| 摘要 |
PURPOSE:To obtain magnesia-carbon refractories excellent in slag corrosion resistance and spalling resistance by incorporating an alumina powder as a corundum phase into a compounded compsn. comprising magnesia-carbon-metal. CONSTITUTION:(A) Magnesia by 70-95wt.%, (B) carbon (especially flake graphite is preferable) by 5-25wt.% and (C) metal (Al Mg, Si, Cr, and Ti are preferable) powder by 0.5wt.%, in total 100wt.% are mixed, to which (D) alumina powder (preferably a fine powder of 10mum average particle diameter by 2-10wt.% is added. Then the mixture is calcined to produce a MgO.Al2O3 spinel phase and to obtain the magnesia-carbon refractories. |
