JPS54102216A - Treating method for reduced iron - Google Patents

Treating method for reduced iron

Info

Publication number
JPS54102216A
JPS54102216A JP970278A JP970278A JPS54102216A JP S54102216 A JPS54102216 A JP S54102216A JP 970278 A JP970278 A JP 970278A JP 970278 A JP970278 A JP 970278A JP S54102216 A JPS54102216 A JP S54102216A
Authority
JP
Japan
Prior art keywords
iron
reduced iron
gas
raise
density
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
JP970278A
Other languages
Japanese (ja)
Other versions
JPS5847448B2 (en
Inventor
Dentaro Kaneko
Yoshio Kimura
Takehiko Ashinaga
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP53009702A priority Critical patent/JPS5847448B2/en
Publication of JPS54102216A publication Critical patent/JPS54102216A/en
Publication of JPS5847448B2 publication Critical patent/JPS5847448B2/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Landscapes

  • Manufacture Of Iron (AREA)

Abstract

PURPOSE: To enhance the oxidation resistance of reduced iron as well as to raise the density by treating the iron with hot gas having suitable oxidizing power.
CONSTITUTION: Reduced iron obtd. by solid phase reduction of iron ore is charged into a furnace such as rotary kiln and countercurrently contacted to gas of above 1200°C having suitable oxidizing power. The gas consists of CO2; 25%, H2O; about 5%, and the balance inert gas such as N2 or Ar. Thus, the surface particles of the reduced iron are partially melted to clog many fine voids, and the whole reduced iron is shrinked to raise the density. At the same time, a very dense Fe3O4 thin film is formed on the surface of the iron to terminate oxidation. Accordingly, the iron does not undergo reoxidation during storage and transporation, resulting in reduced iron of stable quality.
COPYRIGHT: (C)1979,JPO&Japio
JP53009702A 1978-01-30 1978-01-30 How to process reduced iron Expired JPS5847448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53009702A JPS5847448B2 (en) 1978-01-30 1978-01-30 How to process reduced iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53009702A JPS5847448B2 (en) 1978-01-30 1978-01-30 How to process reduced iron

Publications (2)

Publication Number Publication Date
JPS54102216A true JPS54102216A (en) 1979-08-11
JPS5847448B2 JPS5847448B2 (en) 1983-10-22

Family

ID=11727556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53009702A Expired JPS5847448B2 (en) 1978-01-30 1978-01-30 How to process reduced iron

Country Status (1)

Country Link
JP (1) JPS5847448B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263654A (en) * 1984-06-11 1985-12-27 Hitachi Seiko Ltd Punching device of pallet conveyed printed circuit board
JPH0265895A (en) * 1988-08-31 1990-03-06 Brother Ind Ltd Sewing apparatus provided with identification function
JPH0426453A (en) * 1990-05-22 1992-01-29 Morimoto Mfg Co Ltd Sewing system

Also Published As

Publication number Publication date
JPS5847448B2 (en) 1983-10-22

Similar Documents

Publication Publication Date Title
JPS54102216A (en) Treating method for reduced iron
JPS5789401A (en) Preparation of acicular magnetic metallic particle
JPS5562105A (en) Production of magnetic alloy powder
JPS5333902A (en) Sintering operation method with low nox
JPS53144412A (en) Method of producing sintered ore
JPS5288201A (en) Treatment of slag from steel manufacture
JPS5220909A (en) Composition of carbon containing metal oxide and iron-base alloy
JPS5252819A (en) Manufacturing method of fe-cr alloy
JPS523511A (en) Raw mtrial charging apparatus for high pressure shft reducing furnaces
JPS5212498A (en) Magnetic alloy
JPS5233096A (en) Semi solid magnetic material
JPS5218403A (en) Process for production of non-fired lump ores
JPS53115697A (en) Method for producing ferromagnetic iron oxide powder
JPS5377339A (en) Controlling method for nitrogenous oxide among burning gas
JPS55167139A (en) Manufacture of oxide magnetic thin film
JPS5215351A (en) Method to measure thickness of heaped layer of charge in reduction melting furnace
JPS579838A (en) Manufacture of sintered ore with high reducibility
JPS51147401A (en) A process for production of non-sintered agglomerated ores
JPS51120905A (en) Waste gas circulation type sintering method
JPS52141402A (en) Sintering fuel addition for sintering raw material
Shkol'nikov et al. Indurating Nonoxidizing Roasting of Iron-Ore Pellets From Magnetite Concentrate on a Pilot Apparatus
JPS5210897A (en) Process for production of ferromagnetic iron oxide powder
JPS51112705A (en) Method of preventing cracking of iron shell in a blast furnace
JPS51123232A (en) A process for preparing powder coating compound
JPS53120616A (en) Direct reduction method for iron oxide