Heavy Desity Refractory Silica Bricks Sio2 95%

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Tianjin
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TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
100000 m.t./month

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Product Description                                                                   
Our Heavy Desity Refractory Silica Bricks are made from high quality quartz tail sand, lime and mineralizing agent through the process of crashing, screening, mixing, pressing, drying and sintering.

Application
Our Silica bricks are commonly applied in coke oven, hot blast stoves, glass furnace etc.

Features

High refractoriness under load
High mechanical strength
Excellent thermal shock resistance
Corrosion resistance.

YL Silica bricks are made from high quality quartz tail sand, lime and minaralizing agent through the process of crashing, screening, mixing, pressing, drying and sintering.

 

Technical Data

Itemarch  top  and 
wall  brick
lattice  brick
SiO2  ≥95969596
Fe2O3≤1.0 
refractoriness≥ º C1710
True  Density  g/cm3  ≤2.35
Refractoriness  under 
load  0.2MPa, º C≥
1650166016501660
Apparent  porosity(%)AP≤22222323
Creep(0.2MPa*1550º C*50h)  %  ≤0.8
Thermal  Expasion(1000º C)  %  ≤1.2
Cold  crushing  strength(Mpa)  CCS≥35403035

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Heavy Desity Refractory Silica Bricks Sio2 95%

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Q:What is acid refractory?
Acid refractory material usually refers to refractories with SiO2 content greater than 93%. Its main characteristic is that it can resist acid slag corrosion at high temperature, but it is easy to react with alkaline slag.
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:The chemical composition of silica brick and its physicochemical index?
Brick refers to the refractory products in more than 93% of the content of SiO2
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: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:Semisilica brick interpretation
Good thermal shock resistance. In use, more high viscosity glass phase can be formed, and the masonry brick joint and the working surface are dense and the masonry is complete, which is beneficial to improve the impermeability of the masonry and reduce the erosion effect of the slag on the masonry.
Q:Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450
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.
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:The production of brick, the ingredients of why join the waste brick
Too much addition will reduce the refractory and mechanical strength, increase porosity, so the amount of waste brick should not be too much.
Q:Common bond brick
Manufacturing for silica brick binder hi-li sulfate pulp waste liquid and lime milk. When lime milk is used as a bond, it acts as a plasticizer. To increase the strength of lime brick in the drying process, as mineralizer in the firing, promote the transformation of quartz.

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