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 are the materials for refractory materials? What are their names?
Acidic materialMainly siliceous materials, such as quartz, tridymite and cristobalite, chalcedony, flint, opal, white quartzite, silica sand, diatomaceous earth, silicon oxide contained in these siliceous materials (SiO2) at least 90%, pure raw materials are silicon oxide as high as 99% or more. Siliceous materials at high temperature is the acidic nature of chemical dynamics, when the presence of metal oxide, or when in contact with the chemical reaction, and combined with a fusible silicate. Therefore, if there is a small amount of metal oxide in siliceous material, it will seriously affect its thermal resistance.
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.
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:Can not use it two brick
Acidic silica brick refractory material, has good ability in acid slag erosion
Q:Why in the production of the brick to detect the volume density
Fast density test, please consult an instrument.
Q:The introduction of silica brick
The silica mineral phase is mainly composed of tridymite and cristobalite, there is a small amount of quartz and glass
Q:High temperature refractory material?
Many kinds of refractory materials, usually by refractoriness level is divided into ordinary refractory materials (1580 to 1770 DEG C), advanced refractories (1770 to 2000 DEG C) and special refractories (more than 2000 DEG C); according to the chemical characteristics into acid refractory material, refractory materials and basic refractory materials. In addition, the refractory material used for special occasions.Now the definition of refractory materials, has not only depends on whether the refractoriness at 1580 DEG. Refers to the current refractories used in metallurgy, petrochemical, cement, ceramics and other production equipment with inorganic non-metallic materials.
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: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:The United States of our brick anti-dumping duties?
. According to the relevant legal procedures, the United States International Trade Commission will make a final ruling on the anti dumping industrial injury before January 6, 2014, if an affirmative determination, the U.S. Department of Commerce will be involved in product release tax anti-dumping order.

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