Silica Brick - High Alumina Brick, Fire Clay Brick, Refractory Brick

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Specifications

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

Refractory High Alumina Brick and Mortar

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.

Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics.

Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products.

We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc.

Performance
Item		Unit	95 Al2O3	96 Al2O3	99 Al2O3
Physical Characteristics	Bulk density	g/cm3	3.6	3.6	3.9
Physical Characteristics	Water absorption	%	0	0	0
Mechanical Characteristics	Flexural strength	Mpa	320	340	360
	Hardness Vickers	Gpa	12.2	13.5	15.6
	Elastic modulus	Gpa	280	320	370
	Poisson’s ratio	-	0.22	0.23	0.23
Thermal Characteristics	Linear expansion coefficient	(200C-5000C) 10-6/0C	7.1	7.2	8
	Thermal conductivity	w/(m.k)	16	24	32
	Specific Heat	10-3J/(kgK)	0.78	0.78	0.9
Electrical Characteristics	Dielectric constant (1MHZ)	-	9	9.4	9.9
	Dielectric loss angle	*10-4	15	5	1
	Dielectric strength	*106V/m	12	15	15
Processing technology
Process range (mm)
Outside Diameter	1---300
Inside Diameter	0.5---300
Length	0.5---1200
Accuracy of working (mm)
Perpendicularity	0.01
Concentricity	0.01
Roundness	0.005
Straightness	0.005
Parallelism	0.01
Planeness	0.005
Roughness	0.05
Fit clearance	0.005

$Refractory Brick High Alumina Brick Fire Clay Brick$

Q: Because of the recent relates to this industry, by way of learning to name for all raw materials, I hope knowledgeable friends exhibitions, thank you.: The main raw material is the main body of refractory. Auxiliary raw materials can be divided into binders and additives. The role of bonding agent is to make the refractory body in the production and use process has enough strength. There are commonly used lignin, phenolic resin, asphalt, cement, water glass, phosphoric acid and phosphate, sulfate, some main raw material itself has the effect of binder, such as clay; additive is to improve the production of refractory materials and construction technology, or strengthen the refractory material of some properties, such as stabilizer, water reducing agent, inhibitor, plasticizer, foaming agent, dispersing agent, bulking agent, antioxidant.

Q: The introduction of silica brick: The characteristics of silica brick:Brick belongs to refractory materials, with strong resistance to acid slag or acid solution erosion ability, high load softening temperature are excellent properties of silica brick, usually 1640-1680 C.The use of silica brick:Mainly used for masonry brick oven carbonization chamber, a combustion chamber and a partition wall, glass furnace and kiln roof, pool wall, high temperature hot blast furnace, glass furnace, load-bearing pool wall, hot blast stove, baking furnace of carbon bearing part of high temperature furnaces etc.. Rongsheng with refractory

Q: The difference between clay refractory bricks and refractory brick in the application.: Clay brick features good thermal shock resistance and low price, but high temperature performance is not well integrated, and the long-term use temperature is not higher than 1300 degrees. It is widely used in low temperature parts of various kilns.

Q: What is acid refractory?: Refractory materials are mainly quartz glass products, combined with fused quartz products, silica brick and unshaped refractories. Semi siliceous refractory materials are generally attributed to this category. As for fireclay refractories, they are also classified as semi acidic or weakly acidic refractories. Also, zircon refractory and silicon carbide refractory for special acidic refractory materials are also classified into this category.

Q: Why is the new trend of the high thermal conductivity of silica brick: The use of high thermal conductivity of silica brick, reducing coke fuel consumption, reduce emissions of pollutants such as NOx, with considerable economic benefits and social benefits, is the future direction of the new technology of using coke oven refractory.

Q: What is the main material of silica brickIt's common, the kind we see so often!: More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance.

Q: How to judge the quality of brick, clay brick, high alumina brick furnace from the appearance?: Mainly from the impurities to determine how much, generally less impurity single color brick.

Q: The high thermal conductivity of silica brick and traditional brick what is the difference?: Brick, high thermal conductivity has been greatly improved in terms of morphology, crystal structure, physicochemical index. The structure and morphology of high thermal conductivity of silica brick,Structure and morphology of high thermal conductivity and the traditional brick brick magnified 20 times were compared, high thermal conductivity silica pore size distribution is more uniform and finer.

Q: Common bond brick?: When adding ingredients, the amount of lime added shall be converted to CaO, and the amount of addition varies depending on the product, usually fluctuating at 1.5~2.5%. For example, the production of coke oven silica brick, the dosage of CaO is 2.0~3.0%; the production of electric furnace top brick, the dosage of CaO is 1.4~1.75%.

Q: What are the main constituents of refractory bricks?: Refractory brick composition is mainly composed of a variety of aggregate or aggregate and one or more kinds of sticky agent composed of mixed powder particles, when used, must be mixed with one or more liquids, mixing evenly, with strong liquidity. Different refractory bricks are different, such as silicon, aluminum, clay and so on:

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