Manufacture Low Apparent Porosity Mullite Insulating Fire Brick

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Tianjin
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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


Mullite Insulation Refractory Bricks 
Refractory Insulation Bricks 
Refractory Bricks Manufacturer 
Al2O3:48%, 
B.D.:0.5~1.0g/c 

 

Insulation bricks are classified under temperature between 1300ºC and 1700ºC, manufactured from high purity alumina clay by mixing, press-forming, drying, sintering and machining. Bricks contain carefully-graded organic fillers which are burned out during sintering to give a uniform controllable pore structure. This technique makes product feature low thermal conductivity and excellent heat insulation

 

Refractory Insulation brick can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.

 

ADVANTAGES: 

Light weight and low thermal conductivity allows thinner furnace walls 
Maintain stable structural strength throughout ambient to maximum service temperature 
Low heat storage results in rapid cooling and heating operation 
Low iron and impurities to enhance reducing atmosphere 
High thermal shock resistance in preventing spalling 
Non standard sizes and shapes are available upon request 

 

Quality

JM-23

JM -26

JM -28

JM -30

JM -32


Classification   temperature(oC)

1260

1430

1540

1650

1760


Bulk density   (g/cm3)

0.6

0.8

0.9

1

1.25


Crushing   strength (Mpa)

1.2

1.6

2.1

2.5

3.5


Modulus of   rupture (Mpa)

0.9

1.4

1.6

2.1

2.1


Permanent linear   change (CT-30oCX24h)%

0.5

0.4

0.5

0.9

0.9


Reversible   thermal expansion at 1100oC

0.5

0.7

0.8

0.9

1.1


Thermal shock   resistance(cycles)1100oC Water cooling

30

30

30

30

30


Thermal   conductivity (W/m.k)

400oC

0.14

0.27

0.32

0.41

0.49


600oC

0.16

0.29

0.34

0.43

0.5


800oC

0.18

0.31

0.36

0.44

0.51


1000oC

0.2

0.33

0.38

0.45

0.53


1200oC

-

0.35

0.41

0.47

0.56


Chemical   Analysis (%)

Al2O3

37

58

67

73

77


Fe2O3

0.7

0.7

0.6

0.5

0.4





Manufacture Low Apparent Porosity Mullite Insulating Fire Brick

Manufacture Low Apparent Porosity Mullite Insulating Fire Brick

Manufacture Low Apparent Porosity Mullite Insulating Fire Brick


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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
If there is no mark, ask the laboratory of the production factory to analyze any chemical or physical items. Or, check the national standard, the national standard has the basic requirements of the physical indicators
Q:What are the varieties of polycrystalline mullite?
Chemical composition AI2O3:72 ~ 74%AI2O3+SiO2:~99.6%Main crystalline phase mulliteThe fiber diameter is 2-3.8The specific surface area is 35.5M2/g (1000 DEG C)The burning shrinkage rate was ~1.0% (1500 x6hr)Bulk density 60-100kg/M3The temperature is 1500 degrees centigrade
Q:Jm26 mullite aluminum content in the number, ask God to answer. 23 more. How is this identified with the naked eye?
In the presence of excess EDTA in the acidic medium, the aluminum is complexed with EDTA, and the remaining EDTA is complexed with lead salt, and then the EDTA complexed with aluminum is replaced by sodium fluoride, and the lead salt is substituted...
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:Aluminum content 38, silicon content 55 What refractory bricks?
Semisilica brick: the content of Al2O3 is 15% ~ 30% of aluminium silicate refractory products. Manufacturing products are semi silica quartz containing impurities or native clay kaolin, refractory clay or kaolin beneficiation tailings and the pyrophyllite
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:Mullite bricks on 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: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 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.
Q:What is the difference between mullite ceramics and alumina ceramics? Can you tell me something to do with floor tiles?
Mullite is formed by the reaction of alumina with silica. The main difference between him and alumina is that:Hardness: alumina is harder than mullite, but two are tough enough, and are not easy to break.Corrosion resistance: mullite acid is not alkali resistant. Alpha alumina ceramic acid, alkali resistance - for floor tiles, alumina corrosion resistance is too high, unnecessary.

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