EP0286844A1 - Procédé et installation de préparation de briquettes chaudes sans liant - Google Patents

Procédé et installation de préparation de briquettes chaudes sans liant Download PDF

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Publication number
EP0286844A1
EP0286844A1 EP88103979A EP88103979A EP0286844A1 EP 0286844 A1 EP0286844 A1 EP 0286844A1 EP 88103979 A EP88103979 A EP 88103979A EP 88103979 A EP88103979 A EP 88103979A EP 0286844 A1 EP0286844 A1 EP 0286844A1
Authority
EP
European Patent Office
Prior art keywords
fuel
hot
residues
fluidized bed
mixture
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
Application number
EP88103979A
Other languages
German (de)
English (en)
Other versions
EP0286844B1 (fr
Inventor
Werner Kaas
Heinz Ing. Maas (Grad)
Rudolf Dr. Auth
Lothar Seidelmann
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Stahl 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 Thyssen Stahl AG filed Critical Thyssen Stahl AG
Priority to AT88103979T priority Critical patent/ATE69270T1/de
Publication of EP0286844A1 publication Critical patent/EP0286844A1/fr
Application granted granted Critical
Publication of EP0286844B1 publication Critical patent/EP0286844B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C22B1/24—Binding; Briquetting ; Granulating
    • 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
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates

Definitions

  • residues are finely divided dusts, sludges, granules and other substances that contain iron oxides or other metal oxides, such as blast furnace filter dust, oxygen converter filter dust, filter dust from the hall dedusting of steelworks, electric furnace filter dust, steelworks filter sludge, etc. reintroduce into the production process to recover the valuable components contained in the residues; in many cases, however, this is associated with great difficulty or not possible at all because of the nature of the residues, in particular because of the fine particle size. In this case, there is often only the possibility to deposit the residues, which creates environmental protection problems.
  • the invention has for its object to avoid the disadvantages described and to propose a method and an associated system with which residues, which essentially do not contain any combustible components, can be processed into binderless hot briquettes.
  • a finely divided fuel is mixed with the finely divided residues.
  • This cold mixture is then supplied with sensible heat from the outside until the fuel ignites. Because of the relatively low temperature level, this heat supply can be carried out economically.
  • the difficult to set high hot briquetting temperatures of 600 to 900 ° C, however, are achieved by the heat generated when the mixed fuel burns; Since the heat of combustion can be transferred directly to the fine-particle residue without major losses, this process step can be carried out economically.
  • the method according to claim 2 is advantageously carried out in a fluidized bed / fluidized bed and according to claim 4 in a rotary tube.
  • the fuels used advantageously according to claim 6, such as lignite high-temperature coke, lignite coke, hard coal coke and lignite or hard coal should have a low ignition temperature (250 to 450 ° C) to the amount of the outside keep sensible heat supplied as low as possible until the fuel ignites.
  • the amount of fuel added also depends on the calorific value of the fuel and is dependent on the properties of the respective residue, e.g. Water content and specific heat capacity, depending.
  • the mixture of finely divided residue and fuel is additionally supplied with heat which can be felt from the outside, even after the onset of combustion of the fuel, in order to accelerate the briquetting temperature of 600 to 900 ° C.
  • the residues to be briquetted are stored in silos 2.
  • the finely divided residue is conveyed to a mixer 4 via a discharge device 3.
  • Finely divided fuel is added from a silo 1 via a metering 5 and mixed in the mixer 4 with the finely divided residue.
  • the mixture of fuel and finely divided residue is supplied with heat which can be felt from the outside by a hot oxidizing gas stream 7, which also serves as a fluidizing gas stream.
  • the hot oxidizing gas stream 7 is turned off in a combustion chamber 8 Fuel gas 9 and air 10 are generated.
  • the finely divided residue After reaching the ignition temperature of the fuel, it reacts with the oxidizing gas stream; As a result of the heat of combustion generated, the finely divided residue is heated up during its migration over the fluidized bed and has hot briquetting temperature at the end of the fluidized bed.
  • the heated residue 12 is then fed directly to a briquetting press 13 and pressed into hot briquettes.
  • the hot briquettes On a downstream cooling belt 14, the hot briquettes are cooled to ambient temperature by ambient air 15 with the aid of a fan 16.
  • the exhaust air generated above the fluidized bed is fed to a dedusting device, not shown, via a blower 11.
  • a rotary tube 6a is arranged in place of the fluidized bed 6, into which the hot oxidizing gas stream 7 is introduced.
  • the filter dust of Example 1 comes from the filter system of a stainless steel plant with an electric furnace and AOD converter, the coarse sludge from Example 2 was separated in the filter system of an oxygen steel plant with wet dedusting, and the steel plant dust from Example 3 comes from the room dust removal of an oxygen steel plant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
EP88103979A 1987-04-02 1988-03-14 Procédé et installation de préparation de briquettes chaudes sans liant Expired - Lifetime EP0286844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88103979T ATE69270T1 (de) 1987-04-02 1988-03-14 Verfahren und anlage zur herstellung von bindemittellosen heissbriketts.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3711130 1987-04-02
DE3711130A DE3711130C1 (de) 1987-04-02 1987-04-02 Verfahren und Anlage zur Herstellung von bindemittellosen Heissbriketts

Publications (2)

