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利用1/9有机玻璃模型测定了脱磷预处理转炉在不同喷吹条件下的熔池混匀时间、顶吹射流对熔池的穿透深度,渣-钢之间的乳化率。研究了废钢在脱磷预处理转炉熔池中的运动状况,测量了不同单重的废钢在熔池中的悬浮能量。为深入了解转炉脱磷预处理的工艺特点,和转炉正常炼钢的相应数值进行了对比。根据水模测定结果,对A炉、B炉2个脱磷预处理情况进行了比较。从总体情况看,A炉的操作比较合理,预处理后的铁水中磷质量分数可降低到0.010%~0.015%,相当于日本和歌山钢厂的水平。
The 1/9 plexiglass model was used to determine the mixing time of the molten pool, the penetration depth of the top-blowing jet to the molten pool and the emulsification rate between slag and steel under different blowing conditions. The movement of scrap steel in the dephosphorization pretreatment bath was studied. The levitation energy of different single scrap in the bath was measured. In order to further understand the process characteristics of converter dephosphorization pretreatment, and the corresponding normal converter steel were compared. According to the results of water mode determination, two dephosphorization pretreatments of furnace A and furnace B were compared. From the overall situation, A furnace operation is more reasonable, pretreatment of molten iron phosphorus content can be reduced to 0.010% to 0.015%, equivalent to the level of Japan Wakayama steel mills.