GB1049921A - A method of preventing pellet abrasion during the reduction of iron ore - Google Patents

A method of preventing pellet abrasion during the reduction of iron ore

Info

Publication number
GB1049921A
GB1049921A GB129864A GB129864A GB1049921A GB 1049921 A GB1049921 A GB 1049921A GB 129864 A GB129864 A GB 129864A GB 129864 A GB129864 A GB 129864A GB 1049921 A GB1049921 A GB 1049921A
Authority
GB
United Kingdom
Prior art keywords
dust
pellets
additive
furnace
iron ore
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
GB129864A
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 GB1049921A publication Critical patent/GB1049921A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • 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
    • 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
    • Y02P10/20—Recycling

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)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

To increase the mechanical strength and abrasion resistance of green pellets of iron ore, roasting residues or the like which are to be reduced in a rotary furnace, dust formed in the rotary furnace is collected and applied to the surface of the pellets. Bentonite, hydrated lime or calcium chloride is added, as the active ingredient, to the dust initially formed; thereafter the dust may contain sufficient additive. The amount of dust applied is such that the total content of additive in the pellets is no more than 2.5%, instead of about 5% in known processes wherein the additive is distributed throughout the pellets. When the additive is hydrated lime, this is converted to calcium carbonate by carbon dioxide contained in the furnace gases, and the dust is calcined and slaked before re-use. The treatment may take place in the rotary furnace, or in a preceding apparatus, e.g. a shaft furnace. The method is applicable in the process of Specification 1,007,293, wherein the green pellets incorporate a fuel containing volatile constituents, particularly a fuel with a low ash fusing point.
GB129864A 1963-01-11 1964-01-10 A method of preventing pellet abrasion during the reduction of iron ore Expired GB1049921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM55393A DE1186089B (en) 1963-01-11 1963-01-11 Process for preventing the abrasion of pellets for iron ore reduction

Publications (1)

Publication Number Publication Date
GB1049921A true GB1049921A (en) 1966-11-30

Family

ID=7308291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB129864A Expired GB1049921A (en) 1963-01-11 1964-01-10 A method of preventing pellet abrasion during the reduction of iron ore

Country Status (2)

Country Link
DE (1) DE1186089B (en)
GB (1) GB1049921A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS627806A (en) * 1985-07-02 1987-01-14 Kobe Steel Ltd Direct steel making method using vertical furnace

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070386B (en) * 1959-12-03 Oslo Öle Rolfsen Method and device for the production of spherical particles from fine-grained ores and minerals
US2869850A (en) * 1954-03-17 1959-01-20 Union Carbide Corp Preparation of ore and method of heat treatment

Also Published As

Publication number Publication date
DE1186089B (en) 1965-01-28

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