CN104946849B - Multielement aluminum-iron alloy deoxidizer and preparation method thereof - Google Patents
Multielement aluminum-iron alloy deoxidizer and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a multielement aluminum-iron alloy deoxidizer and a preparation method thereof, belonging to the technical field of smelting. The multielement aluminum-iron alloy deoxidizer is composed of the following chemical components in percentage by mass: 30.0-35.0% of Al, less than 0.35% of C, 15.0-18.0% of Si, 4.0-6.0% of Mn, 3.0-3.5% of Ca, 4.0-4.5% of Ba, 3.5-3.8% of Mg, 0.5-0.8% of RE, 1.2-1.5% of Zn, less than 0.02% of S, less than 0.03% of P and the balance of Fe. The deoxidizer adopts a crucible melt resistance furnace and an induction furnace to simultaneously perform smelting, and is injected into one casting ladle and cast into a cast iron mold to obtain the aluminum-iron alloy deoxidizer block material. The multielement aluminum-iron alloy deoxidizer has excellent deoxidizing effect.
Description
Technical field
The present invention for a kind of deoxidizer in steel production and preparation method thereof, more particularly to a kind of polybasic aluminum ferroalloy deoxidant and its
Preparation method, belongs to technical field of smelting.
Background technology
Steel is smelting latter stage, after chemical composition is qualified, before tapping, it is necessary to which adding deoxidier is carried out in smelting process
Deoxidation, reduces the fragility of steel, improves the plasticity and obdurability of steel.Traditional method is as deoxidier with aluminium.The density of aluminium is low,
Easily floated in addition steel liquation, deoxidation effect is poor.The density of ferro-aluminum deoxidier is high, low cost, deoxidation effect are good, thus by
Step instead of traditional aluminium deoxidizer.Deoxidier is a kind of auxiliary furnace charge that must be added to during process for making.Current deoxidation
Agent species is various, and most classic is fine aluminium, in addition with ferrosilicon, ferromanganese, silico-calcium and ferro-silico aluminium etc..The final deoxidizing of tapping phase is more
Number or insertion fine aluminium or input ferro-silico aluminium.Current complex deoxidization is a kind of developments.In order to improve deoxygenation of liquid steel effect, in
State patent of invention CN1394967 discloses a kind of pure aluminium iron compound deoxidant and its production technology, and it includes following weight proportion
Component aluminium 30-70%, iron 70-30%.Its production craft step is：(1) useization aluminium stove technology, first melts raffinal
Change；(2) aluminum solutions after fusing are cast to circular cone shape or trapezoidal mesa-shaped or triangle mesa-shaped die for molding, are continued to mould
Tool heating, is allowed in liquid；(3) the rapid pure iron grain or iron bar for being proportionally added into preheating；(4) slight vibration mould, makes iron
Grain or iron bar are evenly dispersed in after solidifying in aluminium liquid and form ferro-aluminum composition, product proportion is reached 2.8g/cm3~
6.8g/cm3.Chinese invention patent CN1434134 also discloses the alfer and its preparation side for making steel molten steel final deoxidizing
Method, is related to make steel the deoxidier of molten steel final deoxidizing, especially deoxidier of aluminum killed steel molten steel final deoxidizing and preparation method thereof.Aluminium
The weight percent composition of ferroalloy is aluminium 40-44%, iron 54-59% and a small amount of impurity.Preparation method be get the raw materials ready, dispensing, melting,
Casting and cooling control.Wherein melting includes iron and steel stock fusing, oxidizer decarburization, desiliconization, dephosphorization, plus desulfurizing agent desulfurization,
Plus reducing agent deoxidation and reduction, with slag former slag making, plus aluminium melting, stirring, slagging-off, temperature control are come out of the stove 8 steps.The invention is standby
Various raw metals are first preheated entering stokehold during material, dephosphorization, desulfurized step and temperature control is increased in fusion process and is come out of the stove step
Suddenly, the alfer for melting out has that objectionable impurities is few, deoxidizing capacity by force with being not pulverized easily the characteristics of, the efflorescence phase is more than 6 months,
Steel-making especially aluminum killed steel final deoxidizing can be widely used in.Chinese invention patent CN1442492 also discloses a kind of manganese aluminium and is combined
Deoxidier, is a kind of manganese aluminium composite deoxidant for making steel molten steel final deoxidizing.Its specific composition and weight percent content
For：Aluminium 2-19%, manganese 36-59%, balance of iron and other materials, the carbon in described other materials are≤3%, silicon≤
20%, phosphorus≤1%, sulphur≤1%.The invention is big with the affinity of oxygen, and deoxidizing capacity is strong.Deoxidation products is not fused to molten steel and is easy to
Exclude, even if also very small to the performance hazards of steel when being stranded in steel in the form of field trash, have refinement brilliant to some steel grades
The effect of grain.The content of other impurity in steel can also be reduced in addition to deoxidation or weakens its adverse effect.Chinese invention patent
CN1456689 also discloses a kind of aluminum-magnesium-iron alloy deoxidant, and the aluminum-magnesium-iron alloy deoxidant includes aluminium, magnesium, ferro element, its
Chemical composition (weight %) is：Al 40~95%, Mg 5~20%, balance of Fe.Compared with prior art, the invention has
Beneficial effect is：After aluminium, magnesium, iron are made into alloy together, can be added directly into molten steel, preparation cost is low and is readily produced,
There is very strong desulphurizing ability again simultaneously, that is, improve steel product quality, economic benefit is improve again.Chinese invention patent
CN1153217 also discloses a kind of production process for Al-Mn-Si compound deoxidizer, is the additive needed for a kind of steelmaking process, its
Feature is that silicomangan, as foundry alloy are smelted into direct current furnace using poor manganese ore, then foundry alloy is put into direct current
Auxiliary material is inserted in ladle furnace：Ferrosilicon, steel scrap, aluminium etc., by refining, obtain final product the Al-Mn-Si compound deoxidizer alleged by the present invention, should
The advantage of invention is：Product is low-phosphorous, composition is appropriate, not efflorescence, using the present invention in steel-making, can reduce steel inclusion total
Amount, and controllable field trash property.Chinese invention patent CN1160087 also discloses a kind of rare-earth-Al-Mn alloy.The alloy
The component of middle each element is（Percentage by weight）∶18~28%Al, 25~35%Mn, 0.1~3.0%Xt, 0.5~1.5%Si, 0.6~
2.0%C, 0.01~0.1%P, 0.001~0.01%S, 0.02~0.5%Cu, 0~3.0%Sb, 26.89~55.769%Fe.The conjunction
Gold is for substituting the effect that fine aluminium is deoxidizer in steel production, and the effect with metallic addition, desulfurization.Can improve improves steel
Inherent quality, compared with fine aluminium deoxidation, in unit amount aluminium phase in the case of, its effect improves nearly by one to the alloy than fine aluminium
Times.Chinese invention patent CN1030096 also discloses a kind of complex deoxidizer for steelmaking, by silicon-three kinds of aluminium-iron metal ingredient
Constitute, ferro-aluminum deoxidier and fine aluminium deoxidier can be replaced, overcome the efflorescence of ferro-aluminum deoxidier and fine aluminium deoxidier, scaling loss is tight
Weight, ferro-aluminum metal structure is unreasonable, the big shortcoming of aluminium consumption, is particularly well-suited to smelt siliceous common killed steel, siliceous low conjunction
Deoxidation in the smelting process of Jin Gang.Chinese invention patent CN1160085 also discloses one kind ore and is directly produced Si-Al-Ba alloy
Ca-Fe alloy（Deoxidizer in steel production, desulfurizing agent, denaturant）Method.Using bauxite, quartz sand, clay, barite, coal, paper
Slurry makees raw material, and pelletizing, drying, are then smelted in mineral hot furnace with 48-52V low-voltage and high-currents and be to obtain composition after dispensing
Al：30±2%、Si：20±2%、ba：5±1%、Ca：1 ± 0.2%, the Si-Al-Ba-Ca ferroalloy of balance of Fe.Invention operation letter
Product composition stabilization that is single, producing, production cost can reduce by 35%, reduce equipment investment nearly two than the two step method of prior art
/ mono-, reduce labour's input 2/5ths.The new side of Chinese invention patent CN1040059 deoxidizer in steel production ferro-silico aluminium production
Method, the invention is deoxidant for steelmaking ferro-silico aluminium（Containing Si20-23%, Al45 ~ 50%）New process for producing.The method is will be used
Raw material adds smelting furnace according to the order and requirement of aluminium-ferrosilicon-pig iron（Graphite crucible or magnesia bath of glass knotting crucible）
It is interior, using fuel without carrying out heating melting using electric power.After whole furnace charges are melting down, it is sufficiently stirred for, temperature reaches 1075-1150
DEG C when, add a certain amount of hardening agent, can be cast for finished product ferro-silico aluminium after 5-10 minutes.Chinese invention patent
CN1052901 is also disclosed and is produced NEW TYPE OF COMPOSITE deoxidant Si-Al-Ba-Fe alloy alloy with alkaline-earth metal, and si-al-ba-fe is a kind of
New double deoxidizer.The alloy is mainly used in deoxidation and the alloying of STEELMAKING PRODUCTION.Using the alloy deoxidation and alloying,
Not only reduction steel inclusion total amount, changes field trash shape, and size and distribution improve the quality of steel, and energy 1:1 replacement
Alsimin, 1:2.1 replacement metallic aluminium, can substantially reduce the usage amount of aluminium, decline the production cost of steel.Chinese invention
Patent CN101555539 also discloses a kind of Al-Ca-Fe complex deoxidizer used for STEELMAKING PRODUCTION and preparation method thereof.Its
Al-Ca-Fe complex deoxidizer chemical composition (weight ratio) is：Agstone 25~35%, aluminium skimmings 35~50%, nail bits 20~
30%, clay powder 0.3~2%, industrial starch 3~8%, liquid soluble glass 4~7%.Its preparation method is：First by above-mentioned original
Agstone, clay powder in material, industrial starch premixing be uniform to be made that powder is standby, then the percentage by above-mentioned raw materials by weight
After than weighing, nail bits and aluminium skimmings are first added into liquid soluble glass, after stirring 2~3 minutes, add the powder by being pre-mixed,
Reached after simpson mill is stirred 3~4 minutes and be sufficiently mixed, be molded, drying, packing.Its advantage is：Deoxidation effect
Good, unstable and continuous casting intermediate inlet wadding stream the problem of the yield of aluminium, purifies the work of molten steel when efficiently solving deoxidation of molten steel
With obvious.Chinese invention patent CN101906509A also discloses a kind of aluminum-calcium-iron deoxidizer used for steel making, and the deoxidier is by gold
The composition of the spherical shape that the pulvis combination such as category aluminium powder, metallic calcium powder and metal iron powder is constituted, the composition of said composition and
Shape after its shape size, and balling-up so that the deoxidier has the following characteristics that：Metallic aluminium powder, metallic calcium powder and metallic iron
Powder suppresses balling-up, preparation method is simple；Product intensity is high, is directly entered steel mill's high hopper and uses；Finished product possesses strong than great
Reducing power, strong to deoxidation of molten steel ability, compared with similar deoxidier, molten steel total oxygen content is low；Deoxidation products mutually builds up length
Greatly, float fast；Inclusion content of steel is reduced, while inclusion modification can be made；Good fluidity when molten steel is cast.Chinese invention is special
Sharp CN102181606A also discloses a kind of rare earth aluminum manganese calcium iron alloy and its production method, the component weight percentages of the alloy
For：Aluminium Al：40~70%, Mn：5~20%, RE：1~10%, Ca：1~3%；Other residual elements weight are not more than 5%, remaining
It is Fe to measure；The RE refer to cerium Ce, lanthanum La or containing at least Ce, La in a kind of mischmetal, in mischmetal
The content of Ce, La is no less than 90%；Described other residual elements refer to carbon, sulphur, phosphorus, the silicon unit being mixed into during alloy smelting
Element.Preparation technology flow is：Sorting dispensing-feed-melt-remove the gred-pour-weigh-finished product storage.Advantage is to realize
The big rare-earth aluminum-manganese calcium iron for easily removing of inclusion particle that deoxidation effect is strong, functional element recovery rate is high, produced in molten steel
Alloy, it is both strong deoxidier, is again the additive of alloy, can be used as intermediate alloy again.Chinese invention patent
CN102181755A also discloses a kind of low calcium aluminum-manganese-iron alloy and preparation method thereof, belongs to deoxidizer in steel production technical field.Should
The component weight percentages of alloy are：Aluminium Al：30~70%, Mn：2~30%, Ca：1~10%；Other residual elements weight are not
More than 4%, balance of Fe；Described other residual elements refer to carbon, sulphur, phosphorus, the element silicon being mixed into during alloy smelting.System
It is for technological process：Sorting dispensing-feed-melt-remove the gred-pour-weigh-finished product storage.Advantage is：Realize deoxidation effect
The big low calcium aluminum-manganese-iron alloy for easily removing of inclusion particle that fruit is strong, functional element recovery rate is high, produced in molten steel, it was both
It is strong deoxidier, is again the additive of alloy, can be used as intermediate alloy again.Chinese invention patent CN101054614 is also public
Al-Mn-Fe composite deoxidizer is opened, it includes aluminium, manganese, iron and inevitable impurity, its weight percent composition is：Aluminium 31~
39%, manganese 1~9%, balance of iron and impurity.The Al-Mn-Fe composite deoxidizer of the invention its proportion is compared with fine aluminium, iron core aluminium and one
The ratio of a little aluminium content deoxidiers high is great, is more conducive to penetrate slag blanket and gos deep into the fusing deoxidation of molten steel inside, while having in deoxidier
The presence of manganese, improves the melting degree of aluminium, enhances deoxidizing capacity, optimizes deoxidation effect；Its fusing point is higher, therefore alloy burns
Damage few, recovery rate is high；Its manganese content is low, cheap, can effectively reduce deoxidation in steel making cost；The low melting point that deoxidation is produced is combined
Deoxidation products is easier to float compared with other deoxidation products, so as to reduce the content of steel inclusion to greatest extent, hence it is evident that improve steel
Inherent quality, and the tendency of nozzle clogging can be reduced in continuous casting.Chinese invention patent CN1693486 also discloses one kind
Complex deoxidizer for steelmaking --- Si-Al-Ba-Ca manganeisen and preparation method thereof, belongs to steelmaking technical field.Described steel-making
It is with the chemical composition (weight %) of double deoxidizer：Si 10~35%, Al 5~15%, Ba 4~14%, Ca 4~
14%, Mn 2~10%, balance of Fe and inevitable impurity.Its preparation method is：Using intermediate frequency furnace or main frequency furnace, one is taken
The steel scrap and 3/2 aluminium ingot of fixed proportioning are put into furnace bottom, then add Si-Ba alloy, calcium-silicon, mid-carbon fe-mn, Antaciron, treat
Remaining aluminium ingot all is added after fusing, is come out of the stove after being sufficiently stirred for, melting, you can the steel-making of chemical composition needed for being obtained is used multiple
Close deoxidier --- Si-Al-Ba-Ca manganeisen.The deoxidier have than great (3.5~4.5g/cm3), fusing point it is low (1050~
1200 DEG C), crystallization is careful, hard, and the double deoxidizer is especially used when low-alloy structural steel and carbon steel is smelted, and can have
Improve the combination property of steel in effect ground.Chinese invention patent CN1900326 also discloses a kind of iron core aluminum-iron composite deoxidizing agent, its
It is characterised by the metal iron core containing 35-45% in the ferro-aluminum blending ingredients being made up of aluminium 85-95%, iron 5-15%.It will
Part iron in existing alfer is subtracted, and is allowed to not fused into aluminium one, and in sandwiching alfer in the way of iron core,
Both the light specific gravity that simple metals aluminium exists as deoxidation had been overcome, it is difficult to sink in molten steel, the deficiency such as deoxidation effect difference, while again
Effectively overcome the fusing point that existing alfer deoxidier is present high, melt that speed is low, smelting cost is high, and oxidizable getting rusty waits deficiency,
The deoxidier of the another present invention can improve its deoxidation effect in molten steel, and the oxide that is formed after deoxidation and the wetability of molten steel
Difference, interfacial tension is big, it is easy to floats up to discharge in slag, compares with fine aluminium, it is possible to decrease the aluminium consumption of 30-50%, improves the inherence of steel
Quality, reduces STEELMAKING PRODUCTION cost.Chinese invention patent CN1928126 also discloses a kind of calcium-aluminium deoxidizer and its preparation side
Method.Raw material is to be fired into the CaO blocks that content is more than 80% and the metallic aluminium that content is more than 90% by lime stone ore, its
Weight is 20-50: 15-35；CaO blocks and metallic aluminium are smelted in intermediate frequency furnace, is passed through after obtaining CaO base solutions
Cooling obtains finished product, and the chemical composition content of its finished product is Ca5-35%, Al5-50%, and its finished product is 3-4: 1 with the density of water.
The invention has strong deoxidization desulfuration performance, and deoxidation products form can be improved in molten steel, generates polynary slag system, it is easy to discharge, clean
Net molten steel, while reducing sprue gate dross degree, improves the performance of steel, improves the plasticity of steel.
