The best corundum content greater than 90% alumina brick, corundum refractory products based crystalline phase

complete conversion of the quartz, the true specific gravity is low (2.34 or less), a low content of residual silica (1%) when using a small volume change.

Refractory bricks are usually stacked on principle, as far as possible in the storage sub-regional or sub-libraries focus stacking to facilitate management and transport. Specific principles are:

Fire Clay Bricks can be used to make high temperature insulation, ultra-high temperature insulation filler, high temperature refractory lightweight aggregate concrete, high temperature castable.

Magnesia widely used non-ferrous metal smelting and other high-temperature industrial furnaces, basic open-hearth steelmaking, electric stove and oven walls.

So as long as it is composed of many mineral substances of magnesia brick. Magnesite brick with strong alkali, high density, etc.