Title:
METHOD FOR PRODUCING HOT METAL
Document Type and Number:
WIPO Patent Application WO/2023/171467
Kind Code:
A1
Abstract:
The present invention provides a method for producing a hot metal, the method being capable of producing a hot metal by charging a recovered C source, as a carbonaceous material-containing agglomerated ore, through the throat of a shaft furnace, while circulating a C source in a process. The present invention provides a method for producing a hot metal, the method comprising: a first step in which a carbonaceous material-containing agglomerated ore is produced from an iron-containing starting material and a carbon-containing starting material; a second step in which a hot metal is produced by reducing and melting the carbonaceous material-containing agglomerated ore by blowing an oxygen-containing gas thereinto; and a third step in which carbon is recovered by bringing a carbon-containing gas, which is generated as a by-product by the reduction and contains carbon monoxide and carbon dioxide, into contact with a porous material. With respect to this method for producing a hot metal, the carbon recovered in the third step is used as a part or the entirety of the carbon-containing starting material in the first step. Instead of the second step, this method for producing a hot metal may have: a reduction step in which reduced iron is obtained by heating the carbonaceous material-containing agglomerated ore to 1160-1450°C for reducing and melting the carbonaceous material-containing agglomerated ore, and subsequently cooling the carbonaceous material-containing agglomerated ore; and a melting step in which a hot metal is produced by melting the reduced iron.
Inventors:
IWAMI YUJI (JP)
HIGUCHI TAKAHIDE (JP)
MURAKAMI TAICHI (JP)
HIGUCHI TAKAHIDE (JP)
MURAKAMI TAICHI (JP)
Application Number:
PCT/JP2023/007389
Publication Date:
September 14, 2023
Filing Date:
February 28, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/06; C21B7/00; C22B1/02; C22B1/14; C22B1/16
Foreign References:
| JP2012067332A | 2012-04-05 | |||
| JP2007211296A | 2007-08-23 | |||
| JP2012036029A | 2012-02-23 |
Other References:
KASHIWAYA YOSHIAKI, KUNIYOSHI ISHII: "Morphology of Carbon Deposited from Carbon Monoxide and Mechanism of Formation of Carbon Fiber", JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 52, no. 11, 1 January 1988 (1988-01-01), pages 1103 - 1112, XP093090879, DOI: 10.2320/jinstmet1952.52.11_1103
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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