Method for producing metallic iron

Details Method for producing metallic iron Method for producing metallic iron

2008-06-10

2008-06-10

King, Roy (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C075S503000

Reexamination Certificate

active

07384450

ABSTRACT:
In a method of producing metallic iron by reducing and melting a raw material, which contains an iron oxide-containing material and a carbonaceous reducing agent, by heating, the raw material for producing metallic iron is supplied after a powder and granular atmosphere control carbonaceous material is spread on a hearth of a heat-reducing furnace. In this case, a non-resolidificable carbonaceous material is used as the atmosphere control carbonaceous material, and thus a phenomenon that the powder and granular carbonaceous material is resolidified into a rice-cracker-like shape can be suppressed, thereby permitting solid-phase reduction with high efficiency and stable operationality.

REFERENCES:
patent: 3333951 (1967-08-01), Ban
patent: 4341598 (1982-07-01), Green
patent: 5186741 (1993-02-01), Kotraba et al.
patent: 5575824 (1996-11-01), Brown et al.
patent: 5989019 (1999-11-01), Nishimura et al.
patent: 6063156 (2000-05-01), Negami et al.
patent: 6126718 (2000-10-01), Sawa et al.
patent: 6129777 (2000-10-01), Fuji et al.
patent: 6149709 (2000-11-01), Uragami et al.
patent: 6152983 (2000-11-01), Kamijo et al.
patent: 6241803 (2001-06-01), Fuji
patent: 6251161 (2001-06-01), Tateishi et al.
patent: 6254665 (2001-07-01), Matsushita et al.
patent: 6258149 (2001-07-01), Sugiyama et al.
patent: 6270552 (2001-08-01), Takeda et al.
patent: 6296479 (2001-10-01), Nishimura et al.
patent: 6302938 (2001-10-01), Kamijo et al.
patent: 6319302 (2001-11-01), Harada
patent: 6334883 (2002-01-01), Takenaka et al.
patent: 6368379 (2002-04-01), Tateishi et al.
patent: 6413295 (2002-07-01), Meissner et al.
patent: 6500381 (2002-12-01), Harada
patent: 6503289 (2003-01-01), Tanigaki et al.
patent: 6511316 (2003-01-01), Harada et al.
patent: 6517770 (2003-02-01), Tateishi et al.
patent: 6521171 (2003-02-01), Tateishi et al.
patent: 6569223 (2003-05-01), Tanigaki et al.
patent: 6579505 (2003-06-01), Tsuchiya et al.
patent: 6585800 (2003-07-01), Sugitatsu et al.
patent: 6592647 (2003-07-01), Hino et al.
patent: 6592649 (2003-07-01), Kikuchi et al.
patent: 6602320 (2003-08-01), Fuji et al.
patent: 6630010 (2003-10-01), Ito et al.
patent: 6648942 (2003-11-01), Hoffman et al.
patent: 6660221 (2003-12-01), Urabe et al.
patent: 6669470 (2003-12-01), Atsushi et al.
patent: 6669756 (2003-12-01), Urabe et al.
patent: 6685466 (2004-02-01), Harada et al.
patent: 6689182 (2004-02-01), Tokuda et al.
patent: 2004/0083853 (2004-05-01), Sugitatsu et al.
patent: 11-335712 (1999-12-01), None
patent: 2000-45008 (2000-02-01), None
patent: 2000-109912 (2000-04-01), None
patent: 2002-302710 (2002-10-01), None
patent: 99/16913 (1999-04-01), None
patent: 00/29628 (2000-05-01), None
The Making Shaping and Treating of Steel, United States Steel, 10th edition, 1985, p. 143.
Webster's Third New International Dictionary of the English Language, Unabridged, 1981, p. 877.
Perry's Chemical Engineers' Handbook, Seventh Edition, 1997, p. 27-4.
Webster's Third New International Dictionary of the English Language, Merriam-Webster Inc., 1981, pp. 1538 and 1933.
Metals Handbook, Desk Edition, 2ndEdition, ASM International, 1998, pp. 41 and 49.
Degel, Rolf et al. “A new generation of rotary hearth furnace technology for coal based DRI production”, Stahl und Eisen, Verlag Stahleisen GMBH, vol. 120, No. 2, pp. 33-40, XP000933033, ISSN: 0340-4803, 2000.

Affiliated with

Also associated with

Rating

Method for producing metallic iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing metallic iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing metallic iron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2804936