EP0363906B1 - Beschickungseinrichtung für Schachtöfen, insbesondere Hochöfen - Google Patents

Beschickungseinrichtung für Schachtöfen, insbesondere Hochöfen Download PDF

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Publication number
EP0363906B1
EP0363906B1 EP89118813A EP89118813A EP0363906B1 EP 0363906 B1 EP0363906 B1 EP 0363906B1 EP 89118813 A EP89118813 A EP 89118813A EP 89118813 A EP89118813 A EP 89118813A EP 0363906 B1 EP0363906 B1 EP 0363906B1
Authority
EP
European Patent Office
Prior art keywords
furnace
charging
chamber
shaft
distributor
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 - Lifetime
Application number
EP89118813A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0363906A1 (de
Inventor
Ralph Dipl.-Ing. Weber
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.)
Kortec AG
Original Assignee
Kortec AG
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 Kortec AG filed Critical Kortec AG
Priority to AT89118813T priority Critical patent/ATE89319T1/de
Publication of EP0363906A1 publication Critical patent/EP0363906A1/de
Application granted granted Critical
Publication of EP0363906B1 publication Critical patent/EP0363906B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F27D2003/105—Charging directly from hoppers or shoots using shutters

Definitions

  • the invention relates to a loading device for shaft furnaces, in particular for blast furnaces, according to the preamble of patent claim 1.
  • a loading device of this type has become known, with two containers sealed against each other by container valves, which are arranged one above the other.
  • distributor pipes are provided for feeding the material to be loaded into the shaft furnace, and in the side wall of the lower container there is a rod-shaped contact which extends into the bulk material. This is used to monitor the height of the bulk material in the lower container and to refill the material to be loaded from the upper container into the lower container if the height falls below a minimum. This ensures that the manifolds are always filled with material.
  • a loading device for shaft furnaces has become known in which the Möller is also fed to the shaft furnace from a distributor chamber arranged above the shaft furnace via several distributor pipes arranged concentrically to the furnace axis.
  • a distributor pipe is arranged above each blow mold of the blast furnace. The entire Möller flow is fed to the individual distribution pipes one after the other in order to achieve uniform loading. This can be done, for example, by means of a rotatable pouring trough which is arranged in the distribution chamber.
  • a large number of loading devices are known, with which the feed material can be fed to different areas of the shaft furnace cross section in a targeted manner depending on the type and granularity, in order to thereby compensate for a one-sided furnace passage and to ensure uniform gas flow.
  • these are movable channels, rotatable and inclinable distribution chutes etc. (DE-C-749 557, DE-A-30 28 209).
  • movable distribution devices are exposed to the hot and dusty gases from the shaft furnace, their maintenance is made more difficult.
  • the object of the invention is in a loading device mentioned in the preamble of claim 1 Type of being able to feed the material to be loaded into the shaft furnace in the desired distribution with regard to the type and grain or piece size of the material to be loaded, in order to compensate for a one-sided furnace operation and to be able to ensure uniform gas flow through the entire furnace cross section. This should be possible without using rotatable distribution chutes.
  • a container arranged above the shaft furnace is divided into a lower distributor chamber and an upper lock chamber by a partition.
  • the partition can run horizontally, but preferably it runs obliquely downwards towards the center.
  • the dividing wall contains several individually closable openings distributed outside the center. This makes it possible to supply the feed chamber from the lock chamber in a targeted manner on one side, depending on the actuation of the individually closable openings, whereby a selection with regard to the grain size and the material can also be made in so far as the lock chamber with the release of the relevant closable openings Material of the desired grain size or type is filled.
