单直孔喷枪与双侧孔喷枪的脱硫效果分析  

Comparison on desulphurization effect between single bottom hole lance and double side hole lance

作　　者：吴明[1] 牛金印[1] 吴发达[1] 王军[1] 

机构地区：[1]马鞍山钢铁股份公司第一钢轧总厂,安徽马鞍山243000

出　　处：《炼钢》2010年第4期1-4,11,共5页Steelmaking

摘　　要：马鞍山钢铁股份公司第一钢轧总厂针对复合喷吹脱硫工艺中采用单直孔喷枪存在终点命中率低、镁粉消耗高、易产生喷溅、温度损失大、喷吹时间长等问题,通过改造喷枪结构,采用一种新型双侧孔喷枪并合理优化喷吹参数,取得明显脱硫效果。在铁水初始w(S)=0.03%～0.04%,终点目标w(S)≤0.002%条件下,达到了终点命中率提高7%、镁粉消耗降低0.11kg/t、温度损失减少6℃、喷吹时间缩短2.5min和喷溅得到控制等效果,同时大幅度降低了脱硫成本。In light of the problems existing in the process of hot metal desulphurization by injecting Mg-CaO compound, such as low end hit ratio, high Mg powder consumption, frequent slag splashing, big temperature loss and long powder injection time the structure of the lance has been revamped and a new double side hole lance adopted and the processing parameters optimized as well. As the results prominent effect has been achieved. Under the conditions of initial mass fraction of sulfur 0.03 %-0. 04 % and final S 0. 002 % for the hot metal, the end hit ratio has been increased by 7 % and Mg powder consumption decreased by 0. 11 kg/t, temperature loss decreased by 6 ℃ and injection time shortened by 2. 5 minutes and in the meanwhile the cost for desulphurization has been largely reduced.

关 键 词：喷吹脱硫 单直孔喷 双侧孔喷 效果分析 

分 类 号：TF704.3[冶金工程—钢铁冶金]