Publication Number Publication Date
EP0286844A1 true EP0286844A1 (fr) 1988-10-19
EP0286844B1 EP0286844B1 (fr) 1991-11-06

Family

ID=6324722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103979A Expired - Lifetime EP0286844B1 (fr) 1987-04-02 1988-03-14 Procédé et installation de préparation de briquettes chaudes sans liant

Country Status (7)

Country Link
US (1) US4872906A (fr)
EP (1) EP0286844B1 (fr)
JP (1) JPS63262427A (fr)
KR (1) KR880012779A (fr)
AT (1) ATE69270T1 (fr)
DE (2) DE3711130C1 (fr)
ES (1) ES2027717T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5104446A (en) * 1989-09-29 1992-04-14 Iron Tiger Investment Inc. Agglomeration process
BE1010700A5 (nl) † 1996-10-17 1998-12-01 Trading And Recycling Company Werkwijze voor het verwerken van roestvaste staalslakken.

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009397B (de) * 1953-04-23 1957-05-29 F J Collin Ag Zur Verwertung V Verfahren zur Verhuettung von Feinerzen oder Metalloxyden
US3174846A (en) * 1963-04-10 1965-03-23 United States Steel Corp Method of briquetting iron oxide fines
GB1096315A (en) * 1964-03-20 1967-12-29 Coal Industry Patents Ltd Briquettes composed of inorganic compounds and carbonaceous material
GB1181874A (en) * 1966-05-17 1970-02-18 Boliden Ab A method of Converting a Finely-Grained Material to a more Coarsely-Grained Material
US3941582A (en) * 1969-06-12 1976-03-02 Baum Jesse J Direct reduced iron
LU70523A1 (fr) * 1974-07-12 1976-05-31
US4123209A (en) * 1977-04-18 1978-10-31 Moore James E Briquetting plant
EP0012363A1 (fr) * 1978-12-07 1980-06-25 Krupp Polysius Ag Procédé et dispositif pour la réduction de minerais
EP0097292A2 (fr) * 1982-06-22 1984-01-04 Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte Procédé et installation de fabrication à chaud de briquettes sans liant
DE3440037A1 (de) * 1983-12-06 1985-06-13 Laborlux S.A., Esch, Alzette Verfahren zur heissbrikettierung feinkoerniger stoffe und zur weiterverarbeitung der heissbriketts
DE3529084C1 (de) * 1985-08-14 1986-10-16 Thyssen Stahl AG, 4100 Duisburg Verfahren und Anlage zur Herstellung bindemittelloser Heissbriketts
EP0217139A1 (fr) * 1985-09-09 1987-04-08 LABORLUX S.A. Société Luxembourgeoise de Laboratoires d'Analyses, d'Etudes et d'Essais de Matériaux Procédé pour traiter des matières résiduelles de l'industrie de l'acier contenant du zinc et du plomb en vue d'un traitement ultérieur métallurgique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870507A (en) * 1973-05-14 1975-03-11 Ferro Carb Agglomeration Control of pollution by recycling solid particulate steel mill wastes

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009397B (de) * 1953-04-23 1957-05-29 F J Collin Ag Zur Verwertung V Verfahren zur Verhuettung von Feinerzen oder Metalloxyden
US3174846A (en) * 1963-04-10 1965-03-23 United States Steel Corp Method of briquetting iron oxide fines
GB1096315A (en) * 1964-03-20 1967-12-29 Coal Industry Patents Ltd Briquettes composed of inorganic compounds and carbonaceous material
GB1181874A (en) * 1966-05-17 1970-02-18 Boliden Ab A method of Converting a Finely-Grained Material to a more Coarsely-Grained Material
US3941582A (en) * 1969-06-12 1976-03-02 Baum Jesse J Direct reduced iron
LU70523A1 (fr) * 1974-07-12 1976-05-31
US4123209A (en) * 1977-04-18 1978-10-31 Moore James E Briquetting plant
EP0012363A1 (fr) * 1978-12-07 1980-06-25 Krupp Polysius Ag Procédé et dispositif pour la réduction de minerais
EP0097292A2 (fr) * 1982-06-22 1984-01-04 Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte Procédé et installation de fabrication à chaud de briquettes sans liant
DE3440037A1 (de) * 1983-12-06 1985-06-13 Laborlux S.A., Esch, Alzette Verfahren zur heissbrikettierung feinkoerniger stoffe und zur weiterverarbeitung der heissbriketts
DE3529084C1 (de) * 1985-08-14 1986-10-16 Thyssen Stahl AG, 4100 Duisburg Verfahren und Anlage zur Herstellung bindemittelloser Heissbriketts
EP0217139A1 (fr) * 1985-09-09 1987-04-08 LABORLUX S.A. Société Luxembourgeoise de Laboratoires d'Analyses, d'Etudes et d'Essais de Matériaux Procédé pour traiter des matières résiduelles de l'industrie de l'acier contenant du zinc et du plomb en vue d'un traitement ultérieur métallurgique

Also Published As

Publication number Publication date
US4872906A (en) 1989-10-10
EP0286844B1 (fr) 1991-11-06
DE3865999D1 (de) 1991-12-12
KR880012779A (ko) 1988-11-29
DE3711130C1 (de) 1988-07-21
ATE69270T1 (de) 1991-11-15
JPS63262427A (ja) 1988-10-28
ES2027717T3 (es) 1992-06-16

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