GB1033149A - Method of forming heat hardened aggregates of iron ores and iron ore concentrates - Google Patents

Method of forming heat hardened aggregates of iron ores and iron ore concentrates

Info

Publication number
GB1033149A
GB1033149A GB4890962A GB4890962A GB1033149A GB 1033149 A GB1033149 A GB 1033149A GB 4890962 A GB4890962 A GB 4890962A GB 4890962 A GB4890962 A GB 4890962A GB 1033149 A GB1033149 A GB 1033149A
Authority
GB
United Kingdom
Prior art keywords
fines
layer
iron ore
briquettes
downdraught
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
GB4890962A
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.)
Dravo Corp
Original Assignee
Dravo Corp
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 Dravo Corp filed Critical Dravo Corp
Publication of GB1033149A publication Critical patent/GB1033149A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A method for agglomerating earthy iron ore fines, or a mixture of earthy iron ore fines and iron ore concentrate fines, comprises screening the fines to minus 3/8 inch, providing a moisture content of from 2 to 5% in said fines, briquetting the fines thus prepared at ambient temperature and at a pressure of from 2000 to 30,000 p.s.i. into briquettes of double-convex shape, depositing a layer of the briquettes from 8 to 20 inches thick upon a porous moving belt, preheating the layer with downdraught heated air at 600 DEG to 2200 DEG F. for 3 to 6 minutes, downdraught firing the layer with heated air at 2300 DEG to 2500 DEG F. for 6 to 12 minutes to sinter together the ore particles within the briquettes without sintering together the individual briquettes, and cooling the layer before discharging from the belt. The downdraught firing of the layer may be continued for an additional 1 to 3 minutes with heated air at 1600 DEG to 2000 DEG F. before cooling. 1 to 7% of ground limestone may be added to the fines after screening.
GB4890962A 1962-06-07 1962-12-28 Method of forming heat hardened aggregates of iron ores and iron ore concentrates Expired GB1033149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20065462A 1962-06-07 1962-06-07

Publications (1)

Publication Number Publication Date
GB1033149A true GB1033149A (en) 1966-06-15

Family

ID=22742611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4890962A Expired GB1033149A (en) 1962-06-07 1962-12-28 Method of forming heat hardened aggregates of iron ores and iron ore concentrates

Country Status (1)

Country Link
GB (1) GB1033149A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112322889A (en) * 2020-11-20 2021-02-05 攀钢集团研究院有限公司 Method for producing sinter of vanadium-titanium-iron concentrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112322889A (en) * 2020-11-20 2021-02-05 攀钢集团研究院有限公司 Method for producing sinter of vanadium-titanium-iron concentrate
CN112322889B (en) * 2020-11-20 2022-06-03 攀钢集团研究院有限公司 Method for producing sinter of vanadium-titanium-iron concentrate

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