EP1234889B1 - Einrichtung zum Zerstäuben und Granulieren von Schmelzen - Google Patents
Einrichtung zum Zerstäuben und Granulieren von Schmelzen Download PDFInfo
- Publication number
- EP1234889B1 EP1234889B1 EP02450031A EP02450031A EP1234889B1 EP 1234889 B1 EP1234889 B1 EP 1234889B1 EP 02450031 A EP02450031 A EP 02450031A EP 02450031 A EP02450031 A EP 02450031A EP 1234889 B1 EP1234889 B1 EP 1234889B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- tundish
- whirl
- gate
- annular space
- 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
Links
Images
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
- C21B2400/052—Apparatus features including rotating parts
-
- 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
- C21B2400/052—Apparatus features including rotating parts
- C21B2400/054—Disc-shaped or conical parts for cooling, dispersing or atomising of molten slag rotating along vertical axis
-
- 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
Definitions
- the invention relates to a device for atomizing and granulating melts, especially liquid ones Slag, at which a Tundishauslauf a spray head with an impeller driven for rotation, whose axis of rotation towards the axis of the tundish spout emerging slag jet runs, as well as a cold room connected.
- AT 407 247 B has already proposed a melt from a melt dentalis with fluid under pressure, in particular compressed gas, steam or pressurized water in Direction of slag exit pressed from the tundish has been.
- the Schlackentundishauslauf requires in such Training special measures to prevent the Freezing orifice and it has therefore been proposed a height-adjustable weir pipe in the area of the slag outlet to lower into the tundish to the each outflowing amount to regulate the propellant jet coaxial with Axle of the outlet opening was introduced and the Tundishauslauf immediately flows into the refrigerator.
- AT 405 511 B is a method for granulation and crushing of molten material described in which liquid slag in freefall with pressurized water jets is applied, whereupon the solidified and granulated Slag together with the steam formed via a pneumatic Delivery line and a distributor is performed. That up this way distributed material can be directly in one Jet mill to be further crushed.
- the basic processes during granulation and comminution of molten Material by applying steam are also in EP 683 824 B1 already described, with a mixing chamber provided here is in which water, water vapor and / or air-water mixtures be injected, whereupon the evaporated water in common with the solidified material ejected through a diffuser becomes.
- the atomizer head is in such a configuration designed as a mixing chamber with subsequent diffuser, although in this case molten slag a corresponding storage vessel or a tundish supplied can be.
- a regulation of such a method is only in the extent possible, in which, as required, the corresponding Heat of fusion is provided, so that in particular a reduction in the amount of gas produced and a setting to the desired cooling conditions in such a Melting cyclones can not be achieved.
- the invention now aims to provide a device for atomizing melts, in which much smaller particle sizes than in conventional granulation can be achieved and in which the amount of gas generated in the process or required for the operation of the process can be kept low.
- the device according to the invention of the type mentioned is essentially the fact that the cooling space is formed as the centrifugal concentrically surrounding annulus and connected with the interposition of a heated annular chamber to the impeller.
- a very small-scale device is provided in which the blast wheel correspondingly comminutes the melt flow as a function of the rotational speed, with corresponding coolants being installed in the radially adjoining space.
- the device is thus constructed as a substantially annular chamber, whereby only a small height is required and the manipulation of the melts is simplified accordingly, since the melt no longer, as in conventional Dampfzerstäuberdüsen must be raised accordingly to expelled into an underlying space become.
- the inventive construction is advantageously made such that the Tundishauslauf is in communication with the impeller and the annular space via a heatable connecting pipe.
- the tundish spout can hiebei with burners or hot gas and in particular at temperatures of 1400 ° to 1800 ° C still overheating of the slag are made so that the formation of fine droplets is ensured by the spinner.
- the impeller itself can have a corresponding controllable drive, for example, in the speed range from 3,000 to 20,000 min -1, to be operated.
- the design is advantageously made so that open into the connecting tube burner.
- the designed as an annular chamber cooling chamber can be in conventional Be cooled and it can be the training in particular be made for this purpose so that the radially extending walls of the refrigerator double-walled as Radiation cooling surfaces are formed at the cavity Lines for cooling medium are connected.
- the dimensions of a but such a cooling chamber can also be characterized further reduce when in the cooling chamber directly media be injected, which, for example, under high Decompose enthalpy consumption.
- An advantage is the training Therefore, made so that the designed as a cooling space annulus Connections for the injection of cooling agents, such as e.g. hydrocarbons, has in the annulus.
- 1 denotes a melting tundish, whose Schmelzeausflußregelorgan 2 is designed as a feeder and by lifting in the direction of the double arrow 3 a corresponding Regulation of the respective outflowing melt stream 4 allows.
- a connecting pipe 5 is connected, in which injected via ring nozzles 6 and 7 hot gas becomes.
- each burner open into the shaft formed by the transition pipe 5, so that the slag jet 4 corresponding to temperatures up can be overheated to 1800 ° C.
- an annular chamber 8 is connected, which consists of several sections consists.
- a blast wheel 9 rotatably mounted, wherein the axis of rotation 10 substantially with the axis 11 of the tundish spout flees. The melt or slag thus hits the rotating impeller 9 and is in the radial direction in the annular chamber 8 thrown outward.
- a first to the Blower wheel subsequent section of the annular chamber, which is designated 12 there is a further heating to the Melt temperature according to the desired parameters for example, again to temperatures between 1400 ° and 1800 ° C, so that a fine droplet formation under Avoiding threading occurs.
- the outer area of the Ring chamber 8 is formed as an annular cooling chamber 13, whose walls are double-walled. In the between The cavity 14 enclosed by the walls can be corresponding Coolant can be introduced.
- nozzles 15 are provided, about which, for example, injected hydrocarbons which are the fine under strongly endothermic decomposition Hot melt droplets quickly withdraw heat and in this way ensure a safe solidification and cooling.
- microgranules formed leave the annular cooling chamber on the circumference of the same in particular with temperatures between 200 ° C and 500 ° C and can be collected outside the annulus become.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Fertilizers (AREA)
- Coating By Spraying Or Casting (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Glanulating (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Claims (5)
- Einrichtung zum Zerstäuben und Granulieren von Schmelzen, insbesondere flüssigen Schlacken, bei welcher an einen Tundishauslauf ein Sprühkopf mit einem zur Rotation antreibbaren Schleuderrad (9), dessen Rotationsachse in Richtung der Achse des aus dem Tundishauslauf austretenden Schlackenstrahles (4) verläuft, sowie ein Kühlraum angeschlossen ist, dadurch gekennzeichnet, daß der Kühlraum als das Schleuderrad (9) konzentrisch umgebender Ringraum (13) ausgebildet ist und unter Zwischenschaltung einer beheizbaren Ringkammer (12) an das Schleuderrad (9) angeschlossen ist.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Tundishauslauf mit dem Schleuderrad (9) und dem Ringraum (8) über ein beheizbares Anschlußrohr (5) in Verbindung steht.
- Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß in das Anschlußrohr Brenner (6,7) münden.
- Einrichtung nach einem der Ansprüche 1,2 oder 3, dadurch gekennzeichnet, daß der als Kühlraum ausgebildete Ringraum (13) Anschlüsse (15) für das Eindüsen von Kühlmitteln, wie z.B. Kohlenwasserstoffen, in den Ringraum (13) aufweist.
- Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die sich radial erstreckenden Wände des Kühlraumes (13) doppelwandig als Strahlungskühlflächen ausgebildet sind, an deren Hohlraum (14) Leitungen für Kühlmedium angeschlossen sind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT02450031T ATE339879T1 (de) | 2001-02-27 | 2002-02-13 | Einrichtung zum zerstäuben und granulieren von schmelzen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT3082001 | 2001-02-27 | ||
| AT0030801A AT410097B (de) | 2001-02-27 | 2001-02-27 | Einrichtung zum zerstäuben und granulieren von schmelzen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1234889A1 EP1234889A1 (de) | 2002-08-28 |
| EP1234889B1 true EP1234889B1 (de) | 2003-12-10 |
Family
ID=3671281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02450031A Expired - Lifetime EP1234889B1 (de) | 2001-02-27 | 2002-02-13 | Einrichtung zum Zerstäuben und Granulieren von Schmelzen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1234889B1 (de) |
| AT (2) | AT410097B (de) |
| DE (1) | DE50200129D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10340880A1 (de) * | 2003-09-04 | 2005-03-31 | Polysius Ag | Verfahren und Vorrichtung zum Verdüsen von Schlacke |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1400602A3 (de) * | 2002-09-10 | 2004-07-21 | Tribovent Verfahrensentwicklung GmbH | Verfahren zum Zerstäuben und Granulieren von Schmelzen sowie Vorrichtung zur Durchführung dieses Verfahrens |
| AT411689B (de) * | 2002-09-10 | 2004-04-26 | Tribovent Verfahrensentwicklg | Verfahren zum zerstäuben und granulieren von schmelzen sowie vorrichtung zur durchführung dieses verfahrens |
| GB2508199A (en) * | 2012-11-23 | 2014-05-28 | Siemens Vai Metals Tech Gmbh | Slag granulation device with a tundish and a slag flow control means |
| CN117126970B (zh) * | 2023-08-29 | 2025-11-18 | 一重集团大连工程技术有限公司 | 一种离心粒化余热回收装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH215365A (de) * | 1938-11-11 | 1941-06-30 | Glasfasern A G | Verfahren und Vorrichtung zur Erzeugung von Fasern aus Glas, Schlacke oder ähnlichen in der Hitze plastischen Stoffen. |
| JPS52123992A (en) * | 1976-04-12 | 1977-10-18 | Kawasaki Heavy Ind Ltd | Method and apparatus for cooling slag |
| JPS604730B2 (ja) * | 1977-09-14 | 1985-02-06 | 株式会社クボタ | スカム粒状化装置 |
| AT407224B (de) * | 1999-03-24 | 2001-01-25 | Holderbank Financ Glarus | Verfahren zum granulieren und zerkleinern von flüssigen schmelzen |
-
2001
- 2001-02-27 AT AT0030801A patent/AT410097B/de not_active IP Right Cessation
-
2002
- 2002-02-13 EP EP02450031A patent/EP1234889B1/de not_active Expired - Lifetime
- 2002-02-13 AT AT02450031T patent/ATE339879T1/de not_active IP Right Cessation
- 2002-02-13 DE DE50200129T patent/DE50200129D1/de not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10340880A1 (de) * | 2003-09-04 | 2005-03-31 | Polysius Ag | Verfahren und Vorrichtung zum Verdüsen von Schlacke |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA3082001A (de) | 2002-06-15 |
| AT410097B (de) | 2003-01-27 |
| EP1234889A1 (de) | 2002-08-28 |
| ATE339879T1 (de) | 2003-12-15 |
| DE50200129D1 (de) | 2004-01-22 |
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