EP1241272A1 - Dispositif de granulation de fontes - Google Patents

Dispositif de granulation de fontes Download PDF

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Publication number
EP1241272A1
EP1241272A1 EP02450049A EP02450049A EP1241272A1 EP 1241272 A1 EP1241272 A1 EP 1241272A1 EP 02450049 A EP02450049 A EP 02450049A EP 02450049 A EP02450049 A EP 02450049A EP 1241272 A1 EP1241272 A1 EP 1241272A1
Authority
EP
European Patent Office
Prior art keywords
steam
nozzles
line
channel
housing
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Withdrawn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
EP02450049A
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German (de)
English (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
Application filed by Tribovent Verfahrensentwicklung GmbH filed Critical Tribovent Verfahrensentwicklung GmbH
Publication of EP1241272A1 publication Critical patent/EP1241272A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a device for granulating of melts, especially liquid slags using from steam, with a melting unit or tundish which the liquid melt is discharged into a granulating room becomes.
  • AT 407 247 has already proposed a melt ejecting from a melt tundish with fluid under pressure, where in particular pressurized gas, steam or pressurized water in Pressed in the direction of the slag outlet from the tundish has been.
  • the slag tundish outlet requires such Training special measures to prevent the Outlet opening freezes and it was therefore proposed to height-adjustable weir pipe in the area of the slag outlet into the tundish to reduce the amount flowing out to be able to regulate, the propellant gas jet coaxial to Axis of the outlet opening was introduced and the tundish outlet opens directly into the refrigerator.
  • the atomizer head as a nozzle, in which coaxial the jet of a propellant gas lance opens, as a rule superheated steam can be used to overgrow the To prevent opening.
  • training Atomizer head as an outlet nozzle from a slag tundish are further training courses, for example AT 406 954 B. remove, where the liquid slag in a below Expansion chamber under suction is sucked in and with a propellant jet is transported into the cooling zone.
  • AT 405 511 describes a process for granulating and comminuting described by molten material, in which liquid slag in free fall 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 guided.
  • the material distributed in this way can be used immediately in a Jet mill to be further crushed.
  • the basic processes when granulating and crushing molten liquid Material by applying steam is also in EP 683 824 B1 already described, a mixing chamber being provided here is in which water, water vapor and / or air-water mixtures be injected, whereupon the evaporated water together ejected with the solidified material via a diffuser becomes.
  • the atomizer head is of such a design designed as a mixing chamber with a subsequent diffuser, in this case, too, molten slag a corresponding storage vessel or a tundish can be.
  • AT 407 152 B uses solid material in a melting cyclone melted, being on the flameproof closable Melting cyclone is directly connected to a cold room, which is subsequently under less pressure than the melting cyclone must be kept to prevent the material from leaking out to enable the melting cyclone into the cold room.
  • the required heat of fusion in Melting cyclone must be applied during combustion generates a large amount of gas from fuels in the melting cyclone, which consequently requires a correspondingly complex cleaning requires.
  • a regulation of such a method is only possible to the extent that the corresponding Heat of fusion is provided, so in particular a reduction in the amount of gas produced and an adjustment to the desired cooling conditions within the scope of such Melting cyclones cannot be achieved.
  • the invention now aims to provide a simple device for granulating melts of the type mentioned at the beginning create, in which the elaborate gas cleaning in use of high amounts of propellant gas as well as training constructively elaborate spray heads is avoided and with a simple Design an efficient granulation of melts succeeds.
  • the invention Training essentially in that the melting unit or the tundish is a slag flow control device in the form of a height-adjustable weir has that at the melt outlet a gutter made of refractory material connects that Channel is arranged in a closed housing and in its bottom has openings for receiving steam nozzles, and that to the housing at least one line for the Discharge of steam and a lock for the discharge of Granulate is connected.
  • wet steam can be applied immediately the melt flowing in the channel is directed, with a vapor screen between the refractory material the gutter and the melt are formed can, which can protect the refractory lining.
  • the registered wet steam is the invention Established so that they are in one closed housing is housed, so that the formed superheated steam discharged, cleaned and cleaned accordingly if necessary, fine granules discharged can be separated.
  • Setup is made so that the bottom the gutter is provided with an insulation layer and that the nozzles are arranged in the area of the insulation layer are.
  • Such an insulation layer serves the further Protection of the nozzles and reduces thermal losses, so that superheated steam is discharged from the closed housing can be.
  • the training taken so that in the line for Discharge of steam from the closed housing Hot cyclone for separating fine granules is arranged.
  • the training is advantageous met that the closed housing at least one across has partition running to the gutter, the lower edge forming a gap between in the direction of Melt flow flows adjacent nozzles, and that to each so formed chamber of the housing a line for withdrawing Steam and a hot cyclone are connected.
  • FIG. 1 shows a cross section through an inventive Setup schematically partly in section
  • FIG. 2 shows an enlarged illustration of mixing nozzles for the gutter shown in Fig. 1 partially in section.
  • Fig. 1 the melt or slag tapping is one Melting unit or a tundish designated 1.
  • a height-adjustable weir 2 is provided, over which the layer thickness of the following Channel 3 passing melt can be regulated accordingly can.
  • the channel 3 has openings 4 for the reception of Steam nozzles, which are shown in detail in FIG. 2 are.
  • a closed housing 5 is located above the channel, which by means of essentially vertical partition walls 6 into individual Chambers 7, 8 and 9 is divided.
  • the vertical partitions 6 ends hiebei at a distance above the channel 3, so that a free cross-section for the passage of the melt or of the solidifying material remains, these walls above from areas of the gutter where there are no openings 4 are arranged for the steam nozzles.
  • the chambers 7, 8 and 9 become steam with different Temperature level deducted via steam lines 10, respectively a hot cyclone to each such steam line 10 11 connects in which fine granules from the withdrawn Steam can be separated and in each case via rotary valves 12 can be carried out.
  • the resulting granulate 13 in the last chamber 9 is about a rotary valve 14 discharged.
  • from the third Chamber 9 superheated steam with temperatures between 300 ° and 600 ° C deducted.
  • the mixing nozzles connected to the openings 4 are shown in more detail in Fig. 2.
  • the gutter 3 made of refractory material is provided on its underside with an insulation layer 15, so that the mixing nozzles are only slightly thermally stressed become.
  • a pressurized water connection 17 opens at the mixing nozzles 16 and a connection 18 for the supply of saturated steam.
  • saturated steam is usually in the pressure range between 1 and 5 bar and Pressurized water used in the pressure range between 2 and 30 bar.
  • the saturated steam is fed through the outer annular space of the mixing nozzle 16 supplied, in which swirl body 19 are installed, for intensive mixing of the steam with the pressurized water to achieve.
  • the granules discharged via the rotary valve 14 have in usually diameter between 0.5 and 1.5 mm, whereby the Fine granules withdrawn via the steam lines 10 are essential has a smaller maximum diameter.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
EP02450049A 2001-03-15 2002-03-06 Dispositif de granulation de fontes Withdrawn EP1241272A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0040601A AT410098B (de) 2001-03-15 2001-03-15 Einrichtung zum granulieren von schmelzen
AT4062001 2001-03-15

