NO310728B1 - Fremgangsmåte og utstyr for skumming - Google Patents

Fremgangsmåte og utstyr for skumming Download PDF

Info

Publication number: NO310728B1
Authority: NO; Norway
Prior art keywords: dry ice; slag layer; melt; lance; equipment
Prior art date: 1999-09-24

Application number

NO19994636A

Other languages

English (en)

Norwegian (no)

Other versions

NO994636D0 (no

NO994636L (no

Inventor

Thorvald Engh

Stig Roaas

Sigurd Haukeli

Original Assignee

Norsk Hydro As

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.)

1999-09-24

Filing date

1999-09-24

Publication date

2001-08-20

1999-09-24 Application filed by Norsk Hydro As filed Critical Norsk Hydro As

1999-09-24 Priority to NO19994636A priority Critical patent/NO310728B1/no

1999-09-24 Publication of NO994636D0 publication Critical patent/NO994636D0/no

2000-09-20 Priority to EP00120498A priority patent/EP1087024B1/fr

2000-09-20 Priority to DE60011531T priority patent/DE60011531D1/de

2001-03-26 Publication of NO994636L publication Critical patent/NO994636L/no

2001-08-20 Publication of NO310728B1 publication Critical patent/NO310728B1/no

Links

238000000034 method Methods 0.000 title claims description 13
238000005187 foaming Methods 0.000 title description 6
239000002245 particle Substances 0.000 claims description 57
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 54
239000002893 slag Substances 0.000 claims description 52
235000011089 carbon dioxide Nutrition 0.000 claims description 44
239000012159 carrier gas Substances 0.000 claims description 18
239000007789 gas Substances 0.000 claims description 14
229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
239000000155 melt Substances 0.000 claims description 8
239000007787 solid Substances 0.000 claims description 7
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
229910052751 metal Inorganic materials 0.000 claims description 5
239000002184 metal Substances 0.000 claims description 5
239000001301 oxygen Substances 0.000 claims description 5
229910052760 oxygen Inorganic materials 0.000 claims description 5
230000035515 penetration Effects 0.000 claims description 5
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
239000001569 carbon dioxide Substances 0.000 claims description 4
239000006260 foam Substances 0.000 claims description 4
238000003756 stirring Methods 0.000 claims description 4
238000010310 metallurgical process Methods 0.000 claims description 3
239000000203 mixture Substances 0.000 claims description 3
230000008569 process Effects 0.000 claims description 3
239000003570 air Substances 0.000 claims description 2
229910052757 nitrogen Inorganic materials 0.000 claims description 2
238000000859 sublimation Methods 0.000 description 7
230000008022 sublimation Effects 0.000 description 7
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
229910052799 carbon Inorganic materials 0.000 description 4
239000003245 coal Substances 0.000 description 4
238000010891 electric arc Methods 0.000 description 3
238000002347 injection Methods 0.000 description 3
239000007924 injection Substances 0.000 description 3
238000003860 storage Methods 0.000 description 3
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
235000008733 Citrus aurantifolia Nutrition 0.000 description 2
238000003723 Smelting Methods 0.000 description 2
229910000831 Steel Inorganic materials 0.000 description 2
235000011941 Tilia x europaea Nutrition 0.000 description 2
229910052804 chromium Inorganic materials 0.000 description 2
239000011651 chromium Substances 0.000 description 2
238000010924 continuous production Methods 0.000 description 2
239000006185 dispersion Substances 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
239000004088 foaming agent Substances 0.000 description 2
229910052742 iron Inorganic materials 0.000 description 2
239000004571 lime Substances 0.000 description 2
239000000463 material Substances 0.000 description 2
238000010327 methods by industry Methods 0.000 description 2
239000008188 pellet Substances 0.000 description 2
230000001105 regulatory effect Effects 0.000 description 2
239000010959 steel Substances 0.000 description 2
238000012546 transfer Methods 0.000 description 2
238000009736 wetting Methods 0.000 description 2
229910001021 Ferroalloy Inorganic materials 0.000 description 1
229910000519 Ferrosilicon Inorganic materials 0.000 description 1
241001062472 Stokellia anisodon Species 0.000 description 1
WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
230000006978 adaptation Effects 0.000 description 1
239000000654 additive Substances 0.000 description 1
238000013019 agitation Methods 0.000 description 1
238000005275 alloying Methods 0.000 description 1
229910001570 bauxite Inorganic materials 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
238000007664 blowing Methods 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
229910000423 chromium oxide Inorganic materials 0.000 description 1
238000011109 contamination Methods 0.000 description 1
238000009826 distribution Methods 0.000 description 1
229910000514 dolomite Inorganic materials 0.000 description 1
239000010459 dolomite Substances 0.000 description 1
239000000428 dust Substances 0.000 description 1
238000005265 energy consumption Methods 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
238000007689 inspection Methods 0.000 description 1
239000007788 liquid Substances 0.000 description 1
238000012423 maintenance Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
238000002844 melting Methods 0.000 description 1
239000000843 powder Substances 0.000 description 1
238000012545 processing Methods 0.000 description 1
230000009467 reduction Effects 0.000 description 1
230000008439 repair process Effects 0.000 description 1
238000000926 separation method Methods 0.000 description 1
238000005092 sublimation method Methods 0.000 description 1
230000008646 thermal stress Effects 0.000 description 1
239000002699 waste material Substances 0.000 description 1

