CN107537986A - Method for recycling iron scale on continuous casting slab - Google Patents
Method for recycling iron scale on continuous casting slab Download PDFInfo
- Publication number
- CN107537986A CN107537986A CN201710556221.0A CN201710556221A CN107537986A CN 107537986 A CN107537986 A CN 107537986A CN 201710556221 A CN201710556221 A CN 201710556221A CN 107537986 A CN107537986 A CN 107537986A
- Authority
- CN
- China
- Prior art keywords
- continuous casting
- steel
- iron scale
- converter
- steel scrap
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 69
- 238000009749 continuous casting Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 152
- 239000010959 steel Substances 0.000 claims abstract description 152
- 238000004140 cleaning Methods 0.000 claims abstract description 42
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 14
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009491 slugging Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a method for recycling iron scale on a continuous casting plate blank, which is applied to the technical field of steel making and comprises the following steps: adding iron scales generated by cleaning the continuous casting plate blank into a scrap steel hopper containing scrap steel; adding the scrap steel contained in the scrap steel hopper and the iron scale generated by cleaning the continuous casting slab into a converter; in the converter blowing process, an oxygen lance on the converter is controlled to be at a preset high lance position for blowing oxygen for 2-3 minutes so as to complete the earlier stage blowing in the converter smelting process. The invention reduces metal loss, achieves the purposes of improving the slagging speed and reducing the consumption of steel materials.
Description
Technical field
The present invention relates to the method that iron scale in steelmaking technical field, more particularly to a kind of continuous casting steel billet recycles.
Background technology
With the increase of variety steel, the ratio of ray examination increases therewith under slab, passes through scafing and manual cleaning meeting
Substantial amounts of iron scale is produced, the main component of iron scale is Fe2O3、Fe3O4, FeO, if it is possible to rationally utilize these money
Source, production cost can be reduced, avoid waste of resource, while environmental protection and energy saving can be played a part of.
In steel mill, iron scale is used as steel-making fluxing and dissolving after acting substantially as sintering auxiliary iron-bearing material or pressure ball at present
Agent, but need complicated technological process and processing equipment, therefore, the recycling for the iron scale cleared up from continuous casting steel billet
Complex process.
The content of the invention
The embodiment of the present invention solves prior art by providing a kind of method that iron scale recycles on continuous casting steel billet
The technical problem of the complex process of the recycling for the iron scale cleared up from continuous casting steel billet.
The method that iron scale recycles on a kind of continuous casting steel billet provided in an embodiment of the present invention, including：
Iron scale caused by cleaning continuous casting steel billet is added to being equipped with the steel scrap bucket of steel scrap；
Iron scale caused by the steel scrap housed in the steel scrap bucket and the cleaning continuous casting steel billet is added in the lump
Into the converter；
Bessemerized, wherein, during described bessemerize, the oxygen rifle in the converter is controlled with predetermined height
The rifle position progress oxygen blown time is 2-3 minutes, to complete the blowing early stage of the converter smelting.
Optionally, it is described to add iron scale caused by cleaning continuous casting steel billet to being equipped with the steel scrap bucket of steel scrap, wrap
Include：
Iron scale caused by the cleaning continuous casting steel billet is put together between steel scrap；
Iron oxide caused by the cleaning continuous casting steel billet placed between the steel scrap is added described useless to being equipped with
In the steel scrap bucket of steel.
Optionally, it is described to add iron oxide caused by the cleaning continuous casting steel billet placed between the steel scrap to having held
It is equipped with the steel scrap bucket of the steel scrap, including：
The steel scrap bucket of iron scale caused by the steel scrap and the cleaning continuous casting steel billet will be equipped with simultaneously by overhead traveling crane
It is hoisted to the converter position；
Iron scale caused by the steel scrap housed in the steel scrap bucket and the cleaning continuous casting steel billet is added in the lump
Into the converter.
Optionally, it is described by iron oxide caused by the steel scrap housed in the steel scrap bucket and the cleaning continuous casting steel billet
Skin adds into the converter in the lump, including：
Obtain the temperature and molten steel composition of the current heat of the converter；
Steel scrap and cleaning continuous casting according to needed for the temperature of the current heat of the converter and molten steel composition determine current heat
The gross weight of iron scale caused by slab；
Iron scale caused by the steel scrap and the cleaning continuous casting steel billet according to needed for the current heat of the converter
Gross weight, added by the steel scrap bucket into the converter needed for oxidation caused by the steel scrap and the cleaning continuous casting steel billet
Iron sheet.
