GB1243443A - A method for the production of liquid pig iron or steel directly from dressed ore - Google Patents

A method for the production of liquid pig iron or steel directly from dressed ore

Info

Publication number
GB1243443A
GB1243443A GB3666369A GB3666369A GB1243443A GB 1243443 A GB1243443 A GB 1243443A GB 3666369 A GB3666369 A GB 3666369A GB 3666369 A GB3666369 A GB 3666369A GB 1243443 A GB1243443 A GB 1243443A
Authority
GB
United Kingdom
Prior art keywords
iron
oxygen
slag layer
gas
pig iron
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.)
Expired
Application number
GB3666369A
Inventor
Olov Johnson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3666369A priority Critical patent/GB1243443A/en
Publication of GB1243443A publication Critical patent/GB1243443A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/08—Making pig-iron other than in blast furnaces in hearth-type furnaces
    • 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
    • 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
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
    • 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

Abstract

1,243,443. Producing iron. O. JOHNSSON. July 21, 1969, No. 36663/69. Heading C7D. In the production of liquid pig iron or steel by smelting reduction, wherein a bath J of pig iron or steel is covered by an iron oxide-containing slag layer S to which iron oxide material, iron sulphide material, scrap, and/or other iron carrier is supplied, a free oxygen-containing gas is supplied directly into the slag layer (pipe L) to such a depth that CO, and, if reduction means containing H 2 or hydrocarbons are added H 2 , moving up through the slag layer will convert to CO 2 and H 2 O respectively to an extent of more than 70%, and reduction means is supplied directly to the iron bath J, e.g. if the C content of J is insufficient for smelting reduction, by pipe R, the relative concentrations of the ions in the slag layer being such that the ratio (Ca<SP>2+</SP>+ Mg<SP>2+</SP> + Fe<SP>2+</SP> + Fe<SP>3+</SP>) to Si<SP>2+</SP> is greater than 1. The oxygen-containing gas is air, oxygen, air/oxygen, or argon/oxygen, the reducing agent is coke powder, mineral oil, natural gas, cracking gases, producer gas or water gas, and the slag layer is preferably at least 30 cm. deep.
GB3666369A 1969-07-21 1969-07-21 A method for the production of liquid pig iron or steel directly from dressed ore Expired GB1243443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3666369A GB1243443A (en) 1969-07-21 1969-07-21 A method for the production of liquid pig iron or steel directly from dressed ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3666369A GB1243443A (en) 1969-07-21 1969-07-21 A method for the production of liquid pig iron or steel directly from dressed ore

Publications (1)

Publication Number Publication Date
GB1243443A true GB1243443A (en) 1971-08-18

Family

ID=10390149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3666369A Expired GB1243443A (en) 1969-07-21 1969-07-21 A method for the production of liquid pig iron or steel directly from dressed ore

Country Status (1)

Country Link
GB (1) GB1243443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605535A1 (en) * 1991-09-20 1994-07-13 Ausmelt Pty Ltd Process for production of iron.
EP1087022A1 (en) * 1999-09-27 2001-03-28 Technological Resources Pty. Ltd. A direct smelting process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605535A1 (en) * 1991-09-20 1994-07-13 Ausmelt Pty Ltd Process for production of iron.
EP0605535A4 (en) * 1991-09-20 1995-06-14 Ausmelt Pty Ltd Process for production of iron.
US5498277A (en) * 1991-09-20 1996-03-12 Ausmelt Limited Process for production of iron
EP1087022A1 (en) * 1999-09-27 2001-03-28 Technological Resources Pty. Ltd. A direct smelting process

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