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JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan LtdfiledCriticalNKK Corp
Priority to JP15327679ApriorityCriticalpatent/JPS5677307A/en
Publication of JPS5677307ApublicationCriticalpatent/JPS5677307A/en
PURPOSE: To decrease energy consumption by supplying powdery iron ore and flux to a reduction melting furnace from above and slack or fuel reducing agent fro below, reducing the iron ore by the reducing gas produced by burning these and melt- reducing the same in the slagmelt-reducing bath in the furnace bottom.
CONSTITUTION: Powdery iron ore and flux such as coal are charged from the raw material charging nozzle 2 in the top part of a reduction melting furnace 1, and slack or fuel reducing agent such as heavy gravity oil is blown through the tuyeres 10 or blow nozzles 11 in the lower part and these are burned to produce a reducing gas. This causes the descending iron ore to be heated and reduced by the reducing gas ascending in a fluid state. Thence, it is melt-reduced in the slag melt-reducing bath (a) in the furnace bottom which is being fluidized and agitated by the blast from the tuyeres 10.
COPYRIGHT: (C)1981,JPO&Japio
JP15327679A1979-11-271979-11-27Production of molten iron
PendingJPS5677307A
(en)
Method for carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method