基于投掷式探头的转炉终点自动控制技术的应用

利用投掷式探头模拟副枪进行钢水测量,同时改进静、动态模型,实现了100 t转炉无副枪、无烟气分析自动炼钢技术。应用结果表明,终点双命中率提高到90.82%,补吹率由投运前的平均28.3%减少到6.76%,金属消耗降低,吹炼过程平稳,喷溅减少。同时还建立了终点低磷的吹炼模型,转炉的脱磷率达90%以上,平均出钢磷质量分数控制在0.010%~0.015%左右。

Application of the end-point automatic control technology of converter with throwing probes

Automatic steelmaking technology without sublance and flue gas analyzer for 100t converter was developed using throwing probes to simulate sublance for molten steel measurement and simultaneous improving the static model and dynamic model of steelmaking.The results showed that the end hitting rate increased to 90.82 %,the reblowing rate reduced from 28.37 % to 6.76 %,the consumption of hot metal decreased,and stable melting process with less spillage was achieved.Using the low phosphorus model established,the rate of dephosphorization increased to over 90 % and the average phosphorus content of molten steel reduced to 0.010 %~0.015 %.