EP0215135A1 - Shaft furnace charging device - Google Patents

Shaft furnace charging device Download PDF

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Publication number
EP0215135A1
EP0215135A1 EP85110485A EP85110485A EP0215135A1 EP 0215135 A1 EP0215135 A1 EP 0215135A1 EP 85110485 A EP85110485 A EP 85110485A EP 85110485 A EP85110485 A EP 85110485A EP 0215135 A1 EP0215135 A1 EP 0215135A1
Authority
EP
European Patent Office
Prior art keywords
bulk material
shaft
plate
furnace
furnace shaft
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
EP85110485A
Other languages
German (de)
French (fr)
Other versions
EP0215135B1 (en
Inventor
Ulrich Dipl.-Ing. Beckenbach
Helmuth Dipl.-Kfm. Beckenbach
Werner Hergarten
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.)
WARMESTELLE STEINE und ERDEN GmbH
Steine & Erden GmbH
Warmestelle Steine und Erden GmbH
Original Assignee
WARMESTELLE STEINE und ERDEN GmbH
Steine & Erden GmbH
Warmestelle Steine und Erden 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 WARMESTELLE STEINE und ERDEN GmbH, Steine & Erden GmbH, Warmestelle Steine und Erden GmbH filed Critical WARMESTELLE STEINE und ERDEN GmbH
Priority to EP85110485A priority Critical patent/EP0215135B1/en
Priority to DE8585110485T priority patent/DE3584894D1/en
Priority to AT85110485T priority patent/ATE70313T1/en
Priority to CA000516435A priority patent/CA1306606C/en
Publication of EP0215135A1 publication Critical patent/EP0215135A1/en
Priority to US07/122,585 priority patent/US4767322A/en
Application granted granted Critical
Publication of EP0215135B1 publication Critical patent/EP0215135B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F27D2003/0007—Circular distribution

