Nkk Corporation

Takanori Inoguchi

Masahiro Matsuura

Tatsuro Ariyama

Hidetoshi Noda

Noboru Sakamoto

Tsutomu Shikada

Ryota Murai

Takashi Sumigama

Takeshi Konishi

Scrap melting process

Provided herein is a scrap melting method capable of both producing a molten iron by efficiently melting scrap and producing a large amount of high calorie exhaust gas having a high utility value as a fuel gas and at the same time capable of performing such operation at a low production cost. Scrap, the source of iron, and coke are charged into a shaft furnace and pulverized coal and oxygen are injected into the furnace from a burner provided at the tuyere portion; in such injection of the pulverized coal and oxygen, the pulverized coal is injected from the center or in the vicinity thereof in diametrical direction of the burner and the oxygen is injected from the surrounding portion thereof to mix the two, thereby rapidly burning the pulverized coal in a combustion zone formed beyond the tuyere; and the scrap is melted by the sensible heat of thus generated combustion gas to produce a molten iron and the combustion gas is collected as a fuel gas without causing a significant post combustion of the combustion gas.

Scrap melting method

Growing community of inventors

Tokyo, Japan

Takanori Inoguchi