JPS5798615A - Coal fluidized bed type reduced iron making device - Google Patents

Coal fluidized bed type reduced iron making device

Info

Publication number
JPS5798615A
JPS5798615A JP17263980A JP17263980A JPS5798615A JP S5798615 A JPS5798615 A JP S5798615A JP 17263980 A JP17263980 A JP 17263980A JP 17263980 A JP17263980 A JP 17263980A JP S5798615 A JPS5798615 A JP S5798615A
Authority
JP
Japan
Prior art keywords
fluidized bed
reaction furnace
furnace
heating furnace
bed type
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.)
Granted
Application number
JP17263980A
Other languages
Japanese (ja)
Other versions
JPS6338403B2 (en
Inventor
Yukinaga Katahashi
Tetsuo Horie
Kazumi Iwasada
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 JP17263980A priority Critical patent/JPS5798615A/en
Publication of JPS5798615A publication Critical patent/JPS5798615A/en
Publication of JPS6338403B2 publication Critical patent/JPS6338403B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material

Abstract

PURPOSE:To manufacture reduced iron at high thermal efficiency by constituting a reducing device of powdery iron ore utilizing fluidized bed of a fluidized bed type reducing reaction furnace and a combustion heating furnace and installing the both side by side partitioned by a thin wall excellent in thermal conductivity. CONSTITUTION:A fluidized bed type reducing reaction furnace 2 and a fluidized bed type combustion heating furnace 3 are installed side by side partitioned by a thin partition wall 23 made of refractory material having high thermal conductivity such as SiC etc. Powdery iron ore A and powdery coal B are charged in the reaction furnace 2 and reducing waste gas of reaction furnace heated to 850-950 deg.C is blown from gas dispersing plates 21 at the bottom. The iron ore A is reduced in a fluidized bed formed by formation of char from a part of coal and taken out as reduced iron D. Char C thus formed and auxiliary fuel B' are burnt in the heating furnace 3 and the heat is transmitted to the reaction furnace 2 through the partition wall 23 to accelerate reducing reaction of iron ore. The height H1 of the fluidized bed in the reaction furnace 2 and that H2 in the heating furnace are adjusted to make internal pressure nearly equal. Thus, the partition wall 23 is not destroyed even it is made thin, and heat is transmitted from the heating furnace to the reaction furnace at a high transmission rate.
JP17263980A 1980-12-09 1980-12-09 Coal fluidized bed type reduced iron making device Granted JPS5798615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17263980A JPS5798615A (en) 1980-12-09 1980-12-09 Coal fluidized bed type reduced iron making device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17263980A JPS5798615A (en) 1980-12-09 1980-12-09 Coal fluidized bed type reduced iron making device

Publications (2)

Publication Number Publication Date
JPS5798615A true JPS5798615A (en) 1982-06-18
JPS6338403B2 JPS6338403B2 (en) 1988-07-29

Family

ID=15945604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17263980A Granted JPS5798615A (en) 1980-12-09 1980-12-09 Coal fluidized bed type reduced iron making device

Country Status (1)

Country Link
JP (1) JPS5798615A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039503U (en) * 1989-06-09 1991-01-29

Also Published As

Publication number Publication date
JPS6338403B2 (en) 1988-07-29

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