ES409323A1 - Method of obtaining low-phosphorus contents in medium-and high-carbon steels in a bottom-blown oxygen steelmaking furnace - Google Patents
Method of obtaining low-phosphorus contents in medium-and high-carbon steels in a bottom-blown oxygen steelmaking furnaceInfo
- Publication number
- ES409323A1 ES409323A1 ES409323A ES409323A ES409323A1 ES 409323 A1 ES409323 A1 ES 409323A1 ES 409323 A ES409323 A ES 409323A ES 409323 A ES409323 A ES 409323A ES 409323 A1 ES409323 A1 ES 409323A1
- Authority
- ES
- Spain
- Prior art keywords
- lime
- carbon
- oxygen
- medium
- carbon steels
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 229910052760 oxygen Inorganic materials 0.000 title abstract 4
- 239000001301 oxygen Substances 0.000 title abstract 4
- 229910000975 Carbon steel Inorganic materials 0.000 title 1
- 229910052698 phosphorus Inorganic materials 0.000 title 1
- 239000011574 phosphorus Substances 0.000 title 1
- 238000009628 steelmaking Methods 0.000 title 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 5
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 5
- 239000004571 lime Substances 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- 238000002347 injection Methods 0.000 abstract 3
- 239000007924 injection Substances 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 230000009919 sequestration Effects 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
- C21C5/34—Blowing through the bath
-
- 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
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)
- 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
Bottom injection procedure for the refining of cast iron, in which process carbon and other impurities are oxidized by introducing a stream of an oxygen-containing gas, said gas being introduced in accordance with the practice of "carbon sequestration "in order not to lower the carbon level of the resulting refined molten steel to below about 0.2% and in which process finely divided lime is entrained within said oxygen-containing gas stream; characterized in that it includes adding said lime in such a proportion that a global average loading rate of lime, L0, of 1.44 to 2.56 kg of lime per m3 of oxygen is achieved, the average loading rate being, of lime, for the first half of the injection period of at least 10% less than L0 and the average total charge regime being, for the second half of the injection period, L2, of at least 10% greater than L0; and controlling the temperature of the end point of said refined molten steel so that it does not exceed the temperature supplied by the equation: Tmax (ºC) = 1665.5-55.5 (C) where C is the desired level of carbon in percent. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20535371A | 1971-12-06 | 1971-12-06 | |
| US00306138A US3826647A (en) | 1971-12-06 | 1972-11-13 | Method of obtaining low-phosphorus contents in medium-and high-carbon steels in a bottom-blown oxygen steelmaking furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES409323A1 true ES409323A1 (en) | 1976-03-16 |
Family
ID=26900357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES409323A Expired ES409323A1 (en) | 1971-12-06 | 1972-12-05 | Method of obtaining low-phosphorus contents in medium-and high-carbon steels in a bottom-blown oxygen steelmaking furnace |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3826647A (en) |
| JP (1) | JPS5545607B2 (en) |
| AR (1) | AR198963A1 (en) |
| BE (1) | BE792124A (en) |
| CA (1) | CA974774A (en) |
| DD (1) | DD102164A5 (en) |
| DE (1) | DE2259533A1 (en) |
| ES (1) | ES409323A1 (en) |
| FR (1) | FR2162461B1 (en) |
| GB (1) | GB1415535A (en) |
| IT (1) | IT982369B (en) |
| LU (1) | LU66599A1 (en) |
| NL (1) | NL7216486A (en) |
| SE (1) | SE407694B (en) |
| TR (1) | TR17930A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743919A (en) * | 1980-08-30 | 1982-03-12 | Kawasaki Steel Corp | Method for blow refining in top and/or bottom-blown converter |
| JPS57140810A (en) * | 1981-02-23 | 1982-08-31 | Nippon Steel Corp | Refining method for steel |
| JPS6284354U (en) * | 1985-11-14 | 1987-05-29 | ||
| JPS62111761U (en) * | 1986-01-07 | 1987-07-16 | ||
| US4987086A (en) * | 1987-11-30 | 1991-01-22 | Becton, Dickinson And Company | Method for analysis of subpopulations of cells |
-
0
- BE BE792124D patent/BE792124A/en unknown
-
1972
- 1972-11-13 US US00306138A patent/US3826647A/en not_active Expired - Lifetime
- 1972-12-04 IT IT32465/72A patent/IT982369B/en active
- 1972-12-05 NL NL7216486A patent/NL7216486A/xx not_active Application Discontinuation
- 1972-12-05 ES ES409323A patent/ES409323A1/en not_active Expired
- 1972-12-05 LU LU66599A patent/LU66599A1/xx unknown
- 1972-12-05 TR TR17930A patent/TR17930A/en unknown
- 1972-12-05 GB GB5611072A patent/GB1415535A/en not_active Expired
- 1972-12-05 SE SE7215839A patent/SE407694B/en unknown
- 1972-12-05 DE DE2259533A patent/DE2259533A1/en active Pending
- 1972-12-05 CA CA158,066A patent/CA974774A/en not_active Expired
- 1972-12-05 FR FR7243249A patent/FR2162461B1/fr not_active Expired
- 1972-12-05 AR AR245481A patent/AR198963A1/en active
- 1972-12-06 JP JP12236072A patent/JPS5545607B2/ja not_active Expired
- 1972-12-06 DD DD167322A patent/DD102164A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR198963A1 (en) | 1974-07-31 |
| FR2162461A1 (en) | 1973-07-20 |
| LU66599A1 (en) | 1973-02-08 |
| DD102164A5 (en) | 1973-12-05 |
| GB1415535A (en) | 1975-11-26 |
| CA974774A (en) | 1975-09-23 |
| US3826647A (en) | 1974-07-30 |
| TR17930A (en) | 1976-11-01 |
| FR2162461B1 (en) | 1977-01-14 |
| JPS5545607B2 (en) | 1980-11-19 |
| SE407694B (en) | 1979-04-09 |
| IT982369B (en) | 1974-10-21 |
| DE2259533A1 (en) | 1973-06-14 |
| JPS4876715A (en) | 1973-10-16 |
| NL7216486A (en) | 1973-06-08 |
| BE792124A (en) | 1973-03-16 |
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