Mullite Brick - Low Apparent Porosity Insulating Fire Bricks

Mullite Brick - Low Apparent Porosity Insulating Fire Bricks System 1

Mullite Brick - Low Apparent Porosity Insulating Fire Bricks

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 m.t.

Supply Capability:: 1000 m.t./month

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Packaging & Delivery

Packaging Details:	Wood carton box:10pcs/carton wooden pallet:544pcs/pallet
Delivery Detail:	15 Days deposit

manufacture low apparent porosity mullite insulating fire brick for heating furnace

Product Description

Low apparent porosity mullite insulating fire brick for heating furnace is a kind of insulation refractory product taking mullite as main raw materials.It enjoys high temperature resistance, high strength, nd low thermal conductivity. Besides, it can directly contact the flame, and can be used in lining of a variety of industrial furnaces.

key features

1.Low density High purity

2.Low iron Low thermal conductivity

3.Excellent thermal shock resistance

application

1.Glass industries iron & steel industries

2.Ceramics industries non-ferrous metals industries

3.Electrolytic Aluminum industries power generation industries

4.Heat surface fireproof lining other fire-proof back lining

Technical Data

Index of refractory Mullite lightweight brick
item	AL2O3%	Fe2O3%	Bulk Density,	Cold Crushing	linear change	Thermal conductivity
item	AL2O3%	Fe2O3%	g/cm3	Strength Mpa	on reheating/%	/W.(m.k)-1(350℃)
P30-6	≥52	≤1.0	<0.6< p="">	≥1.5	≤1.0(1350°C,12h)	0.2
P40-8	≥55	≤0.8	<0.8< p="">	≥2.5	≤1.0(1400°C,12h)	0.28
P50-10	≥60	≤0.8	<1.0< p="">	≥4.0	≤1.0(1500°C,12h)	0.33
P60-12	≥72	≤0.8	<1.2< p="">	≥2.5(1.2)	≤1.0(1650°C,12h)	0.44
P60-135	≥72	≤0.8	<1.35< p="">	≥3.5(1.4)	≤1.0(1650°C,12h)	0.48
P65-155	≥76	≤0.8	<1.55< p="">	≥3.8(1.6)	≤1.0(1650°C,12h)	0.53
P70-165	≥80	≤0.6	<1.65< p="">	≥6.0(2.8)	≤1.0(1700°C,12h)	0.7
P80-175	≥85	≤0.5	<1.75< p="">	≥6.0(2.8)	≤1.0(1750°C,12h)	0.72

Low Apparent Porosity Mullite Insulating Fire Bricks

other products

Low Apparent Porosity Mullite Insulating Fire Bricks

Q: Aluminum content 38, silicon content 55 What refractory bricks?: The mineral composition of the high alumina brick is determined by the bauxite used. The mineral composition of the clinker is usually mullite, corundum and glass. The theoretical composition of mullite is Al2O371.8%, SiO2 28.2%, and its melting decomposition temperature is 1840 DEG C. With acicular crystal, network cross structure, high temperature state showed better strength. Corundum in the form of alpha -Al2O3, melting point of 2050 degrees, hardness of Mohs 9, showing a granular and columnar crystal, has good chemical stability, acid, alkaline slag have a certain resistance. Based on the composition of mullite minerals, the phase composition of high alumina brick can be judged according to the content of Al2O3.

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.

Q: What is the difference between mullite ceramics and alumina ceramics? Can you tell me something to do with floor tiles?: The floor tiles are not made exclusively of alumina. Pure alumina ceramics are expensive.

Q: What is the price of refractory bricks?: The construction is superior, the light insulating brick has good machinability, and the construction is convenient and simple, and the labor intensity can be reduced, the construction efficiency can be improved, and the construction period can be shortened. The price is determined by the choice of material and volume density, from several hundred to 5000 yuan, mainly with the choice of material

Q: Mullite bricks in alumina alumina is what?: Quality solutionsMullite brick:With mullite as main crystalline phase of high alumina refractory products. Mullite bricks containing Al2O3 64%~75%, refractoriness >1790? C, normal temperature compressive strength 70~260MPa, softening the starting point for 1600~1700 degrees. The manufacturing method for casting and sintering process.

Q: Jm26 mullite aluminum content in the number, ask God to answer. 23 more. How is this identified with the naked eye?: Under strong alkaline conditions, aluminum is separated from other metal ions by the amphoteric nature of aluminum.

Q: The introduction of mullite brick: High alumina refractory with crystalline mullite (3Al2O3, 2SiO2) as the main crystal phase.

Q: Mullite brick: High refractoriness, up to 1790 degrees celsius. The softening start temperature is 1600~1700 degrees. The compressive strength at normal temperature is 70 ~ 260MPa. Good thermal shock resistance. The sintered mullite and fused mullite brick two. Sintered mullite brick with high bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as binder, after molding, sintering and made. Fused mullite brick with high bauxite, alumina and refractory clay as raw material, adding charcoal or coke fines as a reducing agent, formed by reduction of electric melting method to manufacture. The crystallization of fused mullite is larger than that of sintered mullite, and the thermal shock resistance is better than that of sintered products. Their high temperature performance mainly depends on the content of alumina and the uniformity of the phase distribution of mullite and glass. [1]

Q: What are the varieties of polycrystalline mullite?: Performance comparisonWe used chemical method to produce a microcrystalline structure, excellent thermal stability, temperature exceeds the 300~400. C.The small fiber diameter uniform, slag ball trace, bulk density for 1/2~1/3 products.The large amount of fiber products, high porosity, low coefficient of heat conductivity.It has large surface area, is the ideal material for high temperature catalytic carrier.

Q: Refractory bricks (mullite bricks) can be used on the walls of buildings?: In many architectural design, high-rise fire rating is placed in the important position of the topic, especially when the floor height is more than 20 layers, we have more stringent requirements for the choice of fire resistant materials. The building wall, kitchen flue, boiler flue, flammable zone must use a firewall barrier, in many refractory refractory brick is the product of choice for fire resistance of refractory brick masonry is more stable.

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