摘要
针对唐钢第二钢轧厂炉容较小,出钢温度偏高,一次倒炉磷合格率偏低,石灰消耗较高的问题,运用化学分析、理论计算、工艺分析等方法,分析了脱磷反应的热力学因素,提出促进前期成渣、降低出钢温度、减少回磷量等措施,使转炉石灰消耗控制在35 kg/t以下,钢包运行周转和控制空包等待时间少于40 min,出钢温度降低了25℃左右,挡渣成功率由85%提高到了90%以上,在降低石灰消耗的同时,提高了脱磷效率。
In order to address the problems of small converter capacity, high tapping temperature, low phosphorus qualification rate at one time turning down and high lime consumption, with methods of chemical analysis, theoretical calculation and process analysis, the authors analyze thermodynamical factors of dephosphorization reaction, and put forward measures of promoting slagging at early phase, lowering tapping temperature, and decreasing rephosphorizing quantity, in order to control lime consumption less than 35 kg/t, shorten ladle turnover and empty ladle waiting time to no more than 40 min, lower tapping temperature by about 25~C, raise slag stopping rate from 85% to over 90% and improve dephosphorization efficiency while reducing lime consumption.
出处
《天津冶金》
CAS
2013年第5期1-2,5,共3页
Tianjin Metallurgy
关键词
转炉
脱磷
炉渣
温度
回磷
converter
dephosphorization
slag
temperature
rephosphorization
