采用石油液化气进行钢液脱氧

在实验室利用石油液化气对钢中氧进行去除。研究结果表明：利用石油液化气对钢液脱氧是可行的，配合 VD 真空冶炼，可用于生产高碳、高质量洁净钢。钢液脱氧时，通入氩气和液化气两者的混合气体的脱氧效果优于单纯通入单一气体，钢中氧含量下降更明显，碳含量增加幅度更低。混合气体对钢液脱氧操作8 min 后，钢中脱氧减慢，氧含量下降不明显。钢液脱氧的起始阶段，钢中碳含量增加较为缓慢，当钢中氧含量降低到一定水平后，钢中碳含量迅速增加。通入氩气，加强了钢液搅拌，在一定程度上抑制钢中氢含量的增加速度，促进了钢中氢的去除。

Deoxidation in molten steel by liquefied petroleum gas

Oxygen in molten steel was removed with liquefied petroleum gas in laboratory. The results show that it is feasible to use liquefied petroleum gas for deoxidation in molten steel to produce high-carbon and high-quality clean steel with VD vacuum smel-ting assistance. The deoxidation rate is faster with a mixed gas of argon and liquefied petroleum gas than just using a single gas, the oxygen content decreases more significantly and the rate of increase of the carbon content declines. After deoxidation for 8 min, the ve-locity of deoxidation decreases, and the oxygen content has no significant declination. At the beginning of deoxidation, the carbon con-tent increases slowly; however, while the oxygen content decreases to a certain level the carbon content rapidly increases. Argon does have effect on stirring molten steel, and lead to having a good dynamic condition to facilitate the removal of hydrogen in molten steel.