| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recycling method in a converter process with which slag amount for recycling after decarburizing is controlled and the amount is accurately grasped at the right amount and the control of dephosphorization refining is not deteriorated. <P>SOLUTION: In the converter process, in which a first process for charging main raw material into the converter, a second process for performing desiliconization/dephosphorization, a third process for discharging the slag generated in the second process by tilting the converter, a fourth process for standing up the furnace and decarburizing by supplying oxygen from a top-blown lance and a fifth process for tapping off the produced molten steel, are performed in this order, and after remaining the slag generated after decarburization refining in the fifth process, the converter is returned back to the first process and repeatedly applied from the first process to the fifth process; when a part of the generated slag remained in the converter is discharged by tilting the converter after the fifth process, the slag amount remained in the converter is controlled by controlling the tilting angle of the converter. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
