Silicon-carbide Mullite Refractory Brick for Dry Process Cement Kiln
The Description:
Silica Mo brick is based on Al2O3 higher than the special grade high bauxite and silicon carbide as the main raw materials, using the principle of refractory composite phase modification, adding appropriate halo additives, so that the product at a certain temperature on its surface to form a solid glaze film, greatly improving the product's corrosion resistance, wear resistance, heat shock resistance and other properties. At present, there are few research reports on how to further improve the high temperature strength and thermal shock resistance stability of silicon Mo brick. This work mainly discusses the addition of halo zirconium sand to silica brick raw material, and studies the influence of halo on the properties of silica brick, so as to meet the use requirements of rotary kiln lining materials.
The silicon in the silicon brick refers to silicon carbide, and the Mo refers to mullite. In fact, silmo brick is a refractory brick made of high bauxite and silicon carbide. Silica brick is essentially just a high-aluminum brick with silicon carbide added. Among them, some products may be mixed with refractory raw materials such as mullite, triite, and corundum.
Silicon carbide is synthesized by the reaction of carbon and silicon dioxide under ultra-high temperature and strong reduction conditions. The synthesis is characterized by the immobile carbon particles, SiO2 and the intermediate substance (SiO.Si) first become a gas phase, and then contact and react with the carbon. Silicon carbide has a Mohs hardness of 9.5. Adding silicon carbide to high alumina brick can improve the hardness of refractory brick. In this way, when the abrasive particle comes into contact with the firebrick, the depth of the abrasive particle is limited, reducing the possibility of the abrasive particle cutting certain substances from the surface of the firebrick when sliding on the surface of the firebrick, thus improving the wear resistance of the firebrick.
Silimo brick is a kind of high aluminum silicon carbide firebrick. If different special refractory raw materials are added to the silica brick, some properties of the silica brick can also be continued to improve, and the modified silica brick can also be divided into different subclasses. For example, in the silmo brick brick, with part of the andalusite instead of earth ore, you can make silmo red brick. In addition to having good high temperature resistance and corrosion resistance, silica red brick also has better heat resistance and seismic resistance than silica brick.
The Physical and Chemical Index
| Binder Phase |
SiC% |
SiO2% |
AL2O3 % |
Apparent porosity% |
Bulk density(G/CM3) |
Cold crushing strength Mpa ≥ |
| Fireclay |
79.78 |
11.09 |
5.9 |
13.1 |
2.62 |
78.4 |
| Mullite |
73.9 |
12.02 |
10.93 |
12.2 |
2.7 |
115.6 |
| Mullite Corundum |
74.6 |
8.77 |
13.91 |
13.4 |
2.61 |
118.6 |
| Corundum |
73.21 |
-- |
15.45 |
16.6 |
2.61 |
93.1 |
The Feature:
1.High softness, excellent high temperature resistance.
2.High strength, not easy to spalling and erosion.
3.Low thermal conductivity, good heat insulation effect.
4.Strong flexibility, good thermal shock resistance.
5.Moderate density, reduce cylinder load
Application:
Silica carbide mullite brick configuration adaptability. The traditional refractory configuration is usually in the kiln. Pre-transition zone. Post-transition zone. The strip is equipped with refractory materials of different properties, such as spinel brick, magnesium-chrome brick and anti-spalling brick. Silmo red brick can completely cover the process strip outside the firing strip. a. Reduce the cylinder temperature above 50 ° C to ensure the safe operation of thermal equipment and reduce the phenomenon of red kiln. b. Improve the heat utilization efficiency of rotary kiln, reduce energy consumption by more than 5%, and improve enterprise efficiency. C. The overall performance is good, the effective use volume is larger than the composite product, and the wear cycle is long.
Company main products and profile:
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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