GB946964A - Dephosphorization of melts of ferrous metals - Google Patents
Dephosphorization of melts of ferrous metalsInfo
- Publication number
- GB946964A GB946964A GB1592861A GB1592861A GB946964A GB 946964 A GB946964 A GB 946964A GB 1592861 A GB1592861 A GB 1592861A GB 1592861 A GB1592861 A GB 1592861A GB 946964 A GB946964 A GB 946964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slag
- melt
- oxygen
- mixture
- iron
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- 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
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)
- Treatment Of Steel In Its Molten State (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A phosphorus bearing pig iron, cast iron or steel melt is dephosphorized without loss of carbon by a method comprising forming on the melt a molten basic slag layer containing at least one constituent known to dephosphorize iron such as lime and iron oxide together with fluxing agents, the temperature of the melt being not more than 200 DEG C. above its solidification temperature, continuously supplying oxygen and feeding a solid oxidizing, basic slag-forming mixture containing the reactive constituent to the melt, either to the surface or below the surface thereof, and simultaneously withdrawing slag from the layer. Preferably the slag-forming mixture, which may be granular, powdered or compacted into rods, is fed to the same area of the layer to which the oxygen is supplied and wherein the temperature is higher. For example, at least a portion of this mixture may be powdered and blown with the oxygen on to or below the slag surface. The oxygen is preferably supplied at a constant rate through a forked lance (see Division F4) and only the rate of feeding of the mixture varied. Slag from the later stages of treatment may be cooled, comminuted and recycled by admixing to the slag-forming mixture. The melt may be contained within a basic, neutral or an acid lined container such as a ladle which is tilted for the continuous removal of slag. An example of a slag-forming mixture is: 33% rolling scale, 27% burnt lime, 24% blast furnace flue dust, 13% soda ash and/or glass waste, and 3% fluorspar.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH0041281 | 1960-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB946964A true GB946964A (en) | 1964-01-15 |
Family
ID=7154512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1592861A Expired GB946964A (en) | 1960-12-22 | 1961-05-02 | Dephosphorization of melts of ferrous metals |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT256154B (en) |
BE (1) | BE600580A (en) |
DE (1) | DE1408849A1 (en) |
GB (1) | GB946964A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3376130A (en) * | 1964-03-03 | 1968-04-02 | Stora Kopparbergs Bergslags Ab | Process for dephosphorization of pig iron particularly pig iron rich in phosphorus |
US3523020A (en) * | 1967-05-15 | 1970-08-04 | Canada Steel Co | Continuous phosphorus removal in electric-arc steelmaking |
US3523030A (en) * | 1966-02-22 | 1970-08-04 | Geigy Ag J R | Pigment treatment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113559808A (en) * | 2021-08-02 | 2021-10-29 | 金铁城智能科技(青岛)有限公司 | Molten iron treatment device |
-
1960
- 1960-12-22 DE DE19601408849 patent/DE1408849A1/en active Pending
-
1961
- 1961-02-13 AT AT120661A patent/AT256154B/en active
- 1961-02-24 BE BE600580A patent/BE600580A/en unknown
- 1961-05-02 GB GB1592861A patent/GB946964A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3376130A (en) * | 1964-03-03 | 1968-04-02 | Stora Kopparbergs Bergslags Ab | Process for dephosphorization of pig iron particularly pig iron rich in phosphorus |
US3523030A (en) * | 1966-02-22 | 1970-08-04 | Geigy Ag J R | Pigment treatment |
US3523020A (en) * | 1967-05-15 | 1970-08-04 | Canada Steel Co | Continuous phosphorus removal in electric-arc steelmaking |
Also Published As
Publication number | Publication date |
---|---|
AT256154B (en) | 1967-08-10 |
DE1408849A1 (en) | 1970-07-30 |
BE600580A (en) | 1961-06-16 |
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