The amounts of oxygen and sulfur in liquid steel could be reduced by synthetic slag treatment during ld converter tapping, therefore, the quality of liquid steel was improved.
转炉出钢时对钢水进行合成渣处理，可以同时降低钢水中氧和硫的含量，综合提高钢水质量。
2
The oxygen activity of converter molten steel directly influences the yield of alloy and quality of steel.
转炉钢水中的氧含量直接影响合金收得率和钢水的质量。
3
The automatic pressure control of oxygen is an ideal strategy for steel making to ensure the quality. The author designed a pressure limited and interlock controller for oxygen blowing of converter.