LANCE PIPE

PROBLEM TO BE SOLVED: To provide a lance pipe having a double pipe structure and excellent workability, which may be so securely installed and easily replaced that gas leakage hardly occurs.SOLUTION: A lance pipe 1 is provided with: a metallic inner tube 11 serving as a passage of a treating agent c...

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Bibliographic Details
Main Author YANAGI KENJI
Format Patent
LanguageEnglish
Japanese
Published 17.05.2018
Subjects
BLASTING
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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
PERFORMING OPERATIONS
POWDER METALLURGY
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
RETORTS
TRANSPORTING
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a lance pipe having a double pipe structure and excellent workability, which may be so securely installed and easily replaced that gas leakage hardly occurs.SOLUTION: A lance pipe 1 is provided with: a metallic inner tube 11 serving as a passage of a treating agent containing at least one of a solid and a gas; a metallic outer tube 12 fixed to the inner tube 11 so as to cover the outer peripheral face of the inner tube 11, which forms a cooling gas passage 121 between the outer tube and the outer peripheral face of the inner tube 11; and a flange 14 fixed to one end of the inner tube 11 and the outer tube 12 and attached to a molten metal processing apparatus 2 for supplying the treat agent and the cooling gas. The flange 14 has: an introduction opening 1411 for receiving a cooling gas from the molten metal processing apparatus 2; a lead-out opening 1412 which opens into the cooling gas passage; and an internal passage 141 extending in the radial direction of a flange formed inside the flange 14 connecting the introduction opening 1411 and the lead-out opening 1412.SELECTED DRAWING: Figure 1 【課題】ガス漏れが生じにくい確実な取り付けと交換が容易な、作業性が良い二重管構造を有するランスパイプの提供。【解決手段】ランスパイプ１は、固体とガスとの少なくとも一方を含む処理剤の通路となる金属製の内管１１と、内管１１の外周面を覆うように内管１１に固定され、内管１１の外周面との間が冷却ガスの通路となる冷却ガス通路１２１を形成する金属製の外管１２と、内管１１と外管１２の一端に固定され、処理剤および冷却ガスを供給する溶融金属処理装置２に取り付けられるフランジ１４を有するランスパイプであって、フランジ１４は溶融金属処理装置２から冷却ガスを受ける導入開口１４１１と、冷却ガス通路に開口する導出開口１４１２と、導入開口１４１１と導出開口１４１２を結ぶフランジ１４内部に形成されたフランジの径方向に伸長する内部通路１４１とを有することを特徴とする。【選択図】図１
Bibliography:Application Number: JP20160221055