JPS5472707A - Direct reduction method for iron oxide - Google Patents

Direct reduction method for iron oxide

Info

Publication number
JPS5472707A
JPS5472707A JP14015977A JP14015977A JPS5472707A JP S5472707 A JPS5472707 A JP S5472707A JP 14015977 A JP14015977 A JP 14015977A JP 14015977 A JP14015977 A JP 14015977A JP S5472707 A JPS5472707 A JP S5472707A
Authority
JP
Japan
Prior art keywords
kiln
iron oxide
exhaust gas
raw material
powder
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
JP14015977A
Other languages
Japanese (ja)
Inventor
Tetsuo Horie
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 JP14015977A priority Critical patent/JPS5472707A/en
Publication of JPS5472707A publication Critical patent/JPS5472707A/en
Pending legal-status Critical Current

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  • Manufacture Of Iron (AREA)

Abstract

PURPOSE: To surely reduce iron oxide raw material in two steps with good efficiency by organically combining a fluidized bed system reducing process with a rotary kiln system reducing process.
CONSTITUTION: Preheated air C, iron oxide raw material A, carbonaceous powder B are introduced into fluidized furnace 1 to form fluidized bed D. A predetermined voltage is applied between electrodes 8, 8 to generate Joule heat in powder B such as coal powder, whereby a CO reducing atmosphere is formed in bed D to reduce raw material A. CO-contg. exhaust gas D is then introduced from exhaust gas outlet 12 into rotary kiln 13 to keep the inside of kiln 13 under a reducing atmosphere, reduced product E and carbonaceous substance F are supplied from furnace 1 to kiln 13, and necessary air, etc. are fed from feed pipe 19 to surely reduce product E to metallic iron. Part of exhaust gas of kiln 13 is introduced into preheater 5 for air, etc. and the remainder is introduced into kiln 13 again.
COPYRIGHT: (C)1979,JPO&Japio
JP14015977A 1977-11-22 1977-11-22 Direct reduction method for iron oxide Pending JPS5472707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14015977A JPS5472707A (en) 1977-11-22 1977-11-22 Direct reduction method for iron oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14015977A JPS5472707A (en) 1977-11-22 1977-11-22 Direct reduction method for iron oxide

Publications (1)

Publication Number Publication Date
JPS5472707A true JPS5472707A (en) 1979-06-11

Family

ID=15262232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14015977A Pending JPS5472707A (en) 1977-11-22 1977-11-22 Direct reduction method for iron oxide

Country Status (1)

Country Link
JP (1) JPS5472707A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864658A1 (en) * 1997-03-13 1998-09-16 The Boc Group, Inc. Refining iron ore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864658A1 (en) * 1997-03-13 1998-09-16 The Boc Group, Inc. Refining iron ore

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