发明名称 |
ROTARY HEARTH FURNACE EXHAUST GAS DUCT APPARATUS AND METHOD FOR OPERATING SAME |
摘要 |
<p>The purpose of the present invention is to provide a rotary hearth furnace exhaust gas duct apparatus which produces reduced iron or granular metal iron by heating a raw material containing a carbonaceous reduction material and an iron oxide-containing substance, which can collect dust while also avoiding problems that accompany increases in exhaust gas amount and temperature, and which also can stably operate for a long period of time at a high thermal efficiency, and to provide a method for operating the rotary hearth furnace exhaust gas duct apparatus. A cooling unit (12) for solidifying metal salt in exhaust gas discharged from a rotary hearth furnace by cooling the exhaust gas, a collision unit (13) for colliding the exhaust gas immediately after cooling to cause the solidified metal salt to fall, and a direction conversion duct (14) for leading the collided exhaust gas in a direction other than the direction in which the metal salt fell are disposed in two stages in the aforementioned order in a rotary hearth furnace exhaust gas duct (8) in the rotary hearth furnace exhaust gas duct apparatus (11) according to the present invention.</p> |
申请公布号 |
WO2012029947(A1) |
申请公布日期 |
2012.03.08 |
申请号 |
WO2011JP70032 |
申请日期 |
2011.09.02 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO;TSUGE OSAMU;TOKUDA KOJI;MIZUTANI NORIAKI |
发明人 |
TSUGE OSAMU;TOKUDA KOJI;MIZUTANI NORIAKI |
分类号 |
F27B9/30;C21B11/08;C21B13/10;C22B1/212;F27B9/16;F27D17/00 |
主分类号 |
F27B9/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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