PIG IRON INGOT REMOVING METHOD FOR REMOVING PIG IRON INGOT SOLIDIFIED IN TORPEDO CAR

To provide a method capable of easily removing a remainder of a pig iron ingot by removing a part of a solidified pig iron ingot, and thus capable of reusing a torpedo car.SOLUTION: A pig iron ingot removing method for removing a part (pig iron ingot) of a pig iron ingot A, which is an ingot of a molten pig iron solidified so as to be surrounded by a refractory material 15 existing inside an iron skin 14 of a torpedo car 10, comprises: a continuous hole forming step of forming a continuous hole 31 so as to surround the entire circumference of a removal target portion (pig iron ingot) that is an inner portion in a top view, the continuous hole extending from an upper surface of the pig iron ingot A toward a bottom part to a predetermined depth through an opening 16 of the torpedo car 10; a cutting step of horizontally cutting the removal target portion (pig iron ingot) of the pig iron ingot A at a bottom part of the continuous hole 31 using a wire saw; and a drawing step of pulling up the removal target portion (pig iron ingot) of the pig iron ingot A with respect to the torpedo car 10 and taking out the cut pig iron ingot.SELECTED DRAWING: Figure 2 【課題】固化した銑鉄塊の一部を除去することにより銑鉄塊の残部を容易に除去することができ、ひいては混銑車を再利用することが可能な方法を提供する。【解決手段】混銑車１０の鉄皮１４の内方に存在する耐火物１５に取り囲まれて固化した溶銑の塊である銑鉄塊Ａの一部（銑鉄塊）を除去する銑鉄塊の除去方法であって、混銑車１０の開口１６を介して、銑鉄塊Ａの上面から底部に向って所定の深さまで延びる連続孔２１を上面視で内方の部分である除去対象部分（銑鉄塊）の周囲を全体に亘って取り囲むように形成する連続孔形成工程と、連続孔３１の底部にて銑鉄塊Ａの除去対象部分（銑鉄塊）を水平方向にワイヤソーを用いて切断する切断工程と、銑鉄塊Ａの除去対象部分（銑鉄塊）を混銑車１０に対して引き上げて、切断した銑鉄塊を取り出す引出工程とを備える。【選択図】図２