BRPI0413371A - process and apparatus for reducing solids containing iron oxide - Google Patents

process and apparatus for reducing solids containing iron oxide

Info

Publication number
BRPI0413371A
BRPI0413371A BRPI0413371-4A BRPI0413371A BRPI0413371A BR PI0413371 A BRPI0413371 A BR PI0413371A BR PI0413371 A BRPI0413371 A BR PI0413371A BR PI0413371 A BRPI0413371 A BR PI0413371A
Authority
BR
Brazil
Prior art keywords
solids
iron oxide
stage
reducing
containing iron
Prior art date
Application number
BRPI0413371-4A
Other languages
Portuguese (pt)
Inventor
Stuart Sneyd
Martin Hirsch
Dirk Nuber
Original Assignee
Outokumpu Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34129525&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0413371(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Outokumpu Oy filed Critical Outokumpu Oy
Publication of BRPI0413371A publication Critical patent/BRPI0413371A/en

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
    • C22B5/18—Reducing step-by-step
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • 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
    • C22B1/248—Binding; Briquetting ; Granulating of metal scrap 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • C22B5/14—Dry methods smelting of sulfides or formation of mattes by gases fluidised material
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

"PROCESSO E APARELHAGEM PARA REDUZIR SóLIDOS CONTENDO óXIDO DE FERRO". A presente invenção refere-se a um processo para reduzir sólidos contendo óxido de ferro, tais como minério de ferro, em que sólidos de grãos finos são aquecidos e pelo menos parcialmente calcinados em um estágio de preaquecimento (2, 9). Em um primeiro reator de leito fluidizado (14), a jusante do estágio de preaquecimento (2, 9), os sólidos são pré-reduzidos, e reduzidos ainda mais em um segundo reator de leito fluidizado (16). A jusante do segundo reator (16), é provido um estágio de briquetagem (20), no qual os sólidos são briquetados a uma temperatura superior a 500<198>C. A fim de aumentar o rendimento energético e melhorar a escoabilidade dos sólidos no estágio de briquetagem (20), é adicionada magnesita ao estágio de preaquecimento (2, 9), juntamente com os sólidos contendo óxido de ferro, cuja magnesita é pelo menos parcialmente calcinada no estágio de preaquecimento (2, 9) para obter óxido de magnésio. Além disto, a invenção refere-se a uma aparelhagem correspondente."PROCESS AND APPARATUS FOR REDUCING SOLIDS CONTAINING IRON OXIDE". The present invention relates to a process for reducing iron oxide-containing solids, such as iron ore, wherein fine-grained solids are heated and at least partially calcined at a preheat stage (2,9). In a first fluidized bed reactor (14), downstream of the preheat stage (2,9), the solids are pre-reduced, and further reduced in a second fluidized bed reactor (16). Downstream of the second reactor (16), a briquetting stage (20) is provided, in which the solids are briquetted at a temperature above 500 <198> C. In order to increase the energy yield and improve the flowability of solids in the briquetting stage (20), magnesite is added to the preheat stage (2, 9), together with iron oxide-containing solids, whose magnesite is at least partially calcined. in the preheat stage (2, 9) to obtain magnesium oxide. In addition, the invention relates to a corresponding apparatus.

BRPI0413371-4A 2003-08-09 2004-07-16 process and apparatus for reducing solids containing iron oxide BRPI0413371A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10336676A DE10336676C5 (en) 2003-08-09 2003-08-09 Process and plant for the reduction of iron oxide-containing solids
PCT/EP2004/007904 WO2005014866A2 (en) 2003-08-09 2004-07-16 Process and plant for reducing solids containing iron oxide

Publications (1)

Publication Number Publication Date
BRPI0413371A true BRPI0413371A (en) 2006-10-17

Family

ID=34129525

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0413371-4A BRPI0413371A (en) 2003-08-09 2004-07-16 process and apparatus for reducing solids containing iron oxide

Country Status (9)

Country Link
US (1) US20070079666A1 (en)
CN (1) CN100366757C (en)
AU (1) AU2004262646A1 (en)
BR (1) BRPI0413371A (en)
CA (1) CA2534863A1 (en)
DE (1) DE10336676C5 (en)
EA (1) EA011430B1 (en)
WO (1) WO2005014866A2 (en)
ZA (1) ZA200600898B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038052B4 (en) 2009-08-19 2012-09-27 Wolfgang Krumm Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes
DE102015107433A1 (en) * 2015-05-12 2016-11-17 Outotec (Finland) Oy Process and plant for the production of calcined petroleum coke
DE102016103349A1 (en) * 2016-02-25 2017-08-31 Outotec (Finland) Oy Method and device for thermal treatment of a contaminated solid
CN109136539B (en) * 2018-07-05 2020-06-23 沈阳化工大学 Integrated process of fluidized bed two-stage gasification and flash light burning magnesite
CN115341061B (en) * 2021-05-13 2024-01-02 中国科学院过程工程研究所 Method for efficiently fluidizing and reducing vanadium titano-magnetite fine powder
DE102021205828A1 (en) * 2021-06-09 2022-12-15 Refratechnik Holding Gmbh Process and apparatus for producing a calcined material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792298A (en) * 1954-04-09 1957-05-14 Freeman Horace Iron oxide reduction
US3393066A (en) * 1964-09-21 1968-07-16 Exxon Research Engineering Co Process for reduction of iron ore in staged fluid beds without bogging
DE1458756A1 (en) * 1964-09-21 1969-02-06 Esso Res & Engineering Company Process for the production of sponge iron from oxidic iron ores
AT404735B (en) * 1992-10-22 1999-02-25 Voest Alpine Ind Anlagen METHOD AND INSTALLATION FOR THE PRODUCTION OF LIQUID PIPE IRON OR LIQUID STEEL PRE-PRODUCTS
DE4410093C1 (en) * 1994-03-24 1995-03-09 Metallgesellschaft Ag Process for the direct reduction of materials containing iron oxides
EP0630975B1 (en) * 1993-06-19 1997-07-23 Metallgesellschaft Ag Process for the direct reducing of material containing iron oxide
CA2281595A1 (en) * 1997-12-20 1999-07-01 Min Young Cho Apparatus for manufacturing molten pig iron and reduced iron by utilizing fluidized bed, and method therefor

Also Published As

Publication number Publication date
CN100366757C (en) 2008-02-06
WO2005014866A2 (en) 2005-02-17
DE10336676C5 (en) 2011-03-31
ZA200600898B (en) 2007-05-30
EA200600389A1 (en) 2006-08-25
US20070079666A1 (en) 2007-04-12
DE10336676B4 (en) 2005-09-29
DE10336676A1 (en) 2005-03-17
CA2534863A1 (en) 2005-02-17
WO2005014866A3 (en) 2005-03-31
EA011430B1 (en) 2009-02-27
AU2004262646A1 (en) 2005-02-17
CN1826416A (en) 2006-08-30

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.