DE2252795C3 - Entschwefelungsmittel für Roheisen- und Ferrolegierungsschmelzen - Google Patents
Entschwefelungsmittel für Roheisen- und FerrolegierungsschmelzenInfo
- Publication number
- DE2252795C3 DE2252795C3 DE2252795A DE2252795A DE2252795C3 DE 2252795 C3 DE2252795 C3 DE 2252795C3 DE 2252795 A DE2252795 A DE 2252795A DE 2252795 A DE2252795 A DE 2252795A DE 2252795 C3 DE2252795 C3 DE 2252795C3
- Authority
- DE
- Germany
- Prior art keywords
- pig iron
- melt
- calcium carbide
- clay
- calcium
- 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
- 239000003795 chemical substances by application Substances 0.000 title claims description 26
- 229910000805 Pig iron Inorganic materials 0.000 title claims description 16
- 239000000155 melt Substances 0.000 title claims description 14
- 229910001021 Ferroalloy Inorganic materials 0.000 title claims description 6
- 239000005997 Calcium carbide Substances 0.000 claims description 20
- 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 claims description 20
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
- 239000000920 calcium hydroxide Substances 0.000 claims description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 10
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 9
- 230000003009 desulfurizing effect Effects 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims 2
- 235000012211 aluminium silicate Nutrition 0.000 claims 2
- 239000004927 clay Substances 0.000 claims 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims 2
- 239000010451 perlite Substances 0.000 claims 2
- 235000019362 perlite Nutrition 0.000 claims 2
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000002734 clay mineral Substances 0.000 claims 1
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 235000010755 mineral Nutrition 0.000 claims 1
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 239000000571 coke Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000002006 petroleum coke Substances 0.000 description 3
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2252795A DE2252795C3 (de) | 1972-10-27 | 1972-10-27 | Entschwefelungsmittel für Roheisen- und Ferrolegierungsschmelzen |
| DE19732342405 DE2342405A1 (de) | 1972-10-27 | 1973-08-22 | Mittel zum entschwefeln von metallschmelzen |
| AT807073A AT343706B (de) | 1972-10-27 | 1973-09-19 | Mittel zum entschwefeln von metallschmelzen |
| ZA737918*A ZA737918B (en) | 1972-10-27 | 1973-10-11 | Agent suitable for desulphurising metal melts |
| IT70003/73A IT996812B (it) | 1972-10-27 | 1973-10-11 | Prodotto per la desolforazione di bagni metallici fusi |
| NLAANVRAGE7314070,A NL181669C (nl) | 1972-10-27 | 1973-10-12 | Werkwijze voor de bereiding van een poedervormig ontzwavelingsmiddel voor het ontzwavelen van gesmolten metaal. |
| AR250620A AR200033A1 (es) | 1972-10-27 | 1973-10-22 | Agente para desulfurar metales en fusion |
| BE136913A BE806339A (fr) | 1972-10-27 | 1973-10-22 | Produit pour la desulfuration de metaux fondus |
| LU68655A LU68655A1 (enExample) | 1972-10-27 | 1973-10-22 | |
| US05/408,954 US4078915A (en) | 1972-10-27 | 1973-10-23 | Method and composition for the desulfurization of molten metals |
| ES419920A ES419920A1 (es) | 1972-10-27 | 1973-10-24 | Un procedimiento para desulfurar hierros en fusion. |
| JP48120630A JPS5224497B2 (enExample) | 1972-10-27 | 1973-10-26 | |
| GB4993973A GB1448261A (en) | 1972-10-27 | 1973-10-26 | Agent for desulphurising crude iron metls |
| FR7338237A FR2204699B1 (enExample) | 1972-10-27 | 1973-10-26 | |
| CA184,320A CA993659A (en) | 1972-10-27 | 1973-10-26 | Agent for desulphurising metal melts |
| US05/797,973 US4159906A (en) | 1972-10-27 | 1977-05-18 | Method and composition for the desulfurization of molten metals |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2252795A DE2252795C3 (de) | 1972-10-27 | 1972-10-27 | Entschwefelungsmittel für Roheisen- und Ferrolegierungsschmelzen |
