| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary material for iron steel refining low in risk of firing during storage while exhibiting desulfurization effect of hot pig iron.SOLUTION: In a secondary material for iron steel refining for promoting a desulfurization reaction in hot pig iron, lime is supplied with the hot pig iron, the amount of contained aluminum nitride is set at 20 wt.% or more by weight percentage (wt%). At this time, a mixture of lime and the secondary material for iron steel refining is used as a desulfuring agent and the amount of the secondary material for iron steel refining in the desulfuring agent is adjusted to for example about 5.0 wt% by weight percentage. |
