Title:
【発明の名称】溶融銑鉄または液状鋼前生成物の製造方法
Document Type and Number:
Japanese Patent JP2000508717
Kind Code:
A
Abstract:
In a method of producing liquid pig iron or liquid steel pre-products from iron-oxide-containing material, fine-particulate iron-oxide-containing material is reduced to fine-particulate sponge iron by the fluidized bed method by passing a reducing gas through at least one fluidized bed reduction stage (7, 8), and lumpy ore is reduced to lumpy sponge iron in a fixed bed reduction stage (28). The sponge iron is charged into a melting-gasifying zone (11) and is molten there under a supply of carbon carriers and oxygen-containing gas, in which a CO- and H2-containing reducing gas is generated for reducing the iron-oxide-containing material. To avoid treating the fine-particulate sponge iron separately from the lumpy sponge iron, the fine-particulate sponge is charged directly to the melting-gasifying zone (11) in an untreated condition and in fine-particulate form, and there, is melted together with the lumpy sponge iron.
Inventors:
Wiesinger, Horst
Application Number:
JP53339798A
Publication Date:
July 11, 2000
Filing Date:
February 10, 1998
Export Citation:
Assignee:
Voest-Arpine Industrie Ann Lagenbau Gamebehr
International Classes:
C21B13/14; C21B13/02; (IPC1-7): C21B13/14; C21B13/02
Attorney, Agent or Firm:
Masatake Shiga (1 person outside)