Magnesia based refractory is a typical basic material with high refractoriness. It made a substantial contribution to the development of iron and steel making. At present, its application is somewhat restricted to safety linings.
Magnesia bricks later advanced into the development of magnesia carbon bricks, magnesia alumina carbon bricks, magnesia chrome bricks and magnesia spinels to improve spalling resistance, neutral slag corrosion resistance, and thermal strength.
The magnesia bricks produced in China use high-quality fused magnesia as its raw material; the highest grade contains MgO in excess of 98%, with large crystal granules and high chemical stability. It is especially suited to harsh working conditions like high temperature and heavy erosion.