• Corundum-Mullite Brick for Blast Furnace System 1
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Corundum-Mullite Brick for Blast Furnace

Corundum-Mullite Brick for Blast Furnace

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Product features: the blast furnace by using artificial fused mullite brick fire and mullite as main raw materials, through high pressure molding, high temperature sintering, the main mineral composition of mullite, the product has low porosity, load softening point and high creep performance is good and excellent chemical corrosion resistance etc, is one of the big blast furnace in a high-level "ceramic cup" material, is also a hot blast stove and other industrial kiln with high-grade refractory materials.

项目
item

莫来石转
Mullite bricks

    硅线石砖
Sillimanite bricks

复合棕刚玉砖
Compound brown
Corundum bricks

Al2O3  ,%             不小于
Min

70

55

75

Fe2O3 ,%              不大于
Max

0.8

1.5

SIC,10

耐火度,%             不低于
Refractoriness         min

1800

1800

1800

荷重软化开始温度,℃  不低于
RUL                   min

1650

1550

1700

重烧线变化,%         不大于
P.L.C.                max

0-0.4

0-0.4

±0.2

显气孔,%              不小于
A.P.                  max

18

17

18

常温耐压强度,MPa     不小于
CCS                   min

100

80

80

抗震稳定性,1100℃水冷,次
Thermal Shock Resistance(cycles)

25


Q: Mullite bricks in alumina alumina is what?
Mullite (3Al2O3 - 2SiO2) high alumina refractory materials as the main crystal phase. The general alumina content in 65% ~ 75%. In addition to mineral composition of mullite, alumina containing low also contain a small amount of glass phase and cristobalite; alumina containing high also contain a small amount of corundum.
Q: What are the properties of corundum mullite?
Lightweight materials have uniform internal structure, high compressive strength, corrosion resistance, heat shock resistance, oxidation resistance, high temperature and low thermal conductivity. Dongshin refractories manufacturers manufacturers supply, price is appropriate
Q: Corrosion mechanism of iron on refractory materials
Iron oxide can not be used as refractory,
Q: Which is faster for heat transfer between corundum bricks and high alumina bricks?
There must be a difference. They vary in color from the amount of aluminum, the weight, the temperature, and the color. For example: 75 high aluminum and 43 clay bricks, 75 single weight 4.5kg or more
Q: 2000 degree of high temperature materials, which belong to high temperature insulation materials?
What can withstand 2000 degree high temperature materials on the market? What are the materials belong to high temperature materials? High temperature insulation material the most common are the following: calcium silicate shell, aluminum silicate cotton felt, glass surface, diatomite, vermiculite, foamed cement etc.. Among them, the first three are the most common, especially the aluminum silicate cotton felt, which can withstand 650 degrees of high temperature.
Q: What material is heat insulated and not afraid of fire?
Industrial production of perlite as insulation materials began in the United States in 1964Arizona, while China's expanded perlite began production in the late 60s. Expanded perlite includes perlite and pineRock and obsidian (three of which are close to the water content), due to the high temperature in 1000-1300C0, the volume of rapid expansion of 4 - 30 times, so collectively referred to as expanded perlite. Its characteristics are: low thermal conductivity, fire resistance and sound insulation performance is good, non-toxic, cheap, but have very strong water absorption, thermal conductivity due to water is much higher than that of pearlite, water will cause its insulation performance degradation, inorganic porous material, low strength, easy to break; therefore in thermal insulation applications when the need to enhance the hydrophobic and expanded perlite.
Q: What are the high temperature insulation materials?
The most thermal insulation is a variety of cotton fiber insulation, but the temperature is not very high. Alumina polycrystalline fiber cotton, about 1600 degrees, mullite polycrystal, mixed polycrystal, lower temperature. Zirconia material is said to be capable of high temperature because zirconia has a melting point of 2700 degrees, 700 degrees higher than alumina. But it's not used. It's not clear.
Q: What kind of refractory material is used in the hearth of reverberatory furnace?
The alumina fiber has a maximum resistance of 1700 degrees, and the zirconium fiber is generally 1700 to 2200 degrees
Q: What material is good for refractory bricks?
Clay brick is a refractory brick commonly used in blast furnaces, hot blast furnaces, heating furnaces, power boilers, lime kilns, rotary kilns, ceramics and refractory bricks.

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