EP0683824B1 - Procede et dispositif de granulation et de broyage de materiaux en fusion et de matieres a moudre - Google Patents

Procede et dispositif de granulation et de broyage de materiaux en fusion et de matieres a moudre Download PDF

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Publication number
EP0683824B1
EP0683824B1 EP95901265A EP95901265A EP0683824B1 EP 0683824 B1 EP0683824 B1 EP 0683824B1 EP 95901265 A EP95901265 A EP 95901265A EP 95901265 A EP95901265 A EP 95901265A EP 0683824 B1 EP0683824 B1 EP 0683824B1
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EP
European Patent Office
Prior art keywords
diffuser
mixing chamber
water
slag
vapour
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 - Lifetime
Application number
EP95901265A
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German (de)
English (en)
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EP0683824A1 (fr
Inventor
Alfred 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.)
Holcim Ltd
Original Assignee
Holderbank Financiere Glarus AG
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Filing date
Publication date
Application filed by Holderbank Financiere Glarus AG filed Critical Holderbank Financiere Glarus AG
Publication of EP0683824A1 publication Critical patent/EP0683824A1/fr
Application granted granted Critical
Publication of EP0683824B1 publication Critical patent/EP0683824B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • 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
    • 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
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/074—Tower structures for cooling, being confined but not sealed

Definitions

  • the invention relates to a method for granulating and crushing molten material and regrind, wherein the melt is introduced into a mixing chamber in the mixing chamber water, water vapor and / or air / water mixtures be injected and the evaporated water together ejected with the solidified slag via a diffuser becomes.
  • Molten blast furnace slag is usually made with the help granulated by water to obtain an amorphous product which in the glass phase, i.e. solidified in a metastable phase. After a grinding process, such a product can be used as hydraulically active component can be added to cements. The The heat of fusion of the melt flow is such a procedure converted into a low temperature heat of water and is no longer usable.
  • the invention now aims at a method of the beginning to create the kind with which it succeeds in creating the Melting heat of slags is much better thermodynamically to use and the usually required grinding effort in case of further use as a cement aggregate or for grinding clinker for the production of To make cement more energy-efficient.
  • the object of the inventive method is essentially in that the melt is introduced under pressure into the mixing chamber is and the exit beam of the diffuser against one Exit beam of another diffuser is directed. Because the melt, for example with compressed air in a Mixing chamber is introduced and water in the mixing chamber, Water vapor and / or air / water mixtures are injected, creates a rapidly expanding dispersion of solidifying molten material, the expanding gas flow is expelled through a diffuser.
  • the gas flow breaks the particles solidified to amorphous slag glass underneath extreme volume increase with it, taking the thermal energy is converted into kinetic energy, which is a directed flow of the granulated material formed enables.
  • the pressure in the mixing chamber corresponds to essential the flow losses of the formed, strong superheated steam.
  • the heat of slag is mainly converted into flow energy, and it becomes the amorphous Cinder glass particles entrained with the flow.
  • the high kinetic energy is now immediately for the comminution of oversize grain is used, for which the method is carried out so that the exit jet of the diffuser against an exit jet of another Diffuser is directed. By colliding with others particle streams flowing out with high kinetic energy the kinetic energy is used for reduction the energy required for the grinding process, and it takes place thus a far more extensive use of the Melt contained heat than this with known methods was the case.
  • the steam formed in the process according to the invention has a compared to conventional slag pelletizers much higher temperature level, and the steam temperature can be recovered in a conventional manner.
  • the procedure is such that the steam formed withdrawn and passed over a heat exchanger, and that the condensate of the mixing chamber is returned, so that also used water can be circulated.
  • the device according to the invention consists essentially in that a pipe for molten slag with a Mixing chamber is connected to the mixing chamber that lines for water, water vapor and / or water / air mixtures, that a diffuser is connected to the mixing chamber, and that baffles to the outlet opening or further outlet openings for accelerated particles whose axis is the axis cut the outlet opening of the diffuser, are arranged.
  • the blast furnace slag granules formed can with such Furnishing not only in the amorphous glass phase solidify, but also at the same time taking advantage the resulting from thermal energy through conversion kinetic energy are crushed to the extent that a further grinding process can be omitted. So it becomes immediate the thermodynamic energy of the slag melt also for made the grinding process usable.
  • the device according to the invention is advantageously developed in such a way that that the line for molten slag over a nozzle assembly with ring nozzles that can be pressurized with compressed air opens into the mixing chamber, resulting in better dispersion in the mixing chamber, which is designed as a granulating evaporator is can be achieved.
  • the fine dispersion caused by the Compressed air exposure is achieved, allows much simpler facilities for the introduction of Provide pressurized water or steam, the water jet for example, be pushed radially into the mixing chamber can.
  • the training is advantageously made such that between Mixing chamber and diffuser with an injector chamber opposite Diffuser outlet opening less effective Cross section is arranged to which a line for additional regrind or additives is connected, so that under Taking advantage of the injector effect immediately suction or a metered introduction of additives or other regrind in the device according to the invention is possible.
  • 1 denotes a slag melting vessel, from which a slag melt 2 via a tap opening 3 is subtracted.
  • the tap opening 3 opens via an annular nozzle 4 into a mixing chamber 5 of the invention Device for granulating and crushing the Slag, which is designated 6 in total.
  • 6 in total.
  • Compressed air introduced, creating a homogeneous dispersion of the Slag jet is achieved in the mixing chamber 5.
  • To the Mixing chamber 5 also open lines 8 for pressurized water. The Pressure water pushed into the mixing chamber 5 via the lines 8 expands at high speed and can move towards flow out of arrow 9.
  • this outflow Direction of arrow 9 is the granulated particles flow energy given so that the particle flow with the steam the outlet opening 10 of a steam diffuser 11 with high Speed, and thus high kinetic energy of the contained Particles can leave.
  • On the way between the mixing chamber 5 and the steam diffuser 11 is an area 12 with reduced Cross section provided, in which at the same time Form a negative pressure at maximum flow rate can, so that 13 further regrind or Aggregates or additives are drawn in according to the injector principle can be.
  • a storage container 14 is provided, and there is a dosing screw 15 in the feed channel Injector chamber arranged.
  • the regrind designated 22 can after sieving used directly as cement or cement aggregate with any oversize that is still present over the line 13 can be returned to the injector chamber 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Disintegrating Or Milling (AREA)
  • Manufacture Of Iron (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Furnace Details (AREA)
  • Glanulating (AREA)

