IT1157631B - Oxygen converter steel refining process - Google Patents
Oxygen converter steel refining processInfo
- Publication number
- IT1157631B IT1157631B IT12439/82A IT1243982A IT1157631B IT 1157631 B IT1157631 B IT 1157631B IT 12439/82 A IT12439/82 A IT 12439/82A IT 1243982 A IT1243982 A IT 1243982A IT 1157631 B IT1157631 B IT 1157631B
- Authority
- IT
- Italy
- Prior art keywords
- desulphurisation
- dephosphorisation
- na2o
- refining process
- slag
- Prior art date
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 229910052760 oxygen Inorganic materials 0.000 title abstract 3
- 239000001301 oxygen Substances 0.000 title abstract 3
- 238000007670 refining Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 3
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 3
- 235000017550 sodium carbonate Nutrition 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000002893 slag Substances 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 229910001424 calcium ion Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 235000021317 phosphate Nutrition 0.000 abstract 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 229910001415 sodium ion Inorganic materials 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
In an oxygen converter refining process, desulphurisation and dephosphorisation of the iron bath is carried out using, apart from basic cpds. such as CaO, MgO and MnO contained in the flux or slag, sodium cpds. such as Na2O added in the form of sodium carbonate as a component of the converter charge. The sodium carbonate is pref. added as briquettes or granules of 5-100 mm. during oxygen blowing. The process gives improved desulphurisation and dephosphorisation since, when incorporated in the slag, Na2O has a very high equilibrium constant for desulphurisation and dephosphorisation reactions and Na ions have 1070 times the desulphurisation power of Ca ions. Additionally, both Na2CO3 and Na2O are suitable for use in oxidising environments and form silicates, sulphates and phosphates of low m.pt.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT12439/82A IT1157631B (en) | 1982-02-16 | 1982-02-16 | Oxygen converter steel refining process |
| US06/379,082 US4405364A (en) | 1981-05-20 | 1982-05-17 | Process of refining iron in oxygen converters with additions of materials containing sodium carbonate |
| GB08214534A GB2101636B (en) | 1981-05-20 | 1982-05-19 | Refining iron or steel in oxygen converters with the addition of at least one compound of sodium |
| FR8208850A FR2506330B1 (en) | 1981-05-20 | 1982-05-19 | PROCESS FOR REFINING IRON IN OXYGEN CONVERTERS WITH ADDITION OF MATERIALS CONTAINING SODIUM CARBONATE |
| DE3218975A DE3218975A1 (en) | 1981-05-20 | 1982-05-19 | METHOD FOR REFRESHING IRON IN OXYGEN CONVERTERS WITH MATERIALS CONTAINING SODIUM CARBONATE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT12439/82A IT1157631B (en) | 1982-02-16 | 1982-02-16 | Oxygen converter steel refining process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8212439A0 IT8212439A0 (en) | 1982-02-16 |
| IT1157631B true IT1157631B (en) | 1987-02-18 |
Family
ID=11140170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT12439/82A IT1157631B (en) | 1981-05-20 | 1982-02-16 | Oxygen converter steel refining process |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1157631B (en) |
-
1982
- 1982-02-16 IT IT12439/82A patent/IT1157631B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8212439A0 (en) | 1982-02-16 |
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