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What are the classifications of high alumina bricks?

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-10-15     

High alumina brick is an important neutral refractory brick, which is widely used in kiln.Now let's learn about the classification of high alumina bricks. Simply speaking, let's learn about the different properties of high alumina bricks with different Al2O3 content.

First of all, we usually put the high alumina bricks are divided into four levels: level of high alumina brick is Al2O3 content higher than 75% of high alumina brick, this kind of high alumina bricks are very strong compressive strength, compressive strength can usually reach 70 mpa refractoriness under load at 1510 ℃, refractoriness above 1790 ℃, show porosity generally below 20%, the level of high alumina brick has good fireproof performance;Secondary high alumina brick of Al2O3 content over 65%, the requirements of Fe2O3 content should be below 2.5%, because in high alumina brick Fe2O3 is a kind of harmful material, it can reduce the refractoriness of high alumina brick and service life, high quality of high alumina brick is usually as far as possible to reduce the content of impurities such as Fe2O3, secondary high alumina brick volume density should be in 2.4 g/cm3, room temperature compressive strength in 60 mpa, refractoriness under load at 1460 ℃;When the Al2O3 content of the third-grade high alumina brick is more than 55%, the softening temperature of this kind of refractory brick can reach 1420℃ under load.For special high-alumina brick, it refers to the high-alumina brick with the content of Al2O3 above 82%. This kind of high-alumina brick can reach the softening temperature of 1550℃ under load, which is generally used in the parts with special requirements.Generally, we will judge the quality of a kind of firebrick according to the Al2O3 content of firebrick, of course, the Al2O3 content of firebrick has a congenital decisive effect on the performance of firebrick, in fact, the production process can also affect the quality of firebrick to a large extent.This means that different brick manufacturers even with the same materials produced brick quality and use effect will have a great difference.Zibo yu can kiln technology co., LTD. Production of refractory materials already has more than 20 years of experience, the factory is located Yu Xinmi, source of raw material with high quality bauxite, has years of experience in research and development production, advanced production equipment, a solid professional skills, solid economic strength let us in refractory industry stand out, provide the best refractory brick, we in line with customer satisfaction, let the customer trust of principle, we walked all the way into the future.

The classification of high aluminous brick is very clear, the classification on the market can be more, should recognize the actual strength of a company and the professional level of the company first while choosing firebrick, zibo yu neng kiln technology co., LTD. Welcome your investigation.



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