| DE2252796A DE2252796C3 (de) | 1972-10-27 | 1972-10-27 | Entschwefelungsmittel für Roheisen und Ferrolegierungsschmelzen |
| DE19732342405 DE2342405A1 (de) | 1972-10-27 | 1973-08-22 | Mittel zum entschwefeln von metallschmelzen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2252795A1 DE2252795A1 (de) | 1974-05-22 |
| DE2252795B2 DE2252795B2 (de) | 1977-02-03 |
| DE2252795C3 true DE2252795C3 (de) | 1982-09-09 |
Family
ID=27184800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2252795A Expired DE2252795C3 (de) | 1972-10-27 | 1972-10-27 | Entschwefelungsmittel für Roheisen- und Ferrolegierungsschmelzen |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4078915A (enExample) |
| JP (1) | JPS5224497B2 (enExample) |
| AR (1) | AR200033A1 (enExample) |
| AT (1) | AT343706B (enExample) |
| BE (1) | BE806339A (enExample) |
| CA (1) | CA993659A (enExample) |
| DE (1) | DE2252795C3 (enExample) |
| ES (1) | ES419920A1 (enExample) |
| FR (1) | FR2204699B1 (enExample) |
| GB (1) | GB1448261A (enExample) |
| IT (1) | IT996812B (enExample) |
| LU (1) | LU68655A1 (enExample) |
| NL (1) | NL181669C (enExample) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759285B2 (enExample) * | 1974-09-18 | 1982-12-14 | Nippon Carbide Kogyo Kk | |
| JPS5154016A (ja) * | 1974-11-07 | 1976-05-12 | Denki Kagaku Kogyo Kk | Yosennodatsuryuzai |
| JPS536217A (en) * | 1976-07-08 | 1978-01-20 | Denki Kagaku Kogyo Kk | Desulfurizing agent for molten metal |
| JPS5344416A (en) * | 1976-10-06 | 1978-04-21 | Kawasaki Steel Co | Desulphurizing compound for molten iron |
| DE2709062A1 (de) * | 1977-03-02 | 1978-09-07 | Sueddeutsche Kalkstickstoff | Mittel und verfahren zur entschwefelung von eisenschmelzen |
| JPS5450416A (en) * | 1977-09-30 | 1979-04-20 | Denki Kagaku Kogyo Kk | Hot iron desulfurizing agent |
| JPS5450417A (en) * | 1977-09-30 | 1979-04-20 | Denki Kagaku Kogyo Kk | Hot iron desulfurizing agent |
| US4175950A (en) * | 1978-07-17 | 1979-11-27 | Allied Chemical Corporation | Preparation of phosphorus containing metallic glass forming alloy melts |
| JPS55110712A (en) * | 1979-02-15 | 1980-08-26 | Kawasaki Steel Corp | Desulfurizing agent for blowing-in |
| US4242126A (en) * | 1979-07-11 | 1980-12-30 | Skw Trostberg Aktiengesellschaft | Process for the treatment of iron melts and for increasing the scrap portion in the converter |
| DE2934193A1 (de) * | 1979-08-23 | 1981-03-26 | Denki Kagaku Kogyo K.K., Tokio/Tokyo | Mittel zur entschwefelung von geschmolzenem eisen. |
| US4315773A (en) * | 1979-11-27 | 1982-02-16 | Skw Trostberg Aktiengesellschaft | Desulfurization mixture and process for desulfurizing pig iron |
| DE2952686A1 (de) * | 1979-12-29 | 1981-07-02 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung von entschwefelungsmitteln fuer roheisen- oder stahlschmelzen |
| ES497686A0 (es) * | 1979-12-29 | 1981-11-01 | Hoechst Ag | Procedimiento para la preparacion de un agente para la de- sulfuracion de masas fundidas metalicas |
| DE3008950C2 (de) * | 1980-03-08 | 1983-06-01 | Hoechst Ag, 6230 Frankfurt | Entschwefelungsmittel und Verfahren zu seiner Herstellung |
| DE3111510A1 (de) * | 1981-03-24 | 1982-10-07 | Hoechst Ag, 6000 Frankfurt | Entschwefelungsgemisch und verfahren zu seiner herstellung |
| DE3111509A1 (de) * | 1981-03-24 | 1982-10-07 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung von entschwefelungsmitteln fuer roheisen- oder stahlschmelzen |
| US4497661A (en) * | 1981-08-11 | 1985-02-05 | Ohio & Pennsylvania Fuels Co, Ltd. | Formed briquettes, process for forming the same and process for utilizing the same in the manufacture of metals |
| BR8606249A (pt) * | 1985-12-17 | 1987-09-29 | Sueddeutsche Kalkstickstoff | Composicao finamente granulada para a dessulfuracao de ferro fundido e processo para sua preparacao |
| DE3739156A1 (de) * | 1987-11-19 | 1989-06-01 | Sueddeutsche Kalkstickstoff | Stickstoffhaltiges zusatzmittel fuer stahlschmelzen |
| ATE142705T1 (de) * | 1991-04-02 | 1996-09-15 | Pechiney Electrometallurgie | Entschwefelungsmittel für roheisen, aus calciumkarbid und organisches bindemittel |
| US5358550A (en) * | 1992-10-26 | 1994-10-25 | Rossborough Manufacturing Company | Desulfurization agent |
| DE4236727C2 (de) * | 1992-10-30 | 1997-02-06 | Sueddeutsche Kalkstickstoff | Mittel zur Behandlung von Metallschmelzen und dessen Verwendung |
| DE4242328C2 (de) * | 1992-12-15 | 1995-06-08 | Alfred Dipl Ing Dr Freissmuth | Mittel zur Entschwefelung, Entphosphorung, Entsilicierung und Entstickung von Roheisen- und Gußeisenschmelzen |
| US6352570B1 (en) | 2000-04-10 | 2002-03-05 | Rossborough Manufacturing Co., Lp | Magnesium desulfurization agent |
| US6372014B1 (en) | 2000-04-10 | 2002-04-16 | Rossborough Manufacturing Co. L.P. | Magnesium injection agent for ferrous metal |
| US6770115B2 (en) * | 2002-10-18 | 2004-08-03 | Remacor, Inc. | Process for magnesium granules |
| US6989040B2 (en) * | 2002-10-30 | 2006-01-24 | Gerald Zebrowski | Reclaimed magnesium desulfurization agent |
| US7731778B2 (en) * | 2006-03-27 | 2010-06-08 | Magnesium Technologies Corporation | Scrap bale for steel making process |
| US20080196548A1 (en) * | 2007-02-16 | 2008-08-21 | Magnesium Technologies Corporation | Desulfurization puck |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1252714B (de) * | 1967-10-26 | VEB Fachanstalt fur Gießereiwesen Dresden | Verfahren zum Legieren von Metallschmelzen vorzugsweise von Grauguß mittels exothermer Legierungstabletten | |
| CA628221A (en) * | 1961-09-26 | Homma Masao | Method of reduction refining irons, steels and cast irons | |
| DE73782C (de) * | E. H. SANITER, 11 New-Market-Street in Wigan, Lancaster, England; Vertreter : C. FEHLERT und G. LOUBIER in Berlin N.W., Dorotheenstr. 32 | Verfahren zur Reinigung des Eisens und Stahls von Schwefel | ||
| US1335370A (en) * | 1917-10-09 | 1920-03-30 | Ellis Foster Co | Desulfurizing cast-iron |
| US1869496A (en) * | 1930-09-06 | 1932-08-02 | Osborg Hans | Art of treating metals |
| DE699673C (de) * | 1937-04-18 | 1940-12-04 | August Thyssen Huette Akt Ges | Verfahren zum Entschwefeln und Reinigen von Eisenbaedern |
| US2117348A (en) * | 1937-07-30 | 1938-05-17 | Pittsburgh Plate Glass Co | Method of and composition for purifying metals |
| US2694621A (en) * | 1947-10-17 | 1954-11-16 | Steinschlaeger Michael | Process for the manufacture of carbon black |
| FR1010693A (fr) * | 1948-10-04 | 1952-06-13 | Commentry Fourchambault & Deca | Fontes grises à caractéristiques mécaniques très élevées et procédé pour leur fabrication |
| US2604393A (en) * | 1949-03-07 | 1952-07-22 | Smalley Oliver | Method of desulfurizing iron and steel with metal hydrides |
| GB762009A (en) * | 1952-02-14 | 1956-11-21 | Arthur Thill | Improvements in or relating to the denitridisation of steel |
| US2845689A (en) * | 1954-07-06 | 1958-08-05 | American Cyanamid Co | Warp size containing dicyandiamide and a polyacrylate salt |
| GB787098A (en) * | 1954-09-30 | 1957-12-04 | Rheinische Kalksteinwerke | An improved method for the introduction of fine substances into baths of molten steel |
| FR1131035A (fr) * | 1954-09-30 | 1957-02-14 | Rheinische Kalksteinwerke | Procédé pour introduire des corps finement divisés dans les bains d'acier |
| GB824394A (en) | 1956-02-23 | 1959-11-25 | Alfred Decker | Method for the desulphurization of pig iron and steel |
