EP0088253B1 - Vorrichtung zur Beschickung eines Schachtofens - Google Patents

Vorrichtung zur Beschickung eines Schachtofens Download PDF

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Publication number
EP0088253B1
EP0088253B1 EP83101361A EP83101361A EP0088253B1 EP 0088253 B1 EP0088253 B1 EP 0088253B1 EP 83101361 A EP83101361 A EP 83101361A EP 83101361 A EP83101361 A EP 83101361A EP 0088253 B1 EP0088253 B1 EP 0088253B1
Authority
EP
European Patent Office
Prior art keywords
fact
accordance
enclosure
bell
storage enclosure
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
Application number
EP83101361A
Other languages
English (en)
French (fr)
Other versions
EP0088253A1 (de
Inventor
Pierre Mailliet
Léon Ulveling
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
Priority to AT83101361T priority Critical patent/ATE17521T1/de
Publication of EP0088253A1 publication Critical patent/EP0088253A1/de
Application granted granted Critical
Publication of EP0088253B1 publication Critical patent/EP0088253B1/de
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/20—Arrangements of devices for charging

Definitions

  • the present invention relates to a feed installation of a shaft furnace comprising a holding hopper, a storage enclosure and a vertical feed channel opening onto a rotary or oscillating distribution chute mounted in the head of the furnace.
  • a metering device generally of the type described in US-A-4074835 and provided in the passage oblique connecting the bottom of this enclosure to the vertical supply channel above the chute.
  • the object of the present invention is to provide a new installation for supplying a shaft furnace with an axial arrangement of the storage enclosure, as well as a new metering member allowing this arrangement, that is to say say able to adjust the flow of a vertically flowing current.
  • the invention proposes a supply installation of the kind described in the preamble, which is essentially characterized in that the storage enclosure, the lower part of which is funnel-shaped, is mounted symmetrically around the central axis of the vertical feed channel and disposed directly above it, and in that there is provided a metering and sealing member, of substantially circular section, mounted symmetrically with respect to said central axis at the intersection of the bottom of the storage enclosure with the vertical channel and connected to drive means to be moved vertically between a closed position, in which said member is applied against the bottom of said enclosure, designed as a seat for this member, and an open position in which said member is more or less lifted from its seat in order to define a more or less large annular flow opening, delimited by the outer contour of said member and the lower and inner edge of the bottom of the enclosure.
  • the storage enclosure is preferably designed in the form of an airlock intended to be alternately pressurized and ventilated.
  • the metering member preferably comprises a frustoconical tip directed downwards, the vertical variation of the section of which contributes, during the vertical movement of said member, to a gradual variation of the annular opening.
  • said member is pear-shaped, with an enlarged upper part and a frustoconical point facing downwards, the intermediate part of which between the point and the upper part is designed as a shoulder intended to cooperate with said seat with a view to closing.
  • the metering member is integral with a control rod penetrating axially through the holding hopper and the storage enclosure and actuated externally using a suitable motor.
  • the metering member consists of an upper bell, the lower edge of which is used for closing and adjusting the flow and a lower bell, the edge of which serves for carrying out the sealing between the oven and the enclosure.
  • the upper bell has a hollow axial bushing traversed by the control rod of the lower bell and it rests on a shoulder of the latter by means of which it is raised and lowered.
  • This design allows not only a centralization of the fall of the loading material, but also a total elimination of the oblique passage, hitherto necessary between the storage enclosure (s) and the vertical supply channel.
  • the removal of this oblique section allows a reduction in investment costs and repair costs and allows a reduction in the height of fall of the loading material.
  • FIGS 1 and 2 schematically show the upper part of a shaft furnace 20 in which is suspended a rotary or oscillating chute 22 to ensure the distribution of the loading material discharged into the furnace.
  • This chute 22 is actuated by a suitable mechanism, in the embodiment shown, in a housing designated by 24 and intended to communicate to the chute 22-! Desired movement.
  • a vertical central channel 26 guides the material to be put into the chute 22.
  • the lower closure member 30 also serves, as will be explained in more detail with reference to the following figures, to regulate the flow of the loading material of the airlock 28 in the channel 26.
  • the airlock 28 is mounted around the central axis 0 of the oven, as is its flow pipe 33 and the closing member 30.
  • the material to be put in falls, this fact, directly from the airlock 28 and this, symmetrically with respect to the axis 0 on the trough 22.
  • the flow of material from the airlock 28 is therefore always in the same way and the problems of asymmetry of distribution consequently of an oblique and offset flow of the loading material, no longer exist.
