Abstract：An investigation was carried out on control of phosphorus content of pipeline steel X80 in Shougang Jingtang company. The reason for low phosphorus distribution ratio between slag and steel at the end of steelmaking was analyzed thermodynamically. In the meantime, the suggestions for adjusting composition of converter slag were given, and the optimum amount of slag to get the corresponding dephosphorization rate and phosphorus distribution ratio was determined. The results showed that, under the condition of existing technology, high MgO content in slag led to high melting point of the final slag and subsequently resulted in relatively large difference between the measured and theoretical phosphorus distribution ratio. The calculation indicated that, for the existing process, the amount of slag to be added into converter should be controlled in the range of 43?60 kg/t.
罗 磊 赵长亮 陈玉鑫 袁天祥. 300 t复吹转炉冶炼X80管线钢磷含量控制[J]. 钢铁, 2014, 49(9): 49-54.
LUO Lei, ZHAO Chang-liang, CHEN Yu-xin, YUAN Tian-xiang. Control of Phosphorus Content for Refining Pipeline Steel X80 in 300 t Combined Blowing Converter. Iron and Steel, 2014, 49(9): 49-54.
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2014, Vol. 49 