| US2979394A (en) * | 1957-11-14 | 1961-04-11 | Niederrheinische Hutte Ag | Method for preparing high grade rimmed steel with wide ferritic peripheral zone |
| FR1274499A (fr) * | 1960-08-18 | 1961-10-27 | Ct Technique Des Ind Fonderie | Procédé de désulfuration d'un bain métallique |
| GB1003171A (en) * | 1961-03-06 | 1965-09-02 | Yasukiyo Nishida | Refining of irons and steels |
| CH363670A (de) * | 1962-01-11 | 1962-08-15 | Technochemie Ets | Mittel zur Entschwefelung und/oder Entphosphorung von Eisen- und Stahlschmelzen und Verfahren zu dessen Herstellung |
| FR1363328A (fr) * | 1963-04-30 | 1964-06-12 | Fonderite | Produit de désoxydation utilisable en aciérie |
| US3506436A (en) * | 1966-11-25 | 1970-04-14 | Kaiser Ind Corp | Environmental control process for gaseously removing carbon from liquid metals |
| US3622533A (en) * | 1967-08-30 | 1971-11-23 | American Cyanamid Co | Polyacrylamide gels containing latent thermal degradation inhibitor |
| DE1583268B1 (de) * | 1967-12-29 | 1971-08-05 | Konink Nl Hoogovens En Staalfa | Mittel zur Entschwefelung von fluessigem Eisen auf der Basis von technischem Kalkstickstoff und Verfahren zur Entschwefelung von Eisen |
| FR2001991A1 (fr) * | 1968-02-15 | 1969-10-03 | Kobe Steel Ltd | Perfectionnements aux procedes pour eliminer de l'arsenic a partir de metaux ou alliages |
| DE1758250B1 (de) * | 1968-04-29 | 1971-10-28 | Sueddeutsche Kalkstickstoff | Mittel zum Entschwefeln von Eisenschmelzen |
| US3549589A (en) * | 1968-10-25 | 1970-12-22 | Gen Tire & Rubber Co | Color stabilized interpolymers of ethylene and vinyl acetate |
| US3551139A (en) * | 1968-12-20 | 1970-12-29 | Koninklijke Hoogovens En Staal | Desulphurizing composition for treating iron melts and method |
| JPS4827568B1 (enExample) * | 1969-08-13 | 1973-08-23 | ||
| DE2000120C3 (de) * | 1970-01-02 | 1974-06-27 | Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg | Verfahren zum Frischen von Roheisen zu Stahl |
| JPS5030571B1 (enExample) * | 1970-03-27 | 1975-10-02 | ||
| US3809547A (en) * | 1970-12-22 | 1974-05-07 | Flintkote Co | Electric furnace steelmaking process using oxide of boron additive |
-
1972
- 1972-10-27 DE DE2252795A patent/DE2252795C3/de not_active Expired
-
1973
- 1973-09-19 AT AT807073A patent/AT343706B/de not_active IP Right Cessation
- 1973-10-11 IT IT70003/73A patent/IT996812B/it active
- 1973-10-12 NL NLAANVRAGE7314070,A patent/NL181669C/xx not_active IP Right Cessation
- 1973-10-22 BE BE136913A patent/BE806339A/xx not_active IP Right Cessation
- 1973-10-22 AR AR250620A patent/AR200033A1/es active
- 1973-10-22 LU LU68655A patent/LU68655A1/xx unknown
- 1973-10-23 US US05/408,954 patent/US4078915A/en not_active Expired - Lifetime
- 1973-10-24 ES ES419920A patent/ES419920A1/es not_active Expired
- 1973-10-26 CA CA184,320A patent/CA993659A/en not_active Expired
- 1973-10-26 JP JP48120630A patent/JPS5224497B2/ja not_active Expired
- 1973-10-26 GB GB4993973A patent/GB1448261A/en not_active Expired
- 1973-10-26 FR FR7338237A patent/FR2204699B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2252795B2 (de) | 1977-02-03 |
| NL181669C (nl) | 1987-10-01 |
| DE2252795A1 (de) | 1974-05-22 |
| US4078915A (en) | 1978-03-14 |
| FR2204699A1 (enExample) | 1974-05-24 |
| CA993659A (en) | 1976-07-27 |
| JPS4994512A (enExample) | 1974-09-07 |
| ES419920A1 (es) | 1976-07-16 |
| FR2204699B1 (enExample) | 1977-08-05 |
| NL7314070A (enExample) | 1974-05-01 |
| IT996812B (it) | 1975-12-10 |
| GB1448261A (en) | 1976-09-02 |
| AR200033A1 (es) | 1974-10-15 |
| BE806339A (fr) | 1974-02-15 |
| LU68655A1 (enExample) | 1973-12-27 |
| ATA807073A (de) | 1977-10-15 |
| JPS5224497B2 (enExample) | 1977-07-01 |
| AT343706B (de) | 1978-06-12 |
| NL181669B (nl) | 1987-05-04 |
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