Claims (9)

  1. Procédé de granulation et de fragmentation de matériau en fusion et de matière à broyer (22), selon lequel la masse fondue est introduite dans une chambre mélangeuse (5), de l'eau, de la vapeur d'eau et/ou des mélanges d'air et d'eau sont injectés dans la chambre mélangeuse (5) et l'eau vaporisée est éjectée, conjointement avec la scorie solidifiée, au travers d'un diffuseur (11), caractérisé en ce que la masse fondue est introduite sous pression dans la chambre mélangeuse et le jet de sortie du diffuseur (11) est dirigé contre un jet de sortie d'un autre diffuseur (17).
  2. Procédé selon la revendication 1, caractérisé en ce qu'un supplément de matière à broyer (22) ou des additifs sont introduits, par l'intermédiaire d'un injecteur, entre la chambre mélangeuse (5) et le diffuseur.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la vapeur formée est extraite et est envoyée sur un échangeur de chaleur, et en ce que le condensat est recyclé dans la chambre mélangeuse (5).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la vitesse de sortie du jet de vapeur hors du diffuseur (11) est ajustée à une valeur inférieure à la vitesse du son.
  5. Dispositif de granulation et de fragmentation de scorie de haut fourneau, de clinker, ou analogues, dans lequel de la scorie en fusion est refroidie avec de l'eau, en formant une phase vitreuse, caractérisé en ce qu'un conduit (13) pour la scorie en fusion est relié à une chambre mélangeuse (6), en ce que des conduits pour de l'eau (8), de la vapeur d'eau et/ou des mélanges d'eau et d'air débouchent dans la chambre mélangeuse (6), en ce qu'un diffuseur (11) est raccordé à la chambre mélangeuse (6) et en ce que l'axe (18) de l'ouverture de sortie (10) du diffuseur (11) est dirigé sur une surface d'impact (21) et coupe celui de l'ouverture de sortie (16) d'au moins un autre diffuseur (17).
  6. Dispositif selon la revendication 5, caractérisé en ce que le conduit (3) pour la scorie en fusion (2) débouche dans la chambre mélangeuse au travers d'une canne d'injection à buses annulaires (4), pouvant être alimentée en air comprimé.
  7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce qu'entre la chambre mélangeuse (5) et le diffuseur (11), est disposée une chambre formant injecteur (12) qui présente une section transversale utile plus petite que celle de l'ouverture de sortie (10) du diffuseur (11) et à laquelle est raccordé un conduit (13) pour un supplément de matière à broyer ou pour des additifs.
  8. Dispositif selon l'une des revendications 5, 6 ou 7, caractérisé en ce qu'en aval de l'ouverture de sortie (10) du diffuseur (11), est disposé un dispositif d'aspiration de vapeur, le conduit d'aspiration de vapeur étant relié à au moins un échangeur de chaleur, à la suite duquel le condensat est recyclable dans la chambre mélangeuse (5) par l'intermédiaire d'une pompe.
  9. Dispositif selon l'une des revendications 5 à 8, caractérisé en ce qu'en aval du diffuseur (11), est installé un dispositif de tamisage ou de triage et en ce que le refus du tamisage ou le grain trop gros est recyclable dans la chambre d'injection (12) par l'intermédiaire d'un dispositif de transport.
EP95901265A 1993-12-03 1994-12-01 Procede et dispositif de granulation et de broyage de materiaux en fusion et de matieres a moudre Expired - Lifetime EP0683824B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT245893 1993-12-03
AT0245893A AT400140B (de) 1993-12-03 1993-12-03 Verfahren zum granulieren und zerkleinern von schmelzflüssigem material und mahlgut sowie einrichtung zur durchführung dieses verfahrens
AT2458/93 1993-12-03
PCT/AT1994/000185 WO1995015402A1 (fr) 1993-12-03 1994-12-01 Procede et dispositif de granulation et de broyage de materiaux en fusion et de matieres a moudre

