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BUBBLE GENERATION DEVICE AND BUBBLE GENERATION METHOD IN MOLTEN METAL
PROBLEM TO BE SOLVED: To provide a bubble generation device and a bubble generation method in which generated bubbles can be made fine when blowing gas into a molten metal to generate bubbles.SOLUTION: When generating bubbles in a molten metal by blowing gas into the molten metal through a gas blowing refractory contacting to the molten metal, a refractory including oxygen ion conductivity is used as the gas blowing refractory, and gas blowing is implemented while applying potential difference of 3 V or more as the average is applied between the gas blowing refractory and the molten metal so that the gas blowing refractory side becomes the negative electrode. The refractory including oxygen ion conductivity is preferably stabilized zirconia, stabilized zirconia-graphite (graphite content of 22 mass% or less). As the wettability between the refractory and the molten metal is improved, generated bubbles can be made fine.SELECTED DRAWING: Figure 1
【課題】溶融金属中にガスを吹き込んで気泡を発生するに際し、発生する気泡を微細化することのできる気泡発生装置及び気泡発生方法を提供する。【解決手段】溶融金属に接するガス吹き込み耐火物を通して溶融金属にガスを吹き込むことによって溶融金属内に気泡を発生させるに際し、ガス吹き込み耐火物として酸素イオン導電性を有する耐火物を用い、前記ガス吹き込み耐火物と溶融金属との間に、ガス吹き込み耐火物側が負極となるように平均３Ｖ以上の電位差を印加しながらガス吹き込みを行う。酸素イオン導電性を有する耐火物は、安定化ジルコニア、安定化ジルコニア−グラファイト（グラファイト含有量２２質量％以下）が好ましい。耐火物と溶融金属の濡れ性が改善し、発生する気泡を微細化することができる。【選択図】図１
BUBBLE GENERATION DEVICE AND BUBBLE GENERATION METHOD IN MOLTEN METAL
PROBLEM TO BE SOLVED: To provide a bubble generation device and a bubble generation method in which generated bubbles can be made fine when blowing gas into a molten metal to generate bubbles.SOLUTION: When generating bubbles in a molten metal by blowing gas into the molten metal through a gas blowing refractory contacting to the molten metal, a refractory including oxygen ion conductivity is used as the gas blowing refractory, and gas blowing is implemented while applying potential difference of 3 V or more as the average is applied between the gas blowing refractory and the molten metal so that the gas blowing refractory side becomes the negative electrode. The refractory including oxygen ion conductivity is preferably stabilized zirconia, stabilized zirconia-graphite (graphite content of 22 mass% or less). As the wettability between the refractory and the molten metal is improved, generated bubbles can be made fine.SELECTED DRAWING: Figure 1
【課題】溶融金属中にガスを吹き込んで気泡を発生するに際し、発生する気泡を微細化することのできる気泡発生装置及び気泡発生方法を提供する。【解決手段】溶融金属に接するガス吹き込み耐火物を通して溶融金属にガスを吹き込むことによって溶融金属内に気泡を発生させるに際し、ガス吹き込み耐火物として酸素イオン導電性を有する耐火物を用い、前記ガス吹き込み耐火物と溶融金属との間に、ガス吹き込み耐火物側が負極となるように平均３Ｖ以上の電位差を印加しながらガス吹き込みを行う。酸素イオン導電性を有する耐火物は、安定化ジルコニア、安定化ジルコニア−グラファイト（グラファイト含有量２２質量％以下）が好ましい。耐火物と溶融金属の濡れ性が改善し、発生する気泡を微細化することができる。【選択図】図１
BUBBLE GENERATION DEVICE AND BUBBLE GENERATION METHOD IN MOLTEN METAL
溶融金属内の気泡発生装置及び気泡発生方法
TAGUCHI KENJI (author) / IKEMOTO TADASHI (author) / KATO YUICHI (author)
2017-02-02
Patent
Electronic Resource
Japanese
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