首钢京唐5 500 m3高炉出铁过程铁水温降规律

 为了研究大型高炉出铁过程铁水温降规律，对首钢京唐5 500 m3高炉出铁过程中铁水沟和炉下铁水罐内的铁水温度进行了现场实测。结果表明，高炉铁水沟中铁水温度呈周期性波动，堵口过程中铁水沟残铁温度以0.92 ℃/min的速率逐渐降低，铁口打开后铁水沟温度需40 min逐渐回升并稳定在1 475 ℃左右。尾罐是影响铁水罐受铁结束时罐内铁水温度的关键因素，尾罐比普通罐装满铁水时罐内铁水温度低25 ℃。尾罐装满铁水时罐内铁水温度与第一次受铁量有关，将尾罐放在高炉下次出铁的第二罐受铁有利于提高罐内铁水平均温度。

Temperature drop of hot metal during BF tapping in Shougang Jingtang

In order to research the temperature drop of hot meatal during BF tapping,temperature of hot metal in cast-house runners and ladles from 5500m3BF of Shougang Jingtang was tested. The results showed that hot metal tempera-ture in casthouse runners had a periodic fluctuation. The temperature of residual hot metal in runners decreased with a rate of 0.92℃/min during tapping hole blocked. After the tapping hole was opened about 40 min were taken for the tem-perature in runners to rise up to about 1475℃. Ending ladle was critical to affect the temperature of hot metal in ladles. The temperature of hot metal in ending ladles was 25℃lower than that in normal ladles and related to amount of hot metal charged in the first charging period. It was easier to get a higher average temperature if ending ladles were the sec-ond ladle to be charged in than be the first.