JPS5550411A - Direct iron manufacturing method - Google Patents

Direct iron manufacturing method

Info

Publication number
JPS5550411A
JPS5550411A JP12170278A JP12170278A JPS5550411A JP S5550411 A JPS5550411 A JP S5550411A JP 12170278 A JP12170278 A JP 12170278A JP 12170278 A JP12170278 A JP 12170278A JP S5550411 A JPS5550411 A JP S5550411A
Authority
JP
Japan
Prior art keywords
bed
ore
reduced
reducing
powdered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12170278A
Other languages
Japanese (ja)
Inventor
Tetsuo Horie
Yukinaga Katahashi
Makoto Shimizu
Kazuyuki Ishino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP12170278A priority Critical patent/JPS5550411A/en
Publication of JPS5550411A publication Critical patent/JPS5550411A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture a good reduced iron economically, by reducing iron ore preliminary charging powdered iron ore and carbonaceous material in fluidized bed and reducing to reduced iron in the next fluidized bed and also, reducing CO2 generated at the time of manufacturing the reduced iron to CO by powdered cabonaceous material and using circulating the above CO.
CONSTITUTION: The powdered iron ore 3 and the powdered carbonaceous material 4, are introduced in the fluidized bed 1 in the upper part of the reaction vessel. High temperature reducing gas containing CO, is risen from the lower moving bed 2 and both powders of the ore and carbonaceous material, are dropped down fluidizing in the bed 1. On this occasion, the ore is reduced by reducing gas preliminary and also, a part of the carbonaceous material is floated in the bed 1. Preliminary reduced ore is reduced by high temperature reducing gas jetting from the nozzle 11 in the bed 2 having the sectional area more than twice of the bed 1 and a good reduced iron is made. CO2 gas generated at that time, is reduced to CO by the powdered carbonaceous material and high temperature and high pressure CO gas is jetted from the nozzle 11 of the bed 2 through the duct 7 after reducing the ore in the bed 1 preliminary.
COPYRIGHT: (C)1980,JPO&Japio
JP12170278A 1978-10-03 1978-10-03 Direct iron manufacturing method Pending JPS5550411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12170278A JPS5550411A (en) 1978-10-03 1978-10-03 Direct iron manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12170278A JPS5550411A (en) 1978-10-03 1978-10-03 Direct iron manufacturing method

Publications (1)

Publication Number Publication Date
JPS5550411A true JPS5550411A (en) 1980-04-12

Family

ID=14817755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12170278A Pending JPS5550411A (en) 1978-10-03 1978-10-03 Direct iron manufacturing method

Country Status (1)

Country Link
JP (1) JPS5550411A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140019A (en) * 1986-12-03 1988-06-11 Nippon Steel Corp Fluidized bed reduction device for iron ore
WO2001031069A1 (en) * 1999-10-28 2001-05-03 Voest-Alpine Industrieanlagenbau Gmbh Method for direct reduction of materials containing iron oxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140019A (en) * 1986-12-03 1988-06-11 Nippon Steel Corp Fluidized bed reduction device for iron ore
WO2001031069A1 (en) * 1999-10-28 2001-05-03 Voest-Alpine Industrieanlagenbau Gmbh Method for direct reduction of materials containing iron oxide

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