EP0054130A1 - Tambour rotatif à projection pour laitier métallurgique - Google Patents

Tambour rotatif à projection pour laitier métallurgique Download PDF

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Publication number
EP0054130A1
EP0054130A1 EP81108576A EP81108576A EP0054130A1 EP 0054130 A1 EP0054130 A1 EP 0054130A1 EP 81108576 A EP81108576 A EP 81108576A EP 81108576 A EP81108576 A EP 81108576A EP 0054130 A1 EP0054130 A1 EP 0054130A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal drum
drum according
cooling
chambers
slag
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.)
Granted
Application number
EP81108576A
Other languages
German (de)
English (en)
Other versions
EP0054130B1 (fr
Inventor
Clément Burton
André Kremer
Hubert Stomp
Marc Solvi
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0054130A1 publication Critical patent/EP0054130A1/fr
Application granted granted Critical
Publication of EP0054130B1 publication Critical patent/EP0054130B1/fr
Expired 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
    • C21B2400/026—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
    • C21B2400/052—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
    • C21B2400/056—Drums whereby slag is poured on or in between

Definitions

  • the invention relates to a centrifugal drum for metallurgical slag, in particular for liquid blast furnace slag for producing slag sand or pumice.
  • a known possibility of processing the liquid slag consists in mechanical blow and spin treatment.
  • a system of this type is described in more detail in Belgian Patent No. 847,483.
  • This patent proposes a method and a production plant for foamed slag, in which a mechanical treatment of a metallurgical slag stream is carried out with the aid of a rotating drum, the liquid slag being first subjected to swelling by supplying water. The slag that then falls down onto the drum is torn apart by transverse bars attached to the drum and flung away in an arc.
  • a major problem in systems with centrifugal drums are the downtimes, particularly in the area of the blow bars, with which the drum casing is provided.
  • the drum itself is water-cooled from the inside and the strips may also be provided with cavities for water circulation, this cooling has so far not been able to be carried out specifically and intensely enough to prevent destruction, in particular of the blow bar weld seams, within the shortest possible time.
  • the lifespan of the well-known processing drums of only approx. 10,000 tons of slag.
  • the drum jacket In order to avoid air pockets and circulation congestion in the cooling channels, the drum jacket also had to be provided with openings through which the cooling water can escape in order to be thrown away with the slag.
  • the disadvantage here is that this addition of water, which is indispensable for cooling, also enters the slag treatment process and, as noted above, is not necessarily desirable due to its influence on the quality of the resulting product, at least not in such quantities as for the Cooling the drum are necessary.
  • a centrifugal drum of the type mentioned at the outset characterized in that the outer jacket consists of cooling tubes which run closely together in the axial direction and which on one side has a distribution chamber with a cooling water inlet and on the opposite side has a collector chamber with a Water outlet are connected.
  • blow bars Distributed over the drum circumference, a number of blow bars can furthermore advantageously be provided, which are arranged between the pipes and welded to these and an inner drum jacket, and which are also provided with axial cooling channels for intensive water circulation.
  • the drum is carried by two lateral outer flanges 14, 16, which are firmly connected to two hubs 6, 8. These two hubs are provided with internal, preferably axial bores 10, 12 for the supply or removal of cooling water.
  • the outer flanges 14, 16 are welded to an inner flange 15 and 19 via a cylindrical intermediate piece 13 and 17, respectively, and form with them a distribution chamber 28 and a collector chamber 30 for the cooling water.
  • the drum shell consists of a number of cooling tubes 20, 22 welded to one another in the longitudinal direction, which connect the distributor chamber 28 to the collector chamber.
  • the drum casing is preferably carried by an inner fixed casing 18 which is welded to the inner flanges 15, 19 on both sides.
  • a number of radial blow bars 26 are attached to the drum jacket 24 to intensify the impact and centrifugal effect. These blow bars 26 are also cooled and, as shown in FIG. 2, can consist of approximately rectangular bars with cooling channels 32. ; But you can also as a further development of the invention from individual, e.g. there are three cooling tubes lying one above the other in the radial direction and welded to one another. The cooling channels 32 or the welded-together cooling tubes of the blow bars 26 are also connected to the two chambers 28 and 30.
  • the bores 120, 122 (see FIG. 3) for receiving the cooling tubes 20, 22 in the flanges 15, 19 are preferably radially offset. This prevents the bores 120, 122 form an annular interruption in the flanges.
  • the associated cooling tubes 22 are bent radially on both sides accordingly (see FIG. 1).
  • the flanges 15, 19 also have cutouts 34 (see FIG. 3) for receiving the blow bars 26.
  • FIG. 2 shows how the cooling tubes 20, 22 are welded to one another and to the inner jacket 18, and the strips 26 are welded to this jacket 18 and the cooling tubes 20, 22. It can be seen that the most vulnerable weld seams, that is those between the inner jacket 18 and the strips 26, i.e. the seams 36 are in an intensely cooled area.
  • Driver elements are provided which immediately force the water on entering the chamber 28 through the bore 10 at the same rotational speed as that of the drum.
  • These driver elements can, in a simple manner, as indicated by dashed lines in FIG. 3, consist of radial blades 40 which are welded to the flanges 14 and 15 on both sides. Similar measures can be taken in the collector chamber.
  • the chambers 28, 30 are provided with ventilation plugs 38, 40, in order to remove air pockets, particularly before the drum is started up for the first time, which could impair the cooling water circulation and, if necessary, serve as drain plugs.
  • the proposed centrifugal drum design permits very intensive cooling of the parts at risk, since the entire cooling water throughput takes place specifically at the periphery of the drum. There are no more air pockets in the parts to be cooled and the cooling water is evenly distributed over the drum circumference.
  • the cooling device according to the invention also has a positive influence on the treatment process itself in the sense that the cooling water is no longer thrown out of the drum jacket and thus adversely affects the treatment process of the slag.
  • the slag can, as desired, be cooled by air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP81108576A 1980-12-12 1981-10-20 Tambour rotatif à projection pour laitier métallurgique Expired EP0054130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83000 1980-12-12
LU83000A LU83000A1 (de) 1980-12-12 1980-12-12 Schleudertrommel fuer metallurgische schlacke