  • this charging device In an area that is shielded from the hot and dusty furnace exhaust gases from the shaft furnace by the material located in the distributor pipes, this charging device only contains closures for openings, which are preferably designed as swivel flap closures and, compared to rotary chutes or closures exposed to the hot furnace exhaust gases, do not have any maintenance problems bring oneself.
  • the invention makes use of the fact that, in the case of a loading device in which the loading material is supplied via a distribution chamber through pipes distributed over the cross-section of the shaft furnace, a different lowering of the loading material in the shaft furnace due to an uneven furnace passage by corresponding pulling out of the distribution pipes is mapped in the distribution chamber, that is, by observing the loading profile in the distribution chamber, a one-sided furnace passage can be determined and by material of suitable grain and type is specifically fed into this area, which then reaches the desired cross-sectional area of the shaft furnace via the relevant distribution pipes, which Unevenness in the furnace can be compensated. Since the targeted distribution can be achieved by individually opening openings, the closing elements of which are not exposed to high temperatures, it is therefore possible with simple, reliable means to compensate for a different furnace cycle and to ensure even gas flow through the shaft furnace.
  • a vertical rotary shaft is mounted in the center of the container, the lower end of which extends into the distribution chamber.
  • a horizontal leveling bar that can be rotated by rotating the rotating shaft.
  • the rotating shaft can be raised and lowered together with the leveling rod within the distribution chamber. This creates the possibility of mixing and leveling the feed material in the distribution chamber.
  • the leveling rod can be used as an indicator for the height of the bulk material in the distribution chamber.
  • movable additional devices can be used to improve the flow.
  • a shaft furnace 1 to 3 for a shaft furnace 1, in particular a blast furnace, contains a container 3 placed centrally on the upper end of the shaft furnace by means of a conically shaped end plate 2.
  • gas discharge pipes 4 are provided, the lower ends of which open into the top gas space 5 above the loading surface 6 of the loading material 7 introduced into the shaft furnace.
  • the container 3 is divided into a lower distribution chamber 9 and an upper lock chamber 10 by a dividing wall 8 which runs obliquely towards the center.
  • the bottom of the container 3, which also forms the bottom of the distributor chamber 9, contains a plurality of outlet openings 11 distributed over the bottom surface, in which distributor pipes 12 are attached, which end in the upper region of the shaft furnace 1 at a height which is lower than the upper gas outlet of the shaft furnace, that is to say the inlet openings into the gas discharge pipes 4.
  • the arrangement of the distributor pipes 12, which each have a flange 13 at the upper end, with which they are supported at the edge of the floor opening 11 in question, can be seen from FIGS. 1 and 3 .
  • the cross-sectional view of Fig. 3 shows that in the present case, in addition to a central manifold six evenly the circumferentially arranged manifolds 12 are provided.
  • the dividing wall 8, which at the same time forms the bottom of the lock chamber 10, contains at least two individually closable bottom openings 14 distributed outside its center over the circumference.
  • four bottom openings 14 are provided, as the cross-sectional view of FIG. 2 shows. From the cross-sectional views of FIGS. 2 and 3 it can also be seen that both the shaft furnace 1 and the container 3 have a circular cross-section and that the dividing wall 8 which runs obliquely downwards towards the center is formed by four circular sectors 8/1 to 8/4 is formed. A closable opening 14 is provided in each of these circular sectors.
