Refractory Silica Bricks for Hot Blast Furnace

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Description:

Silica bricks for hot stoves feature sharp dimension,low expansion,little residual quartz, low true density.low creep rate,good thermal shock resistance upon 600°C. It mainly used at high temperature area include arch and upside of hot stove and upside of checker.

 

Application:

1 Building materials for blast furnace                      

2 Building materials for hot-blast stove                      

3 Building materials for coke oven                      

 

Advantage:

1.Competitive Price. Make the products competitive in your market.

2.Abundant Experience. Prevent cracks and twist in bricks.

3.Different Moulds. Save mould fees for you.


Typical features:

1 Excellent thermal stability                        

2 High refractoriness under load                       

3 Chemical stability and anti-corrision                        

4 Small high temperature creep rate

                   

Technical data:

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FAQs:

Q1  What’s the transport method?

A1  FCL delivery goods with wooden pallet or wooden case by sea; If LCL delivery, must with wooden case; Sometimes need open top, flat rack or bulk cargo.

Q2  What’s the required payment term?

A2  Generally 30% TT as the prepayment, 70% TT before delivery. If need, 100% Irrevocable Letter of Credit or negotiation.

Q3  Which country are our products exported to?

A3  Apart from entire Chinese market, the US, Russia, Japan, Korea, Australia and some Southeast Asian Nations

 

Refractory Silica Bricks for Hot Blast Furnace

Refractory Silica Bricks for Hot Blast Furnace


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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:Common bond brick?
Lime should contain a lot of active CaO, I decompose CaCO3 and MgCO3 not more than 5%, Al2O3+Fe2O3+SiO2 no more than 5%. When the content of large particles, burned Ca-CO3 and over burned lime, the product produced caves, affecting the quality of products.
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: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:The United States of our brick anti-dumping duties?
At present of our brick anti-dumping rate is 73.10%
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:Such purpose and scope please give me detailed points thank you
Mainly used for coke oven carbonization chamber and the combustion chamber wall, open hearth furnace regenerator and a sediment chamber, soaking furnace, glass furnace, refractory materials and ceramic brick kiln, kiln vault and other load-bearing parts. Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.
Q:What is the effect of the content of silicon nitride in silicon nitride bonded silicon carbide brick on the use of electrobath? Thank you
The main damage of silicon carbide side wall brick is stress damage, not chemical erosion. Chemical damage is formed prior to the formation of the groove, and the damage to the chemical erosion is little after the formation of the groove.
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: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%.

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