Definitions

  • the invention relates to a device for loading a shaft furnace for burning and sintering lumpy material, such as limestone, dolomite, magnesite or the like, with granular bulk material, with a top silo arranged above the essentially circular cross-section of the furnace shaft with essentially homogeneously mixed bulk material and one Gout silo outlet for feeding the bulk material onto the surface to be covered of the bulk material column located in the furnace shaft in a distribution that can be controlled via the shaft diameter.
  • lumpy material such as limestone, dolomite, magnesite or the like
  • the invention is therefore based on the object of providing a device of the type mentioned at the outset, which makes it possible in a simple manner to feed the bulk material to be input in the desired distribution over the furnace shaft diameter.
  • this object is achieved in a device of the type mentioned at the outset by an essentially circular plate arranged at a distance below the gas silo outlet, the diameter of which is smaller than the inner diameter of the furnace shaft and larger than the diameter of the outlet opening of the gas silo outlet; and a ring box or the like which can be rotated concentrically to the plate and to which a number of wipers projecting into the bulk material which is sloping on the plate are attached, to which guide slides or the like each ending with their outlet at different distances from the longitudinal center axis of the furnace shaft are permanently assigned .
  • a particularly preferred embodiment of the invention provides that the plate is arranged in a preferably horizontally aligned position.
  • the ring box is controlled by an electric motor or the like, drivable - is _ bar.
  • Another embodiment of the invention is characterized in that the immersion depth of at least one of the wipers in the bulk material located on the plate is adjustable.
  • the invention also proposes, if necessary, that at least one of the guide chutes runs obliquely downwards from the plate or ring box towards the inner wall of the furnace shaft and at least one of the guide chutes runs towards the rest of the surface to be covered.
  • the guide chutes end at a distance above the upper edge of the furnace shaft.
  • Another embodiment of the invention is characterized in that the outlets of the chutes in WE - sentlichen in a horizontal plane.
  • the wipers consist of essentially vertically arranged plates, preferably of sheet metal or the like.
  • the invention also proposes, if necessary, that the wipers from a circumferential point of the ring box located behind the respective guide chute, viewed in the direction of rotation of the ring box, under one of the radius protrude direction rejecting angle up to a position in the bulk material, which is circumferentially within the range of the respective guide chute.
  • the substantially horizontally arranged circular plate is provided below the gout silo outlet in the device according to the invention, the distance of which can be adapted to the grain size of the entire bulk material, can prevent any unwanted outflow of the bulk material from the gout silo with appropriate dimensioning of the plate .
  • the wipers which are evenly distributed around the circumference of the rotating ring box, protrude into the loose material of the bulk material embankment on the plate and the number of which corresponds to the number of circular rings described above and the remaining area, take on rotation of the ring box, whose speed of rotation can be adjusted , equal amounts of material from the plate and the table formed by it and direct the respective bulk material to the respectively assigned guide chute.
  • the guide chutes and the wipers are firmly connected to the ring box and rotate with it.
  • the number of guide chutes and the wipers is the same, with one guide chute being assigned to one wiper.
  • the number of scrapers and guide chutes is equal to the number of circular rings to be covered and the remaining surface of the bulk material surface in the furnace head, the number of circular rings in question depending on the requirement, for example four, but also more or less.
  • Each guide chute is designed in such a way that its outlet sweeps over the associated ring or the remaining surface of the bulk material surface in the furnace head.
  • the already homogeneously mixed bulk material 2 which is constantly offered from a top silo 1 above the shaft furnace, is distributed uniformly in the upper part of the furnace onto a surface 3 with a circular cross section.
  • the circular surface 3 to be covered of the bulk material in the furnace head is in several circular rings 4, 5, 6, 7, each with the same cross-sectional area divided, that is to say into ring surfaces, and an inevitably resulting, centrally arranged residual surface 8 with a circular cross-section, each of the ring surfaces 4, 5, 6, 7 and the residual surface 8 each being assigned the same bulk quantities.
  • a circular plate 10 is arranged horizontally at a distance below a gas silo outlet 9.
  • Wipers 11, which protrude into the bulk material 2 loosely sloping on the plate 10, are fixedly mounted on a rotatable ring box 12, wherein the wipers 11 consist of vertically arranged metal plates, which in the manner shown in FIG. 2 under one of the radius direction protrude different angles into the bulk material 2 so that their ends projecting in the direction of the longitudinal central axis of the shaft furnace lie within that circumferential region of the ring box 12, via which each of the wipers 11 associated guide chutes 14 lead away obliquely downwards from the circumferential edge of the plate 10.
  • the wipers 11 are evenly distributed on the circumference of the ring box 12, their number corresponding to the number of circular rings 4, 5, 6 and 7 and the remaining surface 8.
  • the guide chutes 14 in turn end at their respective outlet above the surface 3 to be occupied at a different distance from the longitudinal central axis of the furnace, with one of the guide chutes 14 thus running out above each of the circular rings 4, 5, 6, 7 or the remaining surface 8.
  • the guide chutes 14 are of course firmly connected to the ring box 12, the number of guide chutes 14 and the wipers 11 being the same.
  • the wipers 11 remove the same amount of material from the plate 10 and guide the bulk material in question to the respectively assigned guide chute 14, which then passes the material to the respective circular ring 4, 5, 6, 7 or the remaining surface 8 respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Blast Furnaces (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Furnace Details (AREA)

Abstract

Apparatus for charging a shaft furnace for calcining and sintering material in lump form, such as limestone, dolomite, magnesite or the like, with granular bulk material, with a charging silo arranged above the furnace shaft having a substantially circular cross-section with a substantially homogeneously mixed bulk material and a charging bunker outlet for supplying the bulk material onto the surface of the bulk material column to be covered in the furnace shaft in a distribution controllable over the shaft diameter, characterized by a substantially circular plate arranged in spaced manner below the charging bunker outlet and whose diameter is smaller than the internal diameter of the furnace shaft and larger than the diameter of the opening of the charging bunker outlet and a rotary ring box or the like concentric to the plate and to which is fitted a plurality of strippers which penetrate the sloping bulk material in the plate and with each of the strippers is associated in fixed manner one of the guide chutes or the like terminating at different distances from the median longitudinal axis of the furnace shaft.

