公开(公告)号：EP1269796A4

公开(公告)日：2004-11-24

申请号：EP01920522

申请日：2001-03-19

申请人： SPECIALTY MINERALS MICHIGAN

发明人： STENDERA JAMES ,  VIERS DAVID ,  DUCHNAK MARK

IPC分类号： H05B7/18 ,  C21B13/12 ,  C21C5/52 ,  C21C5/54 ,  F27B3/08 ,  F27B3/28 ,  F27D3/18 ,  F27D19/00 ,  H05B11/00 ,  F27D17/00

CPC分类号： F27B3/28 ,  C21C5/5217 ,  C21C5/5294 ,  C21C5/54 ,  F27B3/085 ,  F27D3/18 ,  F27D2019/0075 ,  Y02P10/216

摘要： A metal alloy such as steel is manufactured in an electric arc furnace system equipped with at least one sensor (20), at least one controller (24) comprising a logic program, and a variable valve (18) in fluid communication with an electric arc furnace (10) and a charged material source (16). The nature and quality of a slag formed over a molten metal in the furnace (10) is dynamically controlled by continuously adjusting the addition of one or more materials to be added to the furnace through the variable valve (18). The slag is foamed during the steelmaking process by injecting carbon into the arc furnace continuously and variable over a flow rate of about 25 lbs/min to about 200 lbs/min.