Publications (2)

Publication Number Publication Date
EP0054130A1 true EP0054130A1 (fr) 1982-06-23
EP0054130B1 EP0054130B1 (fr) 1985-01-16

Family

ID=19729544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108576A Expired EP0054130B1 (fr) 1980-12-12 1981-10-20 Tambour rotatif à projection pour laitier métallurgique

Country Status (5)

Country Link
US (1) US4492342A (fr)
EP (1) EP0054130B1 (fr)
CA (1) CA1177646A (fr)
DE (1) DE3168375D1 (fr)
LU (1) LU83000A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110093463A (zh) * 2019-05-31 2019-08-06 安徽中巨机电设备有限公司 一种钢渣回收处理系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113877697B (zh) * 2021-10-12 2023-02-24 东北大学 一种熔体撞击破碎粒化系统及方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE229560C (fr) *
DE257089C (fr) * 1900-01-01
CH35751A (de) * 1906-02-23 1906-10-15 Colloseus Dr Heinrich Apparat zum Zerstäuben von feuerflüssiger Hochofenschlacke
US3310391A (en) * 1962-08-31 1967-03-21 Flex O Lite Mfg Corp Method of and apparatus for production of glass beads by use of a rotating wheel
DE1927196A1 (de) * 1968-06-05 1969-12-11 Nat Slag Ltd Verfahren und Vorrichtung zur Pelletisierung,insbesondere von Hochotenschlacke
BE847483A (fr) * 1975-10-21 1977-02-14 Procede de fabrication de laitier expanse,
AT337222B (de) * 1973-01-12 1977-06-27 Nat Slag Ltd Vorrichtung zur pelletisierung von geschmolzenem material, insbesondere hochofenschlacke
US4050884A (en) * 1976-03-04 1977-09-27 Richard Jablin Slag waste heat boiler
JPS53100990A (en) * 1977-02-15 1978-09-02 Ishikawajima Harima Heavy Ind Co Ltd Inner wall cooling apparatus for rotary drum
LU77160A1 (fr) * 1977-04-19 1979-01-18
FR2406377A7 (fr) * 1977-10-13 1979-05-11 Nakayama Steel Works Ltd Procede et installation pour la fabrication de sable broye a partir des scories de hauts fourneaux traitees a l'eau

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35751C (de) * J. GOTTLOB und J. MAUS in Köln, vor den Siebenburgen Nr. 3 Kühlapparat mit spiralförmiger Rinnenpfanne
DE337222C (de) * 1920-04-28 1921-05-27 Erich Tschimpke Taschenlampen- und Handlampenbatterie
US2792042A (en) * 1956-02-14 1957-05-14 Richard M Dwyer Meat grinders
JPS5113087B1 (fr) * 1971-07-12 1976-04-24
CH566167A5 (fr) * 1973-09-28 1975-09-15 Bicik Vladislav

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE229560C (fr) *
DE257089C (fr) * 1900-01-01
CH35751A (de) * 1906-02-23 1906-10-15 Colloseus Dr Heinrich Apparat zum Zerstäuben von feuerflüssiger Hochofenschlacke
US3310391A (en) * 1962-08-31 1967-03-21 Flex O Lite Mfg Corp Method of and apparatus for production of glass beads by use of a rotating wheel
DE1927196A1 (de) * 1968-06-05 1969-12-11 Nat Slag Ltd Verfahren und Vorrichtung zur Pelletisierung,insbesondere von Hochotenschlacke
AT337222B (de) * 1973-01-12 1977-06-27 Nat Slag Ltd Vorrichtung zur pelletisierung von geschmolzenem material, insbesondere hochofenschlacke
DE2554087A1 (de) * 1975-10-21 1977-04-28 Arbed Verfahren zur herstellung geschaeumter schlacke
BE847483A (fr) * 1975-10-21 1977-02-14 Procede de fabrication de laitier expanse,
US4050884A (en) * 1976-03-04 1977-09-27 Richard Jablin Slag waste heat boiler
JPS53100990A (en) * 1977-02-15 1978-09-02 Ishikawajima Harima Heavy Ind Co Ltd Inner wall cooling apparatus for rotary drum
LU77160A1 (fr) * 1977-04-19 1979-01-18
US4171965A (en) * 1977-04-19 1979-10-23 Arbed - Acieries Reunies De Burbach-Eich-Dudelange S.A. Method of making granulated slag
FR2406377A7 (fr) * 1977-10-13 1979-05-11 Nakayama Steel Works Ltd Procede et installation pour la fabrication de sable broye a partir des scories de hauts fourneaux traitees a l'eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN Band 2, Nr. 136, 11. November 1978 seite 2910C78 & JP - A - 53 - 100990 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110093463A (zh) * 2019-05-31 2019-08-06 安徽中巨机电设备有限公司 一种钢渣回收处理系统

Also Published As

Publication number Publication date
CA1177646A (fr) 1984-11-13
LU83000A1 (de) 1982-07-07
DE3168375D1 (en) 1985-02-28
EP0054130B1 (fr) 1985-01-16
US4492342A (en) 1985-01-08

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