GB1100577A - Improvements in methods for refining pig iron - Google Patents
Improvements in methods for refining pig ironInfo
- Publication number
- GB1100577A GB1100577A GB33034/66A GB3303466A GB1100577A GB 1100577 A GB1100577 A GB 1100577A GB 33034/66 A GB33034/66 A GB 33034/66A GB 3303466 A GB3303466 A GB 3303466A GB 1100577 A GB1100577 A GB 1100577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- bath
- blowing
- converter
- commenced
- 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 abstract 2
- 229910000805 Pig iron Inorganic materials 0.000 title 1
- 238000007670 refining Methods 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 238000007664 blowing Methods 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 239000002893 slag Substances 0.000 abstract 2
- 229910000677 High-carbon steel Inorganic materials 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 239000010959 steel Substances 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
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/32—Blowing from above
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)
Abstract
In a two-stage top-blowing process for the production of low-phosphorus steel in a rotary converter the first stage of blowing is commenced with the converter stationary in a vertical position, rotation being commenced part way through that stage. The bath is then deslagged, this operation being carried out in the case of the production of high carbon steel when the carbon content of the bath is 0.2%-0.7% above that finally required, after which the converter is rotated throughout the second stage of blowing. To maintain the desired final carbon content the slag is then stiffened by a relatively slight movement of the vessel e.g. rotation at not more than 10 r.p.m. with the axis inclined to the vertical, without injection of oxygen, to bring about a slight reaction of the carbon of the bath with the slag oxides.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE40624 | 1965-09-02 | ||
| BE40698 | 1965-11-17 | ||
| LU50148 | 1965-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1100577A true GB1100577A (en) | 1968-01-24 |
Family
ID=27158413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33034/66A Expired GB1100577A (en) | 1965-09-02 | 1966-07-22 | Improvements in methods for refining pig iron |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3423202A (en) |
| BE (3) | BE669135A (en) |
| GB (1) | GB1100577A (en) |
| LU (1) | LU50148A1 (en) |
| NL (1) | NL6611214A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3540879A (en) * | 1967-06-27 | 1970-11-17 | Westinghouse Electric Corp | Method for controlling phosphorus removal in a basic oxygen furnace |
| US3849117A (en) * | 1968-10-07 | 1974-11-19 | Foseco Int | Treatment of slags covering molten metals |
| US3844769A (en) * | 1972-04-10 | 1974-10-29 | A Calderon | Method of controlling emissions from furnaces |
| DE3168626D1 (en) * | 1981-07-27 | 1985-03-14 | Thyssen Ag | Process for lowering the iron content of slags rich in cao formed in the course of the desulphurisation of pig iron |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172756A (en) * | 1965-03-09 | Process of dephosphorizing pig iron | ||
| CA583431A (en) * | 1959-09-15 | K. E. Johansson Folke | Method of refining phosphorus containing pig iron with oxygen into steel in a rotating furnace | |
| US2853377A (en) * | 1954-11-25 | 1958-09-23 | Stora Kopparbergs Bergslags Ab | Two step refining process in a tiltable rotary furnace |
| GB831251A (en) * | 1957-03-12 | 1960-03-23 | Phoenix Rheinrohr Ag | Improvements relating to processes for refining phosphorus-containing pig iron |
| US3136626A (en) * | 1960-08-19 | 1964-06-09 | Lorraine Laminage | Method of refining cast-iron |
-
1965
- 1965-09-02 BE BE669135A patent/BE669135A/xx unknown
- 1965-11-17 BE BE672473A patent/BE672473A/xx unknown
- 1965-12-28 LU LU50148D patent/LU50148A1/xx unknown
-
1966
- 1966-06-27 BE BE683241A patent/BE683241A/xx unknown
- 1966-07-22 GB GB33034/66A patent/GB1100577A/en not_active Expired
- 1966-08-04 US US570173A patent/US3423202A/en not_active Expired - Lifetime
- 1966-08-09 NL NL6611214A patent/NL6611214A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE672473A (en) | 1966-05-17 |
| BE683241A (en) | 1966-12-27 |
| BE669135A (en) | 1966-03-02 |
| LU50148A1 (en) | 1967-06-28 |
| NL6611214A (en) | 1967-03-03 |
| US3423202A (en) | 1969-01-21 |
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