DE68913001D1 - Verfahren zur herstellung eines reduziertes chromerz enthaltenden pulvers. - Google Patents

Verfahren zur herstellung eines reduziertes chromerz enthaltenden pulvers.

Info

Publication number: DE68913001D1
Authority: DE; Germany
Prior art keywords: producing; powder containing; containing reduced; chrome ore; reduced chrome
Prior art date: 1988-03-14
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 - Fee Related

Application number

DE89903243T

Other languages

English (en)

Other versions

DE68913001T2 (de

Inventor

Tadashi Uemura

Tsutomu Minagawa

Sadahiro Saito

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.)

Shunan Denko KK

Resonac Holdings Corp

Original Assignee

Showa Denko KK

Shunan Denko KK

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.)

1988-03-14

Filing date

1989-03-09

Publication date

1994-03-24

1989-03-09 Application filed by Showa Denko KK, Shunan Denko KK filed Critical Showa Denko KK

1994-03-24 Publication of DE68913001D1 publication Critical patent/DE68913001D1/de

1994-08-18 Application granted granted Critical

1994-08-18 Publication of DE68913001T2 publication Critical patent/DE68913001T2/de

2009-03-10 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
- 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
- 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

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Manufacturing & Machinery (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Mechanical Engineering (AREA)
Manufacture And Refinement Of Metals (AREA)
Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Inorganic Compounds Of Heavy Metals (AREA)

DE68913001T 1988-03-14 1989-03-09 Verfahren zur herstellung eines reduziertes chromerz enthaltenden pulvers. Expired - Fee Related DE68913001T2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP63059880A JP2655864B2 (ja)	1988-03-14	1988-03-14	高還元クロム鉱石粉体の製造方法
PCT/JP1989/000256 WO1989008724A1 (en)	1988-03-14	1989-03-09	Reduced chromium-ore bearing powder and method for producing the same

Publications (2)

Publication Number	Publication Date
DE68913001D1 true DE68913001D1 (de)	1994-03-24
DE68913001T2 DE68913001T2 (de)	1994-08-18

Family

ID=13125902

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE68913001T Expired - Fee Related DE68913001T2 (de)	1988-03-14	1989-03-09	Verfahren zur herstellung eines reduziertes chromerz enthaltenden pulvers.

Country Status (11)

Country	Link
US (1)	US5035742A (de)
EP (1)	EP0365680B1 (de)
JP (1)	JP2655864B2 (de)
KR (1)	KR930001131B1 (de)
BR (1)	BR8906467A (de)
CA (1)	CA1336646C (de)
DE (1)	DE68913001T2 (de)
FI (1)	FI94877C (de)
NO (1)	NO176265C (de)
WO (1)	WO1989008724A1 (de)
ZA (1)	ZA891885B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE68925734T2 (de) *	1988-12-22	1996-10-02	Univ Western Australia	Verfahren zur herstellung von metallen, legierungen und keramischen materialien
IT1262918B (it) *	1992-01-21	1996-07-22		Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo
AUPN639995A0 (en) *	1995-11-03	1995-11-30	Technological Resources Pty Limited	A method and an apparatus for producing metals and metal alloys
AUPO276496A0 (en)	1996-10-07	1996-10-31	Technological Resources Pty Limited	A method and an apparatus for producing metals and metal alloys
US20090162273A1 (en) *	2007-12-21	2009-06-25	Howmedica Osteonics Corp.	Chromium oxide powder having a reduced level of hexavalent chromium and a method of making the powder

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2850378A (en) *	1956-12-17	1958-09-02	Walter M Weil	Production of chromium by low-pressure reduction of oxides
GB1040443A (en) *	1962-05-02	1966-08-24	Nat Res Dev	Treatment of chromite
DE1946639A1 (de) *	1968-09-20	1970-03-26	J C I Metal Holdings Proprieta	Verfahren zur Herstellung von Chrom- und/oder Manganvorlegierungen
JPS4936848B1 (de) *	1970-12-30	1974-10-03
US3872193A (en) *	1971-05-24	1975-03-18	Gte Sylvania Inc	Process for producing powdered superalloys
FR2168170A1 (en) *	1972-01-19	1973-08-31	Pechiney Ugine Kuhlmann	Reducing chrome ore - agglomerated with carbon
JPS5152917A (de) *	1974-11-05	1976-05-11	Japan Metals & Chem Co Ltd
JPS5418414A (en) *	1977-07-12	1979-02-10	Toyo Soda Mfg Co Ltd	Manufacture of metallic chromium
JPS60155640A (ja) *	1984-01-26	1985-08-15	Nippon Steel Corp	クロ−ム鉱石の還元法
DE3415105A1 (de) *	1984-04-21	1985-10-31	Metallgesellschaft Ag, 6000 Frankfurt	Verfahren zur aufbereitung von chromiterzen
DE3518555C1 (de) *	1985-05-23	1986-01-09	Fried. Krupp Gmbh, 4300 Essen	Verfahren zur Reduktion von eisenhaltigen Chromerzen
JPS62149826A (ja) *	1985-12-23	1987-07-03	Sumitomo Metal Ind Ltd	クロム鉱石の予備還元方法

1988
- 1988-03-14 JP JP63059880A patent/JP2655864B2/ja not_active Expired - Fee Related
1989
- 1989-03-09 US US07/444,162 patent/US5035742A/en not_active Expired - Fee Related
- 1989-03-09 KR KR1019890702107A patent/KR930001131B1/ko not_active IP Right Cessation
- 1989-03-09 WO PCT/JP1989/000256 patent/WO1989008724A1/en active IP Right Grant
- 1989-03-09 BR BR898906467A patent/BR8906467A/pt not_active Application Discontinuation
- 1989-03-09 DE DE68913001T patent/DE68913001T2/de not_active Expired - Fee Related
- 1989-03-09 EP EP89903243A patent/EP0365680B1/de not_active Expired - Lifetime
- 1989-03-13 ZA ZA891885A patent/ZA891885B/xx unknown
- 1989-03-14 CA CA000593666A patent/CA1336646C/en not_active Expired - Fee Related
- 1989-11-06 FI FI895256A patent/FI94877C/fi not_active IP Right Cessation
- 1989-11-10 NO NO894488A patent/NO176265C/no unknown

Also Published As

Publication number	Publication date
ZA891885B (en)	1989-11-29
NO176265B (no)	1994-11-28
DE68913001T2 (de)	1994-08-18
US5035742A (en)	1991-07-30
KR900700641A (ko)	1990-08-16
FI94877B (fi)	1995-07-31
CA1336646C (en)	1995-08-15
BR8906467A (pt)	1990-11-20
EP0365680A1 (de)	1990-05-02
NO894488D0 (no)	1989-11-10
NO176265C (no)	1995-03-08
JPH01234529A (ja)	1989-09-19
WO1989008724A1 (en)	1989-09-21
FI94877C (fi)	1995-11-10
KR930001131B1 (ko)	1993-02-18
JP2655864B2 (ja)	1997-09-24
NO894488L (no)	1990-01-10
FI895256A0 (fi)	1989-11-06
EP0365680B1 (de)	1994-02-09

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Legal Events

Date	Code	Title	Description
1995-03-16	8364	No opposition during term of opposition
2003-01-16	8339	Ceased/non-payment of the annual fee