Perforated Fireclay Refractory Brick for Roasting Furnace
The Description:
Firebrick refers to clay products with Al2O3 content of 30% to 40% aluminum silicate material. Solid clay firebrick is one of the oldest building materials in the world. From the Mausoleum of Qin Shihuang in Shaanxi Province to the Great Wall of Ming and Qing Dynasties in Beijing, it has inherited the architectural civilization of the Chinese nation for thousands of years. It is still the country's favorite building material. Clay firebrick materials, cheap, durable, but also fire, heat insulation, sound insulation, moisture absorption and other advantages, widely used in civil construction projects.
Technical index:
| Items |
Special andalusite brick |
| Al2O3 % ≥ |
55-60 |
| Fe2O3 % ≤ |
1.2 |
| B.D g/cm3 ≥ |
2.25 |
| Refractoriness ºC ≥ |
1790 |
| RUL ºC ≥ |
1600 |
| % P.L.C 1550ºC×2h |
-0.2 |
| Apparent porosity % ≤ |
18 |
| Creep%(0.2Mpa*50h) |
0.2 |
Product feature:
The refractoriness of clay bricks is similar to that of silicon bricks, up to 1690~1730 ° C, but the load softening temperature is more than 200 ° C lower than that of silicon bricks. Because in addition to containing high refractories of mullite crystals, clay bricks also contain nearly half of the low melting point amorphous glass phase.
In the temperature range of 0~1000ºC, the volume of clay brick expands evenly with the increase of temperature, and the linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, only about half of the silicon brick. When the temperature reaches 1200ºC and then continues to warm up, its volume will start to shrink from the maximum expansion. The residual shrinkage of clay bricks leads to the cracking of masonry joints, which is a major shortcoming of clay bricks. When the temperature exceeds 1200 ° C, the low melting point in the clay brick gradually melts, and the particles are very tight together due to the surface tension, resulting in volume contraction.
Application:
Due to the low load softening temperature of clay brick, shrinkage at high temperature, thermal conductivity is 15% to 20% smaller than silicon brick, mechanical strength is worse than silicon brick, so clay brick can only be used for secondary parts of coke oven, such as regenerator chamber wall, small flue lining brick and regenerator chamber lattice brick, furnace door lining brick, furnace top and rising pipe lining brick
Company main products and profiles:
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
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