Refractory bricks - High alumina bricks - Basic information

high insulating brick refractory than clay brick and semi-silica brick refractoriness should be high, up to 1750 ~ 1790 ℃, is a senior refractory
Al2O3 content of more than 90%, known as corundum brick. Because of different resources, national standards alumina brick are not entirely consistent. For example, European countries for high alumina refractory material Al2O3 content of the provisions of the lower limit of 42%. In China, according to alumina content in the high alumina brick is usually divided into three classes: Ⅰ and so on ─ ─ Al2O3 content> 75%; Ⅱ ─ ─ Al2O3 content of 60 ~ 75%; Ⅲ ─ ─ Al2O3 content of 48 ~ 60%.
Al2O3 in high alumina brick is close to neutral refractory and can resist the erosion of acid slag and alkaline slag. Because of containing SiO2, the ability of resisting alkali slag is weaker than that of acid resistant slag.
Alumina content of 48% or more of a neutral refractories material. From bauxite or other alumina content of the higher raw materials formed and calcined. High thermal stability, refractoriness above 1770 ℃. Slag resistance is good for masonry electric furnace, glass melting furnace, cement rotary furnace lining.
Mainly used for masonry blast furnace, hot stove, furnace top, blast furnace, reverberatory furnace, rotary kiln lining. In addition, high alumina brick is also widely used as open hearth lattice regenerative grid bricks, gating system with plug head, outlet brick. But the price of high-alumina brick clay brick than high, so with clay brick to meet the requirements of the place do not have to use high-alumina brick.

refractory company Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.