| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently removing oxide by supplying gas into molten metal in a vessel. SOLUTION: The method of removing the oxide has the (1)-(3) processes. (1) The fluidity of the molten metal, bubble distribution and oxide distribution in the vessel are obtained with a mathematical equation model. (2) Based on this result, a probability to the catch and removal of the oxide in each position in the vessel is obtained. (3) Then, a gas supplying position and/or a gas supplying amount of maximizing the removing amount of the oxide are decided.
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