Description

Die Erfindung betrifft eine Vorrichtung zum Beschicken eines Schachtofens zum Brennen und Sintern von stückigem Gut, wie Kalkstein, Dolomit, Magnesit oder dergleichen, mit körnigem Schüttgut, mit einem oberhalb des im wesentlichen kreisförmigen Querschnitt aufweisenden Ofenschachtes angeordneten Gichtsilo mit im wesentlichen homogen gemischtem Schüttgut und einem Gichtsiloauslauf zum Aufgeben des Schüttgutes auf die zu belegende Oberfläche der im Ofenschacht befindlichen Schüttgutsäule in über den Schachtdurchmesser steuerbarer Verteilung.The invention relates to a device for loading a shaft furnace for burning and sintering lumpy material, such as limestone, dolomite, magnesite or the like, with granular bulk material, with a top silo arranged above the essentially circular cross-section of the furnace shaft with essentially homogeneously mixed bulk material and one Gout silo outlet for feeding the bulk material onto the surface to be covered of the bulk material column located in the furnace shaft in a distribution that can be controlled via the shaft diameter.

Das Aufgeben von Schüttgut in der vorstehend beschriebenen Art in einen Schachtofen zur thermischen Behandlung von stückigem Gut, wie Kalkstein, Dolomit, Magnesit oder dergleichen, insbesondere von zu brennendem Kalkstein oder dergleichen, auf die zu belegende Oberfläche der im Ofenschacht befindlichen Gutsäule bringt insofern Probleme mit sich, als die gleichmäßige Verteilung des aus dem Gichtsilo über dem Ofen ständig angebotenen, bereits homogen gemischten Schüttgutes im Ofenoberteil über den gesamten Schachtdurchmesser infolge der unvermeidbaren Schüttgutabböschung nur schwierig zu bewerkstelligen ist. Bekannt sind für diesen Zweck bereits verhältnismäßig komplizierte Anordnungen, beispielsweise in Form von Beschickungsglocken unterschiedlichen Durchmessers, wobei es aber immer noch nicht befriedigend gelingt, die zu belegende kreisförmige Oberfläche des Schüttgutes bzw. der Gutsäule im Ofenkopf insbesondere dann in der gewünschten Weise gleichmäßig mit nachrutschendem Schüttgut zu belegen, daß die zu belegende Oberfläche in mehrere Kreisringe mit jeweils gleicher Querschnittsfläche aufgeteilt ist, also in Ringflächen und eine sich zwangsläufig ergebende, zentrisch angeordnete Restfläche mit kreisförmigem Querschnitt, denen jeweils eine gleich große Materialmenge zugeteilt werden muß.The placing of bulk material in the manner described above in a shaft furnace for the thermal treatment of lumpy material, such as limestone, dolomite, magnesite or the like, in particular limestone or the like to be burned, on the surface to be covered of the column of material located in the furnace shaft brings problems with this as the even distribution of what is already homogeneously mixed from the gout silo above the furnace Bulk material in the furnace top over the entire shaft diameter is difficult to manage due to the unavoidable bulk material slope. For this purpose, relatively complicated arrangements are already known, for example in the form of charging bells of different diameters, but it is still unsatisfactory to uniformly cover the circular surface of the bulk material or the column of material in the furnace head in the desired manner with slipping bulk material to prove that the surface to be covered is divided into several circular rings, each with the same cross-sectional area, i.e. into ring surfaces and an inevitably resulting, centrally arranged residual area with a circular cross-section, each of which must be allocated an equal amount of material.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die es ermöglicht, auf einfache Weise das einzugebende Schüttgut in gewünschter Verteilung über den Ofenschachtdurchmesser zuzuführen.The invention is therefore based on the object of providing a device of the type mentioned at the outset, which makes it possible in a simple manner to feed the bulk material to be input in the desired distribution over the furnace shaft diameter.

Erfindungsgemäß wird diese Aufgabe bei einer Vorrichtung der eingangs genannten Art gelöst durch eine mit Abstand unterhalb des Gichtsiloauslaufes angeordnete, im wesentlichen kreisförmige Platte, deren Durchmesser kleiner ist als der Innendurchmesser des Ofenschachtes und größer als der Durchmesser der Auslaßöffnung des Gichtsiloauslaufes; und einen konzentrisch zu der Platte drehbaren Ringkasten oder dergleichen, an dem eine Anzahl von in das auf der Platte sich abböschende Schüttgut hineinragenden Abstreifern angebracht ist, denen jeweils mit ihrem Auslaß in unterschiedlichem Abstand von der Längsmittelachse des Ofenschachtes endende Leitrutschen oder dergleichen, fest zugeordnet sind.According to the invention, this object is achieved in a device of the type mentioned at the outset by an essentially circular plate arranged at a distance below the gas silo outlet, the diameter of which is smaller than the inner diameter of the furnace shaft and larger than the diameter of the outlet opening of the gas silo outlet; and a ring box or the like which can be rotated concentrically to the plate and to which a number of wipers projecting into the bulk material which is sloping on the plate are attached, to which guide slides or the like each ending with their outlet at different distances from the longitudinal center axis of the furnace shaft are permanently assigned .

