IRON ORE POWDER REDUCING DEVICE, MOLTEN IRON AND REDUCED IRON PRODUCING DEVICE AND METHOD FOR SAME

WIPO Patent Application WO/2013/100333

A1

Disclosed are an iron ore powder reducing device and reducing method. The iron ore powder reducing device according to the present invention comprises: a coarse ore preliminary reduction furnace into which is charged iron ore powder, and which subjects the iron ore powder to preliminary reduction by means of a reducing gas; an ultrafine ore preliminary reduction furnace into which is charged an ultrafine ore that has been scattered and discharged from the coarse ore preliminary reduction furnace, and which subjects same to preliminary reduction; a first magnetic sorter for separating out the gangue component from the ultrafine ore that has been reduced in and discharged from the ultrafine ore preliminary reduction furnace; at least one interim reduction furnace, for increasing the rate of reduction of the coarse ore and ultrafine ore, into which is charged the coarse ore that has been reduced in and discharged from the coarse ore preliminary reduction furnace and the ultrafine ore that has had the gangue component separated out, and which subjects (subject) same to additional reduction; and a final reduction furnace for producing reduced iron by carrying out a final reduction of the coarse ore and the ultrafine ore that has been reduced in and discharged from the interim reduction furnace(s).

JEONG SUNKWANG (KR)
YI SANG-HO (KR)
YOUN JA-YOUNG (KR)

PCT/KR2012/008244

July 04, 2013

October 11, 2012

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POSCO (KR)

C21B13/00

KR19990053880A	1999-07-15
JPH10506960A	1998-07-07
KR20030017099A	2003-03-03
JP2002363624A	2002-12-18
CN200810042199A	2008-08-28

See also references of EP 2799558A4

YOU ME PATENT AND LAW FIRM (KR)
유미특허법인 (KR)

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