EP0128131B1 - Procédé pour éliminer le soufre pendant la fusion de fonte brute - Google Patents

Procédé pour éliminer le soufre pendant la fusion de fonte brute Download PDF

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Publication number
EP0128131B1
EP0128131B1 EP84890076A EP84890076A EP0128131B1 EP 0128131 B1 EP0128131 B1 EP 0128131B1 EP 84890076 A EP84890076 A EP 84890076A EP 84890076 A EP84890076 A EP 84890076A EP 0128131 B1 EP0128131 B1 EP 0128131B1
Authority
EP
European Patent Office
Prior art keywords
desulfurating
agent
slag
lumpy
coal
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
EP84890076A
Other languages
German (de)
English (en)
Other versions
EP0128131A1 (fr
Inventor
Horst Dipl.-Ing. Sulzbacher
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.)
Voestalpine AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0128131A1 publication Critical patent/EP0128131A1/fr
Application granted granted Critical
Publication of EP0128131B1 publication Critical patent/EP0128131B1/fr
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
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon

Claims (7)

1. Procédé de désulfuration dans la fusion de fonte brute dans une couche de lit fluidisé de charbon, caractérisé en ce qu'on introduit l'agent de désulfuration en morceaux et en grains dans la couche de lit fluidisé de charbon et dans la couche de laitier, en ce que la fraction d'agent de désulfuration pour la couche de lit fluidisé de charbon est introduite à une granulométrie de 0,5 -5 mm et la fraction d'agent de désulfuration pour le laitier à une granulométrie de 5-50 mm et en ce que la fraction d'agent de désulfuration en morceaux dans le mélange total est choisie inférieure ou égale à 50% en poids.
2. Procédé selon la revendication 1, caractérisé en ce qu'on utilise comme agents de désulfuration le manganèse, le calcium, le magnésium, les bases ou les terres rares sous forme d'oxydes, de carbures, de carbonates, d'alliages ou sous forme métallique.
3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que la fraction en grains et en morceaux de l'agent de désulfuration est introduite au dessus de la couche de flit fluidisé de charbon ou latéralement dans celle-ci.
4. Procédé selon l'une des revendications 1, 2 ou 3, caractérisé en ce que l'agent de désulfuration est introduit avec le charbon, les additifs ou les matières de recyclage.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'agent de désulfuration est introduit au moins en partie sous forme agglomérée.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'on introduit un mélange de plusieurs agents de désulfuration sous forme de granulés ou d'agglomérats.
7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'agent de désulfuration est chargé entièrement ou partie lors de l'introduction du minerai.
EP84890076A 1983-05-04 1984-04-26 Procédé pour éliminer le soufre pendant la fusion de fonte brute Expired EP0128131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0164683A AT387036B (de) 1983-05-04 1983-05-04 Verfahren zum entfernen von schwefel bei der erschmelzung von roheisen
AT1646/83 1983-05-04

Publications (2)

Publication Number Publication Date
EP0128131A1 EP0128131A1 (fr) 1984-12-12
EP0128131B1 true EP0128131B1 (fr) 1987-04-01

Family

ID=3517920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84890076A Expired EP0128131B1 (fr) 1983-05-04 1984-04-26 Procédé pour éliminer le soufre pendant la fusion de fonte brute

Country Status (5)

Country Link
US (1) US4566902A (fr)
EP (1) EP0128131B1 (fr)
JP (1) JPS59208007A (fr)
AT (1) AT387036B (fr)
DE (1) DE3462925D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388176B (de) * 1987-07-30 1989-05-10 Voest Alpine Ag Verfahren und anlage zur gewinnung von fluessigem roheisen oder stahlvorprodukten aus stueckigen, eisenoxidhaeltigen einsatzstoffen
CN115044402B (zh) * 2022-06-13 2023-04-25 太原理工大学 一种煤的原位高温溶浸脱硫方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1153395B (de) * 1953-05-29 1963-08-29 Werner Wenzel Dr Ing Verfahren zur Eisengewinnung aus in der Schwebe befindlichen, staub-foermigen bzw. feinkoernigen Eisenerzen mittels Brennstoffen in feinem Verteilungs-grad
DE1160457B (de) * 1955-06-18 1964-01-02 Knapsack Ag Verfahren zur Kokseinsparung und Leistungssteigerung bei der Herstellung von Roheisen im Hochofen
DE2133860A1 (en) * 1970-07-07 1972-01-13 Barker, Arnold Verdun, Palm Beach, New South Wales (Australien) Direct reduction of iron ore - using cyclone furnace and electric arc or induction furnace
US3948645A (en) * 1973-04-30 1976-04-06 Boliden Aktiebolag Method of carrying out heat-requiring chemical and/or physical processes in a fluidized bed
DE2401909C3 (de) * 1974-01-16 1985-06-27 Fried. Krupp Gmbh, 4300 Essen Verfahren zur Herstellung von Stahl
SE388875B (sv) * 1975-03-03 1976-10-18 Stora Kopparbergs Bergslags Ab Sett vid reduktion av finkornigt jernoxidhaltigt material i flyttbedd
DE2843303C2 (de) * 1978-10-04 1982-12-16 Korf-Stahl Ag, 7570 Baden-Baden Verfahren und Anlage zur Erzeugung von flüssigem Roheisen und Reduktionsgas in einem Einschmelzvergaser
US4260412A (en) * 1980-01-16 1981-04-07 Midrex Corporation Method of producing direct reduced iron with fluid bed coal gasification
SE457265B (sv) * 1981-06-10 1988-12-12 Sumitomo Metal Ind Foerfarande och anlaeggning foer framstaellning av tackjaern

Also Published As

Publication number Publication date
AT387036B (de) 1988-11-25
DE3462925D1 (en) 1987-05-07
JPS59208007A (ja) 1984-11-26
ATA164683A (de) 1988-04-15
JPH046767B2 (fr) 1992-02-06
EP0128131A1 (fr) 1984-12-12
US4566902A (en) 1986-01-28

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