Eine besonders bevorzugte Ausführungsform der Erfindung sieht vor, daß die Platte in vorzugsweise horizontal ausgerichteterLage angeordnet ist.A particularly preferred embodiment of the invention provides that the plate is arranged in a preferably horizontally aligned position.

Auch kann vorgesehen sein, daß der Ringkasten gesteuert mittels eines Elektromotors oder dergleichen, antreib- _ bar ist.Also may be provided that the ring box is controlled by an electric motor or the like, drivable - is _ bar.

Eine weitere Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß die Eintauchtiefe wenigstens eines der Abstreifer in das auf der Platte befindliche Schüttgut einstellbar ist.Another embodiment of the invention is characterized in that the immersion depth of at least one of the wipers in the bulk material located on the plate is adjustable.

Die Erfindung schlägt weiterhin gegebenenfalls vor, daß wenigstens eine der Leitrutschen von der Platte bzw. dem Ringkasten aus nach schräg unten in Richtung auf die Innenwandung des Ofenschachtes und wenigstens eine der Leitrutschen in Richtung auf die restliche zu belegende Oberfläche verläuft.The invention also proposes, if necessary, that at least one of the guide chutes runs obliquely downwards from the plate or ring box towards the inner wall of the furnace shaft and at least one of the guide chutes runs towards the rest of the surface to be covered.

Auch kann erfindungsgemäß vorgesehen sein, daß die Leitrutschen mit Abstand oberhalb des oberen Randes des Ofenschachtes enden.It can also be provided according to the invention that the guide chutes end at a distance above the upper edge of the furnace shaft.

Eine weitere Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß die Auslässe der Leitrutschen im we- sentlichen in einer horizontalen Ebene liegen.Another embodiment of the invention is characterized in that the outlets of the chutes in WE - sentlichen in a horizontal plane.

Erfindungsgemäß kann ferner vorgesehen sein, daß die Abstreifer aus im wesentlichen vertikal angeordneten Platten, vorzugsweise aus Metallblech oder dergleichen, bestehen.According to the invention it can further be provided that the wipers consist of essentially vertically arranged plates, preferably of sheet metal or the like.

Auch schlägt die Erfindung gegebenenfalls vor, daß die Abstreifer von einer in Drehrichtung des Ringkastens gesehen hinter der jeweiligen Leitrutsche gelegenen Umfangsstelle des Ringkastens unter einem von der Radiusrichtung abweisenden Winkel bis zu einer Position in das Schüttgut vorstehen, die umfangsmäßig innerhalb des Bereiches der jeweiligen Leitrutsche liegt.The invention also proposes, if necessary, that the wipers from a circumferential point of the ring box located behind the respective guide chute, viewed in the direction of rotation of the ring box, under one of the radius protrude direction rejecting angle up to a position in the bulk material, which is circumferentially within the range of the respective guide chute.

