260 t转炉冶炼极低磷钢的生产实践  

Production practice for super low phosphorus steel in 260 t converter

作　　者：赵雷[1] 王金辉[1] 徐国义[1] 尹宏军[1] 王富亮[1] 金百刚[1] 

机构地区：[1]鞍钢股份有限公司鲅鱼圈钢铁分公司炼钢部,辽宁营口115007

出　　处：《炼钢》2017年第6期1-4,共4页Steelmaking

摘　　要：结合复吹转炉脱磷原理,针对鞍钢股份有限公司鲅鱼圈分公司炼钢部铁水平均w(P)高达0.12%的现状,综合考虑设备布置等因素,自主开发了复吹转炉的两炉法(脱磷炉+脱碳炉)冶炼极低磷钢种技术。在应用实践中,通过优化脱磷炉和脱碳炉的两炉法脱磷工艺参数,实现了深脱磷的目的。脱磷炉脱磷率高达85%,半钢平均w(P)=0.018%;脱碳炉冶炼终点钢水平均w(P)=0.001 2%;成品钢中平均w(P)<0.002 0%,实现了极低磷钢的批量稳定生产。Two converter methods （dephosphorization converter ＋ decarburized converter） were used to produce super low phosphorus steel according to the dephosphorization mechanism in the high phosphorus （0.12 % ） hot metal conditions of Ansteel Bayuquan steelmaking department. The process parameters in dephosphorization converter and decarburized converter for two converter methods were researched in application process. The pre-smelting dephosphorization rate was controlled above 85 %, and the average phosphorus mass fraction was controlled in 0.018 % in dephosphorization furnace. The average phosphorus mass fraction was controlled in 0.001 2 % at smelting end-point. The average phosphorus mass fraction in the end product was controlled below 0. 002 0 %. And the mass production of super low phosphorus steel under the condition of high phosphorus hot metal was realized.

关 键 词：极低磷钢 脱磷 两炉法 复吹转炉 

分 类 号：TF704.4[冶金工程—钢铁冶金]