OPERATION OF PULVERIZED COAL BLOWING IN BLAST FURNACE

PURPOSE:To enable the control of thermal level at quick and good condition as much as possible in the case of blowing pulverized coals in plural coal kinds from a blasting tuyere. CONSTITUTION:In an operational method in a blast furnace for blowing the fine pulverized coal together with hot blast fr...

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Bibliographische Detailangaben
Hauptverfasser:	HISAMUNE NOBUYUKI, MORI KAZUMI, MASAMORI TSUNEJI, KASHIWADA MASAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON
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Beschreibung
Zusammenfassung:	PURPOSE:To enable the control of thermal level at quick and good condition as much as possible in the case of blowing pulverized coals in plural coal kinds from a blasting tuyere. CONSTITUTION:In an operational method in a blast furnace for blowing the fine pulverized coal together with hot blast from the blasting tuyere, beforehand a substitution ratio to a coke ratio caused by the difference of calorific values in each coal is obtd. In the case of using plural coal kinds as the pulverized coal based on the change of the substitution ratio, the blowing quantity of the pulverized coal is changed.