Mullite Cordierite Brick

Introduction:

Mullite cordierite brick is also known as cordierite mullite brick, which are composed of two multiphase compositions, generally the proportion is cordierite: 70 wt% and mullite: 30 wt%, i.e. they are two compositions with cordierite (2MgO·2Al₂O₃·5SiO₂) and mullite (3Al₂O₃·2SiO₂). The product has strong acid resistance, good chemical stability, high insulation, high temperature resistance, rapid cold and rapid heat resistance, strong adsorption, high temperature resistance (1200-1300 degrees Celsius), it’s a good electrical insulating porcelain material. Widely used in electric heating appliances (such as hot air guns, hair dryers) in electronic products, coil skeletons, heating conductive tube heads, tube sleeves, substrates, etc.

Coordinate is the special grade raw material fro the production of high performance thermal shock resistant refractory products, with the addition of coordinate(MgO 13.8％、Al₂O₃ 34.8％ & SiO₂ 51.4％), its content will be high in the final products. Coordinate refractories have high mechanical strength, low thermal expansion coefficient, its modulus of rupture is as high as 95Mpa, linear expansion coefficient is about 2.0×10-6℃-1 between 20~800℃. Coordinate bricks are mainly used as refractory slab, regenerator slab, base plate, porous plate, push plate, supporting bricks and so on. High thermal shock resistant coordinate refractories are usually produced by α-Al₂O₃ talc, Suzhou clay, while regular thermal shock resistant coordinate bricks are made by talc, chamotte and bauxite.  

Mullite is the generally name of aluminum silicate series minerals. Mullite is a chemically stable binary compound of Al₂O₃ - SiO₂ series compounds. Except for mullite (3Al₂O₃·2SiO₂) phase, mullite refractories with lower Al₂O₃ content also have a little amount of glass phase and cristobalite, those with higher alumina content also have a little corundum phase. 

Coordinate mullite brick adopts sintered mullite, andalusite, tabular corundum and coordinate as main raw material, added with ultra micro powder to reinforce the matrix. The processing procedures of coordinate mullite bricks are mixing, molding, drying and sintering, As the sintering temperature zone of coordinate is very sharp, sintering temperature control is the key factor for its quality. Mullite coordinate bricks produced by this craft not only have excellent thermal shock resistance(after 100 times of 1100℃ water cooling test, there is no crack), but also have excellent high temperature resistant performances ( refractoriness under load is higher than 1500℃). Mullite coordinate bricks are popularly used in ceramic industry such as kiln vehicle surface, porous push plate, roller kiln gasket, sagger and so on, as well as the ceramic combustor of hot blast furnaces.

Coordinate mullite bricks have good thermal shock resistance, small thermal expansion coefficient.
Coordinate mullite bricks have better performance than fireclay coordinate products. According to the forming properties of coordinate, sintering temperature should not raise too quickly at the range of 900~1200℃, so crystal water can be evaporated and talc can be better decomposed. Coordinate is formed at 1200~1300℃, so the sintering time at this temperature should be promised to obtain more coordinate, temperature ascending speed should be slow and stable at this temperature zone. 

Features:

1. Made of high-quality bauxite material with unique technology.
2. High compression strength, top high-temperature capability.
3. Excellent thermal conductivity, good erosion resistance.
4. Powerful penetrating-proof capability.
5. Widely used in metallurgy, petroleum & chemistry industry, machinery, electric power,ceramic ect.

Chemical & Technical Parameters:

Advantages:

1. Excellent thermal conductivity----Make your ceramic in excellent quality

2. More Clean than other materials----Easy to maintain your kiln production line.

3. Saving more energy----Reduce your cost.

4. Competitive Price----Save your cost

Mullite Cordierite Bricks Application
used in various types of furnace lining, such as hot blast furnace, glass furnace, arch proof, bottom, combustor and so on.

1. Steel furnaces

2. Iron making furnaces

3. Glass kiln

4. Ceramic tunnel kiln

5. Cement kiln

Package:

 Standard exporting seaworthy packing, wooden pallet branded with IPPC chops.