ABSTRACT

In the present work, a new ladle dephosphorization process has been developed using the dispersed in situ phases induced by an explosive reaction of the composite balls with slag forming materials. A composite ball with this function has been designed and prepared using a laboratory model batch type balling disc (at 12 rev min⁻¹) and then has been fed during the convert tapping process. The results indicate that the explosion reaction of a composite ball at steelmaking temperature can take place and plenty of fine powders have been released. Feeding composite ball during converter tapping is a new process and the phosphorus in the molten steel can be removed effectively. Using this technique, the average dephosphorization rate is about 50% and the lowest phosphors in the molten steel can approach 40 ppm. Furthermore, there is no phosphorus reversion phenomenon occurred after the following procedures. Further study is recommended.

摘要

在目前的工作中，已经开发了一种新的钢包脱磷工艺，该工艺使用由复合球与成渣材料的爆炸反应引起的原位分散相。使用实验室模型批量型球盘（在 12 rev min ^-1) 然后在转换攻丝过程中被送入。结果表明，复合球在炼钢温度下发生爆炸反应，释放出大量细粉。转炉出钢时加入复合球是一种新工艺，可以有效去除钢水中的磷。使用这种技术，平均脱磷率约为 50%，钢水中的最低磷可接近 40 ppm。此外，经过以下程序后，没有发生磷还原现象。建议进一步研究。