High purity, compact structure, strong slag resistance, thermal shock stability, With the special high class naatural magnesite ore as raw material,and treated in high temperature electric smelting furnace,with the following characteristics:calcium-silice ratio bigger than 2,and bulk density higher than 3.4G/CM3 and its full grain growth. IndexItemMgO%≥SiO2%≤CaO%≤Fe2O3%≤L.O.I.%≤BD≥(g/cm3)FM–98980 ...