【摘要】 在1 873 K的实验室条件下,利用CH₄对增氧后的纯铁液进行脱氧实验,研究了CH₄对钢液氧含量的去除效果。研究结果表明:利用CH₄对钢液进行脱氧是完全可行的。通气前8 min,钢液氧含量降低明显,通气后8 min,钢液氧含量降低较为缓慢,脱氧速度和CH₄利用率逐渐降低。相同时间内,钢液氧含量随脱氧气体流量的增大而减少,相比于纯CH₄气体,氩气和CH₄的混合气体对降低钢液氧含量更为显著。与Al相比,采用CH₄脱氧能明显降低钢中Al₂O₃夹杂物的含量,在一定程度上提高了钢液的洁净度,对开发无污染的脱氧技术提供参考。更多还原

【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.更多还原