Abstract:Masakazu IIDA, Kazuhiro OGURA and Tetsui HAKONE Synopsis : Despite its importance in practical blast furnace (BF) operation, the dominant factors to control drainage rate or tapping time have not been well studied. In most cases, short tapping time has been attributed to rapid tap hole diameter enlargement. On the other hand, the experiential tendency about positive correlation between furnace hearth bottom temperature and drainage rate has been widely recognized.In order to examine the dominant factors to con… Show more
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