EP0101846B1 - Procédé et dispositif de commande du mouvement d'une goulotte oscillante et application à une installation de chargement d'un four à cuve - Google Patents

Procédé et dispositif de commande du mouvement d'une goulotte oscillante et application à une installation de chargement d'un four à cuve Download PDF

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Publication number
EP0101846B1
EP0101846B1 EP83106698A EP83106698A EP0101846B1 EP 0101846 B1 EP0101846 B1 EP 0101846B1 EP 83106698 A EP83106698 A EP 83106698A EP 83106698 A EP83106698 A EP 83106698A EP 0101846 B1 EP0101846 B1 EP 0101846B1
Authority
EP
European Patent Office
Prior art keywords
angular
spout
angular speed
speed
chute
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
EP83106698A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0101846A2 (fr
EP0101846A3 (en
Inventor
Edouard Legille
Guy Thillen
Emile Lonardi
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 AT83106698T priority Critical patent/ATE22723T1/de
Publication of EP0101846A2 publication Critical patent/EP0101846A2/fr
Publication of EP0101846A3 publication Critical patent/EP0101846A3/fr
Application granted granted Critical
Publication of EP0101846B1 publication Critical patent/EP0101846B1/fr
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
    • 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 specially adapted for 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
    • F27D3/10—Charging directly from hoppers or shoots
    • 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
    • F27D19/00—Arrangements of controlling devices
    • 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 present invention relates to a method of controlling the movement of an oscillating chute which can pivot around two orthogonal axes and actuated, for this purpose, by two drive means independent of each other to move the end of the chute following concentric circles or a spiral around a vertical axis.
  • the invention also relates to a device for implementing this method as well as an installation for loading a shaft furnace equipped with such a device and implementing this method.
  • the object of the present invention is to provide a new method for controlling the movement of an oscillating chute making it possible to eliminate, if not to attenuate, this irregularity by compensation.
  • An auxiliary object of the invention is to provide a device for the implementation, as well as its application to a loading installation of a shaft furnace.
  • the invention provides a method of controlling the movement of the chute, which is characterized in that the angular speed of rotation of the chute is modified around the vertical axis at the angular positions of the chute defined. in the horizontal plane in which the thickness of the deposited layer risks being irregular.
  • the angular positions of the chute in which the pivots which cause the deposit irregularities occur can be determined experimentally or by calculation. Knowing these angular positions, the invention therefore proposes to increase the angular speed of rotation of the chute at the places where the thickness of the deposited layer tends to increase, and to reduce the angular speed where the thickness has tendency to decrease.
  • the angular speed of the chute movement is regulated according to a preferred embodiment, according to the formula
  • the procedure is as follows by iteration:
  • FIGS. 1 and 2 show an oscillating distribution chute 10 in a well-defined angular position, in which it occupies an inclination ⁇ (see FIG. 2) relative to a vertical axis 0 and an angular position y (FIG. 1) a horizontal reference axis, for example, the X axis.
  • ⁇ see FIG. 2
  • y a horizontal reference axis
  • the chute in this inclination is animated by a gyratory movement, clockwise shows, around the axis 0 with an angular speed ⁇ to effect an annular deposition of the loading material on the melting bed, the relation therefore being
  • the reference 12 designates an annular deposit of material when the chute 10 rotates around the axis 0 with an inclination ⁇ .
  • the reference 14 designates the horizontal projection of the circular path of the lower end of the chute 10.
  • This loading material discharged from the chute therefore has a fall path 16 with a vertical component and an angular component due to ⁇ .
  • the loading material does not fall to the point targeted by the chute at the precise moment when the material leaves this chute. This is illustrated in Figure 1.
  • This angular offset Aa is not only a function of the particle size of the material, but also of its falling speed, that is to say that depending on its falling speed, the particle reaches faster or slower the fusion bed and its drop point will be before or beyond the position Aa.
  • the offset Aa decreases up to, for example Aa-s, which tends to cause an increase in the thickness of the deposit at a location being offset by an angle Aa-s from the position angular of the chute where this pivoting occurred.
  • the offset Aa becomes Aa + ⁇ , which causes a decrease in the thickness of the deposit of the material. This slowdown occurs at the end of the pivoting phase and the reduction in thickness is therefore offset by an angle Aa + s from the angular position in which the pivoting of the chute ends.
  • FIG. 3 shows, in polar coordinates, the thickness of an annular layer of material poured onto the fusion bed, this thickness being proportional to their distance to the origin.
  • the curve e m represents the optimum average thickness that can be calculated for example from the content of a storage tank and the surface area of the melting bed. This thickness being uniform, the curve representing e m is necessarily a circle.
  • the curve represented by e r is the actual thickness of a layer deposited by an oscillating chute animated by a gyratory movement at constant angular speed ⁇ 0 and affected by the irregularities described above.
  • the thickness for each angular position a is represented by the length of the vector e.
  • the curve e whose outline has been deliberately exaggerated, allows two positions of maximum thickness to be recognized at the points E r-max located at the angular positions of 0 ° and 180 °, as well as two positions with minimum thickness at the points E r- min located respectively at the angular positions of 90 ° and 270 °.
  • Figure 4 is a polar diagram similar to that of Figure 3, but for the representation of the angular velocities ⁇ .
  • ⁇ o is the constant angular velocity for the deposition of the real irregular layer e r of FIG. 3.
  • the curve ⁇ c is a curve of compensated speeds obtained by the modification of the curve ⁇ o according to the formula
  • the angular velocity for each angular position is represented by the length
  • the purpose of the angular speed compensation is that the phenomena due to the pivoting of the chute and those due to the variation of the angular speed compensate each other to obtain a uniform deposited layer.
  • the curve e c in FIG. 3 corresponds to the curve ⁇ c in FIG. 4, that is to say the thickness of the layer deposited by modifying the angular speed according to the above formula.
  • the curve e c is of course offset by an angle Aa relative to the curve ⁇ c to take account of the fall time.
  • the effect of this compensation for the angular velocity according to FIG. 4 is that the layer e r is modified so as to produce a curve e approaching the ideal circular curve e m , that is to say by changing the chute faster at the angular positions corresponding to increases in the thickness of the deposit along curve e, and more slowly at the angular positions corresponding to smaller thicknesses of deposit in curve e , there is a tendency to reduce thickness irregularities of the deposited layer.
  • the compensated thickness approaches the ideal uniform thickness e m .
  • the determination of 0 ) 1 , 02, ... is carried out either by tests or by calculation, since the parameters involved in this determination can be measured or calculated.
  • the compensated angular velocities ⁇ 1 , 0) 2, ... can be determined for different inclinations ⁇ and for different grain sizes.
  • compensated angular speed can be stored in a microcomputer which can calculate, at any time, by linear interpolations the exact value of the compensated angular speed of the chute.
  • FIG. 5 represents a block diagram of an embodiment of a control circuit for the compensation of the angular speed of the chute.
  • the microcomputer of which question above, is represented by the reference 10. This microcomputer receives information concerning the inclination ⁇ and the nature of the loading material for the calculation of the compensated angular velocities.
  • a motor 12 for driving the chute is subject to the control signals of an angular speed variator 14 comprising, inter alia, an integrated comparator.
  • Reference 16 designates the mechanical part of a pulse transmitter
  • references 18 and 20 respectively designate an angular speed detector and a position detector, these two detectors can however be combined, since
  • the angular speed detector 18 generates at each instant signals corresponding to the real speed instant r and sends these signals to the variable speed drive 14.
  • the position detector generates, at every instant, signals corresponding to the angular position a of the distribution chute and sends these signals to the microcomputer 10.
  • This microcomputer 10 calculates, at each instant, on the basis of the information received, that is to say a, ⁇ and the parameters corresponding to the nature of the loading material, the compensated angular speed ⁇ c , thanks to the above formulas.
  • Signals corresponding to the angular speed Oc calculated by the microcomputer 10 are sent to the angular speed variator 14.
  • the integrated comparator thereof compares at all times the compensated angular speed ⁇ c with the actual angular speed Or of which it receives the information from the detector 18 and, depending on the result of this comparison, the drive motor 12 will be accelerated or slowed down.
  • the method for correcting the angular speed of the chute is particularly suitable for a drive device of the type proposed in the aforementioned Luxembourg patent application No. 83,280 because of the fact that the gyratory movement of this oscillating chute is caused by a circular movement drive device. It should however be noted that the correction device proposed is also suitable for other devices for driving an oscillating chute with cardan suspension, for example that driven by a pair of hydraulic cylinders.

