JPS5641306A - Iron making method by direct reduction of iron oxide - Google Patents

Iron making method by direct reduction of iron oxide

Info

Publication number
JPS5641306A
JPS5641306A JP11680180A JP11680180A JPS5641306A JP S5641306 A JPS5641306 A JP S5641306A JP 11680180 A JP11680180 A JP 11680180A JP 11680180 A JP11680180 A JP 11680180A JP S5641306 A JPS5641306 A JP S5641306A
Authority
JP
Japan
Prior art keywords
gas
furnace
mixed
reformed
reforming
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
JP11680180A
Other languages
Japanese (ja)
Other versions
JPS602362B2 (en
Inventor
Mamoru Aoki
Masahiro Tomita
Hiroshi Utsunomiya
Hironobu Sako
Dentaro Kaneko
Katsunori Shimazaki
Yoshitomo Ishii
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 JP55116801A priority Critical patent/JPS602362B2/en
Priority to AR282462A priority patent/AR222720A1/en
Publication of JPS5641306A publication Critical patent/JPS5641306A/en
Publication of JPS602362B2 publication Critical patent/JPS602362B2/en
Expired 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
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To prevent the deposition of solid carbon during reforming reaction, and to utilize the sensible heat of high temp. reformed gas effectively in the reforming of CH4 in order to manufacture reducing gas for making iron by direct reduction, by using a portion of CH4 together with exhaust gas of the reducing furnace. CONSTITUTION:Natural gas contg. principally CH4 is reformed to product reducing gas composed of CO and H2 and is introduced into a vertical reduction furnace 1 for reducing iron ore in solid phase. The high temp. exhaust gas (a) discharged from the reduction furnace 1 is removed from dust and moisture by a scrubber 4. Then the gas is divided into two portions, one of which is used as fuel for the reforming furnace 2 and a heating furnace 3, the other portion (b') is mixed with a portion (c) of the natural gas 5 to form a mixed gas (d) and is charged to the reforming furnace 2. The high temp. reformed gas (e) is mixed with natural gas (g) having been heated in the heating furnace 3, thereby the partial pressure of CH4 of the mixed gas is decreased, and CH4 is reformed by an after reactor 6 with its own retained heat while restraining the deposition of solid carbon. At the same time, the mixed gas is maintained at a suitable temp. for reduction furnace by controlling the temp. through cooling with endothermic reaction, and is charged to the vertical reduction furnace 1.
JP55116801A 1980-08-25 1980-08-25 Iron oxide direct reduction method Expired JPS602362B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55116801A JPS602362B2 (en) 1980-08-25 1980-08-25 Iron oxide direct reduction method
AR282462A AR222720A1 (en) 1980-08-25 1980-09-09 DIRECT REDUCTION PROCEDURE TO PRODUCE METAL IRON

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55116801A JPS602362B2 (en) 1980-08-25 1980-08-25 Iron oxide direct reduction method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP54116381 Division

Publications (2)

Publication Number Publication Date
JPS5641306A true JPS5641306A (en) 1981-04-18
JPS602362B2 JPS602362B2 (en) 1985-01-21

Family

ID=14695997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55116801A Expired JPS602362B2 (en) 1980-08-25 1980-08-25 Iron oxide direct reduction method

Country Status (2)

Country Link
JP (1) JPS602362B2 (en)
AR (1) AR222720A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467884A1 (en) * 1979-10-22 1981-04-30 Midrex Corp PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON OXIDE IN METAL IRON USING A GAS WITH HIGH SULFUR CONTENT
JPS5767108A (en) * 1980-10-13 1982-04-23 Hitachi Metals Ltd Method and device for controlling temperature of circulating reducing gas in sponge iron producing apparatus
CN100451133C (en) * 2005-09-15 2009-01-14 中冶东方工程技术有限公司 Method and equipment for producing direct reduced iron using coke oven gas
CN106834579A (en) * 2017-03-03 2017-06-13 江苏省冶金设计院有限公司 The system and method that a kind of natural gas tri-reforming prepares DRI

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11100349B2 (en) 2018-09-28 2021-08-24 Apple Inc. Audio assisted enrollment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467884A1 (en) * 1979-10-22 1981-04-30 Midrex Corp PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON OXIDE IN METAL IRON USING A GAS WITH HIGH SULFUR CONTENT
JPS5767108A (en) * 1980-10-13 1982-04-23 Hitachi Metals Ltd Method and device for controlling temperature of circulating reducing gas in sponge iron producing apparatus
CN100451133C (en) * 2005-09-15 2009-01-14 中冶东方工程技术有限公司 Method and equipment for producing direct reduced iron using coke oven gas
CN106834579A (en) * 2017-03-03 2017-06-13 江苏省冶金设计院有限公司 The system and method that a kind of natural gas tri-reforming prepares DRI

Also Published As

Publication number Publication date
JPS602362B2 (en) 1985-01-21
AR222720A1 (en) 1981-06-15

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