Classifications

- 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
- C21C5/52—Manufacture of steel in electric furnaces
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/54—Processes yielding slags of special composition
- 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

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Manufacturing & Machinery (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Curing Cements, Concrete, And Artificial Stone (AREA)
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

NO19994636A 1999-09-24 1999-09-24 Fremgangsmåte og utstyr for skumming NO310728B1 (no)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
NO19994636A NO310728B1 (no)	1999-09-24	1999-09-24	Fremgangsmåte og utstyr for skumming
EP00120498A EP1087024B1 (fr)	1999-09-24	2000-09-20	Procédé et installation pour moussage de scories
DE60011531T DE60011531D1 (de)	1999-09-24	2000-09-20	Verfahren und Vorrichtung zur Erzeugung von Schlackenschaum

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NO19994636A NO310728B1 (no)	1999-09-24	1999-09-24	Fremgangsmåte og utstyr for skumming

Publications (3)

Publication Number	Publication Date
NO994636D0 NO994636D0 (no)	1999-09-24
NO994636L NO994636L (no)	2001-03-26
NO310728B1 true NO310728B1 (no)	2001-08-20

Family

ID=19903801

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO19994636A NO310728B1 (no)	1999-09-24	1999-09-24	Fremgangsmåte og utstyr for skumming

Country Status (3)

Country	Link
EP (1)	EP1087024B1 (fr)
DE (1)	DE60011531D1 (fr)
NO (1)	NO310728B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102011008894A1 (de) *	2011-01-19	2012-07-19	Air Liquide Deutschland Gmbh	Verfahren und Düse zur Unterdrückung einer Entwicklung von eisenhaltigem Dampf

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4089678A (en) *	1975-08-01	1978-05-16	Hanawalt Joseph D	Method and product for protecting molten magnesium
EP0544967B1 (fr) *	1991-11-28	1995-06-14	Carbagas	Procédé pour supprimer la poussière et la fumée lors de la production d'acier électrique
DE19608530C2 (de) *	1996-02-09	1999-01-14	Eisenbau Essen Gmbh	Verwendung von reinem CO¶2¶-Gas oder einem im wesentlichen CO¶2¶ enthaltenden Gas als Trägergas bei der Behandlung von Stahl in einem Lichtbogenofen

1999
- 1999-09-24 NO NO19994636A patent/NO310728B1/no not_active Application Discontinuation
2000
- 2000-09-20 EP EP00120498A patent/EP1087024B1/fr not_active Expired - Lifetime
- 2000-09-20 DE DE60011531T patent/DE60011531D1/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP1087024A1 (fr)	2001-03-28
NO994636D0 (no)	1999-09-24
EP1087024B1 (fr)	2004-06-16
NO994636L (no)	2001-03-26
DE60011531D1 (de)	2004-07-22

Legal Events

Date	Code	Title	Description
2004-08-16	FC2A	Withdrawal, rejection or dismissal of laid open patent application

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