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EP1241271A3 - Process for granulating of slag - Google Patents

Process for granulating of slag Download PDF

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Publication number
EP1241271A3
EP1241271A3 EP02450048A EP02450048A EP1241271A3 EP 1241271 A3 EP1241271 A3 EP 1241271A3 EP 02450048 A EP02450048 A EP 02450048A EP 02450048 A EP02450048 A EP 02450048A EP 1241271 A3 EP1241271 A3 EP 1241271A3
Authority
EP
European Patent Office
Prior art keywords
slag
cooling chamber
lance
granulating
air
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.)
Withdrawn
Application number
EP02450048A
Other languages
German (de)
French (fr)
Other versions
EP1241271A2 (en
Inventor
Alfred Dipl.Ing. Edlinger
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.)
Tribovent Verfahrensentwicklung GmbH
Original Assignee
Tribovent Verfahrensentwicklung GmbH
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
Priority claimed from AT0040301A external-priority patent/AT409969B/en
Application filed by Tribovent Verfahrensentwicklung GmbH filed Critical Tribovent Verfahrensentwicklung GmbH
Publication of EP1241271A2 publication Critical patent/EP1241271A2/en
Publication of EP1241271A3 publication Critical patent/EP1241271A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Bei einem Verfahren zum Granulieren von Schlacken mit einer Schlackenbasizität CaO/SiO2 von kleiner 1 und einem Al2O3-Gehalt größer 6 Gew. % mit einem Schlackentundish und einer in den Schlackenaustritt mündenden Treibstrahllanze, wobei an den Schlackenaustritt ein Kühlraum angeschlossen ist, wird die Treibstrahllanze mit Förderluft im Druckbereich zwischen 0,5 und 3 bar beaufschlagt und über den Mantel des Kühlraumes Ergänzungsluft in den Kühlraum eingeblasen.In a process for granulating slags with a slag basicity CaO / SiO 2 of less than 1 and an Al 2 O 3 content of more than 6% by weight with a slag tundish and a propulsion jet lance opening into the slag outlet, a cooling space being connected to the slag outlet, the driving jet lance is supplied with conveying air in the pressure range between 0.5 and 3 bar and supplementary air is blown into the cooling chamber via the jacket of the cooling chamber.

Die Vorrichtung zur Durchführung des Verfahrens zeichnet sich dadurch aus, daß die Druckluftlanze (5) in einem temperaturbeständigen Rohr (3) isolierend angeordnet ist und daß an den im wesentlichen zylindrischen Kühlraum (7) eine Prallmühle (10) angeschlossen ist.

Figure 00000001
The device for carrying out the method is characterized in that the compressed air lance (5) is arranged in an insulating manner in a temperature-resistant tube (3) and in that an impact mill (10) is connected to the essentially cylindrical cooling chamber (7).
Figure 00000001
EP02450048A 2001-03-14 2002-03-06 Process for granulating of slag Withdrawn EP1241271A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT403012001 2001-03-14
AT0040301A AT409969B (en) 2001-03-14 2001-03-14 Device, for sputtering and granulating liquid slag, has sputtering nozzle formed as double wall tube with slit-like nozzles on inner wall
AT0064501A AT410099B8 (en) 2001-03-14 2001-04-20 METHOD FOR GRANULATING SLAG
AT645012001 2001-04-20

Publications (2)

Publication Number Publication Date
EP1241271A2 EP1241271A2 (en) 2002-09-18
EP1241271A3 true EP1241271A3 (en) 2003-01-15

Family

ID=25608316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02450048A Withdrawn EP1241271A3 (en) 2001-03-14 2002-03-06 Process for granulating of slag

Country Status (2)

Country Link
EP (1) EP1241271A3 (en)
AT (1) AT410099B8 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282039B (en) * 1964-02-22 1968-11-07 Fritz Forschepiepe Process for the extraction of pre-crushed blast furnace slag
LU81385A1 (en) * 1979-06-15 1981-02-03 Arbed METHOD AND DEVICE FOR PRODUCING SLAG WOOL FROM BLAST FURNACE SLAGS
WO1989000470A1 (en) * 1987-07-20 1989-01-26 Battelle Development Corporation Double disintegration powder method
DE4019563A1 (en) * 1990-06-15 1991-12-19 Mannesmann Ag Prodn. of e.g. iron powder by atomising cast melt stream - using gaseous phase of liquid droplets esp. water to effect atomisation
DE19632698A1 (en) * 1996-08-14 1998-02-19 Forschungsgemeinschaft Eisenhu Fine grained slag sand production
WO2000032306A1 (en) * 1998-12-01 2000-06-08 Holderbank Financiere Glarus Ag Method for granulating a liquid slag bath and device for carrying out the method
WO2000044942A1 (en) * 1999-01-28 2000-08-03 'holderbank' Financiere Glarus Ag Method and device for granulating and fragmenting liquid slags

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282039B (en) * 1964-02-22 1968-11-07 Fritz Forschepiepe Process for the extraction of pre-crushed blast furnace slag
LU81385A1 (en) * 1979-06-15 1981-02-03 Arbed METHOD AND DEVICE FOR PRODUCING SLAG WOOL FROM BLAST FURNACE SLAGS
WO1989000470A1 (en) * 1987-07-20 1989-01-26 Battelle Development Corporation Double disintegration powder method
DE4019563A1 (en) * 1990-06-15 1991-12-19 Mannesmann Ag Prodn. of e.g. iron powder by atomising cast melt stream - using gaseous phase of liquid droplets esp. water to effect atomisation
DE19632698A1 (en) * 1996-08-14 1998-02-19 Forschungsgemeinschaft Eisenhu Fine grained slag sand production
WO2000032306A1 (en) * 1998-12-01 2000-06-08 Holderbank Financiere Glarus Ag Method for granulating a liquid slag bath and device for carrying out the method
WO2000044942A1 (en) * 1999-01-28 2000-08-03 'holderbank' Financiere Glarus Ag Method and device for granulating and fragmenting liquid slags

Also Published As

Publication number Publication date
EP1241271A2 (en) 2002-09-18
AT410099B (en) 2003-01-27
AT410099B8 (en) 2003-02-25
ATA6452001A (en) 2002-06-15

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