Pohang Iron & Steel Co. Ltd.

Research Institute of Industrial Science & Technology

Voest-alpine Industrieanlagenbau Gmbh

Sang Deok Lee

Werner Leopold Kepplinger

Felix Wallner

Il Ock Lee

Sang Hoon Joo

Young Chae Jung

Yoon Chul Park

An apparatus for manufacturing molten iron by using a calcination furnace, and a manufacturing method therefor are disclosed. A high temperature reducing gas (1000 to 1100&deg; C.) from a melter gasifier is used as a calcination heat in a calcination furnace so as to cool the high temperature reducing gas to the optimum reduction temperature (800 to 850&deg; C.), and so as to supply the cooled reducing gas to a shaft furnace, whereby the manufacture of the molten iron can be efficiently carried out, and a high thermal efficiency is realized even without a separate gas cooling device. Therefore, a separate cooling device for cooling the hot reducing gas of the melter gasifier is not required. Further, the hot reducing gas is naturally cooled at the calcination furnace, and therefore, the thermal efficiency of the hot reducing gas of the melter gasifier is maximized. Further, a separate water-using cooler and a separate compressor are omitted, and therefore, the molten iron manufacturing facility is simplified.

Apparatus for manufacturing molten iron by using calcination furnace, and manufacturing method therefor

Method for injecting fine iron ore in smelting reducing process

Growing community of inventors

Pohang, South Korea

Sang Deok Lee