Landscapes

  • 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)
  • Blast Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Chutes (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Making Paper Articles (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Arc Welding In General (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Cartons (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Jigging Conveyors (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP83106698A 1982-07-28 1983-07-08 Procédé et dispositif de commande du mouvement d'une goulotte oscillante et application à une installation de chargement d'un four à cuve Expired EP0101846B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106698T ATE22723T1 (de) 1982-07-28 1983-07-08 Verfahren und vorrichtung zum steuern der bewegung einer einfuelleitung und deren anwendung fuer eine beladevorrichtung eines schachtofens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84303 1982-07-28
LU84303A LU84303A1 (fr) 1982-07-28 1982-07-28 Procede et dispositif de commande du mouvement d'une goulotte oscillante et application a une installation de chargement d'un four a cuve

Publications (3)

Publication Number Publication Date
EP0101846A2 EP0101846A2 (fr) 1984-03-07
EP0101846A3 EP0101846A3 (en) 1984-05-23
EP0101846B1 true EP0101846B1 (fr) 1986-10-08

Family

ID=19729928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106698A Expired EP0101846B1 (fr) 1982-07-28 1983-07-08 Procédé et dispositif de commande du mouvement d'une goulotte oscillante et application à une installation de chargement d'un four à cuve

Country Status (17)

