CN109750136A - A kind of method that ladle molten steel standing prevents secondary oxidation in the process - Google Patents
A kind of method that ladle molten steel standing prevents secondary oxidation in the process Download PDFInfo
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- CN109750136A CN109750136A CN201910027251.1A CN201910027251A CN109750136A CN 109750136 A CN109750136 A CN 109750136A CN 201910027251 A CN201910027251 A CN 201910027251A CN 109750136 A CN109750136 A CN 109750136A
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- Prior art keywords
- molten steel
- ladle
- secondary oxidation
- prevents secondary
- during standing
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- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A kind of method for preventing secondary oxidation during standing the invention discloses ladle molten steel is that argon filling seals above molten steel when ladle is stood.Method of the invention can effectively reduce molten steel and secondary oxidation occurs during standing, reduce molten steel inclusion and generate, improve molten steel cleanness.
Description
Technical field
A kind of method for preventing secondary oxidation during standing the present invention relates to ladle molten steel.
Background technique
The secondary oxidation of molten steel directly affects the cleanliness of molten steel, and preventing molten steel secondary oxidation is always field of steel-making research
Emphasis.The secondary oxidation of molten steel is related to links, it is necessary to molten steel secondary oxidation is prevented in each process procedure, it just can be effective
Control molten steel cleanness.Ladle standing is the important component part of steel making working procedure, and time of repose is also longer.Ladle molten steel from turn
Furnace is tapped to refining or continuous casting and during being refined to continuous casting standing, and the steel slag above ladle molten steel is directly contacted with air, meeting
Cause steel slag oxidisability increase, indirect secondary oxidation molten steel, especially upon standing between it is longer when, secondary oxidation is serious.Reduce
The secondary oxidation that ladle stands process molten steel is of great significance.
Summary of the invention
In order to solve the above-mentioned technical problem, it is prevented during being stood the object of the present invention is to provide a kind of ladle molten steel secondary
The method of oxidation reduces the secondary oxidation pollution of steel slag and molten steel, improves molten steel cleanness level.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
The method that a kind of ladle molten steel of the present invention prevents secondary oxidation during standing, when ladle is stood above molten steel
Argon filling sealing.
Further, it includes standing that process, to be refined to continuous casting quiet after converter tapping to refining or continuous casting that the ladle, which is stood,
Set process.
Further, the mode of argon filling sealing includes that tunger tube argon filling mode or BOTTOM ARGON BLOWING floating are directlyed adopt above molten steel
The combined mode of mode above to molten steel or both.
Further, while being suitable in ladle stamp or not covering.
Further, argon filling mode includes continuous argon filling or interruption argon filling.
Further, argon blowing time is 1-2 minutes.
Compared with prior art, advantageous effects of the invention:
By the way that when ladle is stood, argon filling is sealed above molten steel, reduction molten steel occurs secondary the present invention during standing
Oxidation reduces molten steel inclusion and generates, improves molten steel cleanness.
Specific embodiment
After RH handles IF steel, when leaving RH station progress ladle stamp waiting crane, argon gas, argon are blown into ladle bottom
Throughput guarantees the small floating of molten steel ladle, cannot exposed molten steel.Argon blowing time is maintained at 1-2 minutes or so, makes steel
Air above Baogang's liquid is discharged as far as possible, then stops Argon, completes sealing, and waiting is left.
Stood in whole process escapeing to casting machine tundish revolving platform, realize ladle molten steel and air effectively every
From reducing ladle molten steel secondary pollution, improve the qualification rate of molten steel quality and product.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
Claims (6)
1. a kind of method that ladle molten steel prevents secondary oxidation during standing, it is characterised in that: when ladle is stood in molten steel
The sealing of top argon filling.
2. the method that ladle molten steel according to claim 1 prevents secondary oxidation during standing, it is characterised in that: described
Ladle stand include converter tapping after to refining or continuous casting stand process, be refined to continuous casting stand process.