Dadurch, daß unterhalb des Gichtsiloauslaufes bei der erfindungsgemäßen Vorrichtung in zweckmäßig bestimmtem Abstand die im wesentlichen horizontal angeordnete kreisförmige Platte vorgesehen ist, deren Abstand der Korngröße des gesamten Schüttgutes anpaßbar ist, läßt sich bei entsprechender Bemessung der Platte jegliches ungewolltes Ausfließen des Schüttgutes aus dem Gichtsilo verhindern. Die gleichmäßig am Umfang des drehbaren Ringkastens verteilt angebrachten Abstreifer, die in das lose liegende Material der Schüttgutböschung auf der Platte hineinragen und deren Anzahl mit der Anzahl der weiter oben beschriebenen Kreisringe sowie der Restfläche übereinstimmt, nehmen bei der Rotation des Ringkastens, dessen Drehgeschwindigkeit einstellbar ist, gleich große Materialmengen von der Platte und dem durch diese gebildeten Tisch ab und leiten das jeweilige Schüttgut auf die jeweils zugeordnete Leitrutsche. Die Leitrutschen sind dabei ebenso wie die Abstreifer fest mit dem Ringkasten verbunden und rotieren mit diesem. Natürlich ist die Anzahl der Leitrutschen und der Abstreifer gleich groß, wobei also jeweils einem Abstreifer eine Leitrutsche fest zugeordnet ist. Die Anzahl der Abstreifer sowie der Leitrutschen ist gleich der Anzahl der zu belegenden Kreisringe und der Restfläche der Schüttgutoberfläche im Ofenkopf, wobei die betreffende Anzahl der Kreisringe je nach Erfordernis beispielsweise vier, aber auch mehr oder weniger betragen kann. Jede Leitrutsche ist dabei so ausgebildet, daß ihr Auslauf den ihr zugeordneten Kreisring bzw. die Restfläche der Schüttgutoberfläche im Ofenkopf überstreicht.Characterized in that the substantially horizontally arranged circular plate is provided below the gout silo outlet in the device according to the invention, the distance of which can be adapted to the grain size of the entire bulk material, can prevent any unwanted outflow of the bulk material from the gout silo with appropriate dimensioning of the plate . The wipers, which are evenly distributed around the circumference of the rotating ring box, protrude into the loose material of the bulk material embankment on the plate and the number of which corresponds to the number of circular rings described above and the remaining area, take on rotation of the ring box, whose speed of rotation can be adjusted , equal amounts of material from the plate and the table formed by it and direct the respective bulk material to the respectively assigned guide chute. The guide chutes and the wipers are firmly connected to the ring box and rotate with it. Of course, the number of guide chutes and the wipers is the same, with one guide chute being assigned to one wiper. The number of scrapers and guide chutes is equal to the number of circular rings to be covered and the remaining surface of the bulk material surface in the furnace head, the number of circular rings in question depending on the requirement, for example four, but also more or less. Each guide chute is designed in such a way that its outlet sweeps over the associated ring or the remaining surface of the bulk material surface in the furnace head.

Infolge der starren mechanischen Verbindung der am rotierenden Ringkasten befestigten Abstreifer mit den Leitrutschen kann Schüttgutmaterial nur dann über den Außenrand der Platte abfließen, wenn die Rotation des Ringkastens begonnen hat, so daß eine Überlagerung oder Nichtbewegung der Kreisringe beim Anfahren oder Anhalten nicht stattfinden kann. Da zwangsweise alle Abstreifer und die ihnen zugeordneten Leitrutschen zu gleicher Zeit Schüttgut fördern , werden alle Kreisringe und die Restfläche praktisch zur gleichen Zeit belegt, so daß sich keine unvorteilhafte Böschung, wie sie bei einem einzeln belegten Kreisring auftreten könnte, bilden kann . Dadurch ist jegliche unvorteilhafte Entmischung des Schüttgutmaterials im Ofen ausgeschlossen. Eine eventuell notwendige Korrektur der einzelnen Fördermengen, wie sie beispielsweise zur Erzeugung einer gemuldeten Materialoberfläche im Ofenschacht notwendig sein kann, läßt sich einfach mittels Verstellung der Eintauchtiefen der Abstreifer bewerkstelligen, ohne daß hierzu eine Bedienungsperson in den Ofenkopf einsteigen müßte. iAs a result of the rigid mechanical connection of the wipers attached to the rotating ring box with the guide Bulk material can only slide off over the outer edge of the plate when the ring box has started to rotate, so that the circular rings cannot overlap or move when starting or stopping. Since all wipers and the associated guide chutes forcibly convey bulk material at the same time, all circular rings and the remaining surface are practically occupied at the same time, so that no unfavorable embankment, as could occur with an individually occupied circular ring, can form. This prevents any unfavorable separation of the bulk material in the furnace. Any necessary correction of the individual flow rates, as may be necessary, for example, to produce a hollowed-out material surface in the furnace shaft, can be accomplished simply by adjusting the immersion depths of the wipers, without an operator having to enter the furnace head. i

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Beschreibung, in der ein Ausführungsbeispiel anhand der Zeichnung im einzelnen erläutert ist. Dabei zeigt:

  • Fig. 1 ein Ausführungsbeispiel einer Vorrichtung nach der Erfindung im vertikalen Schnitt durch die Längsmittelachse eines Ofenschachtes; und
  • Fig. 2 das Ausführungsbeispiel von Fig. 1 in der Draufsicht, teilweise geschnitten.
Further features and advantages of the invention result from the following description, in which an exemplary embodiment is explained in detail with reference to the drawing. It shows:
  • Figure 1 shows an embodiment of a device according to the invention in vertical section through the longitudinal central axis of an oven shaft. and
  • Fig. 2 shows the embodiment of Fig. 1 in plan view, partially in section.

