直流钢包炉中空电极喷吹Ar-H_2混合气体对钢水温度的影响  

The Influence of Hollow Electrode Argon and Hydrogen Co-injection on Temperature of Molten Steel during Direct Current Ladle Furnace Refining

作　　者：张慧书[1] 战东平[1] 姜周华[1] 陈兆平[2] 沈海军[2] 张戈[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]宝山钢铁股份有限公司宝钢研究院,上海201900

出　　处：《工业加热》2009年第5期10-13,共4页Industrial Heating

基　　金：国家自然科学基金资助项目(50804009);中国博士后基金资助项目(2005038251)

摘　　要：在100kg多功能直流钢包炉(DC-LF)上,通过LF中空石墨电极喷吹Ar-H2混合气体进行了精炼低碳钢的实验研究。实验结果表明,与实心电极冶炼相比,通过LF中空石墨电极喷吹Ar和Ar-H2气体后,熔池的升温速率明显加快。随着Ar-H2混合气体中H2体积分数的增加,体系粒子数密度增大,升温速率增大。喷吹??(Ar)=80%和??(H2)=20%的混合气体的平均升温速率最大,是采用实心电极冶炼时平均升温速率的6.92倍。通过LF中空石墨电极喷吹Ar或Ar-H2混合气体时,电弧电流不变,电压降低。The argon and hydrogen co-injection tests were carried out with low carbon steel melts of 100kg in a multi-function direct current ladle furnace （DC-LF） equipped with a hollow graphite electrode. It is shown that the heating rates of the heats with Ar or Ar-H2 injection are higher than that of the normal solid graphite electrode heat. With the increasing of H2 contents in Ar-H2 mixture gas, the species densities and heating rate become bigger. The heating rate of the heats with 80%Ar-20%H2 injection is the biggest one and it is 6.92 times than that of the normal solid graphite electrode heat. When Ar or Ar-H2 injection is injected into LF, the electric current doesn＇t change, ＇but the voltage becomes lower.

关 键 词：直流钢包炉 炼钢 中空电极 吹气 氢气 

分 类 号：TF769.2[冶金工程—钢铁冶金]