Method of adding iron-based powder metal to molten steel and containment vessel for iron-based powder metal

摘要

PROBLEM TO BE SOLVED: To add iron powder having a fine particle size smaller than the minimum particle size used in powder metallurgy or the like to molten steel having a slag layer at least partially solid at the upper part with high yield, high accuracy and in a short time. To do. SOLUTION: The method of adding an iron-based powder metal to a molten steel according to the present invention is to add an iron-based powder metal 8 to a molten steel 10 having a slag layer 11 having a slag layer 11 which is at least a part solid at the upper part. In a method of adding powder metal, an iron storage container 1 containing the iron-based powder metal is immersed in molten steel by penetrating the slag layer, and the bottom surface of the storage container is melted and opened. The iron-based powder metal stored in the storage container is added to the molten steel. [Selection diagram] Fig. 1