  • the metering that is to say the control of the position of the closing member 30 to regulate the flow, is carried out according to the loading needs and according to the content in the airlock 28.
  • the weighing is carried out by means of several, preferably three load cells, not shown, on which the airlock rests, the load cells being, in turn, carried by fixed uprights forming part of the frame or superstructure of the oven.
  • the airlock 28 is a waiting hopper 34 intended to be filled, for example, by means of skips 36, while the airlock 28 is emptied.
  • the closing and retaining member 32 provided at the bottom of this hopper 34 makes it possible to establish communication between the latter and the airlock 28.
  • the section of the member 32 is preferably as large as possible.
  • Figures 1 and 2 are distinguished by the arrangement and function of the upper closure member.
  • This member is, in both embodiments, bell-shaped and serves both to establish the seal and the retention of the material in the hopper 34.
  • the member 32 evolves in the airlock 28, while in the embodiment of FIG. 2, the member 42 evolves inside the hopper 34.
  • the closed position is shown in solid lines and the open position in dashed lines.
  • the closing member 32 also performs a function of distributing the loading material in the airlock 28, which results in a loading profile in the shape of an "M" in this airlock .
  • the member 42 is raised for its opening. Since this opening must be made against the action of the weight of the material in the hopper 34, the handling of the member 42 consumes more energy than that of the member 32. In the embodiment of the figure 2, the material falls centrally in the airlock 28 with a natural discharge cone around the axis 0.
  • This closure member 30 will now be described in more detail with reference to FIGS. 3 to 5.
  • This closure member is pear-shaped and has an enlarged upper part 44 whose cross section is wider than that of the tubing. flow 33 of the airlock 28 and a conical or frustoconical lower point 46 which extends into the channel 26 in the closed position of the member 30.
  • the re-entrant edge 48 forming the transition between the part 44 and the point 46 serves as support and closure and cooperates, for this purpose, with a section 50 of the wall of the airlock 28 or of the flow pipe 33.
  • the section 50 preferably forms the transition between the airlock 28 and its flow pipe 33 and has an intermediate inclination between that of the wall of the airlock 28 and that of the wall of the pipe 33 (see more particularly FIGS. 4 and 5) . In this way the section 50 which is in fact the seat of the closure member 30 for sealing is protected from the current of the loading material sliding along the oblique wall of the airlock 28 and does not undergo friction and intense wear of the load material.
  • FIG. 4 illustrates an intermediate opening position.
  • the particular frustoconical shape of the tip 46 allows a fine and progressive metering between the closed position according to FIG. 3 and the maximum flow allowed in the position according to FIG. 5.
  • the fall of the material takes place. produced by the center of the channel 26, along the axis 0, so that the impact of the loading material on the chute 22 is always the same, regardless of the position thereof and the flow rate of the flow.
  • FIGS. 6 and 8 show a second embodiment of a lower closure member which is characterized by a separation of the sealing functions, on the one hand, and the closing and metering functions, on the other hand.
  • This member 60 comprises an upper bell 62, the beveled edge of which rests, in the closed position (FIGS. 6 and 7) on a seat 64 forming part of the wall of the airlock 28 of which it constitutes the flow opening and a lower element.
  • 66 in the form of a bell or mushroom independent of the upper bell 62.
  • This element 66 consists of a sort of plate 66a, the edge of which also cooperates with the seat 64 for the purpose of sealing and a conical tip. or frustoconical 66b having the same shapes and functions as the tip 46 of the first embodiment.
  • the element 66 is integral with an axial control rod 68, actuated from the outside, for example, by means of a hydraulic cylinder.
  • the bell 62 comprises a hollow socket 70 coaxially surrounding the lower part of the control rod 68.
  • FIGS. 6, 7 and 8 The opening and closing of the bell 62 are carried out under the action of the vertical displacement of the element 66 and the operation is clear from FIGS. 6, 7 and 8.
  • the plate 66a is closed in a sealed manner , while the bell 62 also rests on the seat 64 and retains the loading material.
  • the edge of the plate 66a which cooperates with the seat 64 to achieve the seal, is permanently protected from contact with the loading material. Indeed, during the movement between the two positions illustrated in Figures 7 and 8, the plate 66a is always protected by the bell 62, while during the movement between the positions illustrated in Figures 6 and 7, or vice versa, the bell 62 rests on its seat 64 and prevents flow. It is therefore possible to provide on the edge of the plate 66a, a seal 72 made of soft material.
  • the portion 64a of the seat 64 which is intended to cooperate with the seal 72, is also inclined more than the rest of the seat 64 so as to be protected from the material of loading when it slides into channel 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Claims (10)

