CN108893575A - It is a kind of to refine the slag former applied in production - Google Patents
It is a kind of to refine the slag former applied in production Download PDFInfo
- Publication number
- CN108893575A CN108893575A CN201810734687.XA CN201810734687A CN108893575A CN 108893575 A CN108893575 A CN 108893575A CN 201810734687 A CN201810734687 A CN 201810734687A CN 108893575 A CN108893575 A CN 108893575A
- Authority
- CN
- China
- Prior art keywords
- slag
- slag former
- lime
- former
- refining
- 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
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
- 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
- C21C7/076—Use of slags or fluxes as treating agents
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses the slag former applied in a kind of refining production, the mass percentage content of each main component of slag former is as follows：CaO 42-55%, SiO2 10.5-12.1%, MgO 6.5-11.5%, Al2O3 1.12-3.25%, the granularity of the slag former are 5-25mm, and slag former described in converter use replaces the lime of mass percent 20~30% to be added in ladle in tapping process.The present invention can replace part lime and carry out slag making, meet refining furnace slagging process basicity, slag system demand, and slab performance, quality are normal, achieve the purpose that substitute lime；Improved slag former stable components, cheap simultaneously have achieved the purpose that reduce slag charge cost.
Description
Technical field
The present invention relates to the slag formers applied in a kind of refining production.
Background technique
Ladle refining furnace is for first furnace（Electric arc furnaces, open hearth, converter）Institute's molten steel water is refined, and is adjustable
Liquid steel temperature, technique buffering, meets the important metallurgical equipment of continuous casting, tandem rolling.
The existing technological process of production of iron and steel enterprise:Combined blown converter → argon station → refining furnace → conticaster.Wherein converter tapping
When, kinetic energy is stirred when using tapping, suitable lime is added and carries out wash heat pre-manufactured reducing slag, guarantees basicity, prevents rephosphorization from returning silicon;
Tapping process whole process is soft to stir evenly ingredient and temperature.External refining link at this stage exists synthesis slag charge to simplify technique
It is added in ladle before tapping or in tapping process, to reach the purpose of pre-melted refining slag, mainly utilizes CaO-SiO2- at this time
The deoxidation of the characteristics of Al2O3 slag system, desulfurization and dross inclusion adsorption.But such operation needs to refine to lead all using lime slag making
Lime unit consumption is caused to increase, process cost.
Summary of the invention
The purpose of the present invention is to provide the slag formers applied in a kind of refining production, can satisfy the need of refining slag making
It asks, guarantees continuous casting billet quality, reduce slag charge consumption, lime price is far below in price, achievees the purpose that cost efficiency.
The object of the present invention is achieved like this, a kind of to refine the slag former applied in production, and the slag former is each main
The mass percentage content of ingredient is as follows：CaO 42-55%,SiO2 10.5-12.1%,MgO 6.5-11.5%,Al2O3 1.12-
3.25%, the granularity of the slag former is 5-25mm, and slag former described in converter use replaces mass percent 20 in tapping process
~30% lime is added in ladle.
Part lime can be replaced to carry out slag making using improved slag former by the utility model design, meet refining furnace slag making
Technique basicity, slag system demand, slab performance, quality are normal, have achieved the purpose that substitute lime；Improved slag former ingredient simultaneously
It is stable, cheap, achieve the purpose that reduce slag charge cost.
The present invention：1. the slag former of new design carries out heat bored, magnetic separation processing using vessel slag, according to it is above return slag at
Divide it is found that fusing directly increasing in ladle is added 50% in iron content in the pre-slag and splash slag that converter steelmaking process generates
Add molten steel amount；Contain the lime little particle that do not melt completely in discovery recycling slag in sampling process.Such general table of little particle
Face part has been melted but inside is still lime ingredient, and recycling use can reduce the consumption of refining furnace slag charge.
2. converter is added in ladle using improved slag former instead of 20~30% lime in tapping process, converter is utilized
The improved slag former ingredient of slag forms CaO-SiO2-Al2O3-MgO slag system, this slag system comparison CaO-SiO2-Al2O3 slag system has
The ability of stronger deoxidation, desulfurization and dross inclusion adsorption.Simultaneously because the presence of ladle MgO, resistance to the ladle of magnesia carbon brick class
Material has certain protective effect, reduces erosion of the CaF2 to ladle.Analysis is carried out to refining process slag specimen and finds slag specimen spy
Property is consistent substantially, meets the needs of refining process.Refining slag sample ingredient such as 1 institute of table after the slag former test of new design
Show.
Improvement effect：
1. it is high to solve the problems, such as that refining furnace slag charge consumes, refining procedure cost is reduced；
2. the slag former using new design refines slag making stable operation, the indexs such as casting blank foreign matter, mechanical property are normal.
3. the slag former of new design is recycled from vessel slag, the purpose of the circulation of solid waste recycling is played,
Reduce pollution of the solid waste to environment.
Specific embodiment
A kind of to refine the slag former applied in production, the mass percentage content of each main component of slag former is as follows：
The granularity of CaO 42-55%, SiO2 10.5-12.1%, MgO 6.5-11.5%, Al2O3 1.12-3.25%, the slag former is
5-25mm, slag former described in converter use replaces the lime of mass percent 20~30% to be added in ladle i.e. in tapping process
It can.
