CN101314803A - Calloy deoxidizing agent for steel-smelting - Google Patents
Calloy deoxidizing agent for steel-smelting Download PDFInfo
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- CN101314803A CN101314803A CNA2008100111545A CN200810011154A CN101314803A CN 101314803 A CN101314803 A CN 101314803A CN A2008100111545 A CNA2008100111545 A CN A2008100111545A CN 200810011154 A CN200810011154 A CN 200810011154A CN 101314803 A CN101314803 A CN 101314803A
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- calcium
- calloy
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Abstract
The invention relates to a calcium-aluminum alloy desoxidant used for steel-making, which takes calcium as a main element, takes aluminum as an auxiliary element, and also can contain one or two of manganese, magnesium, etc. The desoxidant used for steel-making has strong deoxidizing capacity, the use is simple and convenient when being used for steel-making and deoxidation, the putting-in is fast, and the tapping time is shortened. In addition, the components and the forms of occluded foreignsubstances in the steel can be changed, and the mechanical property of the steel is enhanced. The deoxidation products have low melting point and fast upward float, and are easy to be removed at the same time, thereby purifying the molten steel. The quality of the steel is increased, and the better economic benefit is realized at the same time.
Description
Technical field
The present invention is the calloy that is used to make steel, and it is to be that main aluminium is the reductor of assisting with calcium.
Background technology
Process for making all is to make reductor with aluminium and aluminum based composite alloy at present.In the deoxidation in steel making process, produce secondary oxidation, form Al
2O
3Inclusion, it not only influences the quality of steel, also can cause nozzle clogging.The present invention's development is that main aluminium is that the calloy of assisting is made steel making deoxidant with calcium for this reason.
Summary of the invention
The purpose of this invention is to provide that a kind of to be used to make steel with calcium be that main aluminium is the calloy reductor of assisting, in the deoxidation in steel making process, reduce Al
2O
3Be mingled with, deoxidation products can float from molten steel rapidly and get rid of again, and the The amount of inclusions in the steel is reduced, and becomes nodularization, improves the quality of steel, the reduction steel-making cost.
Steel-making calloy reductor of the present invention, calcium and aluminum ratio are equal to and greater than 1 (Ca/Al 〉=1), are smelt alloy by this proportioning.Deoxidant element is based on calcium, and its deoxidation products is not Al
2O
3, but low-melting mCaO.nAl
2O
3, can from molten steel, discharge rapidly.Because the effect of calcium makes steel inclusion change form (nodularization), reduces quantity.After calcium and aluminium formed alloy, the fusing point of calcium improved, and vapor pressure lowering can directly use in steel-making.After calcium and aluminium were smelt alloy in this ratio, according to the deoxidation principle, calcium was the promotor of aluminium deoxidation, strengthens its deoxidizing capacity.In order to increase the proportion (〉=3g/cm of calloy
3) and fusing point (〉=1000 ℃), prolong calloy in the residence time of molten steel, can also in calloy, add 5-70% (quality %) manganese or manganeseirom, increase the proportion of alloy, also increase the manganese in the steel alloying simultaneously, manganese is again deoxidant element.Be deoxidizing capacity that further improves this alloy and the fusing point that reduces deoxidation products, can also add the magnesium of 1-15% (quality %).
The preparation method of steel-making calloy reductor
Fig. 1: calloy schematic diagram of fabrication technology
Fig. 2, Fig. 3: calcium Al-Mg-Mn (iron) alloy synoptic diagram
Below by specific embodiment explanation the present invention.
Embodiment 1:
The calloy reductor.
Proportioning raw materials: calcium ingot 60kg, aluminium ingot 40kg, calcium and aluminium go into the low frequency furnace fusing simultaneously, cast the square of 30 * 40 * 70mm.Chemical examination alloy ingredient (quality %): Ca58.91%, Al39.62%, total impurities (S, P) 0.04%, surplus are Fe (Work tool is brought into).
Certain steel mill produces the SS400 steel 200 tons of converters, makes final deoxygenation ton steel adding 1.2kg with this product, makes that inclusion in the steel of 75% heat is compound spherical.Because the nodularization of steel inclusion and the minimizing of amount must be improved the mechanical property of steel, especially significantly improve impelling strength, plasticity and the hot workability of steel.
Embodiment 2:
The calcium aluminum-magnesium alloy deoxidizer.
Proportioning raw materials: calcium ingot 55kg, aluminium ingot 40kg, magnesium 5kg.
Proportioning drops in the low-frequency furnace simultaneously and melts ingot casting in proportion.Chemical examination alloy ingredient (quality %): Ca 54.76%, and Al 39.23%, and Mg 4.89%, impurity (S, P) summation 0.02%, and Fe is a surplus.
Said two products proportion 2-2.5g/cm
3, utilization ratio lower (about 30%), but raw material fire consumption little (1%) during alloying.
Embodiment 3:
Calcium aluminum-manganese-iron alloy reductor.
