CN102747190A - Deoxygenation modifier for molten steel - Google Patents
Deoxygenation modifier for molten steel Download PDFInfo
- Publication number
- CN102747190A CN102747190A CN2012102694037A CN201210269403A CN102747190A CN 102747190 A CN102747190 A CN 102747190A CN 2012102694037 A CN2012102694037 A CN 2012102694037A CN 201210269403 A CN201210269403 A CN 201210269403A CN 102747190 A CN102747190 A CN 102747190A
- Authority
- CN
- China
- Prior art keywords
- molten steel
- deoxygenation
- caco
- modification agent
- weight percentage
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a deoxygenation modifier for molten steel. The deoxygenation modifier comprises by weight: 25-42% of Al2O3, 48-65% of Al, 10% of mixture formed by CaCO3, Na2CO3 and BaCO3, and the balance of 0-2.0% of C, 0-2.5% of SiO2, 0-0.03% of P and 0-0.05% of S, wherein the proportion of CaCO3 is not less than 60% in the mixture according to the weight percentage. According to the deoxygenation modifier for the molten steel provided by the invention, Al2O3 and Al are mainly used for deoxygenating and modifying the molten steel and slag of the molten steel so as to improve cleanliness of the molten steel; the mixture formed by CaCO3, Na2CO3 and BaCO3 can quickly generate useful gas and tiny dispersion particles in the molten steel, the molten steel is promoted to be deoxygenated quickly, meanwhile, the deoxygenated product can quickly float and be absorbed, and is interacted with Al2O3, Al and the balance of elements, and the comprehensive performance of the molten steel is adjusted, so that the deoxygenation capacity of the deoxygenation modifier for the molten steel is greatly improved, and the oxygen in about 1.7 ppm/t of molten steel can be removed by each 1 kg/t of the deoxygenation modifier for the molten steel in practice. According to the deoxygenation modifier for the molten steel, the impurity content in the molten steel is reduced, the steel is purified, the casting performance of the molten steel is improved, and the water gap blockage phenomenon cannot happen in practice when the number of continuous casting furnaces is more than 18.
Description
Technical field
The present invention relates to a kind of molten steel refining agent, particularly a kind of deoxidation modification agent of molten steel that can be used for carrying out deoxidation modification to deoxidation of molten steel, to slag.
Background technology
In the STEELMAKING PRODUCTION, obtain high-quality steel, oxygen level that must strict control molten steel in steelmaking process be mingled with.
Along with social production to steel quality require increasingly high, therefore need a kind of can be in steelmaking process the oxygen level in the better controlled molten steel with remove the deoxidation modification agent of molten steel that is mingled with in the molten steel.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of deoxidation modification agent of molten steel, the high-quality oxygen that removes in the molten steel of its ability; And slag that molten steel is with carried out deoxidation and upgrading, and promote the removal effect that molten steel is mingled with, reduce in the molten steel and be mingled with content; Purify steel, improve the molten steel cleanliness factor; Improve watering property of molten steel, assurance is watered many stoves continuously and the water blocking mouthh phenomenon is not taken place.
Deoxidation modification agent of molten steel of the present invention comprises by weight percentage: 25～42%Al
2O
3, 48～65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3The mixture of forming, surplus is 0～2.0%C, 0～2.5%SiO
2, 0～0.03%P and 0～0.05%S, CaCO by weight percentage in the said mixture
3Ratio>=60%.
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 25%Al
2O
3, 65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 60%;
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 30%Al
2O
3, 60%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 65%;
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 35%Al
2O
3, 55%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 70%;
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 42%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 75%;
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 40%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 80%, surplus is 0.92%C, 1%SiO
2, 0.03%P and 0.05%S;
Further, said deoxidation modification agent of molten steel by weight percentage, comprises 32%Al
2O
3, 56%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 85%, surplus is 0.55%C, 1.4%SiO
2, 0.02%P and 0.03%S.
Beneficial effect of the present invention: deoxidation modification agent of molten steel of the present invention, Al wherein
2O
3Be mainly used in AL the molten steel and the slag of being with thereof are carried out deoxidation and upgrading, promote the cleanliness factor of molten steel; By CaCO
3, NaCO
3And BaCO
3The mixture of forming can produce valuable gases and fine discrete particles fast in molten steel, impel the quick deoxidation of molten steel, also is beneficial to the floating upward quickly absorption of deoxidation products simultaneously, and and Al
2O
3Interact with AL and all the other elements, regulate the over-all properties of molten steel.Owing to added by CaCO
3, NaCO
3And BaCO
3The mixture of forming improves the deoxidizing capacity of this deoxidation modification agent of molten steel greatly, and every 1kg/t deoxidation modification agent of molten steel can remove the oxygen in about 1.7ppm/t molten steel in the practice; This deoxidation modification agent of molten steel can carry out deoxidation and upgrading to slag that molten steel is with, and promotes the removal effect that molten steel is mingled with, and reduces in the molten steel to be mingled with content, purifies steel, improves the molten steel cleanliness factor; Improve watering property of molten steel, the water blocking mouthh phenomenon does not take place more than can the company of assurance in the practice watering several 18 stoves of stove.
