High alumina fire brick

1.Description
High alumina fire brick contain Al2O3 more than 48%, which is made of high grade bauxite through high temperature calcinations. Its refractories is usually above 1770 °C. The main mineral components are corundum and mullite phases. It is a kind of neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion. According to Al2O3 content,it can be divided into three degrees:The Al2O3 content is more than 75%.The Al2O3 content range from 60% to 75%.The Al2O3 content range from 48% to 60%.
2.Feature
1. High-temperature endurable .
2.Good thermal shock resistance.
3.High cold crushing strength
4.Good resistance to abrasion and corrosion.
5.Good thermal spalling resistance.
6.High mechanical strength.
7.Good volume stability at high temperature.
3.Applications
High alumina fire brick is used for building blast furnaces, hot blast stove, electric stove roof, ladle,blast furnace and reverberatory furnace, lining of rotary kiln and glass kiln and chemical industrial kiln. In addition, high alumina brick is widely used as regenerative checker brick of open hearth, pouring system with the plug head, nozzle brick, etc.