河南Purchase of calcined magnesia

The main chemical composition is MgO, the mineral composition is periclase equiaxed crystal system, the density is 3.56 ～ 3.65g/cm, the Mohs hardness is 5.5, the melting point is 2800 ℃, and it volatilizes significantly at 1800 ～ 2400 ℃. Pure periclase is colorless. With the increase of Fe2O3 and CaO content, its color changes from light to dark, yellow, brown and black brown. The grain size of periclase increases with the increase of calcination temperature and holding time, and its hydration resistance and slag corrosion resistance also increase.