1. Vorrichtung zur Beschickung eines Schachtofens, die einen Aufnahmetrichter (34), einen Vorratsraum (28) und eine vertikale Zuführungsleitung (26) aufweist, die in eine drehbare oder schwingende Verteilungsschurre (22) mündet, die am Ofenkopf (20) angebrscht ist, dadurch gekennzeichnet, daß der Vorratsraum (28), dessen unterer Teil trichterförmig ist, symmetrisch um die zentrale Achse (0) der vertikalen Zuführungsleitung (26) gelagert und direkt oberhalb jener angeordnet ist, und dadurch, daß eine Dosier- und Dichtungseinrichtung (30, 60) von annähernd kreisförmigem Querschnitt vorgesehen ist, die symmetrisch in Bezug auf besagte zentrale Achse (0) am Niveau des Schnittpunktes des Bodens des Vorratsraumes (28) mit der vertikalen Leitung angeordnet und mit Antriebsmitteln verbunden ist, um vertikal zwischen einer Verschlußposition, in welcher besagte Einrichtung (30, 60) gegen den Boden besagten Raumes (28), der als Sitz für diese Einrichtung (30, 60) ausgebildet ist, aufgesetzt ist, und einer Öffnungsposition versetzt zu werden, in welcher besagte Einrichtung (30, 60) mehr oder weniger von ihrem Sitz (50, 64) angehoben ist, um eine mehr- oder weniger große ringförmige Ausfließöffnung zu begrenzen, die durch die äußere Kontur besagter Einrichtung (30, 60) und den unteren und inneren Rand des Bodens des Raumes (28) abgegrenzt ist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Vorratsraum (28) in Form einer Schleusenkammer ausgebildet ist, die bestimmt ist, alternativ ausgesaugt und belüftet zu werden.
3. Vorrichtung gemäß einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Dosiereinrichtung (30, 60) eine konische oder kegelstumpfartige Spitze (46, 66b) aufweist, die nach unten gerichtet ist, deren vertikale Querschnittsvariation während der Vertikalbewegung besagter Einrichtung (30, 60) zu einer progressiven Veränderung der ringförmigen Ausfließöffnung beiträgt.
4. Vorrichtung gemäß dem Anspruch 3, dadurch gekennzeichnet, daß besagte Einrichtung (30) birnenförmig, ist, mit einem oberen erweiterten Teil (44) und einer konischen oder kegelstumpfartigen Spitze (46), die nach unten gerichtet ist, und deren zwischen der Spitze (46) und dem oberen Teil (44) gelegener Bereich als Absatz (48) ausgebildet ist, der dafür bestimmt ist, um mit besagtem Sitz (50) zum Zweck des Verschließens zusammenzuwirken.
5. Vorrichtung gemäß Anspruch 4, dadurch gekennzeichnet, daß die Dosiereinrichtung (30) mit einer Steuerstange (52) verbunden ist, die achsial den Aufnahmetrichter (34) und den Vorratsraum (28) durchsetzt und mit Hilfe eines geeigneten Motors angetrieben ist.
6. Vorrichtung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Dosiereinrichtung (60) aus einer oberen Glocke (62), deren unterer Rand dem Verschließen und Regeln des Ausfließens dient, und einer unteren Glocke (66), deren Rand der Herstellung der Dichtheit zwischen dem Ofen (20) und dem Raum (28) dient, gebildet ist.
7. Vorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, daß die untere Glocke (66) mit einer Steuerstange (68) verbunden ist, die achsial den Aufnahmetrichter (34) und den Vorratsraum (28) durchsetzt und mit Hilfe eines geeigneten Motors außerhalb angetrieben ist.
8. Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, daß die obere Glocke (62) eine achsiale hohle Hülse (70) aufweist, die von der Steuerstange (68) der unteren Glocke (66) durchsetzt ist, und dadurch, daß sie bei ihrer Betätigung auf einem Bund derjenigen ruht, mittels der sie angehoben oder abgesenkt wird.
9. Vorrichtung gemäß Anspruch 6, gekennzeichnet durch ein Dichtungsstück (72), aus weichem Material, das am Rand der unteren Glocke (66) vorgesehen ist.
10. Vorrichtung gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Sitz (50, 64) der Einrichtung (30, 60) einen Abschnitt aufweist, dessen Neigung größer ist als jener des unteren Teiles in Form eines Trichters des Raumes (28).
EP83101361A 1982-03-10 1983-02-12 Vorrichtung zur Beschickung eines Schachtofens Expired EP0088253B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101361T ATE17521T1 (de) 1982-03-10 1983-02-12 Vorrichtung zur beschickung eines schachtofens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84000 1982-03-10
LU84000A LU84000A1 (fr) 1982-03-10 1982-03-10 Installation d'alimentation d'un four a cuve

