High Alumina Brick Fireclay Brick

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Product Description:

Specifications

Refractory high alumina brick
High bulk density
High compressive strength
High refractoriness
Best PricE

Features:

1) A variety of specifications available.

2) Satisfy various technical request.

3) Lower medium spoilage.

4) Good insulation performance and high temperature resistance.

5) Stiffness texture.

6) Used in all electric products and electric heating products.

7) OEM, ODM and OBM are welcomed.

customer's drawings, samples and performance requirement are highly appreciated.


Performance
Item                                                                               Unit                            95 Al2O3             96 Al2O3             99 Al2O3                    
Physical Characteristics       Bulk density                     g/cm33.63.63.9
Water absorption           %000
Mechanical Characteristics   Flexural strength             Mpa320340360
Hardness Vickers           Gpa12.213.515.6
Elastic modulus               Gpa280320370
Poisson’s ratio                 -0.220.230.23
Thermal Characteristics   Linear expansion coefficient                 (200C-5000C) 10-6/0C7.17.28
Thermal conductivity       w/(m.k)162432
Specific Heat                     *10-3J/(kg*K)0.780.780.9
Electrical CharacteristicsDielectric constant (1MHZ) -99.49.9
Dielectric loss angle        *10-41551
Dielectric strength             *106V/m121515
Processing technology
Process range (mm)
Outside Diameter1---300
Inside Diameter0.5---300
Length0.5---1200
Accuracy of working (mm)
Perpendicularity0.01
Concentricity0.01
Roundness0.005
Straightness 0.005
Parallelism0.01
Planeness0.005
Roughness 0.05
Fit clearance0.005




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Q:Can iron oxide be used as refractory material?
Iron oxide can not be used as refractory material, but it can be used as refractory additive. Iron oxide can be used as pigment
Q:Semisilica brick, clay brick, high alumina brick and what is the difference?
This is a kind of refractory material is divided into three types: semisilica brick (A12O315 ~ 30%), clay brick (A12O330 ~ 48%), high aluminum brick (A12O3>48%).
Q:What is the main material of silica brick
An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.
Q:What role does silica play in refractories?
The natural mineral of silica is called quartz. In refractories, silica and siliceous refractory materials contain more silica. Silica is acidic at high temperature, and siliceous refractory can resist acid slag corrosion
Q:What is the silica refractory products?
Refractory brick with silica content greater than 90%.
Q:Can not use it two brick
The softening temperature is up to 1640~1670 DEG C, and the volume is stable at high temperature for a long time.
Q:Glass kiln brick for physical and chemical indicators?
Glass kiln with high quality silica brick with silicon oxide content, low melt index, mainly used for glass kiln crown, parapet, wall hanging, small furnace arch superstructure and regenerator.
Q:The specific content is what gb/t2608-2012 brick
Quality assessment procedures, packaging, marking, transport, storage, and quality certificates. Suitable for siliceous refractory bricks.
Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick
Can generate the material needs is the best way to see the impurity problem!! the first consideration is whether can get the material impurities with what method choice after the time! Miscellaneous reactions cannot have new impurity formation! Selected cannot and need material reaction reagent!
Q:Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450
That is because the brick load softening point the maximum temperature is 1450 degrees.

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