Embodiment
Deoxidation modification agent of molten steel of the present invention comprises by weight percentage: 25～42%Al
2O
3, 48～65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3The mixture of forming, surplus is 0～2.0%C, 0～2.5%SiO
2, 0～0.03%P and 0～0.05%S, CaCO by weight percentage in the said mixture
3Ratio>=60%.
The component of in giving proportional range, getting above-mentioned corresponding proportion mixes, and briquetting can obtain this deoxidation modification agent of molten steel.Al in this deoxidation modification agent of molten steel
2O
3Be mainly used in AL the molten steel and the slag of being with thereof are carried out deoxidation and upgrading, promote the cleanliness factor of molten steel; By CaCO
3, NaCO
3And BaCO
3The mixture of forming can produce valuable gases and fine discrete particles fast in molten steel, impel the quick deoxidation of molten steel, also is beneficial to the floating upward quickly absorption of deoxidation products simultaneously, and ability and Al
2O
3, AL and excess matter thereof interacts, and regulates the over-all properties of molten steel.
Specific embodiment one: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 25%Al
2O
3, 65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 60%, each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 23.2ppm and 8.55ppm respectively, and desulfurization degree exceed 5.74% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Specific embodiment two: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 30%Al
2O
3, 60%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 65%; Each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 18.4ppm and 4.85ppm respectively, and desulfurization degree exceed 6.65% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Specific embodiment three: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 35%Al
2O
3, 55%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 70%; Each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 8.44ppm and 2.6ppm respectively, and desulfurization degree exceed 11.95% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Specific embodiment four: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 42%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 75%; Each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 12.2ppm and 2.35ppm respectively, and desulfurization degree exceed 10.1% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Specific embodiment five: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 40%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 80%, surplus is 0.92%C, 1%SiO
2, 0.03%P and 0.05%S; Each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 9.35ppm and 2.95ppm respectively, and desulfurization degree exceed 12.25% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Specific embodiment six: the present embodiment deoxidation modification agent of molten steel by weight percentage, comprises 32%Al
2O
3, 56%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 85%, surplus is 0.55%C, 1.4%SiO
2, 0.02%P and 0.03%S; Each component materials is mixed briquetting.
Following table is under the essentially identical situation of various smelting control conditions, the present embodiment deoxidation modification agent of molten steel in practical implementation with the comparative data of common molten steel refining agent:
Can know by last table, use before the average argon of deoxidation modification agent of molten steel heat behind [O] and argon [O] to compare and reduced 8.8ppm and 4.3ppm respectively, and desulfurization degree exceed 7.76% with the heat of the common refining agent of use.The deoxidizing capacity of proof deoxidation modification agent of molten steel is superior to previous auxiliary material.Use behind the deoxidation modification agent of molten steel in the molten steel slag (FeO+MnO) average content all low than the heat big working condition under, explain that this deoxidation modification agent of molten steel of use can make the raising of ladle top slag affinability, promptly upgrading is effective.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. a deoxidation modification agent of molten steel is characterized in that: comprise by weight percentage: 25～42%Al
2O
3, 48～65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3The mixture of forming, surplus is 0～2.0%C, 0～2.5%SiO
2, 0～0.03%P and 0～0.05%S, CaCO by weight percentage in the said mixture
3Ratio>=60%.
2. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 25%Al
2O
3, 65%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 60%.
3. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 30%Al
2O
3, 60%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 65%.
4. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 35%Al
2O
3, 55%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 70%.
5. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 42%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 75%.
6. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 40%Al
2O
3, 48%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 80%, surplus is 0.92%C, 1%SiO
2, 0.03%P and 0.05%S.