Publications (2)

Publication Number Publication Date
EP0088253A1 EP0088253A1 (de) 1983-09-14
EP0088253B1 true EP0088253B1 (de) 1986-01-15

Family

ID=19729832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101361A Expired EP0088253B1 (de) 1982-03-10 1983-02-12 Vorrichtung zur Beschickung eines Schachtofens

Country Status (9)

Country Link
US (1) US4512702A (de)
EP (1) EP0088253B1 (de)
JP (2) JPS58167705A (de)
AT (1) ATE17521T1 (de)
CA (1) CA1209800A (de)
CS (1) CS235037B2 (de)
DE (1) DE3361813D1 (de)
IN (1) IN159019B (de)
LU (1) LU84000A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU585432B2 (en) * 1986-03-04 1989-06-15 Paul Wurth S.A. Installation for charging a shaft furnace
FR2638825A1 (fr) * 1988-11-09 1990-05-11 Wurth Paul Sa Installation de chargement d'un four a cuve
EP0613955A1 (de) * 1993-03-04 1994-09-07 Paul Wurth S.A. Beschickungsvorrichtung mit einem Mengenregelungsorgan
TR26694A (tr) * 1991-05-25 1995-05-15 Bayer Ag SüBSTITüE EDILMIS 4-HETARIL-PIRAZOLINLER
DE4404315C2 (de) * 1993-03-04 2002-11-28 Wurth Paul Sa Beschickungsvorrichtung für einen unter Druck stehenden Schachtofen

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276908A (ja) * 1985-05-30 1986-12-06 Ishikawajima Harima Heavy Ind Co Ltd 溶鉱炉炉頂装入装置に於ける原料分配調整装置
LU88494A1 (fr) * 1994-06-08 1996-02-01 Wurth Paul Sa Dispositif de chargement à goulotte rotative pour un four à cuve
SE507247C2 (sv) * 1996-03-29 1998-04-27 Ssab Oxeloesund Ab Beskickningsanordning för en masugn
GB2405632B (en) * 2003-09-03 2006-02-22 Ivan Semenenko Improvements in or relating to closure assemblies for stores of flowable material
US7228956B2 (en) * 2005-01-10 2007-06-12 Benetech, Inc. Bulk material precision transfer chute apparatus
RU2279484C1 (ru) * 2005-02-07 2006-07-10 Общество С Ограниченной Ответственностью "Исследовательско-Технологический Центр "Аусферр" Устройство для подачи компонентов при прямом легировании стали
DE102005007519B3 (de) * 2005-02-17 2006-10-19 Hermanns Silo Gmbh Absperrventil
US8393281B1 (en) * 2008-02-27 2013-03-12 University Of Mississippi Particle feeder
LU91525B1 (en) 2009-02-11 2010-08-12 Wurth Paul Sa Method and system for adjusting the flow rate of charge material in a charging process of a shaft furnace
LU91526B1 (en) 2009-02-11 2010-08-12 Wurth Paul Sa Method and system for adjusting the flow rate of charge material in a charging process of a shaft furnace
WO2014084804A1 (ru) * 2012-11-30 2014-06-05 Tarasov Vladimir Petrovich Устройство для загрузки доменной шихты
CN106044297A (zh) * 2016-08-02 2016-10-26 扬中灵平风机制造有限公司 一种无动力粮食分料器
GB201709995D0 (en) * 2017-06-22 2017-08-09 Matcon Ltd Material discharge apparatus
CN112029945A (zh) * 2020-09-03 2020-12-04 赫章县黎明矿业有限公司 一种新型有烟煤焙烧菱铁矿的竖炉

