The content of Al2O3 is more than 75%, the refractoriness is better than fireclay brick and the resistance to acidic and alkali is excellent. It is suitable to be used in cement kiln calcining zone. The service life is long, but the price is high.
It has good hanging kiln crust performance and good corrosion resistance. But there is a little of f-CaO in it, which make it easy to hydrolyze. So the dolomite brick is difficult to transport and storage, and few to be used in the actual production.
It has good hanging kiln crust performance, and more for the calcining zone. The disadvantages are the poor thermal shock resistance, and the toxic Cr+6, so the production and use of magnesium-chrome brick are gradually reduced.
It is mostly used for transition zone, with good seismic performance and anti-reduction, but the refractoriness is slightly worse.
This brick contains a small amount of ZrO, which makes the structure from the martensite into fine line shape in the process of temperature rising. This change makes the brick more resistant to alkaline, stripping and slag.
Its refractoriness is low, but with the high strength and thermal shock resistance. It is mostly used for the grate cooler, kiln hood and so on.
It is resistant to the high temperature (about 1800℃, the softening temperature of the load in 1620-1640℃), thermal expansion coefficient is low, the thermal shock resistance is good, and the wear resistance is excellent. It is mostly used for cooling zone and kilneye.
It has high thermal shock performance, high strength and good wear resistance, suitable for transition zone.