  • the circular sectors are flat, so that the partition 8 corresponds to the outer surface of a pyramid standing on the top.
  • sectors of a cone shell can also be provided.
  • the openings 14 are expediently to be provided with a flange in order to create flat contact surfaces for the closure members.
  • the closure members for the individually closable bottom openings 14 are designed in the embodiment as flaps 15, one of which is shown in FIGS. 1 and 2 and through which the relevant bottom openings 14 can be closed from below.
  • the flap 15 is shown in Fig. 1 by solid lines in the closed position and by dashed lines in the release position.
  • the flaps 15 are mounted in a swivel arm 16 which is fastened on an actuating shaft 17 which can be individually rotated by a predetermined angle between the closed position and the release position by drive means, not shown.
  • a neoprene seal is attached, which ensures a gas-tight closure in the closed state of the flap.
  • other closing elements such as slides or valves, could also be used.
  • the lock chamber 10 is closed at the top by a filling funnel 18, which is designed in the same way as the partition 8, that is, the filling funnel is also formed by four circular sectors, each of which has a closable opening 19. Individually operable flaps are also provided as closure members.
  • the section indicated by IV-IV in FIG. 1 thus presents itself in the same way as section II-II, which is illustrated in FIG. 2.
  • the space above the filling funnel 18 is intended for receiving the feed material to be charged in the shaft furnace. Above this space, which can be locked by a cover, a slide 20 and a conveyor belt 21 are shown schematically.
  • a guide tube 22 is attached concentrically to the vertical central axis of the container 3.
  • a rotary shaft 23 is rotatably and axially displaceably mounted. The drives for these two movements are arranged at the upper end of the rotary shaft and are not shown.
  • a leveling rod 24 is fastened, which is rotated when the shaft rotates and which is raised and lowered within the distribution chamber 9 when the shaft is raised and lowered.
  • a window 25 is provided in the container wall, through which the loading surface forming in the distribution chamber 9 can be observed.
  • the feed material 7 drops within the shaft furnace and to the same extent further load material is fed from the distributor chamber 9 via the distributor pipes 12, so that the feed profile 6 in the shaft furnace is always kept at approximately the same height.
  • the leveling rod 24 had been raised after the previous filling of the distribution chamber 9 and was placed on the loading surface 26 in the distribution chamber 9. As the loading surface 26 sinks in the distribution chamber, the leveling bar 24 resting thereon and the rotary shaft 23 also decrease. This lowering movement can be used as an indication of the fill level in the distribution chamber 9.
  • the shaft furnace has a one-sided furnace passage, that is to say the feed material is consumed faster on the right side of the furnace than on the left side in the case shown.
  • the furnace operation can thus be influenced in the desired manner.
  • the leveling rod 24 it is also possible to level and mix the feed material introduced into the distribution chamber 9 from the lock chamber 10. Such a leveling is desirable in order to be able to better determine uneven sinking movements when the feed material sinks.
  • the leveling rod When filling material from the lock chamber 10, the leveling rod, by means of which the minimum height in the distribution chamber has previously been detected, is located on a level below the freshly refilled material.
  • a good mixing and leveling of the refilled material is achieved by means of a rotary movement which can take place in both directions and a slow lifting movement of the rotary shaft 23. After this mixing and leveling process, the rotary shaft 23 is raised and lowered onto the loading surface, so that the lowering movement of the rotating shaft with the feed material in the distributor chamber 9 can be used to monitor the filling level in this chamber.