But, it is not enough that above-mentioned deoxidizer in steel production also has that deoxidation effect is poor and deoxidier addition is more etc..This hair
The bright problem existed for conventional deoxidizer in steel production, develops a kind of production technology simplicity and the good polynary alfer of deoxidation effect
Deoxidier, i.e., on the basis of common alfer, add the units such as a number of silicon, manganese and a small amount of calcium, barium, magnesium, zinc, rare earth
Element, makes deoxidier have excellent deoxidation effect.
The content of the invention
The chemical composition mass fraction % of deoxidier of the present invention：30.0~35.0Al,<0.35C, 15.0~18.0Si,
4.0~6.0Mn, 3.0~3.5Ca, 4.0~4.5Ba, 3.5~3.8Mg, 0.5~0.8RE, 1.2~1.5Zn, <0.02S, <
0.03P, surplus Fe.
Polybasic aluminum ferroalloy deoxidant of the present invention injects same using Crucible melting resistance furnace and electric induction furnace melting simultaneously
One casting ladle, then pours into polybasic aluminum ferroalloy deoxidant block materials in pig mold, and specific melting and pouring procedure are：
(1) first fusing metal aluminium, magnesium metal and metallic zinc in Crucible melting resistance furnace, metal liquid temperature reaches 720
After~740 DEG C, come out of the stove into casting ladle.(2) ferrosilicon, ferromanganese and Q235 steel scraps Hybrid Heating are melted in electric induction furnace, alloy material
Si-Ba alloy, calcium-silicon and rare earth ferrosilicon alloy are added after material fusing, after stokehold adjusting component is qualified, temperature 1560 is risen to
Come out of the stove after~1580 DEG C, in casting ladle of the implantation step (1) containing aluminium-magnesium-zinc metal liquid, mixed metal liquid stands 2
After~5 minutes, poured into pig mold, that is, obtained polybasic aluminum ferroalloy deoxidant block materials.
The present invention compared with prior art, with advantages below：
1）Polybasic aluminum ferroalloy deoxidant density of the present invention is high, reaches 5.0 ~ 5.5g/cm3, than fine aluminium density (2.7g/cm3)
Greatly, residence time of the deoxidier in molten steel is increased, the scaling loss that alloy floating molten steel surface causes is greatly reduced.2）This hair
Contain strong deoxidant element magnesium, calcium, barium and zinc in bright polybasic aluminum ferroalloy deoxidant, cause its deoxidizing capacity to significantly improve, deoxidation
Rate is more than 87%.3）Contain more magnesium, calcium and appropriate rare earth element in polybasic aluminum ferroalloy deoxidant of the present invention, with excellent
Different desulphurizing ability and the effect for improving inclusion morphology and being distributed.4）Using polybasic aluminum ferroalloy deoxidant of the present invention, can
Deoxidier consumption is reduced, deoxidation of molten steel cost more than 25% is reduced, the tensile strength of cast steel ingot is improved more than 20%,
Impact flexibility improves more than 35%, and popularization and application have good economic and social benefit.
The present invention is further described with reference to embodiments.
Embodiment 1：
Polybasic aluminum ferroalloy deoxidant is noted using 2 tons of Crucible melting resistance furnaces and 3 tons of medium-frequency induction furnace meltings simultaneously
Enter same casting ladle, polybasic aluminum ferroalloy deoxidant block materials, specific melting and pouring procedure are then poured into pig mold
It is：
(1) first fusing metal aluminium, magnesium metal and metallic zinc in Crucible melting resistance furnace, metal liquid temperature reaches 722
After DEG C, come out of the stove into casting ladle.(2) ferrosilicon, ferromanganese and Q235 steel scraps Hybrid Heating are melted in electric induction furnace, alloy material melts
Si-Ba alloy, calcium-silicon and rare earth ferrosilicon alloy are added after change, after stokehold adjusting component is qualified, after temperature is risen into 1577 DEG C
Come out of the stove, in casting ladle of the implantation step (1) containing aluminium-magnesium-zinc metal liquid, after mixed metal liquid stands 3 minutes, by it
Pour into pig mold, that is, obtain polybasic aluminum ferroalloy deoxidant block materials.Its chemical composition is shown in Table 1.
