摘要
通过工业试验对低碳冷镦钢的LF精炼渣成分进行了优化。试验结果表明:适合于冶炼低碳冷镦钢的精炼渣成分为w(CaO)=50%～55%、w(Al2O3)=30%～35%、w(CaF2)=5%～10%、w(SiO2)<5%、w(MgO)<5%、w(FeO)<1%;LF精炼过程可将钢水中w(S)从389×10-6降到50×10-6,w(T.O)从54.0×10-6降到21.1×10-6。当钢水中w(S)<50×10-6,钙处理后夹杂物中平均w(S)<1.9%。将优化后的工艺应用于低碳冷镦钢的批量生产后,精炼渣料消耗降低了6.5 kg/t,吨钢成本降低了10元以上。
The chemical compositions of ladle slag for cold heading steel are optimized through plant-scale experiments. Experimental results show the suitable chemical com- positions are wCaO）=50%-55%、w（A12O3）=30%-35%、w（CaF2）=5%-10%、w（Si02）〈5%、w（MgO）〈5%、w（FeO）〈1%. In the process of LF refining the quality fraction of sulfur can be reduced from 389×10^-6tO 50×10^-6 and the quality fraction of total oxygen can be cut down from 54. 0 ×10^-6 to 21.1 ×10^-6. The quality fraction of sulfur in inclusions after calcium treatment is less than 1.9 % given that the quality fraction of sulfur in steel is less than 50 ×10^-6. The consumption of slag-making materials decreases by 6. 5 kg/t and the cost decreases more than 10 Yuan/t after the optimized ladle slag is applied in mass production of low carbon cold heading steel.
出处
《炼钢》
CAS
北大核心
2012年第4期13-15,19,共4页
Steelmaking
关键词
冷镦钢
LF精炼渣
脱硫
夹杂物
cold heading steel
LF refining slag
desulphurization
inclusion
