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在实验室基础上对比研究了w(CaO)/w(SiO2)为5、w(Al2O3)为25%的渣系A,w(CaO)/w(SiO2)为8、w(Al2O3)为46%的渣系B,与高强度合金结构钢液在1 600℃条件下反应90 min后钢水洁净度的变化,研究结果表明:随着渣系由A到B,钢中总氧质量分数平均值由12.25×10-6降低到9.25×10-6,硫质量分数平均值由19×10-6降低到8.63×10-6,炉渣的硫分配系数LS由7~17增加到120~260;渣系A、渣系B与合金钢液反应后钢中夹杂物大部分是钙镁铝硅酸盐类夹杂,并且得出渣系B精炼条件下钢中这类夹杂熔点明显低于渣系A精炼条件下的此类夹杂。
Based on the laboratory comparison, the slag system A with w (CaO) / w (SiO2) 5 and w (Al2O3) 25% % Of the slag system B, and the high strength alloy structure molten steel at 1 600 ℃ for 90 min after 90min molten steel cleanliness changes, the results show that: with the slag system from A to B, the average oxygen content of steel in the average From 12.25 × 10-6 to 9.25 × 10-6, the average sulfur content decreased from 19 × 10-6 to 8.63 × 10-6, and the sulfur distribution coefficient of slag increased from 7-17 to 120-260. Department A, slag system B and alloy steel liquid reaction steel inclusions are mostly Mg-Mg-Al-Al silicate inclusions, and concluded that slag B refining conditions of steel such inclusions melting point was significantly lower than Slag A refining Such inclusion under conditions.