Wie die Zeichnung erkennen läßt, wird das aus einem Gichtsilo 1 oberhalb des Schachtofens ständig angebotene, bereits homogen gemischte Schüttgut 2 gleichmäßig im Ofenoberteil auf eine Oberfläche 3 mit kreisförmigem Querschnitt verteilt. Die zu belegende kreisförmige Oberfläche 3 des Schüttgutes im Ofenkopf ist in mehrere Kreisringe 4, 5, 6, 7 mit jeweils gleicher Querschnittsfläche aufgeteilt, d.h. also in Ringflächen, und eine sich zwangsläufig ergebende, zentrisch angeordnete Restfläche 8 mit kreisförmigem Querschnitt, wobei jeder der Ringflächen 4, 5, 6, 7 und der Restfläche 8 jeweils gleich große Schüttgutmengen zugeteilt werden.As can be seen in the drawing, the already homogeneously mixed bulk material 2, which is constantly offered from a top silo 1 above the shaft furnace, is distributed uniformly in the upper part of the furnace onto a surface 3 with a circular cross section. The circular surface 3 to be covered of the bulk material in the furnace head is in several circular rings 4, 5, 6, 7, each with the same cross-sectional area divided, that is to say into ring surfaces, and an inevitably resulting, centrally arranged residual surface 8 with a circular cross-section, each of the ring surfaces 4, 5, 6, 7 and the residual surface 8 each being assigned the same bulk quantities.

Unterhalb eines Gichtsiloauslaufes 9 ist im Abstand horizontal eine kreisförmige Platte 10 angeordnet. Abstreifer 11, die in das lose auf der Platte 10 sich abböschende Schüttgut 2 hineinragen, sind fest an einem drehbaren Ringkasten 12 montiert, wobei die Abstreifer 11 aus vertikal angeordneten Metallplatten bestehen, die in der aus Fig. 2 ersichtlichen Weise unter einem von der Radiusrichtung abweichenden Winkel in das Schüttgut 2 so hineinragen, daß ihre am weitesten in Richtung auf die Längsmittelachse des Schachtofens vorspringenden Enden innerhalb desjenigen Umfangsbereiches des Ringkastens 12 liegen, über den jedem der Abstreifer 11 zugeordnete Leitrutschen 14 vom Umfangsrand der Platte 10 nach schräg unten wegführen. Die Abstreifer 11 sind gleichmäßig am Umfang des Ringkastens 12 verteilt, wobei ihre Anzahl mit der Anzahl der Kreisringe 4, 5, 6 und 7 sowie der Restfläche 8 übereinstimmt. Die Leitrutschen 14 wiederum enden mit ihrem jeweiligen Auslaß oberhalb der zu belegenden Fläche 3 in unterschiedlichem Abstand von der Längsmittelachse des Ofens, wobei also jeweils eine der Leitrutschen 14 oberhalb jedes der Kreisringe 4, 5, 6, 7 bzw. der Restfläche 8 ausläuft. Auch die Leitrutschen 14 sind natürlich fest mit dem Ringkasten 12 verbunden, wobei die Anzahl der Leitrutschen 14 und der Abstreifer 11 gleich groß ist.A circular plate 10 is arranged horizontally at a distance below a gas silo outlet 9. Wipers 11, which protrude into the bulk material 2 loosely sloping on the plate 10, are fixedly mounted on a rotatable ring box 12, wherein the wipers 11 consist of vertically arranged metal plates, which in the manner shown in FIG. 2 under one of the radius direction protrude different angles into the bulk material 2 so that their ends projecting in the direction of the longitudinal central axis of the shaft furnace lie within that circumferential region of the ring box 12, via which each of the wipers 11 associated guide chutes 14 lead away obliquely downwards from the circumferential edge of the plate 10. The wipers 11 are evenly distributed on the circumference of the ring box 12, their number corresponding to the number of circular rings 4, 5, 6 and 7 and the remaining surface 8. The guide chutes 14 in turn end at their respective outlet above the surface 3 to be occupied at a different distance from the longitudinal central axis of the furnace, with one of the guide chutes 14 thus running out above each of the circular rings 4, 5, 6, 7 or the remaining surface 8. The guide chutes 14 are of course firmly connected to the ring box 12, the number of guide chutes 14 and the wipers 11 being the same.