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US127214A (en) * 1872-05-28 Improvement in hoppers for blast-furnaces
BE518512A (de) *
US908594A (en) * 1907-08-05 1909-01-05 William Clark Mitchell Apparatus for charging and distributing the stock in blast-furnaces, &c.
US2667278A (en) * 1952-01-09 1954-01-26 Tesch Erik Torsten Anderson Apparatus for charging shaft furnaces
US3476374A (en) * 1967-06-06 1969-11-04 United States Steel Corp Apparatus for charging a blast furnace continuously
DE1758479B1 (de) * 1968-06-10 1971-02-25 Inland Steel Co Beschickungsvorrichtung fuer mit UEberdruck arbeitende Vorrichtungen,insbesondere fuer Hochoefen
LU64909A1 (de) * 1972-03-06 1972-07-06
JPS49104804A (de) * 1973-02-09 1974-10-03
LU72956A1 (de) * 1975-07-11 1976-02-04
JPS5222725A (en) * 1975-08-14 1977-02-21 Matsushita Electric Ind Co Ltd Manganese dioxide electrode for battery
LU74505A1 (de) * 1976-03-08 1976-09-01
LU80646A1 (fr) * 1978-12-12 1979-04-13 Wurth Anciens Ets Paul Dispositif de chargement d'un four a cuve
LU82840A1 (fr) * 1980-10-10 1981-02-02 Wurth Anciens Ets Paul Perfectionnements aux installations d'alimentation des fours a cuve a gueulard sans cloche

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU585432B2 (en) * 1986-03-04 1989-06-15 Paul Wurth S.A. Installation for charging a shaft furnace
FR2638825A1 (fr) * 1988-11-09 1990-05-11 Wurth Paul Sa Installation de chargement d'un four a cuve
TR26694A (tr) * 1991-05-25 1995-05-15 Bayer Ag SüBSTITüE EDILMIS 4-HETARIL-PIRAZOLINLER
EP0613955A1 (de) * 1993-03-04 1994-09-07 Paul Wurth S.A. Beschickungsvorrichtung mit einem Mengenregelungsorgan
US5411242A (en) * 1993-03-04 1995-05-02 Paul Wurth S.A. Charging device with member for regulating the flow rate
TR27694A (tr) * 1993-03-04 1995-06-19 Wurth Paul Sa Akis hizini düzenleyen komponenti haiz dolum düzenegi.
DE4404315C2 (de) * 1993-03-04 2002-11-28 Wurth Paul Sa Beschickungsvorrichtung für einen unter Druck stehenden Schachtofen

Also Published As

Publication number Publication date
JPH0516201Y2 (de) 1993-04-28
JPS58167705A (ja) 1983-10-04
US4512702A (en) 1985-04-23
ATE17521T1 (de) 1986-02-15
CS235037B2 (en) 1985-04-16
DE3361813D1 (en) 1986-02-27
JPH04106345U (ja) 1992-09-14
LU84000A1 (fr) 1983-11-17
CA1209800A (en) 1986-08-19
EP0088253A1 (de) 1983-09-14
IN159019B (de) 1987-03-07

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