Magnesite can be divided into, medium - grade magnesite, high - purity magnesia and reburn magnesia.
The magnesite is made of natural magnesite and calcined by high temperature shaft kiln. The purpose of reburning magnesia is to make bricks and produce raw materials for refractory materials. The finished products are used for steel making, electric furnace bottom and ramming lining. It is A selected special grade A natural magnesite or high pure light burning magnesia granules, which is fused in an arc furnace. The product has high purity, crystal grain of large, compact structure, strong resistance to slag material, good thermal shock stability, therefore, the purpose of the fused magnesia is: it is a kind of excellent high temperature electrical insulation materials, and production of high-grade magnesia brick, magnesia carbon brick and important raw materials.
The medium - grade magnesite is produced by using the MgO content of 97% as the raw material, and by pressing ball, high temperature shaft kiln calcining and other processes. Good sintering degree, crystal density. The purpose of medium - grade magnesia is: it is the high - quality raw material for the production of medium - grade magnesia refractory products.
High purity magnesia sand is made of natural super - grade magnesite flotation by light burning, fine grinding, pressure ball and super high temperature oil shaft kiln. The purpose of high purity magnesia is: it is a high quality raw material for making bricks and refractory refractory materials.