GB1307869A - Process for directly reducing iron oxide-containing materials in a rotary kiln - Google Patents

Process for directly reducing iron oxide-containing materials in a rotary kiln

Info

Publication number
GB1307869A
GB1307869A GB3826270A GB3826270A GB1307869A GB 1307869 A GB1307869 A GB 1307869A GB 3826270 A GB3826270 A GB 3826270A GB 3826270 A GB3826270 A GB 3826270A GB 1307869 A GB1307869 A GB 1307869A
Authority
GB
United Kingdom
Prior art keywords
kiln
iron oxide
charge
coal
rotary kiln
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
GB3826270A
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 GB1307869A publication Critical patent/GB1307869A/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

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)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

1307869 Reducing iron oxide METALLGESELLSCHAFT A G 7 Aug 1970 [21 Aug 1969] 38262/70 Heading C7D Iron oxide is reduced in a rotary kiln provided with shell tubes by treatment with a reducing agent comprising highly reactive coal which disintegrates at the kiln temperature and is distributed over the length of the reduction zone on the surface of the charge bed, co-currently with the flow of kiln gases, below the melting point of the charge. The throughput is adjusted so that the carbon content of the matter discharged from the kiln is below 1À5% w/n based on the charge of iron oxide-containing material. The reducing agent may be brown coal; the ash may be basic, and serve, at least partly, as a desulphurizing agent. Other sulphur-combining materials, such as limestone or dolomite, may be charged or blown into the kiln. Ash may be discharged by entrainment in the exhaust gases. Air may be supplied to each part of the kiln in amount sufficient to produce the reduction heat by combustion of the volatilized constituents of the coal, but not so as to cause oxidation of the iron oxides. Reference has been directed by the Comptroller to Specification 1222123.
GB3826270A 1969-08-21 1970-08-07 Process for directly reducing iron oxide-containing materials in a rotary kiln Expired GB1307869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691942541 DE1942541A1 (en) 1969-08-21 1969-08-21 Process for the direct reduction of materials containing iron oxide in the rotary kiln

Publications (1)

Publication Number Publication Date
GB1307869A true GB1307869A (en) 1973-02-21

Family

ID=5743393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3826270A Expired GB1307869A (en) 1969-08-21 1970-08-07 Process for directly reducing iron oxide-containing materials in a rotary kiln

Country Status (5)

Country Link
DE (1) DE1942541A1 (en)
ES (1) ES380901A1 (en)
GB (1) GB1307869A (en)
NO (1) NO130543B (en)
ZA (1) ZA703903B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181520A (en) 1975-01-14 1980-01-01 Metallgesellschaft Aktiengesellschaft Process for the direct reduction of iron oxide-containing materials in a rotary kiln

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621969A1 (en) * 1976-05-18 1977-12-01 Metallgesellschaft Ag ROLLING PROCESS FOR THE FLUIDIFICATION OF ZINC AND LEAD FROM FERROUS-BASED MATERIALS
DE2905339A1 (en) * 1979-02-13 1980-08-21 Metallgesellschaft Ag METHOD FOR PRODUCING STEEL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181520A (en) 1975-01-14 1980-01-01 Metallgesellschaft Aktiengesellschaft Process for the direct reduction of iron oxide-containing materials in a rotary kiln

Also Published As

Publication number Publication date
NO130543B (en) 1974-09-23
ZA703903B (en) 1971-03-31
ES380901A1 (en) 1972-09-16
DE1942541A1 (en) 1971-03-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee