電気アーク放電炉内における微粒状直接還元鉄の溶解方法

Title:

電気アーク放電炉内における微粒状直接還元鉄の溶解方法

Document Type and Number:

Japanese Patent JP4287044

Kind Code:

B2

Abstract:

The direct reduced iron (DRI) which for at least 80 wt-% has a grain size of not more than 3 mm is melted in an electric arc furnace. The furnace contains a bath of liquid iron. During the operation of the furnace a foamy slag layer is formed on the bath and the DRI falls by gravity through at least one movable lance into the foamy slag layer on the iron bath. Preferably, the distance of the aperture of the lance to the iron bath is kept practically constant.

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Inventors:

Eichberger, Heinz
Shimo, Siegfried
Michael, Strodel
Wells, william

Application Number:

JP2000515036A

Publication Date:

July 01, 2009

Filing Date:

October 02, 1998

Export Citation:

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Assignee:

GAA Group AG

International Classes:

C21B13/12; C21B13/00; C21B13/14; C21C5/52; F27B3/08; F27B3/18

Domestic Patent References:

JP62228413A
JP56013420A
JP52101608A

Attorney, Agent or Firm:

Masaru Tsuchiya

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