A FERRO-ALLOY INSERTING APPARATUS WITH REDUCED ABSORPTION OF OXYGEN AND ABSORPTION OF NITROGEN AND INSERTING METHOD THEREOF

摘要

The present invention relates to an apparatus for inserting ferro-alloy and inserting method without submerging into slag and liquid steel for reducing absorption of oxygen and absorption of nitrogen capable of inserting ferro-alloy by minimizing an incorporation of oxygen and nitrogen in a ladle treatment process of a steelmaking process upon performing a steelmaking operation, comprising: a supplying tube supplied with ferro-alloy from a hopper to insert it to a ladle and subdivided into an upper part, an inclined middle part, a lower part and having a predetermined hollow; a branched and mounted inert gas blocking unit communicated with the middle of the supplying unit and blocking, as first inert gas, air flowed in at the same time when the ferro-alloy is inserted; a branched and mounted inert gas supplying unit communicated with the base end part of the lower part of the supplying tube and blowing a second inert gas on an inserting path of the ferro-alloy; an inert gas injecting unit packing any one of the lower outer sides of the supplying unit relative to axis direction of the lower thereof and injecting a third inert gas toward the end part of the lower part thereof; and a diffusing unit diffusing the third inert gas injected while packing the supplying tube from the gas injecting unit into the end part of the supplying tube.