Silica brick features:
The brick is shaped by high pressure and sintered at high temperatures. with excellent high-temperature physical performance and chemical erosion resistance.Silica bricks are prepared by kiln-firing quartz of low impurity content at a temperature of 1450°C, thereby converting at least 98.5% of it into a mixture of the more 'open', less dense forms, tridymite and cristobalite.
Silica brick is one of the most commonly used refractories. Due to its low cost, high creep resistance and low pollution to glass, it is widely used in the crown of the glass furnaces. Silica brick is a kind of basic refractory and has good corrosion resistance to acid slags.
It is mainly made from natural silica sand whose SiO2 content should be more than 96%. The higher SiO2 content in silica sand, the higher temperature silica bricks resist. Its crystal structure consists of tridymite, cristobalite and a small amount of residual quartz as well as glass phase.
The technical specification:
| item |
Specification |
| floor & wall brick |
other brick |
| SiO2 ≥ |
95% |
| Fe2O3 ≤ |
1.5% |
| Al2O3 ≤ |
1.5% |
| CaO ≤ |
2.5% |
| cold crushing strength ≥ |
40Mpa |
35Mpa |
| apparent porosity ≤ |
22% |
24% |
| true density ≤ |
2.33g/cm3 |
2.34g/cm3 |
| thermal expansion 1000ºC≤ |
1.28% |
1.30% |
| residual quartz ≤ |
1.0% |
| refractoriness under load Ta ≥ |
1650ºC |
Why choose us?
Zhengzhou Kaiyuan Refractories Co., Ltd is a manufacturer of silicon-aluminum refractory (fireclay brick, high alumina brick, silica brick, mullite brick, corundum brick, insulation brick, castable, mortar) for coke oven, blast furnace, hot blast stove, heating furnace, anode baking furnace, boilers and other industrial furnaces for 20 years located in Henan, China.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
We have test equipment for the following items:
chemical %
bulk density
apparent porosity
cold crushing strength
modulus of rupture
refractoriness under load
creep
thermal expansion
Reheat linear change
thermal shock resistance
thermal conductivity
Contract Kiln Construction
FAQ
1. Are you a Manufacturer or trader?
A: We are manufacturer and our plant is located in Xinmi city, Henan, China
2. Can we visit your company?
A: You are warmly welcome to visit our company at anytime, you'll not regret of the visiting.
3. Do you accept OEM?
A: Yes, we do OEM.
4. What's the MOQ of trial order?
A: We care about all the potential customers and take all the trails orders.
5. What is the payment term?
A: TT, LC, DP, DA.
6. How long is the delivery time?
A: Usually within 35 days after down payment.
7. Do you accept third party inspection ?
A: Yes for sure, we accept the third party inspection before delivery.
8. What is your after-sell service?
A: The rejected goods can be replaced or we can make compensation for it. We can send technical engineers to the end user for technical issue.
9.What is your company's certification?
A: ISO9001 certificate
Audited Supplier 
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