Silica brick for hot blast stove

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
100 PCS
Supply Capability:
50000 PCS/month

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Product Description:

Specifications

1.High refractoriness under load. 
2.High heat conductivity. 
3.Good thermal shock resistance. 
4.Solidity stable of capacity

 

 Typical Features:

 

1.High refractoriness under load.
2.High heat conductivity.
3.Good thermal shock resistance.
4.Solidity stable of capacity

 

Applications:

 

1.Silica brick is the main refractory bricks used in glass melting furnace;It has high refractoriness

2.Silica brick for glass melting furnace is used in building checker chamber, chute, combustion chamber,coking 3.chamber,and furnace arch etc.
4.Silica bricks and fireclay bricks are all acid-resistant bricks.They can be used for glass furnace and other acid   

   industrial furnace.

 

Specification:

 

 

    Item /Specification

High quality silica brick

SiO2 % ≥

94

Fe2O3% ≤

1.0

Meltability Index% ≤

1.0

True Density g/cm3 

2.36

Refractoriness°C≥

1730

 refractoriness under load ≥°C

1650

Apparent Porosity%≤

25

Cold crushing strength ≥Mpa

25

Reheating Linear Change1450°C×.2h ≤%

+0.2

Packaging & Delivery

Packaging Detail:in plastic sheets and then in wooden pallets
Delivery Detail:about 30 days or as your requirement

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Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick
Heating calcination is the best way to extend this sort of impurity removal. Remove impurities
Q:The chemical composition of silica brick and its physicochemical index?
    Al2O3 SiO2      fe2o3      cao       r2o93~98 0.5~2.5 ;; 0.3~2.5  0.2~2.7;  1~1.5;
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?
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.
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:Can not use it two brick
The softening temperature is up to 1640~1670 DEG C, and the volume is stable at high temperature for a long time.
Q:Why in the production of the brick to detect the volume density
Fast density test, please consult an instrument.
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 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 the main material of silica brick
More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance.

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