发明名称 METHOD FOR INJECTING BOTTOM-BLOWING AGITATION GAS IN MELTING FURNACE
摘要 PROBLEM TO BE SOLVED: To provide a method for injecting bottom-blowing agitation gas in a melting furnace by which in injection of the bottom-blowing agitation gas for agitating molten metal into the melting furnace, strong swiveling flow is generated in the molten metal in the melting furnace thereby the molten metal is sufficiently agitated. SOLUTION: On a furnace bottom wall of the melting furnace, four or more bottom-blowing tuyeres are provided which are arranged at an equal interval on the same circle with the furnace center axis as a center. While the one bottom-blowing tuyere selected from the arranged bottom-blowing tuyeres and having more gas-injecting quantity than those of the others are changed over to the other one successively in the same turning direction, the bottom-blowing agitation gas for agitating the molten metal is injected into the furnace from the whole arranged bottom-blowing tuyeres. COPYRIGHT: (C)2010,JPO&INPIT
申请公布号 JP2009293096(A) 申请公布日期 2009.12.17
申请号 JP20080149531 申请日期 2008.06.06
申请人 KOBE STEEL LTD 发明人 YASO ITARU
分类号 C21C5/30;C21C5/48;C21C7/00;C21C7/072;F27D3/16 主分类号 C21C5/30
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