LANCE PIPE

• Main Authors: KUBO CHIE, OTA HIROTAKA
• Format: Patent
• Language: English; Japanese
• Published: 15.06.2023
• Subjects: BLASTING; CHEMISTRY; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; RETORTS; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; WEAPONS

To provide a lance pipe capable of preventing the immersion of molten metal into a discharge hole.SOLUTION: A lance pipe 1 in which a core pipe 2 is covered with a refractory 3 comprises: a reducer 9 in which a cross sectional area is reduced toward a discharge hole 7; and a straight pipe 8 provided between the core pipe 2 and the reducer 9 and having a diameter smaller than that of the core pipe 2.SELECTED DRAWING: Figure 2 【課題】吐出孔に溶融金属が浸入するのを防止できるランスパイプを提供する。【解決手段】芯管２を耐火物３で覆うランスパイプ１において、吐出孔７に向かって断面積が小さくなるレジューサ９と、芯管２とレジューサ９との間に設けられ、芯管２よりも直径が小さい直管８と、を備える。【選択図】図２