GB831858A - Open-hearth steelmaking process - Google Patents
Open-hearth steelmaking processInfo
- Publication number
- GB831858A GB831858A GB1166958A GB1166958A GB831858A GB 831858 A GB831858 A GB 831858A GB 1166958 A GB1166958 A GB 1166958A GB 1166958 A GB1166958 A GB 1166958A GB 831858 A GB831858 A GB 831858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- carbon
- lance
- oxygen
- centre
- 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
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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
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
831,858. Steel manufacture. UNITED STATES STEEL CORPORATION. April 11. 1958, No. 11669/58. Class 72 [Also in XII] A method of making steel in an open hearth furnace comprises, when the carbon content of the metal is in excess of 0.3%, adding between 200 and 1,000 cu. ft. of oxygen per ton of metal in a plurality of streams striking the bath sufficiently far apart to provide isolated reaction zones, each stream delivering more than 6,500 cu. ft. per hour at a velocity of between 400 and 1,100 feet per second. As shown, oxygen may be supplied at the centre of an open hearth furnace 2 through a lance 4 which has a number of orifices and which is spaced 6-18 inches above the bath surface. The angle the orifices make with one another and with the centre-line of the lance are so adjusted that the stream of gas from each orifice produces a separate reaction zone. The lance may be used from melting down to the end of the process when low carbon steel (carbon below 0.10%) is being produced, or, when the steel is intended to have more than 0.2% carbon, the oxygen addition is stopped when the carbon reaches 10-15 points above the tap value. It is stated that the process reduces the time required and the amount of fuel used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1166958A GB831858A (en) | 1958-04-11 | 1958-04-11 | Open-hearth steelmaking process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1166958A GB831858A (en) | 1958-04-11 | 1958-04-11 | Open-hearth steelmaking process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB831858A true GB831858A (en) | 1960-04-06 |
Family
ID=9990508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1166958A Expired GB831858A (en) | 1958-04-11 | 1958-04-11 | Open-hearth steelmaking process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB831858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2011258A1 (en) * | 1968-06-20 | 1970-02-27 | Combinatul Siderurgic | |
| WO2020118308A1 (en) * | 2018-12-07 | 2020-06-11 | Mono Ceramics Inc. | Improved manifold for desulfurization lance |
-
1958
- 1958-04-11 GB GB1166958A patent/GB831858A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2011258A1 (en) * | 1968-06-20 | 1970-02-27 | Combinatul Siderurgic | |
| WO2020118308A1 (en) * | 2018-12-07 | 2020-06-11 | Mono Ceramics Inc. | Improved manifold for desulfurization lance |
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