CN109252015A - A kind of production method of optimization ANS processing low-carbon aluminum steel - Google Patents
A kind of production method of optimization ANS processing low-carbon aluminum steel Download PDFInfo
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- CN109252015A CN109252015A CN201710569546.2A CN201710569546A CN109252015A CN 109252015 A CN109252015 A CN 109252015A CN 201710569546 A CN201710569546 A CN 201710569546A CN 109252015 A CN109252015 A CN 109252015A
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- aluminium
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- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A kind of production method of optimization ANS processing low-carbon aluminum steel, molten steel into pre- Argon operation is carried out after ANS first, and thermometric determines oxygen after stopping argon.If the liquid steel temperature that enters the station is more than when moving out 15 degree of temperature or more, to be added at one time deoxidized aluminium and composition aluminium according to oxygen value is determined, manganese iron class alloy, coke etc. is added after 3-5min is added in aluminium and carries out the operation of molten steel alloying, is moved out after net Argon；If the liquid steel temperature that enters the station not up to moves out 15 degree of temperature or more, warming temperature is then carried out first, oxygen is determined after heating, then directly deoxidized aluminium and composition aluminium are added at one time according to oxygen value at this time, manganese iron class alloy is added after 3-5min is added in aluminium and coke carries out molten steel alloying, is moved out after net Argon.The period of production method and process according to the invention, ANS processing boiling molten steel is reduced to average 25min by previous average 42min, not only reduces molten steel temperature drop, also improves the pulling rate of conticaster.
Description
Technical field
The present invention relates to the field of steel metallurgy of ANS process processing low-carbon aluminium class boiling steel more particularly to a kind of optimization ANS
Handle the production method of low-carbon aluminum steel.
Background technique
ANS process can use two kinds of production technologies of killed steel and boiling steel when producing low-carbon aluminum steel kind.This patent is directed to
Boiling steel process condition carries out production process research.
General ANS process will complete the task of deoxidation and ingredient, temperature adjustment during processing, but to guarantee ingredient
Accurate control carries out alloying operation after the processes sample such as generally requiring again, causes the processing time partially long, the average treatment period exists
Between 40-50min, cause molten steel temperature drop bigger than normal, processing load is heavier.
Summary of the invention
The object of the present invention is to provide a kind of production method of optimization ANS processing low-carbon aluminum steel, productions according to the invention
The purpose for stablizing ANS production boiling steel water treatment technology may be implemented in method and process.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of production method of optimization ANS processing low-carbon aluminum steel, the specific method is as follows:
1) molten steel into pre- Argon operation is carried out after ANS first, and thermometric determines oxygen after stopping argon；
2) it starts to process, first dip pipe is down on liquid steel level, after blowing open, decline dip pipe immediately；
3) if the liquid steel temperature that enters the station is more than when moving out 15 degree of temperature or more, basis determines oxygen value for deoxidized aluminium and composition
Aluminium is added at one time, and alloy is added after 3-5min is added in aluminium and carries out the operation of molten steel alloying, moves out after net Argon；
4) if the liquid steel temperature that enters the station carries out warming temperature, after heating lower than when moving out 15 degree of temperature or more first
Determine oxygen, be then directly added at one time deoxidized aluminium and composition aluminium according to oxygen value at this time, alloy is added after 3-5min is added in aluminium
Molten steel alloying is carried out, is moved out after net Argon.
The deoxidized aluminium and the composition aluminium amount of being added at one time is adjusted according to oxygen value height, and deoxidized aluminium calculation method maintains not
Become, when oxygen value is more than or equal to 600ppm, ingredient aluminium additional amount is 0.55-0.65kg/t steel, and when oxygen value is less than 600ppm, aluminium is added
Amount is 0.43-0.54kg/t steel.
Compared with prior art, the beneficial effects of the present invention are:
A kind of production method of optimization ANS processing low-carbon aluminum steel, production method and process according to the invention, ANS processing
The period of boiling molten steel is reduced to average 25min by previous average 42min, not only reduces molten steel temperature drop, the company of also improving
The pulling rate of casting machine.
Specific embodiment
Embodiments of the present invention are further illustrated below:
A kind of production method of optimization ANS processing low-carbon aluminum steel, the specific method is as follows:
1) molten steel is into progress pre-blowing argon operation after ANS, and thermometric determines oxygen after stopping argon；
2) it starts to process, first dip pipe is down on liquid steel level, after blowing open, decline dip pipe immediately.
3) if the liquid steel temperature that enters the station is more than when moving out 15 degree of temperature or more, basis determines oxygen value for deoxidized aluminium and composition
Aluminium is added at one time, and manganese iron class alloy, coke etc. is added after 3-5min is added in aluminium and carries out the operation of molten steel alloying, net Argon
After move out；
4) if the liquid steel temperature that enters the station carries out warming temperature, after heating lower than when moving out 15 degree of temperature or more first
Determine oxygen, be then directly added at one time deoxidized aluminium and composition aluminium according to oxygen value at this time, manganese iron is added after 3-5min is added in aluminium
Class alloy and coke etc. carry out molten steel alloying, move out after net Argon.
The deoxidized aluminium and the composition aluminium amount of being added at one time is adjusted according to oxygen value height, and deoxidized aluminium calculation method maintains not
Become, when oxygen value is more than or equal to 600ppm, ingredient aluminium additional amount is 0.55-0.65kg/t steel, and when oxygen value is less than 600ppm, aluminium is added
Amount is 0.43-0.54kg/t steel.