Claims (1)
1. the slag former applied in a kind of refining production, it is characterised in that：The mass percent of each main component of slag former
Content is as follows：CaO 42-55%,SiO2 10.5-12.1%、MgO 6.5-11.5%、Al2O31.12-3.25%, the slag former
Granularity be 5-25mm, slag former described in converter use replaces the lime of mass percent 20~30% to be added in tapping process
In ladle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734687.XA CN108893575A (en) | 2018-07-06 | 2018-07-06 | It is a kind of to refine the slag former applied in production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734687.XA CN108893575A (en) | 2018-07-06 | 2018-07-06 | It is a kind of to refine the slag former applied in production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108893575A true CN108893575A (en) | 2018-11-27 |
Family
ID=64347985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810734687.XA Pending CN108893575A (en) | 2018-07-06 | 2018-07-06 | It is a kind of to refine the slag former applied in production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108893575A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593036A (en) * | 2020-11-30 | 2021-04-02 | 江苏联峰能源装备有限公司 | Low-silicon microalloyed high-temperature carburized gear steel and manufacturing method thereof |
| CN114517246A (en) * | 2022-03-21 | 2022-05-20 | 新疆八一钢铁股份有限公司 | Pre-melted slag for steel-making refining process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544661A (en) * | 2003-11-21 | 2004-11-10 | 武汉启元经济发展有限责任公司 | Refining agent for making steel |
| CN101736114A (en) * | 2008-11-19 | 2010-06-16 | 攀钢集团研究院有限公司 | Composition for slag formation and preparation and use method thereof |
-
2018
- 2018-07-06 CN CN201810734687.XA patent/CN108893575A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544661A (en) * | 2003-11-21 | 2004-11-10 | 武汉启元经济发展有限责任公司 | Refining agent for making steel |
| CN101736114A (en) * | 2008-11-19 | 2010-06-16 | 攀钢集团研究院有限公司 | Composition for slag formation and preparation and use method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593036A (en) * | 2020-11-30 | 2021-04-02 | 江苏联峰能源装备有限公司 | Low-silicon microalloyed high-temperature carburized gear steel and manufacturing method thereof |
| CN114517246A (en) * | 2022-03-21 | 2022-05-20 | 新疆八一钢铁股份有限公司 | Pre-melted slag for steel-making refining process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102002556B (en) | Rare earth oxide-containing steelmaking refining slag, and preparation method and using method thereof | |
| CN102071279B (en) | Slag washing material for converter process production aluminum killed steel and preparation method thereof | |
| CN100469898C (en) | Alkaline oxygen converter steelmaking slagging fluxing agent and its preparing method and slagging method | |
| CN102586543B (en) | Steel ladle slag reducing agent with high calcium oxide content, and preparation method thereof | |
| CN109338027A (en) | A kind of coverter pig pre-melted type compound slagging agent and preparation method thereof | |
| CN102268513A (en) | Method for improving castability of molten steel of medium and low carbon steel | |
| CN103642965A (en) | Silicon-based desulfurization slag-adjusting agent for vanadium and titanium containing molten iron and preparation method and desulfurization slag-adjusting method thereof | |
| CN103361468A (en) | Treatment method for continuous casting of thermal steel slag | |
| CN108085448A (en) | A kind of production method by continuous casting pattern smelting low-sulfur steel in converter directly | |
| CN103014241A (en) | Control method of smelting slag of SPHD steel for LF (Ladle Furnace) furnace | |
| CN108893575A (en) | It is a kind of to refine the slag former applied in production | |
| CN105177217B (en) | A kind of technique for reducing the converter smelting slag quantity of slag | |
| CN102041355A (en) | Ladle slag modifier for stainless steel refining process | |
| CN102994688B (en) | Pretreatment technology of terminal steel slag in converter | |
| CN103642991B (en) | A kind of Ultra-low aluminum steel refining pre-melted slag and preparation method and using method | |
| CN101613786B (en) | Boron-containing modifier for ladle covering slag and use method thereof | |
| WO2008009178A1 (en) | Dephosphorization method in the process of smelting ni-cr pig iron from a nickel oxide ore | |
| CN108118114A (en) | A kind of electroslag remelting slag and method of smelting suitable for mild steel material | |
| CN101545027A (en) | Low-carbon quick melting ladle refining slag | |
| CN104046882B (en) | The method that magnesia-calcium brick smelts austenitic stainless steel is discarded in a kind of AOD of utilization converter | |
| CN103643094A (en) | Smelting method of high-carbon ferromanganese | |
| CN116694865A (en) | Refining slag suitable for silicon-killed steel ladle desulfurization and use method thereof | |
| CN101550465A (en) | Manganese-based fluxing agent for converter steelmaking and preparation method thereof | |
| CN110157860A (en) | Refining slag for purification and dealumination of ferrosilicon and preparation method thereof | |
| CN115572783A (en) | Barium-containing composite nodulizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |