EP1941066B1 - Verfahren zum chargieren von einsatzstoffen - Google Patents

Verfahren zum chargieren von einsatzstoffen Download PDF

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Publication number
EP1941066B1
EP1941066B1 EP06792381A EP06792381A EP1941066B1 EP 1941066 B1 EP1941066 B1 EP 1941066B1 EP 06792381 A EP06792381 A EP 06792381A EP 06792381 A EP06792381 A EP 06792381A EP 1941066 B1 EP1941066 B1 EP 1941066B1
Authority
EP
European Patent Office
Prior art keywords
charging
fines
charging method
vessel
charged
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.)
Active
Application number
EP06792381A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1941066A2 (de
Inventor
Hans Werner Bogner
Guenther Brunnbauer
Franz Lasinger
Bernhard Schuerz
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.)
Primetals Technologies Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH and Co
Siemens VAI Metals Technologies GmbH Austria
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
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Application filed by Siemens VAI Metals Technologies GmbH and Co, Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH and Co
Priority to AT06792381T priority Critical patent/ATE437966T1/de
Priority to PL06792381T priority patent/PL1941066T3/pl
Publication of EP1941066A2 publication Critical patent/EP1941066A2/de
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Publication of EP1941066B1 publication Critical patent/EP1941066B1/de
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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 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
    • F27D3/10—Charging directly from hoppers or shoots

Definitions

  • the invention relates to a method for charging feedstocks, in particular coke or ore, and optionally separated fines of feedstocks, for processing in a metallurgical vessel, in particular a blast furnace, for the production of metal or metal precursors, in particular steel or steel precursors, with a charging device, the a conveying means and at least one feeding device for supplying the charging device.
  • the object of the invention is achieved by means of the method for charging and according to the features of the characterizing part of claim 1.
  • the inventive method provides for a charging of the starting materials and optionally of fines in a metallurgical vessel, wherein for setting a targeted distribution of the charged materials, the charging is carried out spirally, wherein the spiral is formed from outside to inside.
  • the conveyor is guided along a spiral, so that the charged materials are deposited along a spiral. Due to the stepless guidance of the conveying means there is a continuous change of the radial position while the position changes in the circumferential direction. The change of the radial position takes place continuous and continuous as the position is changed circumferentially. Due to these measures, predefined coverages in the vessel with the charged substances can be achieved. Compared to conventional methods, it is possible to set more complex coverages or even more uniformly charge them.
  • the conveyor is infinitely rotated about an axis and simultaneously inclined about a further axis.
  • This biaxial guide with simultaneous change of inclination, allows charging on the entire surface of the vessel being charged. It is essential that the continuous and simultaneous positioning, so that a complete charge on the entire inner cross-sectional area of the metallurgical vessel is possible.
  • the control of the charging device and the charging are carried out according to a predefined filling plan.
  • the charging according to a filling plan ensures advantageous operation of the method in the metallurgical vessel.
  • the filling plan is set on the basis of a measured actual temperature distribution and a desired temperature distribution of the solids present in the vessel. Due to the clearly more accurate charging, a target temperature distribution in the vessel can be adjusted even better.
  • the feed may be e.g. the für gasungs be influenced in Möller a blast furnace, wherein the fürgasungs represented as a temperature distribution in the vessel. Due to the spiral charging deviations from a target temperature distribution can be even better avoided.
  • the feed of the starting materials and optionally of the fine fraction from the feeder is volume-controlled.
  • material is introduced into the vessel in accordance with the spiral shape, whereby due to the changing length of the turns of the spiral, the amount of material is regulated, the quantity per unit of time thus adjusting the mass flow.
  • Fines are understood to mean feedstocks with small particle sizes which, for procedural reasons, are separated off, usually screened off. In this case, fine particles are understood to mean particle sizes in ores of up to 8 mm and cokes of up to 24 mm.
  • the charging from the supply device takes place in batches.
  • the charging takes place in closed quantities, so not constantly.
  • the next remaining cycle is used to load a further completed quantity. It is advantageous that alternately completed amounts of material can be introduced and no complex valve devices for interrupting the flow of material are needed. Furthermore, it is possible to charge pre-weighed quantities or mixtures.
  • fine fraction when fine fraction is being charged, it is always introduced into the supply device before the other starting materials. Before the entry of the starting materials or the fine fraction into the vessel, these substances are first introduced into the feed device. Due to the fact that the fine fraction is introduced first, the charging of the fine fraction into the vessel always takes place first and before the other starting materials. Due to the spiral charging, the fines are thus introduced in the peripheral areas and the starting materials in the spirals of the spiral located further inside. In the event that no fine fraction is to be introduced, the charging of the starting materials takes place over the entire spiral, ie also at the edge regions.
  • the proportion by weight of fines is from 2% to 20%, in particular from 8% to 12%, of the total amount charged.
  • the proportion of fines can be selected according to the adaptation of the method, in particular on the characteristics of the process, which will operate in the metallurgical vessel and can be considered on the specific conditions in the vessel.
  • the inventive method provides that the fine fraction is charged spirally and predominantly on the edge region of the vessel, wherein the radial end point of the spiral region was charged to the fines from a feeder, the radial starting point for a subsequent charging of fines, in particular from a further feed device, so that the fine fraction is uniformly distributed to the edge region.
  • Controlled charging makes it possible to enter the vessel with exact position.
  • the Gasification of the introduced material significantly, as it also affects the process temperature and the temperature distribution. Due to the other gas permeability of fines, it is necessary to charge these substances targeted and evenly at the edge regions.
  • the entry is made in the edge area according to the spiral shape.
  • the feedstock also in the feeder follows.
  • the now charged fine fraction is introduced on a spiral, wherein the starting point for the now charged fine fraction in terms of its circumferential position directly adjoins the previously charged fines. It is crucial that uniform charging takes place in the circumferential direction, wherein the individual fines must not be present in the same vertical position.
  • the charging of the starting materials takes place in the spiral over 6 to 14, in particular 9 to 11 turns.
  • the turns By choosing the turns, a corresponding adaptation to the dimensions of the metallurgical vessel can take place.
  • the number of turns can also be increased if necessary, if a special filling is required.
  • the charging of the fines in the two outer, in particular only in the outermost, turn (s) of the spiral takes place. It has proved to be advantageous to charge fines only in the outermost regions, since here a reduced gas permeability does not have a negative effect on the temperature distribution. Due to the charging only at the outermost turns, a high reproducibility in the charging is achieved and thus a very uniform distribution of fines.
  • the inclination of the conveying means is set as a function of the rotational speed and taking into account the actual weight of starting materials and optionally fine fraction in the feeding device, for producing a predefined distribution in the vessel. Due to the constant tracking of the weight and thus also the weight of already charged material, the position in which the material is charged is traceable via the rotational speed. Thus, according to this information, the charge of subsequent material can be adjusted so that location quantity in certain positions can be adjusted. This control allows the setting of a predefined filling.
  • An advantageous embodiment of the method according to the invention provides that the inclination and the speed of the conveyor are each controlled by frequency converter. This embodiment allows a continuous and independent control for both movements, so that the inventive method can be implemented.
  • a special embodiment of the method according to the invention provides that the supply of the conveyor takes place alternately from different feed devices, wherein at least two supply devices are provided.
  • the supply of the conveyor for entry into the metallurgical vessel can be made alternately from two feeders, which can each be supplied in advance with feedstocks or with fine material. By arranging two or more feeders, it is possible to adjust the feedstocks and the fine fraction individually in order to be able to charge even more flexibly.
  • the feed device comprises at least one container for storing the starting materials and optionally fine fraction.
  • the starting materials or the fine fraction can be introduced in advance, so that then the entire contents of the container can be charged.
  • the inclination and the rotational speed of the conveying means are controlled such that the fine fraction is charged essentially over a complete turn of the spiral.
  • the inclination and the rotational speed of the conveying means are controlled in the radial direction on the inclined surfaces of the charged material, taking into account natural sliding lines.
  • a target temperature profile is set. It may be necessary to charge over the cross section of the vessel unevenly, with a bed of material is set, the surface is not flat, but has inclinations.
  • the surface is not flat, but has inclinations.
  • the fine fraction consists of a mixture of fines of coke and ore.
  • Fine fractions are obtained in the processing of ores but also of coke.
  • these fines are often processed, e.g. can be done in a sinter plant.
  • this treatment is very complicated and expensive.
  • fines which are mostly produced by rubbing, are mixed and then mixed together with e.g. Ores or coke used.
  • the fines can be mixed as needed.
  • the mixture has a coke content of 5% to 40%, in particular 15% to 30%.
  • This special mixture takes account of the fact that the fine fraction of ore must be supplied by means of coke as a reducing agent.
  • coke and ore are charged alternately, optionally together with the fines and / or additives. It has proven to be advantageous, the materials coke and ore or optionally also fines and / or additives not as mixtures but stratified to introduce into the metallurgical vessel, being charged in accordance with alternately. By this type of charging can be taken even more targeted attention to the metallurgical features and an advantageous metallurgical process can be ensured.
  • Fig. 1 the charge according to the invention is shown schematically.
  • a metallurgical vessel 1 is charged from above, the upper end of the vessel is not shown.
  • a conveyor 2 is provided for charging.
  • This is pivotally mounted about an axis 5 in a particular embodiment, wherein the inclination angle ⁇ of the conveyor 2 can be changed.
  • the conveyor 2 can be rotated about the vertical axis 6.
  • the outlet opening 3 of the conveying means 2 describes a spiral shape.
  • the inclination of the conveyor is thereby changed so that a leading from outside to inside spiral 4 is described.
  • the material charged by means of the conveying means 2 is introduced on a spiral shape into a container on a surface and a corresponding filling 10 is produced.
  • the entire amount of fines and starting materials is introduced into the feeder and then charged by means of the conveyor 2.
  • a charging cycle then refers to the total amount of material that is in the feeder.
  • the feedstocks are after the fines were charged, distributed to the remaining turns of the spiral 4, this being done according to a predefined filling plan.
  • the speed of the conveyor 2, the inclination ⁇ and the amount of feed per unit time from the feeder can be adjusted to set a desired charge become. It has proven to be advantageous to provide at least two feeders, so that alternately different materials can be introduced and a layered buildup is made possible.
  • a charge in a metallurgical vessel is shown.
  • the starting materials are introduced in layers.
  • Fig. 3 shows a possible bed of charge in a representation showing the proportions of the charged materials (ordinate) over the distance R from the center axis M of the metallurgical vessel (abscissa). Near the edges are the fines 14 to see that are charged between coke 15 and ore 16 and other aggregates 17.
  • the illustration is an example, the actual charge is adjusted according to a target temperature distribution.
  • Fig. 4 shows by way of example a desired temperature distribution 18 in a metallurgical vessel, such as in a blast furnace, and an actual temperature distribution 19.
  • the abscissa shows the distance from the central axis of the metallurgical vessel, the ordinate represents the temperatures. To such deviations minimize, the temperature distribution is specifically influenced and changed by the charge and the charge through a modified fürungs .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Air Transport Of Granular Materials (AREA)
EP06792381A 2005-10-24 2006-10-05 Verfahren zum chargieren von einsatzstoffen Active EP1941066B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT06792381T ATE437966T1 (de) 2005-10-24 2006-10-05 Verfahren zum chargieren von einsatzstoffen
PL06792381T PL1941066T3 (pl) 2005-10-24 2006-10-05 Sposób ładowania materiałów wsadowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0173505A AT502479B1 (de) 2005-10-24 2005-10-24 Verfahren und vorrichtung zum chargieren von einsatzstoffen
PCT/EP2006/009632 WO2007048490A2 (de) 2005-10-24 2006-10-05 Verfahren und vorrichtung zum chargieren von einsatzstoffen

Publications (2)

Publication Number Publication Date
EP1941066A2 EP1941066A2 (de) 2008-07-09
EP1941066B1 true EP1941066B1 (de) 2009-07-29

Family

ID=37897360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792381A Active EP1941066B1 (de) 2005-10-24 2006-10-05 Verfahren zum chargieren von einsatzstoffen

Country Status (11)

Country Link
US (1) US8034157B2 (es)
EP (1) EP1941066B1 (es)
CN (1) CN101297047B (es)
AT (2) AT502479B1 (es)
BR (1) BRPI0617717B1 (es)
DE (1) DE502006004406D1 (es)
ES (1) ES2330473T3 (es)
PL (1) PL1941066T3 (es)
RU (1) RU2412414C2 (es)
UA (1) UA93216C2 (es)
WO (1) WO2007048490A2 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE555357T1 (de) * 2009-07-06 2012-05-15 Siemens Ag Vorrichtung zur positionierung eines materialkorbs
CN114371113A (zh) * 2021-12-07 2022-04-19 北京科技大学 一种测定焦炭块度对高炉透气透液性影响的装置及方法

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU59207A1 (es) * 1969-07-31 1969-12-10 Wurth Anciens Ets Paul
LU65537A1 (es) 1972-06-16 1972-10-25
LU65660A1 (es) 1972-07-05 1972-10-30
US3929240A (en) * 1972-07-05 1975-12-30 Wurth Anciens Ets Paul Shaft furnace charging process
US4066443A (en) * 1975-09-30 1978-01-03 International Minerals And Chemical Corporation Process of stabilizing the operation of blast furnaces for producing molten iron
JPS5528308A (en) 1978-08-15 1980-02-28 Nippon Steel Corp Operating method for blast furnace
LU80630A1 (fr) 1978-12-08 1979-04-09 Wurth Anciens Ets Paul Procede et installation de chargement d'un four a cuve
JPS58123808A (ja) 1982-01-14 1983-07-23 Sumitomo Metal Ind Ltd 高炉の原料装入方法
LU84303A1 (fr) * 1982-07-28 1984-03-22 Wurth Paul Sa Procede et dispositif de commande du mouvement d'une goulotte oscillante et application a une installation de chargement d'un four a cuve
JPS6013004A (ja) 1983-07-01 1985-01-23 Nippon Steel Corp 高炉操業法
LU85810A1 (fr) 1985-03-15 1986-10-06 Wurth Paul Sa Dispositif de repartition de la matiere de chargement dans une enceinte de stockage pour l'alimentation d'un four a cuve
LU85811A1 (fr) * 1985-03-15 1986-10-06 Wurth Paul Sa Installation de chargement d'un four a cuve
JPS61227108A (ja) 1985-03-30 1986-10-09 Nippon Steel Corp ベルレス式高炉の原料装入方法
LU85892A1 (fr) 1985-05-10 1986-12-05 Wurth Paul Sa Procede de controle du chargement d'un four a cuve
US4806056A (en) * 1986-07-07 1989-02-21 Waste Recovery, Inc. Modular fuel metering apparatus and method for use thereof
JPS63140006A (ja) 1986-12-01 1988-06-11 Kawasaki Steel Corp 高炉原料装入方法
US4776884A (en) * 1987-05-19 1988-10-11 China Steel Corporation Process for determining the arrangement of the layered charges in a blast furnace prior to smelting
CA1338098C (en) * 1987-09-03 1996-03-05 Masataka Shimizu Method for operating blast furnace
JPH01119612A (ja) 1988-06-25 1989-05-11 Nippon Steel Corp 高炉の原料装入方法
AT396482B (de) 1991-05-29 1993-09-27 Voest Alpine Ind Anlagen Anlage mit einem schacht, insbesondere reduktionsschachtofen
JPH06145731A (ja) * 1992-11-04 1994-05-27 Kawasaki Steel Corp 高炉への原料装入方法及び装置
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US7148669B2 (en) 2004-02-02 2006-12-12 The Regents Of The University Of Colorado, A Body Corporate Predictive digital current controllers for switching power converters

Also Published As

Publication number Publication date
EP1941066A2 (de) 2008-07-09
CN101297047A (zh) 2008-10-29
PL1941066T3 (pl) 2010-01-29
BRPI0617717A2 (pt) 2011-08-02
AT502479B1 (de) 2007-04-15
AT502479A4 (de) 2007-04-15
DE502006004406D1 (es) 2009-09-10
US20080282841A1 (en) 2008-11-20
RU2008120664A (ru) 2009-12-10
ES2330473T3 (es) 2009-12-10
WO2007048490A2 (de) 2007-05-03
WO2007048490A3 (de) 2007-07-05
CN101297047B (zh) 2012-07-18
BRPI0617717B1 (pt) 2015-06-02
UA93216C2 (ru) 2011-01-25
US8034157B2 (en) 2011-10-11
RU2412414C2 (ru) 2011-02-20
ATE437966T1 (de) 2009-08-15

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