CA1094325A - Metal refining method - Google Patents
Metal refining methodInfo
- Publication number
- CA1094325A CA1094325A CA279,001A CA279001A CA1094325A CA 1094325 A CA1094325 A CA 1094325A CA 279001 A CA279001 A CA 279001A CA 1094325 A CA1094325 A CA 1094325A
- Authority
- CA
- Canada
- Prior art keywords
- melt
- iron
- solid
- bearing material
- vessel
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000002184 metal Substances 0.000 title claims description 20
- 229910052751 metal Inorganic materials 0.000 title claims description 20
- 238000007670 refining Methods 0.000 title claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000007787 solid Substances 0.000 claims abstract description 56
- 229910052742 iron Inorganic materials 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 54
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 38
- 239000000155 melt Substances 0.000 claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000012159 carrier gas Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 abstract description 41
- 239000001301 oxygen Substances 0.000 abstract description 41
- 238000010079 rubber tapping Methods 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 41
- 238000009628 steelmaking Methods 0.000 description 18
- 238000010891 electric arc Methods 0.000 description 9
- 239000002893 slag Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 241000518994 Conta Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000331231 Amorphocerini gen. n. 1 DAD-2008 Species 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000905957 Channa melasoma Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 101100270435 Mus musculus Arhgef12 gene Proteins 0.000 description 1
- 241001508687 Mustela erminea Species 0.000 description 1
- 241001163743 Perlodes Species 0.000 description 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000332 continued effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
- C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
-
- 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
- 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
- C21B13/0026—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide in the flame of a burner or a hot gas stream
-
- 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
- C21C5/34—Blowing through the bath
-
- 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
- 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
- C21C5/56—Manufacture of steel by other methods
- C21C5/567—Manufacture of steel by other methods operating in a continuous way
-
- 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
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22341/76 | 1976-05-28 | ||
| GB22341/76A GB1586762A (en) | 1976-05-28 | 1976-05-28 | Metal refining method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1094325A true CA1094325A (en) | 1981-01-27 |
Family
ID=10177836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA279,001A Expired CA1094325A (en) | 1976-05-28 | 1977-05-24 | Metal refining method |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4089677A (Direct) |
| JP (1) | JPS5310319A (Direct) |
| CA (1) | CA1094325A (Direct) |
| DE (1) | DE2723857A1 (Direct) |
| FR (1) | FR2352887A1 (Direct) |
| GB (1) | GB1586762A (Direct) |
| IT (1) | IT1083284B (Direct) |
Families Citing this family (51)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838983C3 (de) * | 1978-09-07 | 1986-03-27 | Klöckner CRA Technologie GmbH, 4100 Duisburg | Verfahren zur Erzeugung von Stahl im Konverter |
| DE2816543C2 (de) * | 1978-04-17 | 1988-04-14 | Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg | Verfahren zur Stahlerzeugung |
| US4210442A (en) * | 1979-02-07 | 1980-07-01 | Union Carbide Corporation | Argon in the basic oxygen process to control slopping |
| DE2910103C2 (de) * | 1979-03-15 | 1982-10-28 | Klöckner-Werke AG, 4100 Duisburg | Verfahren zur Stahlerzeugung |
| US4334921A (en) * | 1979-04-16 | 1982-06-15 | Nippon Steel Corporation | Converter steelmaking process |
