DMK made of magnesite and chromite, processed by high temperature firing. With properties of excellent thermal shock stability, slag attack resistance, thermal fatigue resistance, vacuum damage resistance. In addition, they are resistance to oxidation-reduction, comparatively better wear resistance and erosion resistance. Under vacuum refining conditions, or strong oxidation atmosphere, or ultrahigh temperature liquid erosion, or high alkaline slag liquid and alkalinity changes slag liquid attacks, the service life is second after RMK, and even more economical furnace lining refractories.
They are widely used at Steel Smelting Furnaces working linings (e.g. RH Degasser, VOD Ladles, AOD Converters, EAF Furnace, Converters etc.) or critical parts safety linings, Non-ferrous Smelting Furnaces working linings (IC3 Converters, Pierce Smith Furnaces, Noranda Furnaces, Outokumpu Flash Smelting Furnaces, Reverberatory Furnaces etc.). Sometimes they are used at Chemical Industries and Paper Industries furnaces working lining bricks.
