Abstract：Catch carbon is used to produce high carbon steel with double slag and catch carbon and reblowing practice. Phosphorus removal is very crucial for refining nondephosphorized hot metal to produce high carbon steel. The phosphorus content in hot metal was decreased from 0.078%0.094% to 0.027%0.038% in 5 minutes using double slag method. When the carbon content of 0.8%1.1% in steel and phosphorus content could be reduced to 0014%0.023% using catch carbon and reblowing method. Thus 0.4%0.7% tapping carbon content and less than 0.015% phosphorus in final product could be reached by using these two methods together for theirs lower tapping phosphorus due to less rephosphorization after tapping. The high oxidizability of ths slag at high carbon content in steel benefits phosphorus removal. After the application of this method, the average tapping content of carbon was increased from 0.22% to 0.4%, the total oxygen content and nitrogen content decreased by 1.6×10-6 and 51×10-6 respectively in average.
田志红;李永东;王海宝;张小明;刘启江;李鹏程. 非脱磷铁水在210 t转炉高拉碳法冶炼高碳钢的生产工艺研究及实践[J]. 钢铁, 2009, 44(2): 36-0.
TIAN Zhihong;LI Yongdong;WANG Haibao;ZHANG Xiaoming;LIU Qijiang;LI Pengcheng. Study and Application of Catch Carbon to Produce HighCarbon Steel on 210 t BOF. Iron and Steel, 2009, 44(2): 36-0.
2009, Vol. 44 
