GB1190487A - Continuous Phosphorus Removal in Electric-Arc Steelmaking. - Google Patents
Continuous Phosphorus Removal in Electric-Arc Steelmaking.Info
- Publication number
- GB1190487A GB1190487A GB22416/68A GB2241668A GB1190487A GB 1190487 A GB1190487 A GB 1190487A GB 22416/68 A GB22416/68 A GB 22416/68A GB 2241668 A GB2241668 A GB 2241668A GB 1190487 A GB1190487 A GB 1190487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slag
- bath
- rate
- phosphorus
- maintained
- 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
- C21C5/52—Manufacture of steel in electric furnaces
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S75/00—Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
- Y10S75/957—Continuous refining of molten iron
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
1,190,487. Electric steelmaking. METALLGESELLSCRAFT A.G., STEEL CO. OF CANADA Ltd. and PICKANDS MATHER & CO. May 10, 1968 [May 15, 1967], No.22416/68. Heading C7D. Phosphorus-containing iron-bearing material, particularly iron sponge, is continuously charged to an arc furnace to which slagging materials are also charged, the feeding rate of lime being increased during the charging so that the CaO/SiO 2 ratio of the slag rises whereby phosphorus is removed from the bath at a rate which is substantially constant and higher than the rate at which it is being added by the charge. The feedrates may be controlled or an oxygen lance employed so that the FeO concentration in the slag is between 6% and 24% and the bath temperature is between 2550 F. and 2850 F., the feedrate of the ferrous material preferably being so controlled that that temperature is maintained while power to the electrodes is maintained at or near the maximum. To produce a vigorous boil in the bath the sponge iron should contain a residual combined oxygen content of 0À1% to 1À75%. Slagforming materials are preferably added to the arc regions where turbulence is high; the slag may be tapped intermittently or continuously at a location remote therefrom.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA990466 | 1967-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1190487A true GB1190487A (en) | 1970-05-06 |
Family
ID=4142904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22416/68A Expired GB1190487A (en) | 1967-05-15 | 1968-05-10 | Continuous Phosphorus Removal in Electric-Arc Steelmaking. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3523020A (en) |
| JP (1) | JPS4930885B1 (en) |
| DE (1) | DE1608315B1 (en) |
| FR (1) | FR1575780A (en) |
| GB (1) | GB1190487A (en) |
| SE (1) | SE330183B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212685A (en) * | 1975-07-22 | 1977-01-31 | Sanyo Chem Ind Ltd | High boiling brake fluid |
| DE10215839A1 (en) * | 2002-04-10 | 2003-11-06 | Sms Demag Ag | Method and device for producing carbon steels or stainless steels by refining phosphorus-rich pig iron in an electric arc furnace or in a converter vessel |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB685326A (en) * | 1949-08-10 | 1952-12-31 | Inland Steel Co | Improvements in or relating to process for making steel |
| DE1408849A1 (en) * | 1960-12-22 | 1970-07-30 | Orths Dr Ing Kurt | Process for dephosphorization of iron melts and device for carrying out the process |
| DE1273551B (en) * | 1962-06-06 | 1968-07-25 | Thyssen Huette Ag | Process for refining pig iron to steel using bath agitation |
-
1967
- 1967-06-02 US US643143A patent/US3523020A/en not_active Expired - Lifetime
-
1968
- 1968-03-12 DE DE19681608315 patent/DE1608315B1/en active Pending
- 1968-05-06 FR FR1575780D patent/FR1575780A/fr not_active Expired
- 1968-05-10 GB GB22416/68A patent/GB1190487A/en not_active Expired
- 1968-05-14 SE SE06516/68A patent/SE330183B/xx unknown
- 1968-05-15 JP JP43032485A patent/JPS4930885B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3523020A (en) | 1970-08-04 |
| DE1608315B1 (en) | 1971-10-28 |
| FR1575780A (en) | 1969-07-25 |
| SE330183B (en) | 1970-11-09 |
| JPS4930885B1 (en) | 1974-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |