JPS6436710A - Blast furnace operating method - Google Patents

Blast furnace operating method

Info

Publication number
JPS6436710A
JPS6436710A JP19345787A JP19345787A JPS6436710A JP S6436710 A JPS6436710 A JP S6436710A JP 19345787 A JP19345787 A JP 19345787A JP 19345787 A JP19345787 A JP 19345787A JP S6436710 A JPS6436710 A JP S6436710A
Authority
JP
Japan
Prior art keywords
coke
reaction
blast furnace
iron ore
grain size
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
JP19345787A
Other languages
Japanese (ja)
Other versions
JPH0776366B2 (en
Inventor
Masaaki Naito
Kazuyoshi Yamaguchi
Toru Nishi
Yoichi Hayashi
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP62193457A priority Critical patent/JPH0776366B2/en
Publication of JPS6436710A publication Critical patent/JPS6436710A/en
Publication of JPH0776366B2 publication Critical patent/JPH0776366B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/007—Conditions of the cokes or characterised by the cokes used

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To promote reducing reaction of iron ore by lowering temp. of heat holding zone and to improve the productivity by using coke having the specific reactivity and grain size as the coke charged in a blast furnace. CONSTITUTION:The coke having >=30% JIS reactivity is adjusted to <=15mm grain size and this high reactive coke is mixed with the ordinary coke and iron ore to charge in the blast furnace. As this high reactive coke is small grain size and has high reactivity, the interface reaction, by which CO2 in the furnace becomes CO by bringing into contact with the coke surface, is smoothly executed. Further, as this result, CO gas generating in the furnace reduces the iron ore and the reaction reduced into low class oxide or metallic condition is promoted. As the gasified reaction of the coke is endothermic reaction, the temp. of the heat holding zone in the shaft of the blast furnace can be descended. As a result, the reducing reaction of the iron ore by CO gas can be further promoted than the ordinary method.
JP62193457A 1987-07-31 1987-07-31 Blast furnace operation method Expired - Lifetime JPH0776366B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62193457A JPH0776366B2 (en) 1987-07-31 1987-07-31 Blast furnace operation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62193457A JPH0776366B2 (en) 1987-07-31 1987-07-31 Blast furnace operation method

Publications (2)

Publication Number Publication Date
JPS6436710A true JPS6436710A (en) 1989-02-07
JPH0776366B2 JPH0776366B2 (en) 1995-08-16

Family

ID=16308320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62193457A Expired - Lifetime JPH0776366B2 (en) 1987-07-31 1987-07-31 Blast furnace operation method

Country Status (1)

Country Link
JP (1) JPH0776366B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007231326A (en) * 2006-02-28 2007-09-13 Jfe Steel Kk Blast furnace operation method
JP2008088476A (en) * 2006-09-29 2008-04-17 Kobe Steel Ltd Blast furnace operation method
JP2014031557A (en) * 2012-08-06 2014-02-20 Nippon Steel & Sumitomo Metal Blast furnace operation method
JP2015034335A (en) * 2013-07-12 2015-02-19 株式会社神戸製鋼所 Method for producing reduced iron
KR20160044597A (en) 2013-09-26 2016-04-25 제이에프이 스틸 가부시키가이샤 Method for charging raw materials into blast furnace
KR20160129032A (en) 2014-03-28 2016-11-08 제이에프이 스틸 가부시키가이샤 Method for charging raw material into blast furnace
KR20180112829A (en) 2016-03-16 2018-10-12 제이에프이 스틸 가부시키가이샤 How to charge raw materials for blast furnace

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6558518B1 (en) 2018-03-30 2019-08-14 Ｊｆｅスチール株式会社 Raw material charging method for blast furnace

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127413A (en) * 1985-11-28 1987-06-09 Nippon Kokan Kk <Nkk> Blast furnace raw material charging method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127413A (en) * 1985-11-28 1987-06-09 Nippon Kokan Kk <Nkk> Blast furnace raw material charging method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007231326A (en) * 2006-02-28 2007-09-13 Jfe Steel Kk Blast furnace operation method
JP2008088476A (en) * 2006-09-29 2008-04-17 Kobe Steel Ltd Blast furnace operation method
JP2014031557A (en) * 2012-08-06 2014-02-20 Nippon Steel & Sumitomo Metal Blast furnace operation method
JP2015034335A (en) * 2013-07-12 2015-02-19 株式会社神戸製鋼所 Method for producing reduced iron
KR20160044597A (en) 2013-09-26 2016-04-25 제이에프이 스틸 가부시키가이샤 Method for charging raw materials into blast furnace
KR20160129032A (en) 2014-03-28 2016-11-08 제이에프이 스틸 가부시키가이샤 Method for charging raw material into blast furnace
KR20180112829A (en) 2016-03-16 2018-10-12 제이에프이 스틸 가부시키가이샤 How to charge raw materials for blast furnace
CN109072318A (en) * 2016-03-16 2018-12-21 杰富意钢铁株式会社 To the method for blast furnace charging feedstock

Also Published As

Publication number Publication date
JPH0776366B2 (en) 1995-08-16

Similar Documents

Publication Publication Date Title
USRE32247E (en) Process for the direct production of steel
EP0237811A3 (en) Method of reducing iron oxides in two steps
MY122230A (en) A direct smelting process and apparatus
EP1114195A4 (en) A direct smelting process
MXPA05012242A (en) Method and apparatus for improved use of primary energy sources in integrated steel plants.
CA2010357A1 (en) Method for smelting reduction of ni ore
EP0236802A3 (en) Iron ore melt reduction process
US4248624A (en) Use of prereduced ore in a blast furnace
CN1167837A (en) Method for direct use of chromite ore in production of stainless steel
JPS6436710A (en) Blast furnace operating method
EP0357395A3 (en) A silicon smelting process and a furnace therefor
GB2126570A (en) Method of manufacturing calcium carbide from powdered lime/limestone
GB1475731A (en) Method of producing reduction gas
US4412862A (en) Method for the production of ferrochromium
JPS5641306A (en) Iron making method by direct reduction of iron oxide
JPS6436709A (en) Blast furnace operating method
US2559213A (en) Method for producing metals in blast furnaces
GB945312A (en) Method of producing pig iron or ferrous alloys in a blast furnace
Ponghis et al. Tests on the Reduction and Melting of Iron Ores by Reformed Gas Produced in a Plasma Medium
JPH0196314A (en) Smelting reduction method
GB936589A (en) Improvements in and relating to the manufacture of ferro-manganese and ferro-silico-manganese
Stickler Variants of the Elred Process
Romenets The Process of the Liquid Phase Reduction of Iron: Development and Achievement
JPS58115014A (en) Recovery of reaction or combustion exhaust gas and its device
Nakashima et al. Development of High-Efficiency Operation Technology at a Blast Furnace

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term