本发明涉及转炉冶炼技术领域,尤其涉及一种转炉补底方法,所述方法包括执行第一阶段补底过程,在第一阶段补底过程中,先向转炉内加入粒径范围为5-20mm的补炉料,接着摇炉3-5次,再进行烧结,烧结时间为5-10min,在烧结过程中控制单支底吹元件的底吹流量为100-150Nm3/h；执行第二阶段补底过程,在第二阶段补底过程中,先向转炉内加入粒径范围为1-5mm的补炉料,接着摇炉2-4次,再进行烧结,烧结时间为5-20min,在烧结过程中控制单支底吹元件的底吹流量为100-150Nm3/h；执行第三阶段补底过程,在第三阶段补底过程中,先向转炉内加入粒径范围为0.1-1mm的补炉料,接着摇炉1-3次,再进行烧结,烧结时间为10-30min,在烧结过程中控制单支底吹元件的底吹流量为200-250Nm3/h。本发明避免了补炉过程中底吹元件堵塞。

The invention involves the field of converter smelting technology, in particular to a bottom filling method for converter, which includes: Perform the first stage of bottom filling process. In the first stage of bottom filling process, First of all, repairing mass with particle size range of 5~20mm is added to the converter, and then the furnace is shaken for 3~5 times, and then sintering is carried out. The sintering time is 5~10min, and the bottom blowing flow of the single bottom blowing component is controlled to be 100~150Nm3/h in the sintering process. Perform the second stage of bottom filling process. In the second stage of bottom filling process, First of all, repairing mass with particle size range of 1~5 mm is added to the converter, and then the furnace is shaken for 2~4 times, and then sintering is carried out. The sintering time is 5~20 min, and the bottom blowing flow of the single bottom blowing component is controlled to be 150~200 Nm3/h in the sintering process. Perform the third stage of bottom filling process. In the third stage of bottom filling process, First of all, repairing mass with particle size range of 0.1~1 mm is added to the converter, and then the furnace is shaken for 1~3 times, and then sintering is carried out. The sintering time is 10~30 min, and the bottom blowing flow of the single bottom blowing component is controlled to be 200~250 Nm3/h in the sintering process. The invention avoids the clogging of the bottom blowing component in the process of furnace filling.