转炉冶炼过程回硫分析与控制  

Analysis and control on resulfurization in the process of converter steelmaking

作　　者：闫东娜[1] 张朝晖[1] 巨建涛[1] 张敏娟[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《炼钢》2011年第6期8-11,共4页Steelmaking

摘　　要：通过现场试验和理论计算,对Q345R钢在转炉冶炼中的回硫现象进行了分析。结果表明:入炉原料、转炉渣碱度、铁水脱硫残渣和转炉留渣等对回硫都有一定的影响。在相同冶炼工艺条件下,入炉原料硫含量高是造成Q345R钢冶炼过程回硫的主要原因,控制辅料和铁水带入硫是降低钢水终点硫含量的重要手段。在此基础上,提出了Q345R钢冶炼过程中减少回硫的控制方法及措施。By combining theoretical calculation with site tests the resulfurization charac- teristics in the process of converter steelmaking for Q345R steel are analyzed. Results reveal that the raw materials, the basicity of slag, slag in melted iron and slag remainder in converter have a certain impact on the resulfurization. Under the same smelting tech- nology conditions, the raw material with high content of sulfur is the main reason for re- sulfurization. Controlling the levels of sulphur in slag accessories and melted iron is an important tool to reduce the final sulfur content in converter. On that basis, the techno- logical measures to reduce resulfurization for Q345R steel are put forward.

关 键 词：回硫 Q345R钢 转炉 

分 类 号：TF704.3[冶金工程—钢铁冶金]