METHOD AND DEVICE FOR PRODUCING REDUCED IRON

WIPO Patent Application WO/2013/118725

A1

The present invention pertains to a method and device for producing reduced iron from iron-making dust comprising iron oxide produced in an iron-making plant, focuses on a rotary kiln reduction method free of the need to pre-treat the dust, and addresses the pursuit of equipment for achieving further enhanced thermal efficiency and stable operation. To achieve the foregoing, the present invention is characterized in that when heating and reducing a carbon-containing molded body in a single enclosed space in which an internally heated rotary kiln and an externally heated rotary kiln are arranged in series and which comprises at least both the rotary kiln interiors, a reduction exhaust gas produced in an externally heated rotary kiln is combusted in the interior of an internally heated rotary kiln.

UEKAWA SEITA (JP)
NABEKURA KAZUNORI (JP)

PCT/JP2013/052615

August 15, 2013

February 05, 2013

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TETSUGEN CORP (JP)

C21B13/08; C22B1/16; C22B1/244; C22B1/248; F27B7/02; F27B7/08; F27B7/10; F27B7/34; F27B7/36

JPH06501055A	1994-01-27
JP2002206120A	2002-07-26
JP2001019505A	2001-01-23
JP2010012409A	2010-01-21
JPS5110166A	1976-01-27
JP2003089823A	2003-03-28
JP2010007163A	2010-01-14

See also references of EP 2813583A4
G. KOSHIHIRA; Y. AMINAGA; Y. KAWAGUCHI; M. YARIYAMA; A. MIYAMOTO, CAMP ISIJ, vol. 10, 1997, pages 36 - 39
NSC TECHNICAL REPORTS, NO. 376, 2002
"Making New Materials From Slag and Dust and New Developments", 5TH NISHIYAMA COMMEMORATIVE COURSE, June 2011 (2011-06-01), pages 94

AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)

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