GB1104553A - Process for heating previously reduced products - Google Patents

Process for heating previously reduced products

Info

Publication number
GB1104553A
GB1104553A GB7160/66A GB716066A GB1104553A GB 1104553 A GB1104553 A GB 1104553A GB 7160/66 A GB7160/66 A GB 7160/66A GB 716066 A GB716066 A GB 716066A GB 1104553 A GB1104553 A GB 1104553A
Authority
GB
United Kingdom
Prior art keywords
products
gases
stage
burnt
heated
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
GB7160/66A
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of GB1104553A publication Critical patent/GB1104553A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
    • 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
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Gas Separation By Absorption (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

<PICT:1104553/C6-C7/1> Pre-reduced solid iron products, e.g. pellets or powder containing 85 or 95% metallic iron, are heated by hot gases recovered from the conversion refining of pig iron in at least two successive stages during each of which a part of the Co contained in the gases, which are passed counterflow through the products, is burnt by the controlled feed of air without re-oxidizing the products. For example, gases escaping from a steelworks converter 2 may be at a temperature of 1600 DEG C. and contain by volume 15% CO2 and 85% CO, giving a ratio of % CO2: (% CO2 + % CO) of 0.15. The pre-reduced pellets may be heated to 700 DEG C. in the first stage, where the above ratio is 0.4, and to 1130 DEG C. in the second stage, where the above ratio is 0.25, inside a horizontal rotary or shaft furnace heater 1, the gases being burnt in each stage by controlled injection of N2-enriched air.
GB7160/66A 1965-02-23 1966-02-18 Process for heating previously reduced products Expired GB1104553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6670A FR1434287A (en) 1965-02-23 1965-02-23 Heating process for pre-reduced products

Publications (1)

Publication Number Publication Date
GB1104553A true GB1104553A (en) 1968-02-28

Family

ID=8571679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7160/66A Expired GB1104553A (en) 1965-02-23 1966-02-18 Process for heating previously reduced products

Country Status (4)

Country Link
BE (1) BE676208A (en)
ES (1) ES323391A1 (en)
FR (1) FR1434287A (en)
GB (1) GB1104553A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562222B1 (en) * 1984-03-28 1986-08-01 Litchinko Catherine INSTALLATION AND METHOD FOR CONTINUOUSLY LOADING A REACTOR IN SOLID MATERIAL AND HEATING THE SAME WITH THE GAS EMITTED BY THE REACTOR

Also Published As

Publication number Publication date
BE676208A (en) 1966-06-16
ES323391A1 (en) 1967-03-16
FR1434287A (en) 1966-04-08

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