The regular magnesia bricks are made from dense dead burnt magnesia that makes the bricks of good refractoriness, corrosion-resistance, which are widely used in checker chamber of glass tank, lime kiln, non-ferrous metallurgical furnaces, open hearth furnace, iron mixer , electric arc furnace of steel making, ferro-alloy furnace and etc.

The bricks with MgO 95% or more in content made from the secondary-burning dead burned magnesia or electro fused magnesia, which have the features of highly directly bonded and corrosion resistance and widely used in various kinds of high temperature kilns and furnaces.