EP0436718A4 - Method of charging ore in melt-reduction. - Google Patents

Method of charging ore in melt-reduction.

Info

Publication number: EP0436718A4
Authority: EP; European Patent Office
Prior art keywords: melt; reduction; charging ore; ore; charging
Prior art date: 1987-09-10
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

EP19880907777

Other languages

German (de)

French (fr)

Other versions

EP0436718A1 (en

EP0436718B1 (en

Inventor

Haruyoshi Nkk Corporati Tanabe

Masahiro Nkk Corporat Kawakami

Kenji Nkk Corporatio Takahashi

Katsuhiro Nkk Corporat Iwasaki

Shigeru Nkk Corporation- Inoue

Hitoshi Nkk Corporation Kawata

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.)

JFE Engineering Corp

Original Assignee

NKK Corp

Nippon Kokan 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.)

1987-09-10

Filing date

1988-09-09

Publication date

1989-12-28

1988-01-29 Priority claimed from JP63020472A external-priority patent/JPH01165743A/en

1988-09-09 Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp

1989-12-28 Publication of EP0436718A4 publication Critical patent/EP0436718A4/en

1991-07-17 Publication of EP0436718A1 publication Critical patent/EP0436718A1/en

1994-07-06 Application granted granted Critical

1994-07-06 Publication of EP0436718B1 publication Critical patent/EP0436718B1/en

2008-09-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/005—Manufacture of stainless steel
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
- 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
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
- F27D99/0075—Gas curtain seals
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/16—Particulate material, e.g. comminuted scrap

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Manufacturing & Machinery (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Manufacture Of Iron (AREA)
Carbon Steel Or Casting Steel Manufacturing (AREA)

EP88907777A 1987-09-10 1988-09-09 Method of charging ore in melt-reduction Expired - Lifetime EP0436718B1 (en)

Applications Claiming Priority (5)

Application Number	Priority Date	Filing Date	Title
JP225253/87		1987-09-10
JP22525387		1987-09-10
JP20472/88		1988-01-29
JP63020472A JPH01165743A (en)	1987-09-10	1988-01-29	Method for charging of material in melting reduction of ore
PCT/JP1988/000911 WO1989002477A1 (en)	1987-09-10	1988-09-09	Method of charging ore in melt-reduction

Publications (3)

Publication Number	Publication Date
EP0436718A4 true EP0436718A4 (en)	1989-12-28
EP0436718A1 EP0436718A1 (en)	1991-07-17
EP0436718B1 EP0436718B1 (en)	1994-07-06

Family

ID=27283057

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88907777A Expired - Lifetime EP0436718B1 (en)	1987-09-10	1988-09-09	Method of charging ore in melt-reduction

Country Status (2)

Country	Link
EP (1)	EP0436718B1 (en)
AU (1)	AU620344B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT412786B (en) *	2003-07-04	2005-07-25	Voest Alpine Industrieanalgenb	METHOD FOR CHARGING FLUIDABLE MATERIAL AND DEVICE FOR CARRYING OUT THE METHOD

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2784037A (en) *	1954-08-18	1957-03-05	Rexroth Alfred	Apparatus for shooting material into cupolas
US3462263A (en) *	1965-08-11	1969-08-19	John H Walsh	Reduction of iron ore
EP0079182A1 (en) *	1981-10-30	1983-05-18	British Steel Corporation	Improvements in or relating to the production of steel
US4541866A (en) *	1984-01-26	1985-09-17	Westinghouse Electric Corp.	Hot injection ladle metallurgy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3169055A (en) *	1961-10-12	1965-02-09	Stora Kopparbergs Bergslags Ab	Process for producing pig iron in rotary furnace
JPS57143419A (en) *	1981-02-27	1982-09-04	Nippon Steel Corp	Steel making method of large quantity of generated heat
JPS61279609A (en) *	1985-06-05	1986-12-10	Sumitomo Metal Ind Ltd	Apparatus for producing high-chromium alloy by melt reduction
JPS6244533A (en) *	1985-08-19	1987-02-26	Kawasaki Steel Corp	Melting-reducing refining method for metallic oxide

1988
- 1988-09-09 AU AU23055/88A patent/AU620344B2/en not_active Ceased
- 1988-09-09 EP EP88907777A patent/EP0436718B1/en not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2784037A (en) *	1954-08-18	1957-03-05	Rexroth Alfred	Apparatus for shooting material into cupolas
US3462263A (en) *	1965-08-11	1969-08-19	John H Walsh	Reduction of iron ore
EP0079182A1 (en) *	1981-10-30	1983-05-18	British Steel Corporation	Improvements in or relating to the production of steel
US4541866A (en) *	1984-01-26	1985-09-17	Westinghouse Electric Corp.	Hot injection ladle metallurgy

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 139 (C-420)[2586], 7th May 1987; & JP-A-61 279 609 (SUMITOMO METAL IND. LTD) 10-12-1986 *
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 232 (C-437)[2679], 29th July 1987; & JP-A-62 044 533 (KAWASAKI STEEL CORP.) 26-02-1987 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 244 (C-138)[1122], 2nd December 1982; & JP-A-57 143 419 (SHIN NIPPON SEITETSU K.K.) 04-09-1982 *
See also references of WO8902477A1 *

Also Published As

Publication number	Publication date
EP0436718A1 (en)	1991-07-17
AU2305588A (en)	1989-04-17
EP0436718B1 (en)	1994-07-06
AU620344B2 (en)	1992-02-20

Legal Events

Date	Code	Title	Description
1991-05-31	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-07-17	17P	Request for examination filed	Effective date: 19890125
1991-07-17	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE DE FR GB IT NL SE
1992-05-06	17Q	First examination report despatched	Effective date: 19920320
1994-05-20	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-06-22	ITF	It: translation for a ep patent filed	Owner name: BARZANO' E ZANARDO MILANO S.P.A.
1994-07-06	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE DE FR GB IT NL SE
1994-07-06	REF	Corresponds to:	Ref document number: 108212 Country of ref document: AT Date of ref document: 19940715 Kind code of ref document: T
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1994-10-28	ET	Fr: translation filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 88907777.2
1995-05-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-05-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-06-28	26N	No opposition filed
1997-09-01	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19970901 Year of fee payment: 10
1997-09-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19970909 Year of fee payment: 10
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1997-09-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19970918 Year of fee payment: 10
1997-09-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19970929 Year of fee payment: 10
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1998-09-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980909 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980909
1998-09-10	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980910
1998-09-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980930
1999-03-31	BERE	Be: lapsed	Owner name: NKK CORP. Effective date: 19980930
1999-04-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990401
1999-04-28	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19980909
1999-05-31	EUG	Se: european patent has lapsed	Ref document number: 88907777.2
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1999-06-01	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 19990401
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2005-09-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050909

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