| LU81207A1 (fr) * | 1979-04-30 | 1980-12-16 | Arbed | Procede d'affinage d'un bain de metal contenant des matieres refroidissantes solides |
| US4280838A (en) * | 1979-05-24 | 1981-07-28 | Sumitomo Metal Industries, Ltd. | Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace |
| JPS6040486B2 (ja) * | 1979-07-03 | 1985-09-11 | 住友金属工業株式会社 | 鋼の精錬法 |
| JPS6013402B2 (ja) * | 1979-05-24 | 1985-04-06 | 住友金属工業株式会社 | ガス循環システムを有する鋼の精錬装置 |
| JPS6023163B2 (ja) * | 1979-07-03 | 1985-06-06 | 住友金属工業株式会社 | 鋼の製錬法 |
| JPS5623215A (en) * | 1979-08-02 | 1981-03-05 | Nippon Kokan Kk <Nkk> | Converter steel making method |
| DE2931957A1 (de) * | 1979-08-07 | 1981-02-12 | Maximilianshuette Eisenwerk | Verfahren zur herstellung von stahl mit niedrigem wasserstoffgehalt in einem sauerstoffdurchblaskonverter |
| US4330326A (en) * | 1979-08-24 | 1982-05-18 | Eisenwerk-Gesellschaft Maximilianshutte Mbh. | Method and a means for introducing close-grained carbonaceous fuels into a molten iron bath |
| JPS6023182B2 (ja) * | 1979-12-01 | 1985-06-06 | 新日本製鐵株式会社 | 中炭素高クロム溶湯の溶製方法 |
| DE2949794C2 (de) * | 1979-12-11 | 1984-01-19 | Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg | Verfahren, einer Eisenschmelze im Konverter Kohlenstoff zuzuführen |
| DE3008145C2 (de) * | 1980-03-04 | 1989-09-21 | Klöckner CRA Technologie GmbH, 4100 Duisburg | Stahlerzeugungsverfahren |
| ATE5202T1 (de) * | 1979-12-11 | 1983-11-15 | Eisenwerk-Gesellschaft Maximilianshuette Mbh | Stahlerzeugungsverfahren. |
| DE2949803C2 (de) * | 1979-12-11 | 1986-10-09 | Klöckner CRA Technologie GmbH, 4100 Duisburg | Verfahren zur Verbesserung der Wärmeausnutzung bei der Stahlerzeugung aus festen Eisenmaterialien |
| DD154026A5 (de) * | 1979-12-28 | 1982-02-17 | Creusot Loire | Mischblasverfahren zur raffination der metalle im konverter |
| JPS6049687B2 (ja) * | 1980-02-27 | 1985-11-05 | 川崎製鉄株式会社 | 羽口冷却方法 |
| US4302244A (en) * | 1980-07-18 | 1981-11-24 | Pennsylvania Engineering Corporation | Steel conversion method |
| DE3031680A1 (de) * | 1980-08-22 | 1982-03-11 | Klöckner-Werke AG, 4100 Duisburg | Verfahren zur gaserzeugung |
| US4358314A (en) * | 1980-09-03 | 1982-11-09 | British Steel Corporation | Metal refining process |
| JPS5757816A (en) * | 1980-09-19 | 1982-04-07 | Kawasaki Steel Corp | Steel making method by composite top and bottom blown converter |
| US4304598A (en) * | 1980-09-19 | 1981-12-08 | Klockner-Werke Ag | Method for producing steel from solid, iron containing pieces |
| JPS5794093A (en) * | 1980-12-02 | 1982-06-11 | Sumitomo Metal Ind Ltd | Method for operating coal gasification furnace |
| US4329171A (en) * | 1981-01-08 | 1982-05-11 | Pennsylvania Engineering Corporation | Steel making method |
| LU83313A1 (de) * | 1981-04-22 | 1983-03-24 | Arbed | Verfahren und einrichtung zum direkten herstellen von fluessigem eisen |
| AU8474782A (en) * | 1981-06-19 | 1982-12-23 | British Steel Corp. | Refining of steel from pig iron |
| US4365992A (en) * | 1981-08-20 | 1982-12-28 | Pennsylvania Engineering Corporation | Method of treating ferrous metal |
| US4457777A (en) * | 1981-09-07 | 1984-07-03 | British Steel Corporation | Steelmaking |
| ZA827820B (en) * | 1981-10-30 | 1983-08-31 | British Steel Corp | Production of steel |
| LU83814A1 (fr) * | 1981-12-04 | 1983-09-01 | Arbed | Procede et dispositif pour l'affinage d'un bain de metal contenant des matieres refroidissantes solides |
| NL8201269A (nl) * | 1982-03-26 | 1983-10-17 | Hoogovens Groep Bv | Werkwijze voor het vervaardigen van staal in een converter uitgaande van ruwijzer en schrot. |
| US4434005A (en) | 1982-09-24 | 1984-02-28 | Arbed S. A. (Luxembourg) | Method of and apparatus for refining a melt containing solid cooling material |
| FR2541313A1 (fr) * | 1982-12-02 | 1984-08-24 | Nippon Steel Corp | Procede pour la production d'acier inoxydable fondu |
| DE3304504A1 (de) * | 1983-02-10 | 1984-08-16 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zum kontinuierlichen einschmelzen von eisenschwamm |
| JPS59150006A (ja) * | 1983-02-16 | 1984-08-28 | Daido Steel Co Ltd | スクラツプ溶解方法および装置 |
