace(stove), pellet shaft furnace, hot metal ladle, steel ladle, tundish, heating furnace, soaking pit furnace, heat treatment furnace, refining furnace, reheating furnace, metal mixter furnace, annealing furnace, cupola furnace, electric arc furnace, induction furnace, AOD furnace, VOD furnace,etc thermal technology equipment.
2. Non-ferrous Metal industry: Smelting furnace, refining furnace, reverberatory furnace, converter furnace.
3. Building materials industry: Cement kiln, glass kiln, ceramic kiln, lime kilns, kiln car, tunnel kiln
4. Energy & Incineration: Coke oven, general boiler, power generation, boiler, circulating fluidized bed boiler, electric furnace, carbon rosating furnace, waste incinerators.
5. Others: Petrochemical industry furnace.
Physical and chemical indexes
Item/Grade | Fire clay brick | High alumina brick | ||||||
SK-30 | SK-32 | SK-34 | SK-35 | SK-36 | SK-37 | SK-38 | SK-40 | |
AL2O3% (≥) | 30 | 35 | 38 | 45 | 55 | 65 | 70 | 82 |
Fe2O3% (≤) | 2.5 | 2.5 | 2 | 2 | 2 | 2 | 2 | 2 |
Refractoriness(SK) | 30 | 32 | 34 | 35 | 36 | 37 | 38 | 40 |
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 |
Product Details
Henan HengYu Kiln Refractory Co.,Ltd. now mainly produces refractory materials for steel, metallurgy, coking, cement, charcoal, glass and various industrial kiln furnaces. It produces more than 60,000 tons of various stereotyped and amorphous refractory materials annually.
Product Range
Contact Person: Mika
Tel: 86-15981951014