Silica Brick for Coke Oven Cmax

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Specifications

1.Silica brick for coke oven
2.SiO2:95%
3.ISO:9001:2008
4.27 years professional manufacturer
5.MOQ:1MT

Silica refractory brick for Coke oven

Features of Silica refractory brick for Coke oven:

1. high volume density of 2.35 g/cm3

2. high SiO2 content of 95%

3. low iron content of 0.8%

4. long working life of more than 20 years

Applications of Silica refractory brick for Coke oven:

The product is made of phosphorus quartz as main raw materials, and cristobalite as auxiliary material, it has high bulk density, strong thermal conductivity, high temperature stability, the long-term use of creep deformation, long service life (more than twenty years).

Physical and chemical index of Silica refractory brick for Coke oven

Index	Furnace bottom,furnace wall	Other parts
Index	Furnace bottom,furnace wall	Other parts
SiO2 % ≥	95	95
0.2MPa Refractoriness under load °C ≥	1650	1650
Linear change on reheating 1450°C×2h %	0~+2	0~+2
Apparent porosity % ≤	22	24
CCS MPa ≥	30	24
True desity g/cm3 ≤	2.34	2.35
Rate of thermal expansion (1000°C) % ≤	1.28	1.3

Silica Brick For Coke Oven CMAX

Q:Can iron oxide be used as refractory material?: Is widely used in this area. Mentioned refractory material of high school textbooks generally refers to three two aluminum oxide (alumina), alumina is also used as a refractory material, refractory crucible, porcelain, artificial gemstones.

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:What role does silica play in refractories?: Low fractory refers to the alumina content between 10%~30%, SiO2 content is less than 85%, semisilica brick SiO2 = 65%,The SiO2 content of not less than 93%, refractory material to natural quartz rock as the main raw materials are called silica, silica brick, silica brick, quartz glass and special products. China's literature generally put this type of product is called "siliceous refractory products", which is the most important 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.: 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:Brick: The silica mineral phase is mainly composed of tridymite and cristobalite, there is a small amount of quartz and glass. Tridymite and cristobalite and quartz remaining at low temperature due to phase change, volume changes greatly, so the brick thermal stability at low temperature is very poor. In use, under 800 degrees Celsius, slowly heating and cooling, so as not to produce cracks. The use of temperature in blast furnace so should not be below 800 DEG on.

Q:The brick is mainly used in the place?: Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.

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:The specific content is what gb/t2608-2012 brick: The provisions of the brick classification, technical requirements, test methods,

Q:The hot blast stove when the temperature did not rise against the brick interface decreased: How to keep the brick masonry temperature not lower than 600 DEG C, while the exhaust temperature is not higher than 400 DEG C.

Q:The formula in the refractory brick, and firing curve, who knows?: Add 1.8-2.2% of the total weight of the main raw material, and then add lime milk, rolling for 10-15 minutes, and finally add pulp, rolling for 10-15 minutes, out of the mill, forming billet.

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