Production method and process according to the invention, the liquid steel temperature that enters the station are more than the place for moving out 20 degree of temperature and the above tank time
The reason time can be controlled in 20-25min, if the liquid steel temperature that enters the station is not up to the processing time for moving out 20 degree of temperature and the above tank time
It can be controlled in 25-30min.
Embodiment 1:
It is 610ppm that after ANS dip pipe drops to position, thermometric, which is 1591 DEG C, determines oxygen, and 0.62kg/t steel is added in composition aluminium, in aluminium
It is added after 3min into ladle and 2.2kg/t steel high carbon ferromanganese and 0.27kg/t steel carburant progress molten steel alloying is added, close
It is moved out after net Argon 5min after aurification, 1585 DEG C of thermometric, the ultimate constituent meets task instruction requirement.The ANS production cycle controls
20min。
Embodiment 2:
It is 580ppm that after ANS dip pipe drops to position, thermometric, which is 1601 DEG C, determines oxygen, and 0.52kg/t steel is added in composition aluminium, in aluminium
It is added after 3min into ladle and 2.3kg/t steel high carbon ferromanganese and 0.28kg/t steel carburant progress molten steel alloying is added, so
3.3kg/t steel cooling steel scrap is added afterwards and carries out molten steel cooling, is moved out after net Argon 5min, 1585 DEG C of thermometric, the ultimate constituent meets
Task instruction requirement.The ANS production cycle controls in 25min.
Embodiment 3:
After ANS dip pipe drops to position, thermometric is 1583 DEG C, and determining oxygen is 560ppm, is heated up 15 DEG C first, and composition aluminium is added
0.43kg/t steel, be added after 3min is added in aluminium into ladle 2.3kg/t steel high carbon ferromanganese and 0.28kg/t steel carburant into
Row molten steel alloying moves out after net Argon 5min, and 1583 DEG C of thermometric, the ultimate constituent meets task instruction requirement.The ANS production cycle
Control is in 29min.
Claims (2)
1. a kind of production method of optimization ANS processing low-carbon aluminum steel, the specific method is as follows:
1) molten steel into pre- Argon operation is carried out after ANS first, and thermometric determines oxygen after stopping argon；
2) it starts to process, first dip pipe is down on liquid steel level, argon gas declines dip pipe after blowing open immediately；
3) if the liquid steel temperature that enters the station is more than when moving out 15 degree of temperature or more, basis determines oxygen value for deoxidized aluminium and composition aluminium one
Secondary property is added, and alloy is added after 3-5min is added in aluminium and carries out the operation of molten steel alloying, moves out after net Argon；
If 4) liquid steel temperature that enters the station carries out warming temperature first, determines oxygen after heating lower than when moving out 15 degree of temperature or more,
Then directly deoxidized aluminium and composition aluminium are added at one time according to oxygen value at this time, alloy is added after 3-5min is added in aluminium and carries out steel
It is hydrated aurification, is moved out after net Argon.
2. a kind of production method of optimization ANS processing low-carbon aluminum steel according to claim 1, which is characterized in that described
Deoxidized aluminium and the composition aluminium amount of being added at one time are adjusted according to oxygen value height, and deoxidized aluminium calculation method remains unchanged, and oxygen value is greater than etc.
When 600ppm, ingredient aluminium additional amount is 0.55-0.65kg/t steel, and when oxygen value is less than 600ppm, aluminium additional amount is 0.43-
0.54kg/t steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569546.2A CN109252015A (en) | 2017-07-13 | 2017-07-13 | A kind of production method of optimization ANS processing low-carbon aluminum steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569546.2A CN109252015A (en) | 2017-07-13 | 2017-07-13 | A kind of production method of optimization ANS processing low-carbon aluminum steel |
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| CN109252015A true CN109252015A (en) | 2019-01-22 |
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| CN201710569546.2A Pending CN109252015A (en) | 2017-07-13 | 2017-07-13 | A kind of production method of optimization ANS processing low-carbon aluminum steel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948979A (en) * | 2009-07-10 | 2011-01-19 | 攀钢集团研究院有限公司 | Method for producing industrial pure iron |
| CN105861781A (en) * | 2015-01-23 | 2016-08-17 | 鞍钢股份有限公司 | Refining method for silicon-killed steel ANS process |
| CN106191376A (en) * | 2016-08-24 | 2016-12-07 | 武汉钢铁股份有限公司 | Ultra-low carbon aluminum killed steel vacuum adds carbon pre-deoxidizing technology |
-
2017
- 2017-07-13 CN CN201710569546.2A patent/CN109252015A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948979A (en) * | 2009-07-10 | 2011-01-19 | 攀钢集团研究院有限公司 | Method for producing industrial pure iron |
| CN105861781A (en) * | 2015-01-23 | 2016-08-17 | 鞍钢股份有限公司 | Refining method for silicon-killed steel ANS process |
| CN106191376A (en) * | 2016-08-24 | 2016-12-07 | 武汉钢铁股份有限公司 | Ultra-low carbon aluminum killed steel vacuum adds carbon pre-deoxidizing technology |
Non-Patent Citations (1)
| Title |
|---|
| 马竹梧等: "《钢铁工业自动化 炼钢卷》", 31 July 2003, 冶金工业出版社 * |
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Application publication date: 20190122 |
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