Publications (2)

Publication Number Publication Date
EP0683824A1 EP0683824A1 (fr) 1995-11-29
EP0683824B1 true EP0683824B1 (fr) 1999-12-29

Family

ID=3534732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901265A Expired - Lifetime EP0683824B1 (fr) 1993-12-03 1994-12-01 Procede et dispositif de granulation et de broyage de materiaux en fusion et de matieres a moudre

Country Status (12)

Country Link
US (1) US5667147A (fr)
EP (1) EP0683824B1 (fr)
AT (2) AT400140B (fr)
AU (1) AU1057695A (fr)
DE (1) DE59409039D1 (fr)
DK (1) DK0683824T3 (fr)
ES (1) ES2142468T3 (fr)
GR (1) GR3032934T3 (fr)
PT (1) PT683824E (fr)
TR (1) TR27905A (fr)
WO (1) WO1995015402A1 (fr)
ZA (1) ZA949263B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1182270A1 (fr) 2000-08-16 2002-02-27 Holcim Ltd. Dispositif pour pulvériser des matières liquides,en particulier des matériaux en fusion

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW503265B (en) * 1995-12-28 2002-09-21 Mitsubishi Material Silicon Single crystal pulling apparatus
DE19632698A1 (de) * 1996-08-14 1998-02-19 Forschungsgemeinschaft Eisenhu Verfahren zur Herstellung von Hüttensand mit geringer Partikelgröße
AT405511B (de) * 1997-10-29 1999-09-27 Holderbank Financ Glarus Verfahren zum granulieren und zerkleinern von schmelzflüssigem material sowie vorrichtung zur durchführung dieses verfahrens
BR9904830A (pt) 1998-02-18 2000-05-23 Holderbank Financ Glarus Processo para granular e triturar escórias lìquidas e dispostivo para a execução do processo
AT406262B (de) 1998-06-29 2000-03-27 Holderbank Financ Glarus Verfahren und vorrichtung zum granulieren und zerkleinern von flüssigen schlacken
US5976243A (en) * 1998-09-24 1999-11-02 Lafarge Canada Inc. Process for producing cement clinker containing blast furnace slag
AT406263B (de) * 1998-11-25 2000-03-27 Holderbank Financ Glarus Verfahren zum zerkleinern und granulieren von schlacken
AT407247B (de) * 1998-12-01 2001-01-25 Holderbank Financ Glarus Verfahren zum granulieren von flüssigen schlackenschmelzen sowie vorrichtung zur durchführung dieses verfahrens
AT406956B (de) * 1999-01-20 2000-11-27 Holderbank Financ Glarus Verfahren zum zerkleinern von klinker sowie vorrichtung zur durchführung dieses verfahrens
AT406955B (de) * 1999-01-28 2000-11-27 Holderbank Financ Glarus Verfahren und vorrichtung zum granulieren und zerkleinern von flüssigen schlacken
AT407224B (de) * 1999-03-24 2001-01-25 Holderbank Financ Glarus Verfahren zum granulieren und zerkleinern von flüssigen schmelzen
AT407841B (de) * 1999-08-27 2001-06-25 Holderbank Financ Glarus Vorrichtung zum granulieren und zerkleinern von flüssigen schlacken oder schaumschlacken
BR9905656A (pt) 1999-11-30 2001-07-24 Viviane Vasconcelos Vilela Ltd Aparelhagem e processo para a extração de calor e para a solidificação de partìculas de materiais fundidos
