120 t转炉少渣冶炼工艺研究和实践  

Research and practice of less slag smelting technology in 120 t converter

作　　者：富强 郭晓春 王志强 王健 

机构地区：[1]本钢集团有限公司北营炼钢厂,辽宁本溪117017

出　　处：《炼钢》2017年第6期5-8,共4页Steelmaking

摘　　要：本钢集团有限公司北营炼钢厂转炉脱磷以往采用高碱度、大渣量、高氧化性、低温的"三高一低"工艺,较多强调石灰加入量,导致石灰消耗过高(40~50 kg/t),忽略了炉渣流动性和热力学条件。2016年开始对120 t转炉渣系进行研究,通过降低炉渣熔点,改变其流动性,改善动力学条件,采集3 500组生产数据验证,转炉石灰消耗由42 kg/t降低到33 kg/t,减少了1/5的用量,终点脱磷率由87%提高到92%。通过大量生产实践证明转炉少渣冶炼是可行的。Converter dephosphorization in Beiying steelmaking plant of Benxi steel group corporation, depended on high basicity, large quantity of slag, high oxidization, low temperature technology in the past. More emphasis on the amount of lime caused high lime consumption, being 40 - 50 kg/t, and ignoring the slag fluidity and thermodynamic conditions. The plant began to study slag-forming process in 120 t converter in 2016, by reducing slag melting point, changing its liquidity, and improving dynamic conditions. Lime consumption of converter reduced from 42 kg/t to 33 kg/t, decreased by 1/5. And the dephosphorization rate of molten steel in converter endpoint increased form 87 % to 92 %. A large number of production practices show that the converter less slag smelting process was feasible.

关 键 词：转炉 少渣冶炼 留渣 脱磷率 石灰消耗 

分 类 号：TF703[冶金工程—钢铁冶金]