精炼埋弧渣系对60t钢包炉(LF)钢水升温速度的影响  

Effect of Embedding Arc Refining Slag on Heat up Rate of Molten Steel in a 60 t Ladle Furnace

作　　者：刘润藻[1] 战东平[1] 姜周华[1] 姜茂发[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《特殊钢》2005年第1期57-59,共3页Special Steel

基　　金：国家科技部"十五"攻关基金资助项目 (编号 :2 0 0 1BA30 6B 0 2 0 3)

摘　　要：在 5 5～ 75kg实验钢包炉精炼渣系的研究基础上 ,采用组成 (% )为 :6 3 6～ 70 0石灰 ,2 2 7～ 2 5 0高铝矾土 ,5 0～ 13 6萤石 (S1渣 ) ;6 0 0～ 6 6 7石灰 ,2 0 8～ 2 5 0萤石 ,12 5～ 15 0火砖块 (S2渣 ) ;5 5 5～ 6 5 0石灰 ,35 0～ 4 4 5萤石 (S3渣 ) 3种渣系进行 6 0tLF精炼渣埋弧工业试验 ,所精炼的钢种为 2 0 ,2 0G ,4 0Cr ,35 CrMoA和GCr15。结果表明 ,用 3种渣系钢水平均脱硫率均为 87% ,LF在采用S1、S2、S3渣系精炼时钢水平均升温速度分别为 3 84℃ min、2 86℃ min和 2 4 8℃ min。S1渣的脱硫速度快 ,从而缩短了精炼时间。Based on research of refining slag series by 55～75 kg experimental ladle furnace (LF), the commercial production experiment of embedding arc refining slag in a 60t ladle furnace has been carried out using three kind of slag: S1 slag- 63.6～70.0 lime, 22.7～25.0 high alumina and 5.0～13.6 fluorite; S2 slag- 60.0～66.7 lime, 20.8～25.0 fluorite and 12.5～15.0 refractory block; and S3 slag- 55.5～65.0 lime and 35.0～44.5 fluorite, and the refining steel grades were 20, 20G, 40Cr, 35CrMoA and GCr15 steel. The results showed that the all average desulphurization rate of molten steel using the three slag series was 87%, and the average heat up rate of molten steel during LF refining was 3.84 ℃/min, 2.86 ℃/min and 2.48 ℃/min respectively by using S1, S2 and S3 slag series. As desulphurization speed was quick by using S1 slag therefore the refining time decreased.

关 键 词：钢水 钢包炉 精炼渣 渣系 LF精炼 脱硫速度 升温速度 40Cr GCR15 钢种 

分 类 号：TF769[冶金工程—钢铁冶金] TG422[金属学及工艺—焊接]