3. the method that ladle molten steel according to claim 1 prevents secondary oxidation during standing, it is characterised in that: argon filling
The mode of sealing includes directlying adopt tunger tube argon filling mode above molten steel or BOTTOM ARGON BLOWING floats up to mode or two above molten steel
The mode of person's combination.
4. the method that ladle molten steel according to claim 1 prevents secondary oxidation during standing, it is characterised in that: simultaneously
Suitable in ladle stamp or not covering.
5. the method that ladle molten steel according to claim 1 prevents secondary oxidation during standing, it is characterised in that: argon filling
Mode includes continuous argon filling or interruption argon filling.
6. the method that ladle molten steel according to claim 1 prevents secondary oxidation during standing, it is characterised in that: Argon
Time is 1-2 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027251.1A CN109750136A (en) | 2019-01-11 | 2019-01-11 | A kind of method that ladle molten steel standing prevents secondary oxidation in the process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027251.1A CN109750136A (en) | 2019-01-11 | 2019-01-11 | A kind of method that ladle molten steel standing prevents secondary oxidation in the process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109750136A true CN109750136A (en) | 2019-05-14 |
Family
ID=66405469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910027251.1A Pending CN109750136A (en) | 2019-01-11 | 2019-01-11 | A kind of method that ladle molten steel standing prevents secondary oxidation in the process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109750136A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756566U (en) * | 2010-04-22 | 2011-03-09 | 三明市毅君机械铸造有限公司 | Steel ladle melting argon-blowing secondary oxidation apparatus |
| CN103451371A (en) * | 2013-09-10 | 2013-12-18 | 泰州鑫宇精密铸造有限公司 | Covering argon blowing protective casting process and device of induction furnace molten steel |
| CN205673577U (en) * | 2016-06-14 | 2016-11-09 | 河北钢铁股份有限公司承德分公司 | A kind of device preventing Metal in Tundish secondary oxidation |
| CN106881457A (en) * | 2017-03-28 | 2017-06-23 | 马鞍山钢铁股份有限公司 | Molten steel pours device and part is sealed with argon and the method that part carries out argon envelope is sealed using argon |
| CN107608397A (en) * | 2017-08-21 | 2018-01-19 | 河钢股份有限公司邯郸分公司 | LF refining adjusts the device and method of ladle bottom blowing argon flow amount during standing |
| CN108103271A (en) * | 2018-01-25 | 2018-06-01 | 石家庄钢铁有限责任公司 | A kind of device and method for preventing molten steel secondary oxidation |
-
2019
- 2019-01-11 CN CN201910027251.1A patent/CN109750136A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756566U (en) * | 2010-04-22 | 2011-03-09 | 三明市毅君机械铸造有限公司 | Steel ladle melting argon-blowing secondary oxidation apparatus |
| CN103451371A (en) * | 2013-09-10 | 2013-12-18 | 泰州鑫宇精密铸造有限公司 | Covering argon blowing protective casting process and device of induction furnace molten steel |
| CN205673577U (en) * | 2016-06-14 | 2016-11-09 | 河北钢铁股份有限公司承德分公司 | A kind of device preventing Metal in Tundish secondary oxidation |
| CN106881457A (en) * | 2017-03-28 | 2017-06-23 | 马鞍山钢铁股份有限公司 | Molten steel pours device and part is sealed with argon and the method that part carries out argon envelope is sealed using argon |
| CN107608397A (en) * | 2017-08-21 | 2018-01-19 | 河钢股份有限公司邯郸分公司 | LF refining adjusts the device and method of ladle bottom blowing argon flow amount during standing |
| CN108103271A (en) * | 2018-01-25 | 2018-06-01 | 石家庄钢铁有限责任公司 | A kind of device and method for preventing molten steel secondary oxidation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190514 |
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| RJ01 | Rejection of invention patent application after publication |