ES342836A1 - Process for melting and decarburising steel scrap - Google Patents
Process for melting and decarburising steel scrapInfo
- Publication number
- ES342836A1 ES342836A1 ES342836A ES342836A ES342836A1 ES 342836 A1 ES342836 A1 ES 342836A1 ES 342836 A ES342836 A ES 342836A ES 342836 A ES342836 A ES 342836A ES 342836 A1 ES342836 A1 ES 342836A1
- Authority
- ES
- Spain
- Prior art keywords
- melting
- steel scrap
- decarburising
- oxide
- melt
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 238000002844 melting Methods 0.000 title abstract 2
- 230000008018 melting Effects 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 229910052804 chromium Inorganic materials 0.000 abstract 3
- 229910052759 nickel Inorganic materials 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000005261 decarburization Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 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
- C21C5/56—Manufacture of steel by other methods
- C21C5/562—Manufacture of steel by other methods starting from scrap
-
- 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
- C21C5/5264—Manufacture of alloyed steels including ferro-alloys
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
- C21C7/0685—Decarburising 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
- C21C5/5241—Manufacture of steel in electric furnaces in an inductively heated furnace
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
-
- 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
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Steel scrap containing more than 17% Cr, or Cr and Ni, or Cr, Ni and Mo is melted and decarburized to produce an end product having 0À03% C or less by first melting it in an arc furnace where the melt is adjusted to the metallic composition desired and any Al, Ti and Si removed by addition of a stoichiometric amount of oxygen or metal oxide, and then transferring the melt to a vacuum induction furnace where decarburization is effected by the addition of oxygen or an oxide such as Fe, Mn or Ni oxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV0032211 | 1966-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES342836A1 true ES342836A1 (en) | 1968-08-16 |
Family
ID=7587082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES342836A Expired ES342836A1 (en) | 1966-10-27 | 1967-07-10 | Process for melting and decarburising steel scrap |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT272391B (en) |
| BE (1) | BE705654A (en) |
| DE (1) | DE1508296B2 (en) |
| ES (1) | ES342836A1 (en) |
| GB (1) | GB1149133A (en) |
| SE (1) | SE312818B (en) |
| SU (1) | SU405208A3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0085136B1 (en) * | 1982-02-01 | 1988-06-01 | Allied Iron Company | Processed ferrous metal and process of production |
| FR2553435A1 (en) * | 1983-10-12 | 1985-04-19 | Commissariat Energie Atomique | Process for the treatment of a steel containing metal elements, especially cobalt and/or nickel, with a view to removing these elements from the steel. |
| LU90232B1 (en) * | 1998-04-08 | 1999-10-11 | Wurth Paul Sa | Manufacturing process of stainless steels and steels with high levels of alloying elements |
-
1966
- 1966-10-27 DE DE19661508296 patent/DE1508296B2/en active Pending
-
1967
- 1967-06-30 SE SE1011167A patent/SE312818B/xx unknown
- 1967-07-10 ES ES342836A patent/ES342836A1/en not_active Expired
- 1967-09-01 AT AT803467A patent/AT272391B/en active
- 1967-09-06 GB GB4081067A patent/GB1149133A/en not_active Expired
- 1967-10-14 SU SU1190471A patent/SU405208A3/ru active
- 1967-10-25 BE BE705654D patent/BE705654A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE705654A (en) | 1968-03-01 |
| SE312818B (en) | 1969-07-28 |
| GB1149133A (en) | 1969-04-16 |
| SU405208A3 (en) | 1973-10-22 |
| AT272391B (en) | 1969-07-10 |
| DE1508296B2 (en) | 1970-09-10 |
| DE1508296A1 (en) | 1969-05-29 |
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