AT408437B (de) * 2000-02-22 2001-11-26 Holderbank Financ Glarus Einrichtung zum zerstäuben von flüssigen schmelzen
AT408956B (de) * 2000-05-11 2002-04-25 Tribovent Verfahrensentwicklg Einrichtung zur erzeugung eines heissen treibgasstromes
AT410098B (de) * 2001-03-15 2003-01-27 Tribovent Verfahrensentwicklg Einrichtung zum granulieren von schmelzen
AT410219B (de) * 2001-05-10 2003-03-25 Tribovent Verfahrensentwicklg Verfahren zum zerstäuben von schmelzflüssigem material, wie z.b. flüssigen schlacken, glasschmelzen und/oder metallschmelzen sowie vorrichtung zur durchführung dieses verfahrens
SK500452011A3 (sk) 2011-11-04 2013-09-03 Igor Kocis Method for rock dislodging by melting and interaction with water streams

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DE413903C (de) * 1924-01-16 1925-07-06 Friedrich Nettel Dipl Ing Verfahren zur Herstellung von Stuecken aus glasartigen Schlacken
US2450978A (en) * 1944-07-03 1948-10-12 Leona Templeton Caldwell Method and apparatus for production of expanded slag
DE1137048B (de) * 1960-08-19 1962-09-27 Thyssen Huette Ag Verfahren und Vorrichtung zum Herstellen von koernigen Duenge-phosphaten aus dem Schmelzfluss
GB1032608A (en) * 1963-04-11 1966-06-15 Fred Osborne Method of and apparatus for processing molten slag and the like
DE2444197C2 (de) * 1974-09-16 1985-11-07 Becker, Winfried, 4300 Essen Verfahren zur Herstellung granulierter Hochofenschlacke
SU606830A1 (ru) * 1976-05-07 1978-04-24 Запорожский титано-магниевый комбинат Струный аппарат
JPS53109895A (en) * 1977-03-09 1978-09-26 Nippon Steel Corp Production of granulated slag by blowing
SU939054A1 (ru) * 1979-12-28 1982-06-30 Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Струйный аппарат дл гранул ции расплава
SU1000090A1 (ru) * 1981-10-28 1983-02-28 Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Гранул тор расплава
LU86054A1 (fr) * 1985-08-27 1987-03-06 Wurth Paul Sa Procede de traitement de laitier metallurgique d'un four a cuve
SU1364610A1 (ru) * 1986-05-05 1988-01-07 Ленинградское высшее военное инженерное строительное училище им.генерала армии А.Н.Комаровского Устройство дл переработки расплава шлака
US5441205A (en) * 1993-06-30 1995-08-15 Mitsubishi Materials Corporation Apparatus for water-granulating slag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1182270A1 (fr) 2000-08-16 2002-02-27 Holcim Ltd. Dispositif pour pulvériser des matières liquides,en particulier des matériaux en fusion

Also Published As

Publication number Publication date
AU1057695A (en) 1995-06-19
TR27905A (tr) 1995-10-11
DE59409039D1 (de) 2000-02-03
GR3032934T3 (en) 2000-07-31
ES2142468T3 (es) 2000-04-16
PT683824E (pt) 2000-06-30
DK0683824T3 (da) 2000-06-19
AT400140B (de) 1995-10-25
ATA245893A (de) 1995-02-15
ZA949263B (en) 1995-10-23
ATE188258T1 (de) 2000-01-15
EP0683824A1 (fr) 1995-11-29
WO1995015402A1 (fr) 1995-06-08
US5667147A (en) 1997-09-16

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