Kabushiki Kaisha Kobe Seiko Sho

Midrex International, B.v., Rotterdam, Zurich Branch

Kimio Sugiyama

Isao Kobayashi

Shoichi Kikuchi

Shuzo Ito

Osamu Tsuchiya

Akira Uragami

Yoshimichi Takenaka

Takuya Negami

Shinichi Inaba

Toshihide Matsumura

Masataka Shimizu

Kazuo Kunii

Takashi Kujirai

David C Meissner

Shintaro Ano

Isao Kobiyashi

Kenji Ohiraki

A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

Method and apparatus for making metallic iron

Metallic iron containing slag

A method and apparatus for producing direct reduced iron from iron oxide fines. The iron oxide raw material are passed through a pre-heater having a spouted port then to a primary spouted bed circulating fluidizing bed reactor and then to a bubbling fluidizing bed reactor. The reaction of the strong reducing gas mixture, through this series of beds allows intimate contact between the fines and small particles with the reducing gas to facilitate the direct reduction of the iron oxide fines to metallized iron.

Spouted bed circulating fluidized bed direct reduction system and method

Growing community of inventors

Osaka, Japan

Kimio Sugiyama