Title:
METHOD OF PRODUCING SINTERED ORE
Document Type and Number:
Japanese Patent JP2016044334
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sintered ore production method that can properly pre-reduce sintered ores without deteriorating the operation of a sintering machine and can produce high-quality pre-reduced sintered ore with high productivity.SOLUTION: High-temperature sintered ores discharged from a sintering machine are charged into a reaction vessel A, and a hydrocarbon and carbon dioxide are blown into the reaction vessel A to produce hydrogen and carbon monoxide by a carbon dioxide reforming reaction of the hydrocarbon. While cooling the sintered ores by the carbon dioxide reforming reaction of the hydrocarbon, the sintered ores are pre-reduced using the produced hydrogen and carbon monoxide as reducing gases. Since the sintered ores are pre-reduced not in the sintering step but in the cooling step, the sintered ores can be pre-reduced without deteriorating the operation of the sintering machine, and since the carbon dioxide reforming reaction of the hydrocarbon is an endothermic reaction, the high-temperature sintered ores can be efficiently cooled.SELECTED DRAWING: Figure 1
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Inventors:
OGAWA NAOTAKA
MURAI RYOTA
MATSUNO EIJU
MURAI RYOTA
MATSUNO EIJU
Application Number:
JP2014169855A
Publication Date:
April 04, 2016
Filing Date:
August 22, 2014
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
C21B13/00; C01B3/38; C22B1/16; C22B1/26; F27D17/00
Domestic Patent References:
| JPS3715210B1 | ||||
| JPH10265858A | 1998-10-06 | |||
| JPS4924804A | 1974-03-05 |
Attorney, Agent or Firm:
Hideto Tomabechi
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