CA1088315A - Shaft-furnace direct-reduction process for producing highly reduced iron-bearing material - Google Patents

Shaft-furnace direct-reduction process for producing highly reduced iron-bearing material

Info

Publication number
CA1088315A
CA1088315A CA248,159A CA248159A CA1088315A CA 1088315 A CA1088315 A CA 1088315A CA 248159 A CA248159 A CA 248159A CA 1088315 A CA1088315 A CA 1088315A
Authority
CA
Canada
Prior art keywords
temperature
reducing gas
gas
furnace
particles
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.)
Expired
Application number
CA248,159A
Other languages
English (en)
French (fr)
Inventor
Stephen Waslo
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Application granted granted Critical
Publication of CA1088315A publication Critical patent/CA1088315A/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
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • 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
    • C21B13/029—Introducing coolant gas in the 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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • 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
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Iron (AREA)
CA248,159A 1975-04-15 1976-03-18 Shaft-furnace direct-reduction process for producing highly reduced iron-bearing material Expired CA1088315A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US56833275A 1975-04-15 1975-04-15
US568,332 1975-04-15
US05/644,249 US4017305A (en) 1975-04-15 1975-12-24 Process for heat hardening
US644,249 1984-08-27

Publications (1)

Publication Number Publication Date
CA1088315A true CA1088315A (en) 1980-10-28

Family

ID=27074751

Family Applications (1)

Application Number Title Priority Date Filing Date
CA248,159A Expired CA1088315A (en) 1975-04-15 1976-03-18 Shaft-furnace direct-reduction process for producing highly reduced iron-bearing material

Country Status (7)

Country Link
US (1) US4017305A (enExample)
AU (1) AU504493B2 (enExample)
BR (1) BR7602248A (enExample)
CA (1) CA1088315A (enExample)
DE (1) DE2616468A1 (enExample)
GB (1) GB1548240A (enExample)
NO (1) NO143994C (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201571A (en) * 1978-08-15 1980-05-06 Midrex Corporation Method for the direct reduction of iron and production of fuel gas using gas from coal
JPS55113819A (en) * 1979-02-26 1980-09-02 Kawasaki Heavy Ind Ltd Method and apparatus for direct reduction iron making
US4216011A (en) * 1979-04-23 1980-08-05 Hylsa, S.A. Method and apparatus for the secondary gaseous reduction of metal ores
US4331470A (en) * 1980-09-15 1982-05-25 Midrex Corporation Method for the direct reduction of iron in a shaft furnace using gas from coal
US4365789A (en) * 1980-09-15 1982-12-28 Midrex Corporation Apparatus for the direct reduction of iron in a shaft furnace using gas from coal
CN111961784B (zh) * 2020-08-31 2021-09-07 山东大学 一种铁矿粉鼓泡床还原反应的方法与系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160498A (en) * 1960-06-29 1964-12-08 Armco Steel Corp Fluidized iron ore reduction process and apparatus
US3850616A (en) * 1973-10-29 1974-11-26 Armco Steel Corp Inert gas seal for product discharge from a shaft furnace

Also Published As

Publication number Publication date
GB1548240A (en) 1979-07-04
DE2616468A1 (de) 1976-11-04
US4017305A (en) 1977-04-12
AU1228576A (en) 1977-09-29
AU504493B2 (en) 1979-10-18
NO143994C (no) 1981-05-27
BR7602248A (pt) 1976-10-12
NO761312L (enExample) 1976-10-18
NO143994B (no) 1981-02-16

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Legal Events

Date Code Title Description
MKEX Expiry