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LANCE USED FOR BOTH BLOWING AND IN-FURNACE SKULL MELTING, AND OPERATION METHOD OF TOP-BOTTOM-BLOWN CONVERTER TYPE REFINING FURNACE
LANCE USED FOR BOTH BLOWING AND IN-FURNACE SKULL MELTING, AND OPERATION METHOD OF TOP-BOTTOM-BLOWN CONVERTER TYPE REFINING FURNACE
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机译：用于吹炼和炉内熔炼的喷枪以及顶吹式转炉式精炼炉的操作方法
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摘要
PROBLEM TO BE SOLVED: To efficiently remove a skull while avoiding the care of securing the time needed for melting the skull, suppressing the erosion of refractory in a converter and reducing the frequency of water leakage from a lance.;SOLUTION: In the top/bottom-blown converter type refining furnace 8, the lance 7 which is used for the blowing and also the in-furnace skull melting, is provided with a tip part injecting hole 1 arranged at the tip part and injecting oxygen for blowing, and a side surface injecting holes 2 arranged on the side surface upward the tip part injecting hole 1 and injecting the oxygen for melting the skull, and is rotatable around the axis, is used to perform the blowing while melting the in-furnace skull 10.;COPYRIGHT: (C)2006,JPO&NCIPI
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