合理的转炉废钢比探析

Study on reasonable scrap ratio during converter steelmaking

  • 摘要: 针对八钢铁水供应不足且铁水成分波动较大的问题,文中在现场冶炼数据采集的基础上,依据转炉冶炼的物料平衡、热平衡以及现场试验,研究了铁水成分、铁水重量、铁水温度、出钢温度以及留渣操作等工艺参数对废钢加入量的影响.通过采用留渣操作、适当提高铁水温度、减少辅料消耗以及适当降低转炉出钢温度等措施,转炉废钢比由16.4%提高到21.3%,脱磷率由79.3%提高到93.3%,同时石灰和白云石消耗量分别降低了3.3 kg/t钢和6.7 kg/t钢.

     

    Abstract: In view of the shortage of hot metal and the fluctuation of hot metal composition in Xinjiang Bayi Iron and Steel Co., Ltd., we conducted a study on the influence of process parameters, such as the composition, weight and temperature of hot metal, the tapping temperature and retaining slag, on the amount of scrap added, based on the data collection of field steelmaking, the material balance and heat balance of converter steelmaking and field testing. The converter scrap ratio increased from 16.4% to 21.3%, and the dephosphorization rate from 79.3% to 93.3% while the consumption of lime and dolomite decreased by 3.3 kg and 6.7 kg per ton of steel, respectively by retaining slag, appropriately increasing the temperature of hot metal, reducing the consumption of excipients and the tapping temperature of the converter.

     

/

返回文章
返回