| GB8509629D0 (en) * | 1985-04-15 | 1985-05-22 | British Steel Corp | Melting ferrous solids |
| GB8516143D0 (en) * | 1985-06-26 | 1985-07-31 | British Steel Corp | Melting of metals |
| SE458688B (sv) * | 1985-07-23 | 1989-04-24 | Ips Interproject Service Ab | Foerfarande och anlaeggning foer framstaellning av raajaern ur jaernbaerande oxidiskt material |
| JPS62167811A (ja) * | 1986-01-20 | 1987-07-24 | Nippon Kokan Kk <Nkk> | 溶融還元製鋼法 |
| CA1311787C (en) * | 1986-06-24 | 1992-12-22 | Masahisa Tate | Method of bottom blowing operation of a steel making electric furnace |
| JPH02200713A (ja) * | 1989-01-31 | 1990-08-09 | Sumitomo Metal Ind Ltd | 溶銑の製造装置および製造方法 |
| US5286277A (en) * | 1992-05-26 | 1994-02-15 | Zaptech Corporation | Method for producing steel |
| US5377960A (en) * | 1993-03-01 | 1995-01-03 | Berry Metal Company | Oxygen/carbon blowing lance assembly |
| DE4343957C2 (de) * | 1993-12-22 | 1997-03-20 | Tech Resources Pty Ltd | Konverterverfahren zur Produktion von Eisen |
| US5897684A (en) * | 1997-04-17 | 1999-04-27 | Ltv Steel Company, Inc. | Basic oxygen process with iron oxide pellet addition |
| RU2206623C2 (ru) * | 2001-03-19 | 2003-06-20 | ОАО "Западно-Сибирский металлургический комбинат" | Способ выплавки стали в конвертере |
| EP1983066A1 (fr) * | 2007-03-30 | 2008-10-22 | Paul Wurth S.A. | Procédé de récupération du molybdène, du nickel, du cobalt ou de leurs mélanges à partir de catalyseurs usés ou régénérés |
| JP5230693B2 (ja) * | 2010-07-06 | 2013-07-10 | 品川リフラクトリーズ株式会社 | ガス吹き込みノズル |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE460525C (de) * | 1928-05-30 | Eisen Und Stahlwerk Hoesch Akt | Vorrichtung zur Ausnutzung der Konverterabgase | |
| FR1263039A (fr) * | 1960-07-22 | 1961-06-05 | Beteiligungs & Patentverw Gmbh | Procédé d'affinage de la fonte liquide |
| GB1148602A (en) * | 1966-09-26 | 1969-04-16 | Steel Co Of Wales Ltd | Improvements in and relating to the treatment of metals |
| DE1583240A1 (de) * | 1967-09-30 | 1970-08-06 | Demag Ag | Verfahren und Vorrichtung zum Erzeugen von Stahl im Konverter |
| GB1183691A (en) * | 1968-02-02 | 1970-03-11 | Steel Castings Res And Trade A | Improvements in or relating to the Production of Spheroidal Graphite Irons. |
| US3567430A (en) * | 1968-06-11 | 1971-03-02 | Allegheny Ludlum Steel | Method of removing lead from molten austenitic stainless steel |
| BE788512A (fr) * | 1971-09-21 | 1973-01-02 | Creusot Loire | Procede de protection d'une tuyere de convertisseur d'affinage |
| US3876421A (en) * | 1972-11-09 | 1975-04-08 | Nippon Steel Corp | Process for desulfurization of molten pig iron |
| US3902889A (en) * | 1972-11-30 | 1975-09-02 | United States Steel Corp | Electric arc melting furnace |
| AT337736B (de) * | 1973-02-12 | 1977-07-11 | Voest Ag | Verfahren zum frischen von roheisen |
| DE2316768B2 (de) * | 1973-04-04 | 1977-03-03 | Fried. Krupp Gmbh, 4300 Essen | Verfahren zum frischen von metallen, insbesondere roheisen, und vorrichtung zur durchfuehrung des verfahrens |
| US3854932A (en) * | 1973-06-18 | 1974-12-17 | Allegheny Ludlum Ind Inc | Process for production of stainless steel |
| DE2401540B2 (de) * | 1974-01-14 | 1975-11-13 | Fried. Krupp Gmbh, 4300 Essen | Verfahren zum Einschmelzen von Eisenschwamm |
-
1976
- 1976-05-28 GB GB22341/76A patent/GB1586762A/en not_active Expired
-
1977
- 1977-05-20 US US05/799,102 patent/US4089677A/en not_active Expired - Lifetime
- 1977-05-24 CA CA279,001A patent/CA1094325A/en not_active Expired
- 1977-05-26 DE DE19772723857 patent/DE2723857A1/de not_active Withdrawn
- 1977-05-27 JP JP6204577A patent/JPS5310319A/ja active Pending
- 1977-05-27 IT IT68217/77A patent/IT1083284B/it active
- 1977-05-27 FR FR7716414A patent/FR2352887A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB1586762A (en) | 1981-03-25 |
| FR2352887B1 (Direct) | 1983-11-04 |
| JPS5310319A (en) | 1978-01-30 |
| US4089677A (en) | 1978-05-16 |
| FR2352887A1 (fr) | 1977-12-23 |
| DE2723857A1 (de) | 1977-12-08 |
| IT1083284B (it) | 1985-05-21 |
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