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)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Tunnel Furnaces (AREA)
  • Baking, Grill, Roasting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Electric Stoves And Ranges (AREA)
  • Package Specialized In Special Use (AREA)
  • Electric Ovens (AREA)
  • Manufacture Of Iron (AREA)
  • Discharge Heating (AREA)
  • Blast Furnaces (AREA)
EP89118813A 1988-10-13 1989-10-10 Beschickungseinrichtung für Schachtöfen, insbesondere Hochöfen Expired - Lifetime EP0363906B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89118813T ATE89319T1 (de) 1988-10-13 1989-10-10 Beschickungseinrichtung fuer schachtoefen, insbesondere hochoefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834969A DE3834969A1 (de) 1988-10-13 1988-10-13 Beschickungseinrichtung fuer schachtoefen, insbesondere hochoefen
DE3834969 1988-10-13

Publications (2)

Publication Number Publication Date
EP0363906A1 EP0363906A1 (de) 1990-04-18
EP0363906B1 true EP0363906B1 (de) 1993-05-12

Family

ID=6365087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118813A Expired - Lifetime EP0363906B1 (de) 1988-10-13 1989-10-10 Beschickungseinrichtung für Schachtöfen, insbesondere Hochöfen

Country Status (7)

Country Link
US (1) US4949940A (pt)
EP (1) EP0363906B1 (pt)
AT (1) ATE89319T1 (pt)
BR (1) BR8905179A (pt)
DE (2) DE3834969A1 (pt)
ES (1) ES2044010T3 (pt)
PT (1) PT91969B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396482B (de) * 1991-05-29 1993-09-27 Voest Alpine Ind Anlagen Anlage mit einem schacht, insbesondere reduktionsschachtofen
US5494263A (en) * 1994-03-07 1996-02-27 Centro De Investigacion Y Asistencia Tecnica Del Edo. De Qro, A.C. System for solid material charging into vertical reactors by electronic control of the exhaust gases
DE10327276A1 (de) 2003-06-17 2005-01-05 Z & J Technologies Gmbh Vorrichtung zum Verschließen oder Öffnen einer Öffnung, insbesondere Bodenöffnung eines Materialbunkers für einen Hochofen
US7467559B2 (en) * 2006-10-09 2008-12-23 Schlumberger Technology Corporation Apparatus and methods for sample handling and rheology analysis
MD3959C2 (ro) * 2007-07-04 2010-04-30 Dinano Ecotechnology Llc Dispozitiv de încărcare a instalaţiei pentru prelucrarea materiei prime ce conţine carbon
KR102270393B1 (ko) * 2019-10-22 2021-06-30 에스케이실트론 주식회사 원료 공급 유닛, 이를 포함하는 실리콘 단결정 잉곳의 성장 장치 및 원료 공급 방법
KR20220154452A (ko) * 2021-05-13 2022-11-22 현대자동차주식회사 원료분말용 호퍼 및 이를 이용한 원료분말 이송방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB311506A (en) * 1928-03-20 1929-05-16 William Thomas Bell Improved construction of apparatus for feeding coal and like dust to a burner for burning in a furnace or the like
DE749557C (de) * 1940-05-05 1944-11-25 Beschickungsvorrichtung fuer Hochoefen
DE1035367B (de) * 1952-07-25 1958-07-31 Ko We Niederschachtofen Ges M Beschickungseinrichtung fuer Schachtoefen
DE1263040B (de) * 1963-09-19 1968-03-14 Demag Ag Gichtverschluss mit Verteilvorrichtung fuer das Begichtungsgut fuer insbesondere im Durchmesser grosse, im Hochdruckverfahren betriebene Hochoefen
GB1174068A (en) * 1966-11-08 1969-12-10 Ishikawajima Harima Heavy Ind Furnace Top Charging Equipment
DE1608301C3 (de) * 1968-03-06 1974-01-03 Demag Ag, 4100 Duisburg Verfahren und Gichtverschluß zum Beschicken von Schachtofen, insbesondere von im Hochdruck betriebenen Hochöfen
DE1803560A1 (de) * 1968-10-17 1970-05-27 Demag Ag Verfahren und Gichtverschluss zum Begichten von Schachtoefen,insbesondere von Hochoefen
DE7535021U (de) * 1975-11-04 1977-08-11 Gutehoffnungshuette Sterkade Ag, 4200 Oberhausen Vorrichtung an einem schachtofen
US4029220A (en) * 1975-11-28 1977-06-14 Greaves Melvin J Distributor means for charging particulate material into receptacles
SU850669A1 (ru) * 1978-11-21 1981-07-30 Украинский Государственный Институтпо Проектированию Металлургическихзаводов Загрузочное устройство доменной печи
SE441865B (sv) * 1981-03-10 1985-11-11 Skf Steel Eng Ab Anordning for att uppifran tillfora styckeformigt material till ett schakt
AT382712B (de) * 1985-05-10 1987-04-10 Voest Alpine Ag Beschickungsvorrichtung fuer einen schachtofen zum brennen von karbonathaltigem, mineralischem brenngut
LU86336A1 (fr) * 1986-03-04 1987-11-11 Wurth Paul Sa Installation de chargement d'un four a cuve

Also Published As

Publication number Publication date
EP0363906A1 (de) 1990-04-18
PT91969A (pt) 1990-04-30
US4949940A (en) 1990-08-21
DE3834969A1 (de) 1990-04-19
ATE89319T1 (de) 1993-05-15
ES2044010T3 (es) 1994-01-01
BR8905179A (pt) 1990-05-15
PT91969B (pt) 1995-08-09
DE58904333D1 (de) 1993-06-17

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