SE7607845L - PROCEDURE FOR COOLING OF FERROMANGAN OR FERROCHROME - Google Patents
PROCEDURE FOR COOLING OF FERROMANGAN OR FERROCHROMEInfo
- Publication number
- SE7607845L SE7607845L SE7607845A SE7607845A SE7607845L SE 7607845 L SE7607845 L SE 7607845L SE 7607845 A SE7607845 A SE 7607845A SE 7607845 A SE7607845 A SE 7607845A SE 7607845 L SE7607845 L SE 7607845L
- Authority
- SE
- Sweden
- Prior art keywords
- blown
- nozzles
- melt
- oxygen
- gas
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. 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
-
- 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
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Continuous Casting (AREA)
Abstract
1499049 Decarbonizing ferro chrome and ferro manganese GFE GES FUR ELEKTROMETALLURGIE mbH 7 July 1976 [11 July 1975 10 Sept 1975] 28172/76 Heading C7D High carbon ferro manganese or ferro chromium are decarbonized by blowing a superheated melt of the alloy with oxygen using jacketted nozzles. The alloy is heated to more than 100‹C above its melting range and blown, without the addition of cooling materials, to 1650-1900‹C for FeMn and 1750-2000‹C for FeCr to form high melting point Mn or Cr oxides which are reduced by lime and additions of reducing agents i.e. Si or Al and/or their alloys. The lime and reducing agents are added simultaneously, the lime being blown into the melt through the jacketted nozzles with an inert gas (Ar or Ar/H) and the reductants being added in solid or liquid form from above. Examples of reductants are FeSi, FeAl, SiCr and SiMn. The rate and amount of oxygen blown in is adjusted so that the decarburization reaction takes place in an area just above the gas nozzles, so that intensive mixing of the melt, oxygen and possibly, the jacket gas will occur there. The amount of oxygen required is 10-3 0Nm<SP>3</SP> for each 1%C to be removed per tonne of alloy, and it should be blown into the melt in 1-12.5 minutes. The protective jacket gas may be natural gas, propane &c., and up to 20% of the charge may be added in the form of solid material, provided the addition of the solid charge does not interfere with the decarbonization reaction above the nozzles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2531034A DE2531034C2 (en) | 1975-07-11 | 1975-07-11 | Process for decarburizing high-carbon ferro-manganese or high-carbon ferrochrome |
| DE19752540290 DE2540290C3 (en) | 1975-09-10 | Process for decarburizing * '1 "x 11" 6111 ferrochrome or high carbon ferromanganese |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7607845L true SE7607845L (en) | 1977-01-13 |
Family
ID=25769141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7607845A SE7607845L (en) | 1975-07-11 | 1976-07-08 | PROCEDURE FOR COOLING OF FERROMANGAN OR FERROCHROME |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS529616A (en) |
| AU (1) | AU503271B2 (en) |
| BR (1) | BR7604467A (en) |
| CA (1) | CA1077277A (en) |
| CS (1) | CS208709B2 (en) |
| ES (1) | ES449716A1 (en) |
| FI (1) | FI761996A (en) |
| FR (1) | FR2317369A1 (en) |
| GB (1) | GB1499049A (en) |
| NO (1) | NO762364L (en) |
| PT (1) | PT65351B (en) |
| SE (1) | SE7607845L (en) |
| SU (1) | SU648121A3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414559A1 (en) * | 1978-01-17 | 1979-08-10 | Creusot Loire | FERRO-MANGANESE REFINING PROCESS |
| JPS541044U (en) * | 1978-04-28 | 1979-01-06 | ||
| FR2444083A1 (en) * | 1978-12-11 | 1980-07-11 | Sofrem | MANILESE ALLOY DEILICIATION PROCESS |
| FR2446866A1 (en) * | 1979-01-22 | 1980-08-14 | Sofrem | PROCESS FOR OBTAINING MEDIUM CARBON-CONTAINING MANGANESE ALLOYS |
| JPS59167079U (en) * | 1983-04-25 | 1984-11-08 | マツダ株式会社 | Truck back panel structure |
| US4662937A (en) * | 1984-05-28 | 1987-05-05 | Nippon Steel Corporation | Process for production of high-manganese iron alloy by smelting reduction |
| JPS61291947A (en) * | 1985-06-18 | 1986-12-22 | Kawasaki Steel Corp | Production of alloy iron |
| CN110819880B (en) * | 2019-11-27 | 2021-06-22 | 宝钢德盛不锈钢有限公司 | Pretreatment process and application of chromium-containing low-nickel molten iron for production of 200-series stainless steel |
| WO2021177021A1 (en) | 2020-03-06 | 2021-09-10 | Ｊｆｅスチール株式会社 | Method for producing low-carbon ferromanganese |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1040526A (en) * | 1950-08-17 | 1953-10-15 | Bochumer Ver Fu R Gussstahlfab | Process for manufacturing low-carbon chromium and / or manganese alloys, of the type of refined and over-refined alloys |
| BE792732A (en) * | 1972-01-13 | 1973-03-30 | Elektrometallurgie Gmbh | PROCESS FOR RAPIDLY DECARBURATION OF IRON ALLOYS BY MEANS OF OXYGEN |
-
1976
- 1976-07-06 SU SU762378453A patent/SU648121A3/en active
- 1976-07-07 JP JP51080017A patent/JPS529616A/en active Granted
- 1976-07-07 GB GB28172/76A patent/GB1499049A/en not_active Expired
- 1976-07-07 NO NO762364A patent/NO762364L/no unknown
- 1976-07-08 SE SE7607845A patent/SE7607845L/en not_active Application Discontinuation
- 1976-07-08 FI FI761996A patent/FI761996A/fi not_active Application Discontinuation
- 1976-07-08 BR BR7604467A patent/BR7604467A/en unknown
- 1976-07-09 ES ES449716A patent/ES449716A1/en not_active Expired
- 1976-07-09 FR FR7621161A patent/FR2317369A1/en active Granted
- 1976-07-09 CS CS764564A patent/CS208709B2/en unknown
- 1976-07-09 PT PT65351A patent/PT65351B/en unknown
- 1976-07-12 AU AU15817/76A patent/AU503271B2/en not_active Expired
- 1976-07-12 CA CA256,771A patent/CA1077277A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR7604467A (en) | 1977-07-26 |
| CS208709B2 (en) | 1981-09-15 |
| PT65351A (en) | 1976-08-01 |
| JPS5727166B2 (en) | 1982-06-09 |
| CA1077277A (en) | 1980-05-13 |
| JPS529616A (en) | 1977-01-25 |
| GB1499049A (en) | 1978-01-25 |
| FR2317369B1 (en) | 1980-09-05 |
| FI761996A (en) | 1977-01-12 |
| PT65351B (en) | 1978-01-06 |
| AU1581776A (en) | 1978-01-19 |
| FR2317369A1 (en) | 1977-02-04 |
| NO762364L (en) | 1977-01-12 |
| AU503271B2 (en) | 1979-08-30 |
| SU648121A3 (en) | 1979-02-15 |
| ES449716A1 (en) | 1977-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
Ref document number: 7607845-0 |