Study and Application of Bottom Blowing Technique of Combined Blowing Converter
Li-bin YANG1,Liu LIU1,Xing-li JIAO2,Pu-qiao TONG1
1. Central Iron and Steel Research Institute, Beijing 100081, China 2. No��4 Steelmaking and Rolling General Plant, Masteel, Ma��anshan 243000, Anhui, China
Study and Application of Bottom Blowing Technique of Combined Blowing Converter
Li-bin YANG1,Liu LIU1,Xing-li JIAO2,Pu-qiao TONG1
1. Central Iron and Steel Research Institute, Beijing 100081, China 2. No��4 Steelmaking and Rolling General Plant, Masteel, Ma��anshan 243000, Anhui, China
ժҪ A The water modelling experiments of 300 t converter concerning combined blowing parameters, the number, and configuration of bottom nozzles are carried out. The results show that the arrangement of 16 bottom nozzles at 0��40D and 0��45D (hearth diameter) concentric circles is the reasonable solution. The combined blowing steelmaking technique of 300 t converter has been developed through experiments and studies relating to optimizing the top-bottom combined blowing pattern, the number and configuration of the bottom nozzles, the type selection of bottom nozzle, and bottom nozzle maintenance techniques. The results show that the product of w��C�ݡ�w��O�� at endpoint is reduced from 0��00262 to 0��00243, average TFe content is decreased by 2%, phosphorus distribution is raised from 70��85 to 78��95, sulfur distribution is raised from 3��43 to 4��32 and manganese content is raised by 0��02%.
Abstract��A The water modelling experiments of 300 t converter concerning combined blowing parameters, the number, and configuration of bottom nozzles are carried out. The results show that the arrangement of 16 bottom nozzles at 0��40D and 0��45D (hearth diameter) concentric circles is the reasonable solution. The combined blowing steelmaking technique of 300 t converter has been developed through experiments and studies relating to optimizing the top-bottom combined blowing pattern, the number and configuration of the bottom nozzles, the type selection of bottom nozzle, and bottom nozzle maintenance techniques. The results show that the product of w��C�ݡ�w��O�� at endpoint is reduced from 0��00262 to 0��00243, average TFe content is decreased by 2%, phosphorus distribution is raised from 70��85 to 78��95, sulfur distribution is raised from 3��43 to 4��32 and manganese content is raised by 0��02%.
Li-bin YANG,Liu LIU,Xing-li JIAO,Pu-qiao TONG. Study and Application of Bottom Blowing Technique of Combined Blowing Converter[J]. �й������ڿ���, 2014, 21(1): 41-45.
Li-bin YANG,Liu LIU,Xing-li JIAO,Pu-qiao TONG. Study and Application of Bottom Blowing Technique of Combined Blowing Converter. Chinese Journal of Iron and Steel, 2014, 21(1): 41-45.
2014, Vol. 21 
