EP0207779A3 - Direct reduction process using shaft furnace - Google Patents

Direct reduction process using shaft furnace Download PDF

Info

Publication number
EP0207779A3
EP0207779A3 EP86305084A EP86305084A EP0207779A3 EP 0207779 A3 EP0207779 A3 EP 0207779A3 EP 86305084 A EP86305084 A EP 86305084A EP 86305084 A EP86305084 A EP 86305084A EP 0207779 A3 EP0207779 A3 EP 0207779A3
Authority
EP
European Patent Office
Prior art keywords
reduction process
shaft furnace
direct reduction
direct
furnace
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
EP86305084A
Other versions
EP0207779A2 (en
EP0207779B1 (en
Inventor
Takehiko Ashie
Osamu Tsuchiya
Ryo Watanabe
Nobuyuki Imanishi
Mamoru Onoda
Masahiro Maekawa
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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=15389706&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0207779(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of EP0207779A2 publication Critical patent/EP0207779A2/en
Publication of EP0207779A3 publication Critical patent/EP0207779A3/en
Application granted granted Critical
Publication of EP0207779B1 publication Critical patent/EP0207779B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating 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
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)
EP86305084A 1985-07-02 1986-07-01 Direct reduction process using shaft furnace Revoked EP0207779B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60145641A JPS627806A (en) 1985-07-02 1985-07-02 Direct steel making method using vertical furnace
JP145641/85 1985-07-02

Publications (3)

Publication Number Publication Date
EP0207779A2 EP0207779A2 (en) 1987-01-07
EP0207779A3 true EP0207779A3 (en) 1988-12-07
EP0207779B1 EP0207779B1 (en) 1990-03-14

Family

ID=15389706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86305084A Revoked EP0207779B1 (en) 1985-07-02 1986-07-01 Direct reduction process using shaft furnace

Country Status (4)

Country Link
EP (1) EP0207779B1 (en)
JP (1) JPS627806A (en)
DE (1) DE3669533D1 (en)
MY (1) MY102683A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181954A (en) * 1991-01-14 1993-01-26 Hylsa S.A. De C.V. Method for coating iron-bearing particles to be processed in a direct reduction process
US5372628A (en) * 1993-09-10 1994-12-13 Akzo N.V. Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
US5476532A (en) * 1993-09-10 1995-12-19 Akzo Nobel N.V. Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
CN1038259C (en) * 1994-07-20 1998-05-06 赵栓柱 Method for preventing sponge iron from binding in production
KR100405516B1 (en) * 1996-12-09 2004-04-14 주식회사 포스코 Method for clearing stagnation layer of charging materials in shaft type reduction furnace
US6355088B1 (en) 1997-08-04 2002-03-12 Bechtel Corporation Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags
BR9811068A (en) * 1997-08-04 2000-08-15 Bechtel Group Inc Method for obtaining an iron concentrate from an iron ore charge
AT407402B (en) * 1999-04-22 2001-03-26 Voest Alpine Ind Anlagen METHOD FOR PRODUCING APPLICABLE MATERIAL FOR A DIRECT REDUCTION PROCESS
BRPI0603592A (en) * 2006-08-22 2008-04-08 Vale Do Rio Doce Co liquid or pulp aerator device
CN113699299B (en) 2013-07-29 2023-06-02 日本制铁株式会社 Raw material for direct reduction, method for producing raw material for direct reduction, and method for producing reduced iron
CN111893235A (en) * 2013-11-05 2020-11-06 沙特基础工业公司 Method and composition for reducing the adherence of iron oxide pellets used in direct reduction processes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869850A (en) * 1954-03-17 1959-01-20 Union Carbide Corp Preparation of ore and method of heat treatment
DE1186089B (en) * 1963-01-11 1965-01-28 Metallgesellschaft Ag Process for preventing the abrasion of pellets for iron ore reduction
DE2061346A1 (en) * 1970-12-12 1972-06-22 Hüttenwerk Oberhausen AG, 4200 Oberhausen Coating iron ore pellets with ceramic powder - before the reduction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529863B2 (en) * 1973-07-17 1977-03-18

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869850A (en) * 1954-03-17 1959-01-20 Union Carbide Corp Preparation of ore and method of heat treatment
DE1186089B (en) * 1963-01-11 1965-01-28 Metallgesellschaft Ag Process for preventing the abrasion of pellets for iron ore reduction
DE2061346A1 (en) * 1970-12-12 1972-06-22 Hüttenwerk Oberhausen AG, 4200 Oberhausen Coating iron ore pellets with ceramic powder - before the reduction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JAPANESE PATENTS REPORT, Section M, vol. 75, no. 38, 17th October 1975, page 1, Derwent Publications Ltd, London, GB; & JP-A-50 028 050 (NIPPON KOKAN K.K.) 12-09-1975 *

Also Published As

Publication number Publication date
DE3669533D1 (en) 1990-04-19
MY102683A (en) 1992-11-30
JPS627806A (en) 1987-01-14
JPH0582447B2 (en) 1993-11-19
EP0207779A2 (en) 1987-01-07
EP0207779B1 (en) 1990-03-14

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