CHEN Wei1，WANG Jian- jun1，CHANG Li -zhong1，PENG Cheng- song1，MENG Li- peng2
（1. School of Metallurgical Engineering，Anhui University of Technology，Ma，anshan 243000，Anhui，China 2. Baosteel Zhanjiang Iron and Steel Co.，Ltd.，Zhanjiang 524033，Guangdong，China）
Abstract：In the laboratory condition of 1 873 K，the removal efficiency of the oxygen content of molten steel by using CH4 was studied by deoxidation experiment with pure liquid steel and oxygenation.The results show that using methane gas for deoxidation of molten steel is absolutely feasible. Eight minutes before ventilation，the oxygen content reduces significantly；eight minutes after ventilation，the oxygen content reduces more slowly and deoxidization rate and utilization rate of methane gas decreases gradually. At the same time，oxygen content in the steel reduces with the increasing of deoxidization gas flow rate. However，compared with the pure methane gas，a mixture of argon and methane gas is more significant to reduce steel liquid oxygen content. Compared with A1，the content of Al2O3 inclusions in steel can be reduced obviously by the use of CH4 deoxidation and the purity of molten steel is improved to some extent，which can provide a reference for the development of pollution-free deoxidation technology.
2017, Vol. 36 
