（1．State Key Laboratory of Advanced Metallurgy，University of Science and Technology Beijing， Beijing 100083，China 2．School of Metallurgy and Ecologic Engineering， University of Science and Technology Beijing，Beijing 100083， China 3．Nanjing Iron and Steel Corporation， Nanjing 210035， Jiangsu， China）
Abstract：In order to dephosphorized efficiently at the first deslagging with double slag method in combined converter，the theoretically directed temperature of first deslagging was analyzed and calculated in thermodynamics．In this paper，the new model of temperature controlling of first deslagging was proposed．Through field test，the dephosphorization efficiency was studied at different temperature of first deslagging．The results show that it can make the phosphorus content of semi-steel decreased by 0.034%，dephosphorization rate increased by 28%，the phosphorus partition ratio improved by 28 when the temperature of first deslagging was increased from 1348℃ to 1427℃，and it can also achieve high dephosphorization efficiency of phosphorus content removed under 0.025%，dephosphorization rate more than 79%，the phosphorus partition ratio over 61 at first deslagging of double slag dephosphorization process．
周朝刚，李晶，武贺，蔡可森，吴国平，曹余良. 转炉双渣脱磷一次倒渣温度研究[J]. 钢铁, 2014, 49(3): 24-28.
ZHOU Chao-gang ，，LI Jing，，WU He，，CAI Ke-sen，WU Guo-ping，CAO Yu-liang. Study on the Temperature of First Deslagging of Double Slag Dephosphorization in Converter. Iron and Steel, 2014, 49(3): 24-28.
2014, Vol. 49 