7. deoxidation modification agent of molten steel according to claim 1 is characterized in that: by weight percentage, comprise 32%Al
2O
3, 56%Al and 10% is by CaCO
3, Na2CO3 and BaCO
3Composition mixture, CaCO by weight percentage in the said mixture
3Ratio be 85%, surplus is 0.55%C, 1.4%SiO
2, 0.02%P and 0.03%S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102694037A CN102747190A (en) | 2012-07-30 | 2012-07-30 | Deoxygenation modifier for molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102694037A CN102747190A (en) | 2012-07-30 | 2012-07-30 | Deoxygenation modifier for molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102747190A true CN102747190A (en) | 2012-10-24 |
Family
ID=47027677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102694037A Pending CN102747190A (en) | 2012-07-30 | 2012-07-30 | Deoxygenation modifier for molten steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102747190A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950826A (en) * | 2016-05-05 | 2016-09-21 | 首钢京唐钢铁联合有限责任公司 | Deoxidizing agent for refining slag of ladle refining furnace and use method thereof |
| CN106119462A (en) * | 2016-08-09 | 2016-11-16 | 安徽省无为县科力耐火炉料有限公司 | A kind of Al base ladle top slag modifier and the method improving its utilization rate |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
| CN113136480A (en) * | 2021-04-22 | 2021-07-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Ladle slag modifier and preparation and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294199A (en) * | 1999-11-02 | 2001-05-09 | 北京科技大学 | Technology for desulfurizing molten steel in enclosed ladle by spraying powder |
| CN102146494A (en) * | 2010-02-05 | 2011-08-10 | 鞍钢股份有限公司 | Production method of fine oxide dispersion steel |
| CN102181605A (en) * | 2011-04-07 | 2011-09-14 | 重庆钢铁(集团)有限责任公司 | Molten steel deoxidizing modifier |
-
2012
- 2012-07-30 CN CN2012102694037A patent/CN102747190A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294199A (en) * | 1999-11-02 | 2001-05-09 | 北京科技大学 | Technology for desulfurizing molten steel in enclosed ladle by spraying powder |
| CN102146494A (en) * | 2010-02-05 | 2011-08-10 | 鞍钢股份有限公司 | Production method of fine oxide dispersion steel |
| CN102181605A (en) * | 2011-04-07 | 2011-09-14 | 重庆钢铁(集团)有限责任公司 | Molten steel deoxidizing modifier |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950826A (en) * | 2016-05-05 | 2016-09-21 | 首钢京唐钢铁联合有限责任公司 | Deoxidizing agent for refining slag of ladle refining furnace and use method thereof |
| CN106119462A (en) * | 2016-08-09 | 2016-11-16 | 安徽省无为县科力耐火炉料有限公司 | A kind of Al base ladle top slag modifier and the method improving its utilization rate |
| CN106119462B (en) * | 2016-08-09 | 2018-12-14 | 安徽省无为县科力耐火炉料有限公司 | A kind of Al base ladle top slag modifier and the method for improving its utilization rate |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
| CN113136480A (en) * | 2021-04-22 | 2021-07-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Ladle slag modifier and preparation and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106609313B (en) | A kind of high-purity rare earth steel processing method | |
| CN105018814B (en) | Tungsten-molybdenum alloy and preparation method thereof | |
| CN102747190A (en) | Deoxygenation modifier for molten steel | |
| CN110804685A (en) | Slag washing and refining process for tapping of converter | |
| CN107541582B (en) | A kind of non-oriented electrical steel calcium treating method of excellent magnetic | |
| CN105642849A (en) | Crystallizer casting powder for continuous casting of titanium-containing steel | |
| CN108213365A (en) | A kind of non-reacted covering slag of high-aluminum steel | |
| CN104404355A (en) | Smelting process for anti-knock mild steel medium-thickness slab | |
| CN102304624A (en) | Remelting slag for electroslag remelting plate blank and manufacturing method thereof | |
| CN101935740A (en) | White slag refining agent for LF (Ladle Furnace) refining furnace and preparation method thereof | |
| CN112813228A (en) | Multifunctional premelting slag refining agent for steelmaking and preparation method thereof | |
| CN1955317A (en) | Aluminium compound deoxider | |
| CN102605143A (en) | Aluminum-magnesium-calcium alloy and application thereof in controlling stainless steel impurities | |
| CN106493321A (en) | Steel-making tundish covering flux and preparation method thereof | |
| CN101787452A (en) | Preparation method of aluminum-calcium alloy used for vacuum refining molten steel deoxidation and device thereof | |
| CN101497934B (en) | Heating slag washing material for converter steel melting, preparation and use method thereof | |
| CN107586912B (en) | A kind of V2O5The method of direct Reducing and Alloying | |
| CN102876840A (en) | Steelmaking siliceous premelting composite deoxidation and desulfurization agent and preparation method thereof | |
| CN108715972A (en) | A kind of low-phosphorous silicon iron product and its smelting process | |
| CN106337101A (en) | Calcium series top slag modification agent and application method thereof | |
| CN104404176A (en) | Recycling method of refining white slag | |
| CN110004269B (en) | Production method of aluminum-free medium-high carbon steel | |
| CN102102138B (en) | Method for solving copper segregation in steel | |
| CN100507021C (en) | LF composite deoxidization reducer | |
| CN107955860A (en) | One kind contains K2The LF stove refining slags of O |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121024 |