Country Link
US (1) US4575790A (cs)
EP (1) EP0101846B1 (cs)
JP (1) JPS5941405A (cs)
KR (1) KR920006585B1 (cs)
AT (1) ATE22723T1 (cs)
AU (1) AU563801B2 (cs)
BR (1) BR8304098A (cs)
CA (1) CA1203308A (cs)
CS (1) CS254321B2 (cs)
DE (1) DE3366729D1 (cs)
ES (1) ES8500663A1 (cs)
IN (1) IN158936B (cs)
LU (1) LU84303A1 (cs)
PL (1) PL140295B1 (cs)
SU (1) SU1143316A3 (cs)
UA (1) UA7055A1 (cs)
ZA (1) ZA835074B (cs)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU86822A1 (fr) * 1987-03-24 1988-11-17 Wurth Paul Sa Procede et dispositif de correction de la trajectoire de chute dans une installation de chargement d'un four a cuve
AT388543B (de) * 1987-11-12 1989-07-25 Voest Alpine Ag Foerdereinrichtung zum dosierten foerdern von schuettgut
JPH0541046Y2 (cs) * 1988-06-07 1993-10-18
USD332955S (en) 1990-01-11 1993-02-02 Hull Herman E Pivotal chute
LU87938A1 (fr) * 1991-05-15 1992-12-15 Wurth Paul Sa Installation de chargement d'un four a cuve
DE10240219A1 (de) * 2002-08-28 2004-03-11 Claas Selbstfahrende Erntemaschinen Gmbh Vorrichtung zur Steuerung einer Überladeeinrichtung
EP1662009A1 (en) 2004-11-26 2006-05-31 VAI Industries (UK) Ltd. Device for distributing material into a furnace
AT502479B1 (de) * 2005-10-24 2007-04-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum chargieren von einsatzstoffen
CN101580886B (zh) * 2008-05-13 2010-09-22 中冶赛迪工程技术股份有限公司 一种散装物料布料器
EP2955236A1 (de) * 2014-06-13 2015-12-16 Siemens VAI Metals Technologies GmbH Verfahren zur Regelung der Füllhöhe eines Rohmaterials in einem Hochofen sowie deren Vorrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782486A (en) * 1955-03-11 1957-09-04 United States Steel Corp Swinging spout and drive therefor applicable to the travelling grates of sintering apparatus
US3362585A (en) * 1965-12-23 1968-01-09 Fischer & Porter Co Dry chemical feeder
US3581070A (en) * 1968-11-01 1971-05-25 Nippon Steel Corp Apparatus for operating a shaft furnace by detecting the falling speed of the charge
US3929240A (en) * 1972-07-05 1975-12-30 Wurth Anciens Ets Paul Shaft furnace charging process
LU65660A1 (cs) * 1972-07-05 1972-10-30
JPS5222802B2 (cs) * 1973-10-12 1977-06-20
LU70952A1 (cs) * 1974-09-20 1975-03-06
LU77547A1 (cs) * 1977-06-16 1977-09-19
NL7707178A (en) * 1977-06-29 1979-01-03 Hoogovens Ijmuiden Bv Device for determining charge distribution in blast furnace - consists of two radar antennae mounted on ball joints, a transmitter and a receiver
DE2927316B1 (de) * 1979-07-06 1980-02-21 Demag Ag Mannesmann Verteilvorrichtung fuer Gichtverschluesse von Schachtoefen,insbesondere fuer Hochofen-Gichtverschluesse
LU83280A1 (fr) * 1981-04-03 1983-03-24 Wurth Paul Sa Procede pour actionner une goulotte oscillante dans une enceinte sous pression,dispositif pour la mise en oeuvre de ce procede et installation de chargement d'un four a cuve equipe d'un tel dispositif
LU83370A1 (fr) * 1981-05-18 1983-03-24 Wurth Paul Sa Dispositif de commande du mouvement d'une goulotte oscillante et installation de chargement d'un four a cuve equipe d'un tel dispositif
LU84521A1 (fr) * 1982-12-10 1984-10-22 Wurth Paul Sa Dispositif de refroidissement d'une installation de chargement d'un four a cuve

Also Published As

Publication number Publication date
LU84303A1 (fr) 1984-03-22
PL243129A1 (en) 1984-03-12
AU563801B2 (en) 1987-07-23
KR840005570A (ko) 1984-11-14
IN158936B (cs) 1987-02-21
CA1203308A (en) 1986-04-15
EP0101846A2 (fr) 1984-03-07
US4575790A (en) 1986-03-11
SU1143316A3 (ru) 1985-02-28
ATE22723T1 (de) 1986-10-15
ES524421A0 (es) 1984-11-16
JPH0336889B2 (cs) 1991-06-03
UA7055A1 (uk) 1995-03-31
ES8500663A1 (es) 1984-11-16
EP0101846A3 (en) 1984-05-23
DE3366729D1 (en) 1986-11-13
KR920006585B1 (ko) 1992-08-10
ZA835074B (en) 1984-03-28
BR8304098A (pt) 1984-03-07
CS545883A2 (en) 1987-06-11
CS254321B2 (en) 1988-01-15
AU1661683A (en) 1984-02-02
PL140295B1 (en) 1987-04-30
JPS5941405A (ja) 1984-03-07

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