Active Member
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[China]
Address: Gaogou Industry Park, Xinmi City, Henan Province, China
Contact name:Mika
ZhengZhou Kaier Kiln Refractory Co.，Ltd |
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Light Yellow Color High Alumina Refractory Bricks Calcined Bauxite Raw Materials
Features:
Mechanical strength
Excellent load-bearing properties
High temperature
Excellent resistance to spalling
Resistant to corrosion
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.
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