Proportioning raw materials: calcium ingot 40kg, aluminium 30kg, mid-carbon fe-mn (Mn80%) 30kg.Proportioning is smelted into the calcium aluminium intermediate alloy with calcium aluminium earlier in low-frequency furnace in proportion.Use main frequency furnace melting ferromanganese again, wait to melt the back and add the calcium aluminium intermediate alloy, the ingot casting of all coming out of the stove after the fusing.Through chemically examining this alloy ingredient (quality %): Ca 37.2%, Al 29.73%, Mn 23.91%.Impurity: C 0.11%, S 0.01%, P 0.01%, Si 0.83%, surplus is Fe.Proportion is 3.6g/cm
3
Certain steel mill in use because the suitable alloy utilization ratio of proportion reaches 41%.
Embodiment 4:
Calcium Al-Mg-Mn alloy reductor.
Proportioning raw materials: calcium ingot 25kg, aluminium ingot 10kg, magnesium ingot 5kg, electrolytic manganese sheet 60kg.In main frequency furnace, melt the manganese sheet earlier, wait to melt the back and drop into aluminium, drop into calcium and magnesium again, the ingot casting of coming out of the stove behind the chemical combination after aluminium is molten.Through chemical examination (quality %): Ca 23.16%, Al8.81%, Mg 3.35%, Mn59.34%.Impurity: S 0.01%, P 0.02%, surplus is Fe.
Certain steel mill produces the 20Mn steel 200 tons of converters, and is former in aluminium ferromanganese (Al
45Mn
10) deoxidation, every stove adds 1000kg, ton steel 5kg.With this alloy final deoxygenation and alloying of manganese, every stove adds 400kg, and ton steel 2kg adds ferromanganese (Mn80%) 300kg less, contains manganese 1.1% in the steel, and the quality of steel reaches the GB requirement.
Claims (2)
1, be used to the calloy reductor of making steel, it is characterized in that: with calcium is that main aluminium is auxilliary, is smelt calloy, its content (quality %) Ca15-70%, Al 10-50% by the proportioning of (quality %) Ca/Al 〉=1.
2, according to also containing (quality %) in the steel-making calloy reductor described in the claim 1: a kind of in Mg 1-15% and the Mn 5-70% element or two kinds, surplus is Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100111545A CN101314803B (en) | 2008-04-23 | 2008-04-23 | Calloy deoxidizing agent for steel-smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100111545A CN101314803B (en) | 2008-04-23 | 2008-04-23 | Calloy deoxidizing agent for steel-smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101314803A true CN101314803A (en) | 2008-12-03 |
| CN101314803B CN101314803B (en) | 2012-01-11 |
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ID=40105948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100111545A Expired - Fee Related CN101314803B (en) | 2008-04-23 | 2008-04-23 | Calloy deoxidizing agent for steel-smelting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041357A (en) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | Novel method for making white slag with LF (ladle furnace) refining furnace |
| CN102643953A (en) * | 2012-04-28 | 2012-08-22 | 常州市茂盛特合金制品有限公司 | Compressing double deoxidizer for steelmaking and preparation method thereof |
| EP2692883A2 (en) * | 2011-03-30 | 2014-02-05 | Korea Institute of Industrial Technology | Mg-al-ca-based master alloy for mg alloys, and a production method therefor |
| CN110016536A (en) * | 2019-05-09 | 2019-07-16 | 湛江申翰科技实业有限公司 | A kind of preparation method of high calloy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956009A (en) * | 1988-08-17 | 1990-09-11 | Reactive Metals And Alloys Corporation | Calcium alloy steel additive and method thereof |
| CN1027144C (en) * | 1993-04-06 | 1994-12-28 | 国营八一二厂江南分厂 | Production process of calcium-aluminum drainage ring |
| CN100478455C (en) * | 2007-07-16 | 2009-04-15 | 郭庆成 | High-calcium non-silicon aluminium calcium magnesium ferrous alloy for steel-smelting deoxidization and method for preparing the same |
-
2008
- 2008-04-23 CN CN2008100111545A patent/CN101314803B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041357A (en) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | Novel method for making white slag with LF (ladle furnace) refining furnace |
| EP2692883A2 (en) * | 2011-03-30 | 2014-02-05 | Korea Institute of Industrial Technology | Mg-al-ca-based master alloy for mg alloys, and a production method therefor |
| EP2692883A4 (en) * | 2011-03-30 | 2014-11-19 | Korea Ind Tech Inst | Mg-al-ca-based master alloy for mg alloys, and a production method therefor |
| CN102643953A (en) * | 2012-04-28 | 2012-08-22 | 常州市茂盛特合金制品有限公司 | Compressing double deoxidizer for steelmaking and preparation method thereof |
| CN110016536A (en) * | 2019-05-09 | 2019-07-16 | 湛江申翰科技实业有限公司 | A kind of preparation method of high calloy |
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| Publication number | Publication date |
|---|---|
| CN101314803B (en) | 2012-01-11 |
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Granted publication date: 20120111 Termination date: 20130423 |