Bei Rotation des Ringkastens 12 nehmen die Abstreifer 11 gleich große Materialmengen von der Platte 10 ab und leiten das betreffende Schüttgut auf die jeweils zugeordnete Leitrutsche 14, die das Material dann dem jeweiligen Kreisring 4, 5, 6, 7 bzw. der Restfläche 8 zuführen.When the ring box 12 rotates, the wipers 11 remove the same amount of material from the plate 10 and guide the bulk material in question to the respectively assigned guide chute 14, which then passes the material to the respective circular ring 4, 5, 6, 7 or the remaining surface 8 respectively.

Die in der vorstehenden Beschreibung, in der Zeichnung sowie den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebigen Kombinationen für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The features of the invention disclosed in the above description, in the drawing and in the claims can be essential both individually and in any combination for realizing the invention in its various embodiments.

BEZUGSZEICHENLISTE (LIST OF REFERENCE NUMERALS)LIST OF REFERENCE NUMERALS

Figure imgb0001
Figure imgb0001

Claims (9)

1. Vorrichtung zum Beschicken eines Schachtofens zum Brennen und Sintern von stückigem Gut, wie Kalkstein, Dolomit, Magnesit oder dergleichen, mit körnigem Schüttgut, mit einem oberhalb des im wesentlichen kreisförmigen Querschnitt aufweisenden Ofenschachtes angeordneten Gichtsilo (1) mit im wesentlichen homogen gemischtem Schüttgut (2) und einem Gichtsiloauslauf (9) zum Aufgeben des Schüttgutes (2) auf die zu belegende Oberfläche (3) der im Ofenschacht befindlichen Schüttgutsäule in über den Schachtdurchmesser steuerbarer Verteilung, gekennzeichnet durch eine mit Abstand unterhalb des Gichtsiloauslaufes (9) angeordnete, im wesentlichen kreisförmige Platte (10), deren Durchmesser kleiner ist als der Innendurchmesser des Ofenschachtes und größer als der Durchmesser der Auslaßöffnung des Gichtsiloauslaufes (9); und einen konzentrisch zu der Platte (10) drehbaren Ringkasten (12) oder dergleichen, an dem eine Anzahl von in das auf der Platte (10) sich abböschende Schüttgut (2) hineinragenden Abstreifern (11) angebracht ist, denen jeweils mit ihrem Auslaß in unterschiedlichem Abstand von der Längsmittelachse des Ofenschachtes endende Leitrutschen (4) oder dergleichen fest zugeordnet sind.1. Device for loading a shaft furnace for burning and sintering lumpy material, such as limestone, dolomite, magnesite or the like, with granular bulk material, with a top silo (1) arranged above the essentially circular cross-section of the furnace shaft with essentially homogeneously mixed bulk material ( 2) and a top silo outlet (9) for placing the bulk material (2) on the surface to be covered (3) of the column of bulk goods located in the furnace shaft in a distribution which can be controlled via the shaft diameter, characterized by a spacing below the top silo outlet (9), essentially circular plate (10), the diameter of which is smaller than the inside diameter of the furnace shaft and larger than the diameter of the outlet opening of the top silo outlet (9); and a ring box (12) or the like which can be rotated concentrically with respect to the plate (10) and to which a number of scrapers (11) projecting into the bulk material (2) which is sloping on the plate (10) are attached, each of which has its outlet in guide chutes (4) or the like ending at different distances from the longitudinal center axis of the furnace shaft are permanently assigned. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Platte (10) in vorzugsweise horizontal ausgerichteter Lage angeordnet ist.2. Device according to claim 1, characterized in that d a ß the plate (10) in preferably horizontally aligned position is arranged. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ringkasten (12) gesteuert mittels eines Elektromotors oder dergleichen antreibbar ist.3. Apparatus according to claim 1 or 2, characterized in that the ring box (12) can be controlled by means of an electric motor or the like. 4. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Eintauchtiefe wenigstens eines der Abstreifer (11) in das auf der Platte (10) befindliche Schüttgut (2) einstellbar ist.4. Device according to one of the preceding claims, characterized in that the immersion depth of at least one of the wipers (11) in the bulk material (2) located on the plate (10) is adjustable. 5. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens eine der Leitrutschen (14) von der Platte (10) bzw. dem Ringkasten (12) aus nach schräg unten in Richtung auf die Innenwandung des Ofenschachtes und wenigstens eine der Leitrutschen in Richtung auf die restliche zu belegende Oberfläche (3) verläuft.5. Device according to one of the preceding claims, characterized in that at least one of the guide chutes (14) from the plate (10) or the ring box (12) from obliquely downwards in the direction of the inner wall of the furnace shaft and at least one of the guide chutes in Direction to the remaining surface to be covered (3). 6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Leitrutschen (14) mit Abstand oberhalb des oberen Randes des Ofenschachtes enden.6. Device according to one of the preceding claims, characterized in that the guide chutes (14) end at a distance above the upper edge of the furnace shaft. 7. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Auslässe der Leitrutschen (14) im wesentlichen in einer horizontalen Ebene liegen.7. Device according to one of the preceding claims, characterized in that the outlets of the guide chutes (14) lie essentially in a horizontal plane. 8. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Abstreifer (12) aus im wesentlichen vertikal angeordneten Platten, vorzugsweise aus Metallblech oder dergleichen, bestehen.8. Device according to one of the preceding claims, characterized in that the wipers (12) consist of essentially vertically arranged plates, preferably made of sheet metal or the like. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Abstreifer (11) von einer in Drehrichtung des Ringkastens (12) gesehen hinter der jeweiligen Leitrutsche (14) gelegenen Umfangsstelle des Ringkastens (12) unter einem von der Radiusrichtung abweisenden Winkel bis zu einer Position in das Schüttgut (2) vorstehen, die umfangmäßig innerhalb des Bereiches der jeweiligen Leitrutsche (14) liegt.9. The device according to claim 8, characterized in that the wipers (11) seen from a in the direction of rotation of the ring box (12) behind the respective guide chute (14) located circumferential point of the ring box (12) at an angle from the radius direction up to one Project into the bulk material (2), which lies within the area of the respective guide chute (14).
EP85110485A 1985-08-21 1985-08-21 Shaft furnace charging device Expired - Lifetime EP0215135B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP85110485A EP0215135B1 (en) 1985-08-21 1985-08-21 Shaft furnace charging device
DE8585110485T DE3584894D1 (en) 1985-08-21 1985-08-21 DEVICE FOR LOADING A SHAFT OVEN.
AT85110485T ATE70313T1 (en) 1985-08-21 1985-08-21 DEVICE FOR LOADING A SHAFT FURNACE.
CA000516435A CA1306606C (en) 1985-08-21 1986-08-20 Apparatus for charging a shaft furnace
US07/122,585 US4767322A (en) 1985-08-21 1987-11-17 Apparatus for charging a shaft furnace

Applications Claiming Priority (1)

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EP85110485A EP0215135B1 (en) 1985-08-21 1985-08-21 Shaft furnace charging device

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EP0215135A1 true EP0215135A1 (en) 1987-03-25
EP0215135B1 EP0215135B1 (en) 1991-12-11

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AT (1) ATE70313T1 (en)
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EP1770174A1 (en) * 2005-09-30 2007-04-04 Paul Wurth S.A. Charging device for a shaft furnace
US7874570B2 (en) 2005-11-23 2011-01-25 Montag Roger A Tow behind steerable caddy trailer
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EP0400309A3 (en) * 1989-06-02 1991-04-03 Maerz Ofenbau AG Charging device for the alternate feeding and distribution of solid materials with two grain sizes

Also Published As

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EP0215135B1 (en) 1991-12-11
CA1306606C (en) 1992-08-25
US4767322A (en) 1988-08-30
ATE70313T1 (en) 1991-12-15
DE3584894D1 (en) 1992-01-23

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