GB852373A - Method of refining silicon-containing pig iron with oxygen in a rotary furnace - Google Patents
Method of refining silicon-containing pig iron with oxygen in a rotary furnaceInfo
- Publication number
- GB852373A GB852373A GB3128/58A GB312858A GB852373A GB 852373 A GB852373 A GB 852373A GB 3128/58 A GB3128/58 A GB 3128/58A GB 312858 A GB312858 A GB 312858A GB 852373 A GB852373 A GB 852373A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slag
- refining
- oxygen
- pig iron
- furnace
- 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
- 238000007670 refining Methods 0.000 title abstract 6
- 229910000805 Pig iron Inorganic materials 0.000 title abstract 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract 3
- 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
- 229910052710 silicon Inorganic materials 0.000 title abstract 3
- 239000010703 silicon Substances 0.000 title abstract 3
- 239000002893 slag Substances 0.000 abstract 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 238000007664 blowing Methods 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C21C1/00—Refining of pig-iron; Cast iron
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)
Abstract
A method of refining pig iron rich in silicon by blowing oxygen on to or into a melt held in a rotary furnace and forming a basic slag, maintaining the temperature below 1550 DEG C., tapping a first slag when the silicon content of the iron melt is less than 0.3%, p this slag having a (CaO + MgO) to SiO2 ratio between 1 and 2 and preferably 1.2 and 1.6, and in a second stage adding new slag forming material and continuing the blowing until the desired degree of refining has been attained. The vessel is rotated at at least 5 r.p.m. and oxygen blowing is stopped when, or a short while before, rotation of the furnace is stopped. By maintaining the silica content of the second slag below 20% and preferably below 15% it may remain solid or viscous throughout the refining period. It may be finally removed by raising the temperature of the furnace or, alternatively, may be left after tapping the refined steel to form part of the slag forming material for the next operation. In a modification, after the first stage is completed, the pig iron is tapped and subjected to a conventional refining treatment or it may be granulated by pouring into water and dry refining according to the process of Specification 770,933. Specifications 677,349 and 789,258 also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE852373X | 1957-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB852373A true GB852373A (en) | 1960-10-26 |
Family
ID=20362694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3128/58A Expired GB852373A (en) | 1957-02-08 | 1958-01-30 | Method of refining silicon-containing pig iron with oxygen in a rotary furnace |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB852373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145245A (en) * | 1960-08-02 | 1964-08-18 | Siderurgie Fse Inst Rech | Converter arrangement |
-
1958
- 1958-01-30 GB GB3128/58A patent/GB852373A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145245A (en) * | 1960-08-02 | 1964-08-18 | Siderurgie Fse Inst Rech | Converter arrangement |
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