Publications (1)

Publication Number Publication Date
EP1241272A1 true EP1241272A1 (fr) 2002-09-18

Family

ID=3673673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02450049A Withdrawn EP1241272A1 (fr) 2001-03-15 2002-03-06 Dispositif de granulation de fontes

Country Status (2)

Country Link
EP (1) EP1241272A1 (fr)
AT (1) AT410098B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108359756A (zh) * 2018-02-26 2018-08-03 西安交通大学 一种用于液态熔渣干式离心粒化及余热回收利用系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR750610A (fr) * 1932-11-12 1933-08-14 Dispositif pour boursoufler une composition en fusion (laitier) à transformer en une pierre ponce artificielle à grande porosité
DE918252C (de) * 1943-01-18 1954-09-23 Foamslag Ltd Verfahren und Vorrichtung zum Herstellen von Schaumschlacke oder schaumartigen Schmelzfluessen
DE1066124B (de) * 1959-09-24 "renoble Isere Rene Marie Berthier (Frankreich) Thermische Behandlung von Hochofenschlacke
GB1127033A (en) * 1966-06-21 1968-09-11 British Iron Steel Research Treatment of blast furnace slag
JPS5349000A (en) * 1976-10-18 1978-05-02 Kawasaki Heavy Ind Ltd Treating method for molten slag
JPS5521546A (en) * 1978-08-02 1980-02-15 Mitsubishi Heavy Ind Ltd Molten slag processing device
JPS57156346A (en) * 1981-03-20 1982-09-27 Nippon Steel Corp Manufacture of blast furnace slag grains
JPS5922645A (ja) * 1982-07-30 1984-02-04 Nippon Steel Corp 溶融スラグの造粒装置
JPS60215704A (ja) * 1984-04-11 1985-10-29 Nippon Jiryoku Senko Kk 製鋼スラグの処理方法
US5667147A (en) * 1993-12-03 1997-09-16 Holderbank Financiere Glarus Ag Process and device for granulating and crushing molten materials and grinding stocks

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066124B (de) * 1959-09-24 "renoble Isere Rene Marie Berthier (Frankreich) Thermische Behandlung von Hochofenschlacke
FR750610A (fr) * 1932-11-12 1933-08-14 Dispositif pour boursoufler une composition en fusion (laitier) à transformer en une pierre ponce artificielle à grande porosité
DE918252C (de) * 1943-01-18 1954-09-23 Foamslag Ltd Verfahren und Vorrichtung zum Herstellen von Schaumschlacke oder schaumartigen Schmelzfluessen
GB1127033A (en) * 1966-06-21 1968-09-11 British Iron Steel Research Treatment of blast furnace slag
JPS5349000A (en) * 1976-10-18 1978-05-02 Kawasaki Heavy Ind Ltd Treating method for molten slag
JPS5521546A (en) * 1978-08-02 1980-02-15 Mitsubishi Heavy Ind Ltd Molten slag processing device
JPS57156346A (en) * 1981-03-20 1982-09-27 Nippon Steel Corp Manufacture of blast furnace slag grains
JPS5922645A (ja) * 1982-07-30 1984-02-04 Nippon Steel Corp 溶融スラグの造粒装置
JPS60215704A (ja) * 1984-04-11 1985-10-29 Nippon Jiryoku Senko Kk 製鋼スラグの処理方法
US5667147A (en) * 1993-12-03 1997-09-16 Holderbank Financiere Glarus Ag Process and device for granulating and crushing molten materials and grinding stocks

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 197824, Derwent World Patents Index; Class M24, AN 1978-42810A, XP002202251 *
DATABASE WPI Section Ch Week 198244, Derwent World Patents Index; Class L02, AN 1982-94082E, XP002202260 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 050 (C - 007) 16 April 1980 (1980-04-16) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 106 (C - 223) 18 May 1984 (1984-05-18) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 078 (C - 335) 27 March 1986 (1986-03-27) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108359756A (zh) * 2018-02-26 2018-08-03 西安交通大学 一种用于液态熔渣干式离心粒化及余热回收利用系统
CN108359756B (zh) * 2018-02-26 2019-12-24 西安交通大学 一种用于液态熔渣干式离心粒化及余热回收利用系统

Also Published As

Publication number Publication date
ATA4062001A (de) 2002-06-15
AT410098B (de) 2003-01-27

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