Optionally, the steel scrap and the cleaning continuous casting added by the steel scrap bucket to the current heat of the converter
The gross weight of iron scale caused by slab is specially 3~5 tons.
The one or more technical schemes provided in the embodiment of the present invention, have at least the following technical effects or advantages：
The iron scale cleared up from continuous casting steel billet is added directly into converter by steel scrap bucket and utilized, avoid to from
The iron scale cleared up on continuous casting steel billet recycles after carrying out complicated, cumbersome technological process, so as to reduce production cost, keeps away
Exempt from waste of resource, while environmental protection and energy saving can be played a part of.It is not aqueous and oily etc. miscellaneous and iron scale iron oxide content is high
Matter, it is added directly into converter as converter fluxing and dissolving agent, reaches and improve slugging speed, reduce metal loss, reduces
The purpose of steel technology.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing.
Fig. 1 is the method flow diagram that iron scale recycles on continuous casting steel billet provided in an embodiment of the present invention.
Embodiment
In view of there is the technology of the complex process of the recycling for the iron scale cleared up from continuous casting steel billet in prior art
Problem, the embodiment of the present invention provide the method that iron scale recycles on a kind of continuous casting steel billet.
Technical solution of the present invention is described in detail below by specific embodiment, it should be understood that the embodiment of the present invention with
And the specific features in embodiment are the detailed description to technical solution of the present invention, rather than the limit to technical solution of the present invention
Fixed, in the case where not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can be mutually combined.
With reference to shown in figure 1, the method for iron scale recycling on a kind of continuous casting steel billet provided in an embodiment of the present invention, including
Following steps：
First, S101 is performed：Iron scale caused by cleaning continuous casting steel billet is added to being equipped with the steel scrap bucket of steel scrap.
High-temperature molten steel coagulation forming in continuous cast mold is formed after certain thickness green shell, and strand goes out table after crystallizer
Face temperature is higher, and exposure in atmosphere, reacts with the water vapour of oxygen and two cold houses, generation iron oxide, in production process,
Casting billet surface produces substantial amounts of iron scale, and after strand goes out withdrawal straightening machine, iron scale bulk comes off, and influences slab quality and steel
Water recovery rate.
In sheet billet continuous casting production process, the impurity meeting float assembly in molten steel forms oxygen to slab upper strata on the surface of slab
Change iron sheet, the iron scale of formation is cleared up steel slab surface by manual cleaning or by hot scarfing machine, to remove
The iron scale and continuous casting residue of slab surface.
Specifically, in S101, iron scale caused by cleaning continuous casting steel billet is put together between steel scrap；It will be put between steel scrap
The cleaning iron oxide caused by continuous casting steel billet put is added to being equipped with the steel scrap bucket of steel scrap.So as in follow-up S102
Added in step steel scrap when just iron scale be added to converter suffered simultaneously, therefore will not additional process complexity.
Then, S102 is performed：Iron scale caused by the steel scrap housed in steel scrap bucket and cleaning continuous casting steel billet is added in the lump
Enter into converter.
The cleaning iron scale caused by continuous casting steel billet housed in steel scrap bucket is added in the step into converter, specifically：
The steel scrap bucket for being equipped with iron scale caused by steel scrap and cleaning continuous casting steel billet simultaneously is first hoisted to converter position；Again will
Iron scale caused by the steel scrap and cleaning continuous casting steel billet housed in steel scrap bucket is added into converter in the lump.
Can be in a upper heat specifically, at the time of adding iron scale caused by cleaning continuous casting steel billet into converter
Bessemerize end and completion of tapping after, add into converter steel scrap and cleaning continuous casting steel billet production in the lump by steel scrap bucket
Raw iron scale.Can also be after slag former is added to converter, added in the lump into converter by steel scrap bucket steel scrap and
Clear up iron scale caused by continuous casting steel billet.
Specifically, iron oxide caused by the steel scrap from steel scrap bucket to the current heat of converter and cleaning continuous casting steel billet that are added by
The gross weight of skin is specially 3~5 tons.
