中间包用高碱度覆盖剂若干熔融状态的模拟研究  

Simulation study on certain molten states of the high basicity covering flux for tundish

作　　者：陈瑜[1] 李宏[1] 王恭亮[2] 梁玫[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]石家庄钢铁有限责任公司,河北石家庄050031

出　　处：《炼钢》2010年第4期63-66,共4页Steelmaking

摘　　要：对中间包高碱度覆盖剂的若干熔融状态进行了热模拟研究,结果认为:熔融试样中w(Na2O+CaF2)=10%～12%比较合适,其开始熔化温度低于1 350℃;当w(CaO+MgO)/w(Si O2+Al2O3)=2.5左右、w(Na2O+CaF2).R=0.2～0.3时,覆盖剂对MgO质容器润湿最好;R.w(Fe2O3).w(CO2)/w(Na2O+CaF2)值对覆盖剂的隔热性能影响较明显,与熔融试样平均厚度成线性关系。Certain molten states of the high basicity covering flux for tundish were studied in this paper. The thermal simulation results show that it is more appropriate for the molten samples cotaining 10 0% to 12% Na2CO3 and CaF2; and its initial melting temperature is lower than 1 350℃. When the value of R = （CaO＋ MgO）/（SiO2 ＋ A1203） is about 2.5 and the value of w（Na2O＋ CaF2） · R is 0. 2 -0. 3, molten samples have best wetting performance for the MgO container. The value of R · w （Fe2O3）· w （CO2）/ w（Na2O＋ CaF2） may influence the heat insulation of covering flux, and is linearly correlated with the average thickness of molten sample.

关 键 词：中间包 高碱度覆盖剂 熔融状态 热模拟 

分 类 号：TF044[冶金工程—冶金物理化学]