Hot Blast Furnace Coke Oven Refractory Silica Brick

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General Information

1.Silica brick is the main refractory bricks used in glass melting furnace;its main crystal phase is Tridymite.
2. Silica brick for glass melting furnace is used in building checker chamber, chute, combustion chamber,coking chamber,and furnace arch etc.
3. Silica brick for glass furnace have following characters:
(1)High refractoriness under load.
(2)High heat conductivity.
(3)Good thermal shock resistance.
(4)Solidity stable of capacity in high temperature.


The silica bricks for HBS
Silica fire brick for coke oven
High density silica fire brick
Semi-silics fire brick for coke ove

Superior resistance to acids (including oxidizing)
Resistance to chlorine
Resistance to thermal shock and pressure changes
Low thermal and chemical expansion


Technical Data

    Silica brick for hot blast furnace
SiO2≥ 95
Al2O3≤ 1.0
Apparent porosity %≤22(24)
Cold crushing strength MPa≥45(35)
Remaining quarts %≤1.0
Refractoriness under load ºC≥1650
Creep(0.2Mpa ×1550ºC×50h) %≤0.8
Thermal expansion coefficient (1000ºC) %≤1.25
Apparent density g/cm ³≤2.32


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Hot Blast Furnace Coke Oven Refractory Silica Brick

Hot Blast Furnace Coke Oven Refractory Silica Brick


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Q:What are the materials for refractory materials? What are their names?
Classification of chemical components of refractory materialsAccording to the chemical characteristics of refractory raw materials can be divided into acidic refractory materials, such as silica, zircon etc.; neutral refractory raw material, such as corundum, bauxite, mullite (acidic) (acidic), Ge (alkaline) iron and graphite; alkaline refractory materials, such as magnesite, dolomite, magnesium sand calcium sand.
Q:The formula in the refractory brick, and firing curve, who knows?
By silica powder, 81-85%, perlite 15-19%, plus the total weight of the main raw materials of the following accessories
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:Why is the new trend of the high thermal conductivity of silica brick
The high thermal conductivity of silica brick all inherits the advantages of traditional coke oven silica brick, on the basis of further highlight the characteristics of high thermal conductivity.
Q:Can not use it two brick
Acidic silica brick refractory material, has good ability in acid slag erosion
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 will expand when heated brick
After high temperature after the formation of tridymite and cristobalite and quartz and a small amount of residual glass phase, quartz heating to 220-240 DEG C, in a certain degree of thermal expansion, brick maximum expansion occurs in 100~300 DEG C, 300 expansion before the total amount of expansion is about 70%~75%.
Q:The production of brick, the ingredients of why join the waste brick?
The production of silicon material is added to the cause of waste brick:Preparation of silica brick pug, a certain amount of waste silica brick used to add ingredients, for the purpose of expansion and stress reduction products during firing
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:Such purpose and scope please give me detailed points thank you because I am learning stage
Acid refractory brick is mainly composed of tridymite and cristobalite and quartz and a small amount of residual glass phase.

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