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Application of Fused Alumina in Refractory

Author:Jinlin corundumTo update: 2016-10-08

According to our fused alumina classification  described above, we know thatfused alumina contains brown fused alumina, white fused alumina, black fused alumina, AZS and other products, its use is also a lot, today I am in order to facilitate the company to buy when you can quickly find their own the need for products, our company for everyone summed up application of fused alumina in refractory.
We do not know only the use of the product on the line, we want a comprehensive understanding of the product, such as the characteristics of fused alumina in the refractory, the following is our refractory for fused alumina characteristics made by the summary:
1. Which has high strength and wear resistance;
2. Which has acid-resistant slag erosion and infiltration; various fused alumina main crystal phase for the a-Al2O3, has good resistance to acid erosion and infiltration capacity. Slag generated during ironmaking is generally acidic slag, SiO2 content is high and CaO content is low.
3. Which has a variety of materials and properties; fused alumina crystal phase for the a-Al2O3, and many oxides and non-oxide compound to improve their own performance, such as thermal shock resistance, slag erosion resistance .
4. Which has a variety of bonding methods; fused alumina and a variety of bonding agent compatibility is better, can use a variety of bonding methods, such as high-temperature sintering, low temperature bonding, can give different characteristics of the material.
fused alumina products like artificial abrasive fused alumina products can be divided into a variety, such as fused alumina in the refractory products are mainly divided into stereotypes and undefined products two categories.
Stereotypes products are:
1. Fused alumina refractory products: its main application in the carbon black reaction furnace, gas furnace, ammonia decomposition furnace, two conversion furnace, metallurgical industry, such as blast furnace.
2. Modified high alumina bricks: ① Low creep high alumina bricks: creep temperature of 1500 ℃ -1550 ℃ high alumina bricks, adding some fused alumina and silica raw materials can be obtained with low creep rate of high alumina brick. ② Phosphate combined with high alumina bricks: special grade or a high alumina bauxite clinker as the main raw material, phosphoric acid solution or aluminum phosphate solution as a bonding agent, adding a small amount of fused alumina, mullite and so on, 600 ℃ heat treatment and made of chemical combination of refractory products. Mainly used in hot-blast furnace, cement kiln, electric stove top, ladle and so on.
3. Fused alumina – mullite products: its main application in the ceramic industry, high-temperature firing kiln and push plate, bearing plate and other kiln furniture.

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Unshaped products:
Various fused alumina raw materials can be used as the preparation of unshaped refractory products, aggregates and powder, according to different binders, according to the construction method can be divided into the following categories:
1. Refractory castable materials: fused alumina, fused alumina – spinel, etc.;
2. Refractory plastic: fused alumina quality, aggregate; various fused alumina; water glass, phosphate, organic binder.
3. Fire ramming material: fused alumina quality, aggregate; various fused alumina; phosphoric acid, phosphate and so on.
4. Refractory mud: for fused alumina masonry joints.
5. Dry vibration material: fused alumina Chinese vibrating material, silicon carbide vibration material.
Brown fused alumina has a complex phase modification, improve the thermal shock resistance can be introduced mullite, andalusite, zirconia, etc .; improve the corrosion resistance of acid-resistant slag can be the introduction of silicon carbide, carbon and so on.
These are my company for refractories in application of fused alumina in refractory, I hope you can help. Thank you for reading, please continue to pay attention to our website !

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