EP1787079A1 - Charging device for a strip sintering machine - Google Patents
Charging device for a strip sintering machineInfo
- Publication number
- EP1787079A1 EP1787079A1 EP05774028A EP05774028A EP1787079A1 EP 1787079 A1 EP1787079 A1 EP 1787079A1 EP 05774028 A EP05774028 A EP 05774028A EP 05774028 A EP05774028 A EP 05774028A EP 1787079 A1 EP1787079 A1 EP 1787079A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sintered
- feed
- chute
- drum
- feed container
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
-
- 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
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
- F27B21/06—Endless-strand sintering machines
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/18—Sintering; Agglomerating in sinter pots
-
- 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
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
-
- 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
Definitions
- the invention relates to a feeding device for a band-edge sintering machine, with a feed container for receiving the material to be sintered, with a conveyor for filling the feed hopper with material to be sintered, with a feed drum and a drum chute for the task of sintering the material on the sintering belt.
- the invention further relates to a method for depositing material to be sintered onto a sintering belt.
- the thickness of the layer applied to the sintering belt is preferably increased.
- layer thicknesses of about 300 to 350 mm were common.
- sintering machines are already being operated with layer thicknesses of up to 850 mm. This can only be achieved without reducing the productivity if the permeability of the mixture improves and / or the negative pressure in the suction system is increased.
- the increase in the layer thickness would therefore have the advantage that - based on the total sintered amount - relatively less coke would be needed.
- JP 2001-287872 discloses a two-layer feed of sintered material via a feed bunker with two discharge openings.
- the sintered material is charged into the feed bunker in such a way that segregation occurs.
- Each of the discharge openings is assigned a complete system of conveyor, feed drum and drum chute.
- a disadvantage of this variant is the high maintenance costs, as well as a complicated and trouble-prone control of two task drums.
- the object is achieved in a feeding device for a band-edge sintering machine according to the preamble of claim 1 by the features of the characterizing part of claim 1.
- the object is further achieved in a method according to the preamble of claim 9 by the features of the characterizing part of claim 9.
- the location of the charge of the material to be sintered in the feed container causes segregation of the material to be sintered.
- the slope of the embankment corresponds to the mean discharge angle of the charged material.
- the impact point of the material conveyed by the conveyor is chosen to be in the range comes, which lies above the first discharge opening.
- the charged material can segregate, ie coarse grain rolls along the embankment downwards, fine grain remains at the top of the embankment.
- specifically lighter coke breeze preferably remains in the topsheet.
- the thus separated into coarse and fine grain material is now discharged through the respective area associated discharge and fed to the sintering belt, namely the coarse grain in free flow through adireschurre directly to the sintering belt or the grate thereon, and the fine grain on a feeding drum and subsequent drum chute on the already located on the sintering belt layer of coarse grain.
- a task chute Compared to a discharge of the coarse grain by a second feeding drum has a task chute has the advantage that the sintering raw mixture can leak out of it freely and always adjusts a defined layer height at a once selected arrangement and geometry of the feed chute. The surface of this layer is completely flat and requires no further measure to produce a flat surface. The agglomerates previously formed in a mixing and rolling device are not damaged in the free run out of the task chute.
- the layer of material to be sintered produced in this way has a grain size increasing from top to bottom. Surprisingly, the coke content in the bed is also rising from bottom to top.
- the conveying device is arranged such that it reaches a point of impact of the conveyed material at or near the end face of the feed container.
- the forming embankment has the largest possible length, so that there is a particularly effective segregation of coarse and fine grain.
- the conveying device comprises a baffle for targeted ejection of the material to be sintered.
- a baffle which e.g. designed as an inclined chute, facilitates precise charging of the material to be sintered at the desired location.
- the baffle can be fixedly connected to the conveyor device according to a possible variant, according to a further variant, the baffle is fixedly installed in the feed container.
- the conveying device can be different.
- the conveying device comprises a pivoting conveyor or a pivoting chute or a Querverfahrband or a cross conveyor, which is movable transversely to the direction of movement of the sintering belt.
- a pivoting conveyor is rotatably mounted in its rear region about an axis and can cover or fill the task container over its entire width by rotation about this axis.
- the filling takes place parallel to the direction of movement and preferably also in the direction of movement of the sintering belt, so that the segregation within the feed container is parallel to the direction of movement of the sintering belt. Segregation transverse to the direction of movement of the sintering belt is undesirable, because this would mean that coarse grain comes to rest on the edges of the sintering belt.
- a pivoting chute is - similar to a pivoting conveyor - rotatably mounted about an axis. In contrast to the pivoting conveyor, the conveying process takes place in the task chute but by gravitational forces.
- a transverse conveyor belt is a short conveyor belt of about 5 - 8 meters in length, which is arranged so that its conveying direction is parallel to the direction of movement of the sintering belt.
- the transverse conveyor belt is fed from the side, for example by a transverse conveyor, or by a conveyor, whose conveying direction is also parallel to the direction of movement of the sintering belt, with material to be sintered, which is dropped by the transverse conveyor at the desired location in the feed bunker.
- the cross conveyor is moved along the entire width of the feed hopper together with the cross conveyor or other conveyor in order to ensure a uniform material feed.
- the conveyor device can also be formed by a transverse conveyor, which is advantageously movable transversely to the direction of movement of the sintering belt.
- the conveyor device also comprises a guide plate, wherein the guide plate is either attached to the cross conveyor or fixedly installed in the feed container.
- the baffle is desirable in order to redirect the filling direction effected by the cross conveyor from "transversely to the direction of movement of the sintering belt" in a filling direction "parallel to the direction of movement of the sintering belt". Otherwise, an undesirably high level of segregation would occur across the tape movement direction.
- the conveying device can also be moved to an extent parallel to the direction of movement of the sintering belt, so that the grain size segregation can also be influenced by targeted selection of the impact point.
- the size and / or position of the second discharge opening can be changed.
- the second discharge opening is advantageously made e.g. Resizable by slider. If the size of the discharge opening is changed by a slide, the middle position of the discharge opening and thus also that portion of the particle size spectrum which the material discharged through the discharge opening from the feed container changes.
- the grain size composition of the coarse grain applied to the sintering belt can be influenced in an advantageous manner.
- the feed chute In order to set the maximum amount of material to be sintered per unit time, the feed chute can be pivoted about a horizontal axis and / or the feed chute can be adjusted in the vertical direction and / or the size of the discharge opening of the feed chute can be changed.
- a task chute offers the possibility to keep a set layer thickness constant without any further regulating intervention, without danger of caking and with always flat surface.
- a device for preheating the material fed onto the sintering belt is arranged between the feed chute and the drum chute.
- the device is formed for preheating with recirculated combustion exhaust gases or heated air.
- This device has the purpose to heat the material to be sintered, which has a moisture content of about 5 to 7%, so that the amount of heat to be applied thereafter is generally lower. Likewise, the condensation of water vapor on the lower layer is reduced during the later sintering process.
- the material to be sintered can also be predried by the device for preheating. If desired, other gases can be introduced via this device in the material to be sintered.
- the feed device has a probe with the aid of which the thickness of the layer applied to the coarse-grain layer by the feed drum and the drum chute is measured. This probe is used to measure the feed rate of the To control the feed drum, if the measured layer thickness deviates from a preset setpoint.
- a separate control of the layer height of the coarse grain layer is unnecessary, because the thickness of this layer remains constant because of the task by means of feed chute - once set.
- the invention also relates to a method for the task of sintering material to a sintered belt according to the preamble of claim 9.
- the object of the invention is achieved in this method by the features of the characterizing part of claim 9.
- Fig. 1 shows a feed device according to the invention
- Fig. 2 shows in plan view a pivoting conveyor used for the feeder
- Fig. 1 is applied to the grid of a sintering belt 1, which is moved in the direction of arrow 2, grate 3 via a chute 4.
- the device 5 for the purpose of grate coating 3 is subordinated in the strip running direction 2, the feed device 6 according to the invention.
- the feed container 7 8 material to be sintered via the conveyor 8 is filled.
- the conveyor 8 comprises a pivoting conveyor 10, an enclosure 11, and a guide plate 12 for the exact positioning of the impact point 27 of the conveyor.
- the feed container 7 has two discharge openings 13, 14, wherein the material 9b draining via the first discharge opening 13 is fed onto the sintering belt 1 or onto the material 9a already located thereon by means of a feed drum 15 and a subsequent drum chute 16.
- the effluent from the second discharge opening 14 material is given by means of the subsequent to the second discharge opening 14assischurre 17 on the sintering belt 1 and on the already thereon located grate 3.
- the second discharge opening 14 is positioned so that predominantly coarse grain, but at least a larger proportion of coarse grain is discharged, as is the case with the first discharge opening 13.
- the feed chute 17 In the case of the feed chute 17 shown in FIG. 1, there is no change in the thickness of the material fed through it over the entire charging process-without any further regulating intervention. So that the thickness of the coarse-grained layer can be preset, the feed chute 17 is pivotable about an axis 19. Alternatively or additionally, the position of the feed chute 17 in the vertical direction can also be changed (setting possibility in the vertical not shown).
- slide valves 20 are provided at the second discharge opening 14.
- the cross section of the second discharge opening 14 can be varied.
- a preheating hood 21 is arranged, which serves to preheat the discontinued on the sintering belt 1 coarse grain fraction.
- a suitable probe 22 by means of which the layer thickness of the fine grain fraction is measured. If there is a deviation from a setpoint, the working speed of the feed drum is changed accordingly.
- a suitable probe 22 may be designed as an ultrasound probe.
- a suitable probe 22 can also be formed by at least two sensors of different lengths, one of which always has to dive into the bed. When both or none of the probes are immersed, the working speed of the feeding drum is interfered with. As already explained, a regulation of the layer thickness of the coarse grain fraction is unnecessary.
- a further probe 23 is provided, by means of which the level is controlled in the feed container, which is intervened in a deviation from a desired value in the flow rate of the conveyed material of the conveyor regulating.
- a suitable probe 23 is preferably designed as an ultrasound probe.
- the pivoting conveyor 10 shown in Fig. 2 is pivotable about an axis of rotation 24 in the horizontal. As a result, the pivoting conveyor 10 can sweep the filling container 7 in the entire width and fill. On the pivoting conveyor 10 is in near the axis of rotation 24, the material to be sintered by means of a conveyor belt 25 abandoned.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Feeding Of Articles To Conveyors (AREA)
- Discharge Of Articles From Conveyors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0132504A AT413759B (en) | 2004-08-02 | 2004-08-02 | TASK DEVICE FOR A BAND SURFACE MACHINE |
PCT/EP2005/007528 WO2006015680A1 (en) | 2004-08-02 | 2005-07-12 | Charging device for a strip sintering machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1787079A1 true EP1787079A1 (en) | 2007-05-23 |
EP1787079B1 EP1787079B1 (en) | 2011-10-12 |
Family
ID=34916832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05774028A Not-in-force EP1787079B1 (en) | 2004-08-02 | 2005-07-12 | Charging device for a strip sintering machine |
Country Status (14)
Country | Link |
---|---|
US (1) | US7811086B2 (en) |
EP (1) | EP1787079B1 (en) |
KR (1) | KR101152744B1 (en) |
CN (1) | CN101036032B (en) |
AT (2) | AT413759B (en) |
AU (1) | AU2005270498B2 (en) |
CA (1) | CA2576480C (en) |
EG (1) | EG24650A (en) |
MX (1) | MX2007002182A (en) |
RU (1) | RU2375658C2 (en) |
TW (1) | TWI355363B (en) |
UA (1) | UA85269C2 (en) |
WO (1) | WO2006015680A1 (en) |
ZA (1) | ZA200701722B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT508648B1 (en) * | 2009-08-26 | 2012-12-15 | Siemens Vai Metals Tech Gmbh | LUBRICATION FOR SINTERING MATERIAL |
EP2775242A1 (en) | 2013-03-04 | 2014-09-10 | Siemens VAI Metals Technologies GmbH | Feeding chute for sinter material |
CN103449452B (en) * | 2013-09-02 | 2015-05-27 | 无锡恒诚硅业有限公司 | Feeding device for conveying white carbon black raw material into kettle |
CN104019664B (en) * | 2014-06-18 | 2016-01-20 | 马钢(集团)控股有限公司 | A kind of for the fine device that given layer is thrown in sinter mixture and put-on method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1524334A (en) * | 1920-09-23 | 1925-01-27 | Fairfield Eng Co | Adjustable revolving chute |
US3185635A (en) * | 1961-05-10 | 1965-05-25 | Us Smelting Refining And Minin | Method for producing metallurgical coke and metal-coke from both coking and non-coking coals |
AU612058B2 (en) | 1988-09-13 | 1991-06-27 | Nkk Corporation | Apparatus for charging material to be sintered into a sintering machine |
KR100431846B1 (en) * | 1999-12-27 | 2004-05-20 | 주식회사 포스코 | Apparatus for controlling the granule materials of sintering machine |
JP2001227872A (en) | 2000-02-17 | 2001-08-24 | Kawasaki Steel Corp | Device for feeding material into sintering machine and its method for using |
JP4972758B2 (en) * | 2000-03-09 | 2012-07-11 | Jfeスチール株式会社 | Raw material charging equipment for sintering machine |
KR101120117B1 (en) * | 2004-12-24 | 2012-03-23 | 주식회사 포스코 | Device for repairing bad loaded cokes in a sintering facilities |
-
2004
- 2004-08-02 AT AT0132504A patent/AT413759B/en not_active IP Right Cessation
-
2005
- 2005-07-12 WO PCT/EP2005/007528 patent/WO2006015680A1/en active Application Filing
- 2005-07-12 MX MX2007002182A patent/MX2007002182A/en unknown
- 2005-07-12 UA UAA200702142A patent/UA85269C2/en unknown
- 2005-07-12 KR KR1020077004995A patent/KR101152744B1/en not_active IP Right Cessation
- 2005-07-12 CA CA2576480A patent/CA2576480C/en not_active Expired - Fee Related
- 2005-07-12 AU AU2005270498A patent/AU2005270498B2/en not_active Ceased
- 2005-07-12 RU RU2007107613/02A patent/RU2375658C2/en not_active IP Right Cessation
- 2005-07-12 EP EP05774028A patent/EP1787079B1/en not_active Not-in-force
- 2005-07-12 AT AT05774028T patent/ATE528604T1/en active
- 2005-07-12 ZA ZA200701722A patent/ZA200701722B/en unknown
- 2005-07-12 CN CN2005800335184A patent/CN101036032B/en not_active Expired - Fee Related
- 2005-07-12 US US11/575,274 patent/US7811086B2/en not_active Expired - Fee Related
- 2005-07-14 TW TW094123867A patent/TWI355363B/en not_active IP Right Cessation
-
2007
- 2007-02-04 EG EGNA2007000123 patent/EG24650A/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2006015680A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2005270498A1 (en) | 2006-02-16 |
RU2375658C2 (en) | 2009-12-10 |
ZA200701722B (en) | 2008-07-30 |
RU2007107613A (en) | 2008-09-10 |
EP1787079B1 (en) | 2011-10-12 |
UA85269C2 (en) | 2009-01-12 |
CN101036032A (en) | 2007-09-12 |
AT413759B (en) | 2006-05-15 |
US7811086B2 (en) | 2010-10-12 |
KR20070048225A (en) | 2007-05-08 |
TW200606092A (en) | 2006-02-16 |
CN101036032B (en) | 2010-05-12 |
MX2007002182A (en) | 2007-10-16 |
ATE528604T1 (en) | 2011-10-15 |
EG24650A (en) | 2010-04-06 |
AU2005270498B2 (en) | 2011-01-20 |
US20080108006A1 (en) | 2008-05-08 |
CA2576480A1 (en) | 2006-02-16 |
ATA13252004A (en) | 2005-09-15 |
CA2576480C (en) | 2013-10-08 |
TWI355363B (en) | 2012-01-01 |
WO2006015680A1 (en) | 2006-02-16 |
KR101152744B1 (en) | 2012-06-18 |
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