In specific implementation process, the total of iron scale caused by steel scrap and cleaning continuous casting steel billet is added in order to accurately control
Weight, specific implementation process are：
Step 1, obtain converter current heat temperature and molten steel composition；
Step 2, the temperature according to the current heat of converter and molten steel composition determine current heat needed for steel scrap and cleaning connect
The gross weight of iron scale caused by cast panel base；
Step 3, according to needed for the current heat of converter steel scrap and cleaning continuous casting steel billet caused by iron scale gross weight,
Iron scale caused by steel scrap needed for being added by steel scrap bucket into converter and cleaning continuous casting steel billet.
After S102, S103 is then carried out：Bessemerized, wherein, during bessemerizing, control converter
On oxygen rifle the oxygen blown time is carried out as 2-3 minutes using predetermined high rifle position, blown with completing the early stage of converter smelting.
In specific implementation process, preferably, be accurately controlled in 2 minutes with the predetermined high rifle position progress oxygen blown time, from
And more accurately complete blowing early stage.
It should be noted that the process of bessemerizing is divided into blowing early stage, mid-term blowing and latter stage blowing three phases, turning
During stove blows, it is a certain in 2~3 minutes control oxygen rifle in converter to be in predetermined high rifle position to carry out the oxygen blown time
At the moment, the rifle position of oxygen rifle is adjusted to predetermined low rifle position and starts mid-term blowing.So that the consuming duration of blowing at initial stage
Can be with reduction 1 minute or so.
Specifically, predetermined high rifle position is higher than predetermined low rifle position, but regarding the difference of concrete condition, the tool of predetermined high rifle position
Height value, the specific height value difference for making a reservation for low rifle position, herein without concrete restriction.
It should be noted that in embodiments of the present invention, because iron scale iron oxide content is high and not aqueous and oily etc.
Impurity, it is directly added into converter and is used as converter fluxing and dissolving agent, to improve steel-making efficiency, so that the process of bessemerizing is passed through
The amount of oxygen.Mid-term blows and the rifle position of latter stage blowing and duration are with reference to may be referred to prior art, succinct for specification,
Repeat no more herein.
The one or more embodiments provided in the embodiment of the present invention, have at least the following technical effects or advantages：
The iron scale cleared up from continuous casting steel billet is added directly into converter by steel scrap bucket and utilized, avoid to from
The iron scale cleared up on continuous casting steel billet recycles after carrying out complicated, cumbersome technological process, can reduce production cost, avoid wave
Take resource, while environmental protection and energy saving can be played a part of.And iron scale iron oxide content is high, and it is not aqueous and oily etc. miscellaneous
Matter, as converter fluxing and dissolving agent, reduce metal loss, reach and improve slugging speed, reduce the purpose of steel technology.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (5)
1. a kind of method that iron scale recycles on continuous casting steel billet, it is characterised in that including：
Iron scale caused by cleaning continuous casting steel billet is added to being equipped with the steel scrap bucket of steel scrap；
Iron scale caused by the steel scrap housed in the steel scrap bucket and the cleaning continuous casting steel billet is added to institute in the lump
State in converter；
Bessemerized, wherein, during described bessemerize, control the oxygen rifle in the converter to make a reservation for high rifle position
It is 2-3 minutes to carry out the oxygen blown time, to complete the blowing early stage of the converter smelting.
2. the method that iron scale recycles on continuous casting steel billet as claimed in claim 1, it is characterised in that described to connect cleaning
Iron scale caused by cast panel base is added to being equipped with the steel scrap bucket of steel scrap, including：
Iron scale caused by the cleaning continuous casting steel billet is put together between steel scrap；
Iron oxide caused by the cleaning continuous casting steel billet placed between the steel scrap is added to being equipped with the steel scrap
In the steel scrap bucket.
3. the method that iron scale recycles on continuous casting steel billet as claimed in claim 2, it is characterised in that described described to give up
Iron oxide caused by the cleaning continuous casting steel billet placed between steel is added to being equipped with the steel scrap bucket of the steel scrap,
Including：
The steel scrap bucket handling of iron scale caused by the steel scrap and the cleaning continuous casting steel billet will be equipped with simultaneously by overhead traveling crane
To the converter position；
Iron scale caused by the steel scrap housed in the steel scrap bucket and the cleaning continuous casting steel billet is added to institute in the lump
State in converter.
