GB1532969A - Process for the direct reduction of iron oxide-containing materials in a rotary kiln - Google Patents

Process for the direct reduction of iron oxide-containing materials in a rotary kiln

Info

Publication number
GB1532969A
GB1532969A GB50712/75A GB5071275A GB1532969A GB 1532969 A GB1532969 A GB 1532969A GB 50712/75 A GB50712/75 A GB 50712/75A GB 5071275 A GB5071275 A GB 5071275A GB 1532969 A GB1532969 A GB 1532969A
Authority
GB
United Kingdom
Prior art keywords
kiln
iron oxide
charged
reducing agent
reduction zone
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
GB50712/75A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB1532969A publication Critical patent/GB1532969A/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
    • C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary 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
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • 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 And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

1532969 Direct reduction of iron oxide METALLGESELLSCHAFT AG 10 Dec 1975 [14 Jan 1975] 50712/75 Heading C7D Sponge iron is produced from iron oxide-containing material in a rotary kiln by charging to the kiln an agglomerated carbonaceous reducing agent containing 20-50% volatile constituents which is heated at such a rate that disintegration occurs prior to entry to the reduction zone of the kiln. Preferred reducing agents having 20-50% volutiles are brown coal and sub-bituminous coal which are charged preferably as pellets or briquettes of 1-7 cm. O 2 -containing gas, e.g. air is charged to the kiln by tubes in the shell or as a jet from the discharge end. There is preferably a reducing flame at the final portion of the reduction zone from a burner supplied with oil or gas and insufficient air. Some of the reducing agent may be blown in at the discharge end, and additionally at a low reactivity solid carbonaceous reducing agent may be charged. The temperature in the reduction zone is 900-950‹C.
GB50712/75A 1975-01-14 1975-12-10 Process for the direct reduction of iron oxide-containing materials in a rotary kiln Expired GB1532969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752501182 DE2501182A1 (en) 1975-01-14 1975-01-14 PROCESS FOR THE DIRECT REDUCTION OF FERROUS OXYDE-CONTAINING MATERIALS IN THE ROTARY FURNACE

Publications (1)

Publication Number Publication Date
GB1532969A true GB1532969A (en) 1978-11-22

Family

ID=5936385

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50712/75A Expired GB1532969A (en) 1975-01-14 1975-12-10 Process for the direct reduction of iron oxide-containing materials in a rotary kiln

Country Status (9)

Country Link
AU (1) AU498225B2 (en)
BR (1) BR7508574A (en)
CA (1) CA1069313A (en)
DE (1) DE2501182A1 (en)
GB (1) GB1532969A (en)
IN (1) IN143905B (en)
IT (1) IT1054732B (en)
NL (1) NL7513171A (en)
TR (1) TR18932A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653512C2 (en) * 1976-11-25 1983-10-06 Metallgesellschaft Ag, 6000 Frankfurt Process for the direct reduction of oxidic ferrous materials
DE2719422C2 (en) * 1977-04-30 1982-04-29 Metallgesellschaft Ag, 6000 Frankfurt Process for the direct reduction of materials containing iron oxides to sponge iron in a rotary kiln
DE2835866A1 (en) * 1978-08-16 1980-02-28 Metallgesellschaft Ag METHOD FOR DIRECTLY REDUCING MATERIALS CONTAINING IRON OXIDE
DE3509505A1 (en) * 1985-03-16 1986-09-18 Metallgesellschaft Ag, 6000 Frankfurt Process for the direct reduction of iron oxide-containing materials in a rotary kiln

Also Published As

Publication number Publication date
IT1054732B (en) 1981-11-30
DE2501182A1 (en) 1976-07-15
IN143905B (en) 1978-02-25
NL7513171A (en) 1976-07-16
BR7508574A (en) 1976-08-24
TR18932A (en) 1977-12-20
AU498225B2 (en) 1979-02-22
AU8678475A (en) 1977-05-26
CA1069313A (en) 1980-01-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee