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WO2007003588A1 - Dispositif metallurgique a levitation magnetique destine a la reduction de minerai - Google Patents

Dispositif metallurgique a levitation magnetique destine a la reduction de minerai Download PDF

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Publication number
WO2007003588A1
WO2007003588A1 PCT/EP2006/063718 EP2006063718W WO2007003588A1 WO 2007003588 A1 WO2007003588 A1 WO 2007003588A1 EP 2006063718 W EP2006063718 W EP 2006063718W WO 2007003588 A1 WO2007003588 A1 WO 2007003588A1
Authority
WO
WIPO (PCT)
Prior art keywords
metallurgical
moved
metallurgical device
goods
axis
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.)
Ceased
Application number
PCT/EP2006/063718
Other languages
German (de)
English (en)
Inventor
Thomas Matschullat
Uwe STÜRMER
Robert Wagner
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2007003588A1 publication Critical patent/WO2007003588A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/08—Apparatus
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a metallurgical device for reducing a good and a corresponding method.
  • Metal-containing ores and, if appropriate, metallurgical residuals are currently being reduced and melted via complexes and complex processes.
  • Pig iron is produced, for example, using sintering plants, coking plants and blast furnaces.
  • the reduction and melting of goods such as metal-containing ores require high operating expenses.
  • the fire resistance of the devices used, as well as the quality assurance cause extremely high costs.
  • Efficient cooling is a significant problem in both the reduction and melting processes. Ensuring the refractoriness of the devices used, in addition to the high cost, also has disadvantages in terms of purity, quality and sometimes also heat loss.
  • the object of the invention is to improve the reduction process of goods in the metallurgical industry.
  • a metallurgical device having a body for reducing a good, the body being designed such that the material is movable inside the body from at least one supply device to at least one discharge device, and at least partially with the body surrounding coil assembly, which is designed to levitate the goods and for its simultaneous heating.
  • the object is also achieved by a method for reducing a good in a metallurgical device, wherein the material passes through at least one feeding device in the body of the metallurgical device, wherein a Magnetic field generated by the coil assembly holds the material substantially on an axis of the body, wherein an eddy current field generated by the coil assembly heats the material, wherein the material is moved to the at least one discharge device.
  • the material after being introduced into the body of the metallurgical device, is levitated and held in suspension by the electromagnetic field generated by the coil assembly, the material is not in contact with the body inner wall. Therefore, it is not necessary to make the body as refractory as known devices. This requires a significant cost savings.
  • the quality of the reduced or molten material obtained from the material at the end of the reduction process also increases due to the effect according to the invention that contact of the material with the body is avoided.
  • the body of the metallurgical device is substantially cylindrical.
  • the body can be placed at an angle of inclination of 0 ° to 90 °.
  • the metallurgical device has a device for adjusting the angle of inclination of the body.
  • the coil arrangement for generating an electro-magnetic traveling field for moving the material along the axis of the preferably cylindrical body is formed.
  • the metallurgical device advantageously has a device for generating a gas mass flow for moving the material through the body.
  • the inner wall of the body is highly reflective coated.
  • the material in the body is reduced while being moved to a first application device for solids.
  • the material after which it has passed the first solids discharge device is melted.
  • the material is moved substantially along the axis of the body under the action of an electro-magnetic traveling field generated by means of the coil arrangement.
  • the material is moved under the action of a gas mass flow substantially along the axis of the body.
  • the product may be moved substantially along the axis of the body under the action of gravity.
  • the good is preheated by blast furnace gas.
  • the material is supplied in the form of pellets to the body of the metallurgical device.
  • FIG. 2 shows a schematic representation of the temperature profile in the body of the metallurgical device.
  • FIG. 1 shows the body 11 as an essential component of the metallurgical device 1 according to the invention.
  • the body 11 is made of austenitic steel, for example preferably a double wall with an annular gap 9.
  • the body 11 is substantially cylindrical in shape, for example, as a double-concentric body 11.
  • the body 11 can be cooled in the annular gap 9, for example by means of water and / or another cooling liquid.
  • the body 11 can be placed horizontally.
  • the body 11 can also be set in an angle ⁇ deviating from the horizontal by up to 90 °.
  • the metallurgical device 1 may have a device not shown in the drawing for adjusting the inclination angle ⁇ of the body 11.
  • the inclination angle ⁇ of the body 11 can preferably be adjusted between 0 ° and 90 °.
  • the essentially cylindrical body 11 has an axis A, along which the material 8 moves in the direction of movement x.
  • the material 8 passes into the body 11 via feed devices 6, 7.
  • the feed devices 6, 7 can be designed, for example, as an axial feed device 6 and / or as a radial feed device 7.
  • the raw material to be used as good 8 ie, for example, residual metallurgy materials and / or ores, consisting of metal oxides, elemental metals, gait and / or other constituents, is prepared accordingly before being introduced into the body 11.
  • the Gut 8 before being fed into the body 11, the necessary reducing agent content, e.g. Coal and other ingredients and preferably a corresponding binder added.
  • the stock 8, before being supplied to the body 11, is prepared by known forming methods, such as e.g. Pelletizing into a suitable form and e.g. prepared by drying on the taking place in the body 11 reduction and optionally on the additional melt treatment.
  • known forming methods such as e.g. Pelletizing into a suitable form and e.g. prepared by drying on the taking place in the body 11 reduction and optionally on the additional melt treatment.
  • the body 11 is at least partially surrounded by a coil arrangement 2, wherein the coil arrangement 2 comprises one or more inductive coils in a suitable arrangement.
  • the coil arrangement 2 comprises one or more inductive coils in a suitable arrangement.
  • a magnetic field is generated in the interior of the body 11, by means of which the material 8 is suspended in the body 11 so that there is no contact between the body inner wall 10 and the goods 8.
  • an eddy current field is generated which causes an increase in the temperature in the material 8 to be reduced.
  • the good 8 is due to gravity, moved in the direction x by the body 11.
  • the movement direction x is parallel to the axis A of the body 11.
  • the movement of the material 8 in the body 11 can be influenced, in particular by a braking action of the electro-magnetic field.
  • the body inner wall 10 has a highly reflective coating, by means of which heat losses are reduced.
  • the reflectance of the coating of the inner body wall 10 is greater than 90%, preferably greater than 99%.
  • the material 8 After the material 8 has been introduced into the body 11, it is levitated and suspended by the electromagnetic field generated by means of the coil assembly 2 in a substantially central position, i.e. close to the axis A of the body 11. While the material 8 moves in the body 11 near the axis A in the direction of movement x to a first discharge device 5 for solids, the interior of the body 11, the necessary energy is supplied to allow the reduction of the material 8 to take place with the embedded reducing agent.
  • the movement ie the promotion of the goods 8, for example, by a magnetic traveling field, which can be generated for example by means of the coil assembly 2.
  • the promotion of the goods 8 substantially gravity along the axis A, if the body 11 is not in a horizontal position, ie, if the angle ⁇ is different from 0 ° is.
  • the angle ⁇ is also referred to as the inclination angle ⁇ .
  • the promotion of the material 8 can also be done by a gas mass flow, preferably consisting of resulting reduction gas with other gas additives. It is possible to combine any of the above-mentioned and possibly further funding possibilities.
  • the reduced material 8 can optionally be discharged at different metallization degrees by preferably radially arranged discharge devices 4, 5.
  • the product 8 may optionally be further heated and melted in the body 11 until the phase separation between metal and gangue, i. Slag.
  • Metal and gait can be separated within the body 11 by material-related differences, such as the density difference between liquid metal and slag. It is also a common discharge of metal and slag, i. Gait, possible.
  • At the radially arranged discharge device 4 is a liquid discharge of liquid metal or liquid metal and slag to downstream, not shown aggregates of the metallurgical device 1. In principle, an at least partially fixed discharge to the discharge device 4 is possible. A discharge of slag can take place at the discharge device 3, which is preferably arranged axially.
  • blast furnace gas G can be used to preheat the material 8 or else in other preferably metallurgical processes with energy input.
  • Top gas G which in particular consists of one or more of the substances CO, CO2, N 2 , H 2 or H 2 O can escape through the feed devices 6, 7.
  • FIG. 2 schematically shows the development of the temperature T in the interior of the body 11 along the location in the direction of movement x.
  • FIG. 2 shows both the course of the mean temperature T 2 of the goods 8 and the course of the gas temperature Ti shown.
  • the illustrated curve of the gas temperature Ti preferably relates to the course of the temperature of the top gas.
  • the principle of the process occurring in the body 11, which comprises the heating of the material 8, is comparable to the process in a countercurrent heat exchanger.
  • a reduction of the material 8 takes place up to a first location Xi (see also FIG. 1).
  • a further venue x 2 see also FIG. 1
  • melting and separation of the phases of the material 8 take place.
  • the heating curve of the material 8 ie the curve which describes the course of the average temperature T 2 of the material 8, the melting temperature T M and the superheat temperature T ⁇ are indicated.
  • the invention relates to a method for reduction and for
  • a metallurgical device 1 which can be manufactured at a lower cost and which operates more reliably and with a lesser process time than is known using conventional technologies.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé de réduction et de liquéfaction de minerais métallifères préparés, et de résidus métallifères, appelés produit (8). Le produit (8) est déplacé au travers d'un corps (11) par gravité et/ou sous l'effet d'un champ d'ondes électromagnétiques progressives, et maintenu en lévitation sous l'effet d'un champ magnétique produit par un système de bobines (2). Le système de bobines (2) produit par ailleurs un champ de courants de Foucault afin d'obtenir la température nécessaire à la réduction et/ou à la liquéfaction à l'intérieur du corps (11). Comme le produit est en lévitation dans le corps (11), aucun contact n'est créé entre le produit (8) et la paroi intérieure du corps (10), et il n'est donc pas nécessaire de pourvoir le corps (11) de matériau à fort pourvoir ignifugeant. L'invention concerne également un dispositif métallurgique (1) pouvant être fabriqué à coûts réduits, s'avérant plus fiable, et présentant des durées de traitement inférieures par rapport aux techniques habituelles.
PCT/EP2006/063718 2005-07-04 2006-06-30 Dispositif metallurgique a levitation magnetique destine a la reduction de minerai Ceased WO2007003588A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510031170 DE102005031170B3 (de) 2005-07-04 2005-07-04 Metallurgische Vorrichtung
DE102005031170.9 2005-07-04

Publications (1)

Publication Number Publication Date
WO2007003588A1 true WO2007003588A1 (fr) 2007-01-11

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ID=36933599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/063718 Ceased WO2007003588A1 (fr) 2005-07-04 2006-06-30 Dispositif metallurgique a levitation magnetique destine a la reduction de minerai

Country Status (2)

Country Link
DE (1) DE102005031170B3 (fr)
WO (1) WO2007003588A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112325622A (zh) * 2020-11-05 2021-02-05 陈开琴 一种具有立体浮动功能的干燥设备及其实施方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU722969A1 (ru) * 1978-03-06 1980-03-25 Криворожское Отделение Украинского Государственного Проектного Института "Металлургавтоматика" Способ стабилизации уровн ферромагнитного материала на конвейерной машине
US4678024A (en) * 1986-06-10 1987-07-07 The United States Of America As Represented By The United States Department Of Energy Horizontal electromagnetic casting of thin metal sheets
JPS63109123A (ja) * 1986-10-24 1988-05-13 Nkk Corp 高温フロ−テイング炉および高温フロ−テイング炉のガス循環方法
JPH03107404A (ja) * 1989-09-22 1991-05-07 Daido Steel Co Ltd 金属粉末の製造方法および製造装置
FR2685449A1 (fr) * 1991-12-23 1993-06-25 Soteco Four de pyrolyse sous basse pression pour la destruction de dechets organiques industriels.
EP0587258A2 (fr) * 1989-11-09 1994-03-16 Crucible Materials Corporation Procédé de préparation de poudre de titane
JPH07117848A (ja) * 1993-10-22 1995-05-09 Ebara Corp 磁気浮上搬送装置
JPH08302433A (ja) * 1995-04-28 1996-11-19 Nippon Steel Corp 焼結鉱の製造方法
DE19960575A1 (de) * 1999-12-15 2001-06-21 Krupp Polysius Ag Verfahren und Anlage zur Reduktion von Feinerzen

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
CH279684A (de) * 1949-10-04 1951-12-15 Edipo Etablissement Pour Le De Verfahren und Ofen zur Reduktion von Metalloxyden.
US5411570A (en) * 1993-06-16 1995-05-02 Iscor Limited Steelmaking process
RU2232364C2 (ru) * 1998-07-17 2004-07-10 Ипкор Н.В. Индукционная печь и способ восстановления и выплавки металла с ее использованием

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU722969A1 (ru) * 1978-03-06 1980-03-25 Криворожское Отделение Украинского Государственного Проектного Института "Металлургавтоматика" Способ стабилизации уровн ферромагнитного материала на конвейерной машине
US4678024A (en) * 1986-06-10 1987-07-07 The United States Of America As Represented By The United States Department Of Energy Horizontal electromagnetic casting of thin metal sheets
JPS63109123A (ja) * 1986-10-24 1988-05-13 Nkk Corp 高温フロ−テイング炉および高温フロ−テイング炉のガス循環方法
JPH03107404A (ja) * 1989-09-22 1991-05-07 Daido Steel Co Ltd 金属粉末の製造方法および製造装置
EP0587258A2 (fr) * 1989-11-09 1994-03-16 Crucible Materials Corporation Procédé de préparation de poudre de titane
FR2685449A1 (fr) * 1991-12-23 1993-06-25 Soteco Four de pyrolyse sous basse pression pour la destruction de dechets organiques industriels.
JPH07117848A (ja) * 1993-10-22 1995-05-09 Ebara Corp 磁気浮上搬送装置
JPH08302433A (ja) * 1995-04-28 1996-11-19 Nippon Steel Corp 焼結鉱の製造方法
DE19960575A1 (de) * 1999-12-15 2001-06-21 Krupp Polysius Ag Verfahren und Anlage zur Reduktion von Feinerzen

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198045, Derwent World Patents Index; Class M24, AN 1980-80143C, XP002398600 *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 353 (C - 530) 21 September 1988 (1988-09-21) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 294 (M - 1140) 25 July 1991 (1991-07-25) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 08 29 September 1995 (1995-09-29) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112325622A (zh) * 2020-11-05 2021-02-05 陈开琴 一种具有立体浮动功能的干燥设备及其实施方法
CN112325622B (zh) * 2020-11-05 2021-12-14 苏州许本科技有限公司 一种具有立体浮动功能的干燥设备及其实施方法

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