| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide ferrosilicon nitride powder capable of improving the corrosion resistance, strength and crack resistance (high temperature viscosity) of refractory, the refractory using the same, particularly suitable as an iron tapping trough material or a mud material for closing a blast furnace tap hole. <P>SOLUTION: The ferrosilicon nitride powder contains calcium cyanamide (CaCN<SB>2</SB>). The ferrosilicon nitride powder comprises 2-40 mass% calcium cyanamide (CaCN<SB>2</SB>), 40-96 mass% silicon nitride (Si<SB>3</SB>N<SB>4</SB>) and 2-30 mass% iron (Fe). The refractory comprises the ferrosilicon nitride powder, heat resistant aggregate and carbon powder and/or an organic binder producing carbon by heating. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
