OPERATING METHOD FOR SINTERING LOW IN NOX

PURPOSE:To reduce NOx amount in waste gas of a sintered ore producing part without deteriorating the reducing and powdering characteristics at low temp. by regulating the particle size of anthracite utilized for a raw material to be sintered within the specified range. CONSTITUTION:Sintering operati...

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Hauptverfasser: ONOUCHI TAKEO, UNETANI TSUNESABURO, KAWAMOTO TOSHIAKI, KANEHARA HAJIME, TARUMOTO SHIRO, ONO MISAO
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To reduce NOx amount in waste gas of a sintered ore producing part without deteriorating the reducing and powdering characteristics at low temp. by regulating the particle size of anthracite utilized for a raw material to be sintered within the specified range. CONSTITUTION:Sintering operation is performed by blending anthracite of low-nitrogen fuel with iron ore. In this case, the constitution of particle size of anthracite is regulated so that the amount of powdery particle not larger that 250mum is not more than 35%. Thereby sintering operation wherein NOx discharged from a sintering process is made a little can be effectively performed without deteriorating the reducing and powdering characteristics at low temp.