Method for smelting reduction of iron ore and apparatus therefor

Details Method for smelting reduction of iron ore and apparatus therefor Method for smelting reduction of iron ore and apparatus therefor

1990-05-08

1991-11-19

Kastler, S.

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By means recycling exhaust gas

266217, 266265, C21C 538

Patent

active

050659855

ABSTRACT:
An apparatus for a smelting reduction of iron ore comprising a preheat and prereduction furnace which preheats and prereduces iron ore, a smelting reduction furance into which said preheated and prereduced iron ore, carbonaceous material and fluxes are charged and in which said preheated and prereduced iron ore are smelted and reduced, a top blow oxygen lance having decarburizing nozzles and post-combustion nozzles and blowing oxygen into said smelting reduction furance, and at least one side tuyere placed at a side wall of the smelting reduction furnace and at least one bottom tuyere placed at a bottom of the smelting reduction furnace through which a stirring gas is respectively blown so that at least a part of said stirring gas introduced through said at least one side tuyere hits a swollen portion of the molten metal by said stirring gas introduced through said at least one bottom tuyere.

REFERENCES:
patent: 4504311 (1985-03-01), Weiner
patent: 4889323 (1989-12-01), Pasch et al.
patent: 4936908 (1990-06-01), Takahashi et al.
patent: 4995906 (1991-02-01), Iwasaki et al.

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