Low Apparent Porosity Mullite Insulating Fire Bricks

Low Apparent Porosity Mullite Insulating Fire Bricks System 1

Low Apparent Porosity Mullite 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:What is the price of refractory bricks?: The refractory insulating brick generally refers to light brick, normal furnace lining are using this brick kiln will not increase the weight, and good heat insulation effect and ordinary insulating brick production are made of clay, high alumina high strength low iron bead brick, mullite, high aluminum light insulating firebrick, diatomite insulating refractory brick, the use of light heat insulation brick can increase the use of space, and good insulation effect

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

Q:Aluminum content 38, silicon content 55 What refractory bricks?: When the bricks are below Al2O3 71.8%, the base of the composition is mullite and SiO2, such as grade LZ-48 bricks. Because it contains a large number of SiO2 formed in the liquid phase under high temperature is 20% ~ 30%; brick in Al2O3 more than 71.8%, the excess Al2O3 formed corundum crystal under high temperature, while generating 2 high temperature phase, eutectic temperature rise by the low content of Al2O3 brick 1595 C to 1840 C, such as grade LZ-75 brick. In fact, it is impossible to produce a complete phase equilibrium in the process of production, but the glass phase is very small, and there is no more than 10% in the partial gap of the Yu Jing phase

Q:The difference between the high aluminum corundum brick and corundum mullite brick: Tiles are called floor tiles, floor tiles, polished tiles and glazed tiles are glazed tiles, bricks are samples of all kinds of tiles, ceramic tiles will be placed in the tile shop, tiles are also divided into outer wall tiles and inner wall tiles, modern brick and antique brick

Q:What are the properties of corundum mullite?: Heavy material has good compactness, high compressive strength, resistance to various corrosive gases, good thermal shock resistance, good thermal conductivity and wear resistance.

Q:(refractory castable, silicon carbide brick, mullite bricks etc.) do testing should be commissioned by the project? What are the specific qualification standards? Thank you: Is there a mark on the contract? Mark the items as required by the contract.

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: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. Highrefractoriness, up to over 1790 DEG C 1600. Load softening start temperature to 1700 DEG C. Compressive strength at room temperature is 70 ~ 260MPa.. The thermal shock resistance of 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 alum clay as binder, forming and sintering made of fused mullite bricks with high alumina and bauxite, 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 than sintered mullite, thermal resistance Shock resistance than sintered products. The uniformity of content in alumina mainly depends on their high temperature properties and mullite phase and glass distribution. Mainly used in blast furnace, furnace top and bottom furnace, glass furnace regenerator, sintering kiln, petroleum cracking system dead lining.

Q:Mullite brick: High alumina refractory with crystalline mullite (3Al2O3, 2SiO2) as the main crystal phase. General alumina content in 65% ~ 75% between. In addition to mullite, the mineral composition contains lower amounts of glass phase and square quartz, and alumina containing a small amount of corundum.

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.

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