4. the method that iron scale recycles on continuous casting steel billet as claimed in claim 2 or claim 3, it is characterised in that described by institute
Iron scale caused by stating the steel scrap housed in steel scrap bucket and the cleaning continuous casting steel billet adds into the converter in the lump,
Including：
Obtain the temperature and molten steel composition of the current heat of the converter；
The steel scrap and the cleaning according to needed for the temperature of the current heat of the converter and molten steel composition determine current heat
The gross weight of iron scale caused by continuous casting steel billet；
The steel scrap and the gross weight for clearing up iron scale caused by continuous casting steel billet according to needed for the current heat of the converter
Amount, is added by the steel scrap bucket into the converter needed for the steel scrap and described clear up iron oxide caused by continuous casting steel billet
Skin.
5. the method that iron scale recycles on the continuous casting steel billet described in a kind of claim 1, it is characterised in that by described useless
The gross weight of iron scale caused by the steel scrap and the cleaning continuous casting steel billet that steel bucket adds to the current heat of the converter
Amount is specially 3~5 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556221.0A CN107537986A (en) | 2017-07-10 | 2017-07-10 | Method for recycling iron scale on continuous casting slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556221.0A CN107537986A (en) | 2017-07-10 | 2017-07-10 | Method for recycling iron scale on continuous casting slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107537986A true CN107537986A (en) | 2018-01-05 |
Family
ID=60970200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710556221.0A Pending CN107537986A (en) | 2017-07-10 | 2017-07-10 | Method for recycling iron scale on continuous casting slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107537986A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323101A (en) * | 2022-08-02 | 2022-11-11 | 鞍钢股份有限公司 | Method for quickly striking fire for converter oxygen lance |
| CN115747402A (en) * | 2022-06-01 | 2023-03-07 | 南京钢铁股份有限公司 | Recycling method of iron scale converter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470653A (en) * | 2003-07-04 | 2004-01-28 | 钢铁研究总院 | Converter steelmaking process |
| CN102424894A (en) * | 2011-12-05 | 2012-04-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing 23MnB steel in converter process |
| CN104531937A (en) * | 2014-12-17 | 2015-04-22 | 山东钢铁集团淄博张钢有限公司 | Direct steelmaking process using iron ore in converter system |
| CN104975129A (en) * | 2014-04-08 | 2015-10-14 | 宝钢资源有限公司 | Electrical steel scrap recovery treatment method |
| CN105063266A (en) * | 2015-08-31 | 2015-11-18 | 山东钢铁股份有限公司 | Converter steelmaking method |
| CN105603320A (en) * | 2016-01-04 | 2016-05-25 | 唐山钢铁集团有限责任公司 | Method for producing container plate by means of thin slab casting and rolling |
-
2017
- 2017-07-10 CN CN201710556221.0A patent/CN107537986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470653A (en) * | 2003-07-04 | 2004-01-28 | 钢铁研究总院 | Converter steelmaking process |
| CN102424894A (en) * | 2011-12-05 | 2012-04-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing 23MnB steel in converter process |
| CN104975129A (en) * | 2014-04-08 | 2015-10-14 | 宝钢资源有限公司 | Electrical steel scrap recovery treatment method |
| CN104531937A (en) * | 2014-12-17 | 2015-04-22 | 山东钢铁集团淄博张钢有限公司 | Direct steelmaking process using iron ore in converter system |
| CN105063266A (en) * | 2015-08-31 | 2015-11-18 | 山东钢铁股份有限公司 | Converter steelmaking method |
| CN105603320A (en) * | 2016-01-04 | 2016-05-25 | 唐山钢铁集团有限责任公司 | Method for producing container plate by means of thin slab casting and rolling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747402A (en) * | 2022-06-01 | 2023-03-07 | 南京钢铁股份有限公司 | Recycling method of iron scale converter |
| CN115323101A (en) * | 2022-08-02 | 2022-11-11 | 鞍钢股份有限公司 | Method for quickly striking fire for converter oxygen lance |
| CN115323101B (en) * | 2022-08-02 | 2023-12-15 | 鞍钢股份有限公司 | Method for rapidly igniting oxygen lance of converter |
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Application publication date: 20180105 |