Embodiment 2：
Polybasic aluminum ferroalloy deoxidant is noted using 2 tons of Crucible melting resistance furnaces and 3 tons of medium-frequency induction furnace meltings simultaneously
Enter same casting ladle, polybasic aluminum ferroalloy deoxidant block materials, specific melting and pouring procedure are then poured into pig mold
It is：
(1) first fusing metal aluminium, magnesium metal and metallic zinc in Crucible melting resistance furnace, metal liquid temperature reaches 739
After DEG C, come out of the stove into casting ladle.(2) ferrosilicon, ferromanganese and Q235 steel scraps Hybrid Heating are melted in electric induction furnace, alloy material melts
Si-Ba alloy, calcium-silicon and rare earth ferrosilicon alloy are added after change, after stokehold adjusting component is qualified, after temperature is risen into 1562 DEG C
Come out of the stove, in casting ladle of the implantation step (1) containing aluminium-magnesium-zinc metal liquid, after mixed metal liquid stands 4 minutes, by it
Pour into pig mold, that is, obtain polybasic aluminum ferroalloy deoxidant block materials.Its chemical composition is shown in Table 1.
Embodiment 3：
Polybasic aluminum ferroalloy deoxidant is noted using 2 tons of Crucible melting resistance furnaces and 3 tons of medium-frequency induction furnace meltings simultaneously
Enter same casting ladle, polybasic aluminum ferroalloy deoxidant block materials, specific melting and pouring procedure are then poured into pig mold
It is：
(1) first fusing metal aluminium, magnesium metal and metallic zinc in Crucible melting resistance furnace, metal liquid temperature reaches 731
After DEG C, come out of the stove into casting ladle.(2) ferrosilicon, ferromanganese and Q235 steel scraps Hybrid Heating are melted in electric induction furnace, alloy material melts
Si-Ba alloy, calcium-silicon and rare earth ferrosilicon alloy are added after change, after stokehold adjusting component is qualified, after temperature is risen into 1560 DEG C
Come out of the stove, in casting ladle of the implantation step (1) containing aluminium-magnesium-zinc metal liquid, after mixed metal liquid stands 2 minutes, by it
Pour into pig mold, that is, obtain polybasic aluminum ferroalloy deoxidant block materials.Its chemical composition is shown in Table 1.
The polybasic aluminum ferroalloy deoxidant chemical composition mass fraction % of table 1
| Element | Al | C | Si | Mn | Ca | Ba |
| Embodiment 1 | 30.24 | 0.17 | 17.82 | 5.12 | 3.02 | 4.40 |
| Embodiment 2 | 33.80 | 0.19 | 15.04 | 5.96 | 3.47 | 4.26 |
| Embodiment 3 | 34.97 | 0.16 | 16.63 | 4.21 | 3.21 | 4.13 |
| Element | Mg | RE | Zn | S | P | Fe |
| Embodiment 1 | 3.77 | 0.54 | 1.26 | 0.007 | 0.016 | Surplus |
| Embodiment 2 | 3.50 | 0.78 | 1.50 | 0.008 | 0.018 | Surplus |
| Embodiment 3 | 3.68 | 0.63 | 1.34 | 0.007 | 0.012 | Surplus |
Polybasic aluminum ferroalloy deoxidant of the present invention has been used for the deoxidation treatment of mild steel, medium carbon steel and structural alloy steel, makes
Shown with result, because containing strong deoxidant element magnesium, calcium, barium and zinc, causing its deoxidation in polybasic aluminum ferroalloy deoxidant of the present invention
Ability is significantly improved, and DNA vaccine is more than 87%.In addition, in polybasic aluminum ferroalloy deoxidant of the present invention containing more magnesium, calcium and
Appropriate rare earth element, with excellent desulphurizing ability, desulfurization power is more than 75%.Additionally, polynary alfer deoxidation of the invention
Agent also have clear improvement inclusion morphology and distribution effect.4）Using polybasic aluminum ferroalloy deoxidant of the present invention, can reduce de-
Oxygen agent consumption, reduces deoxidation of molten steel cost more than 25%, the tensile strength of cast steel ingot is improved more than 20%, impacts tough
Property improve more than 35%, popularization and application the technology of the present invention, with good economic and social benefit.
Claims (2)
1. a kind of polybasic aluminum ferroalloy deoxidant, it is characterised in that the chemical composition mass fraction % of deoxidier：30.0~
35.0Al,<0.35C, 15.0~18.0Si, 4.0~6.0Mn, 3.0~3.5Ca, 4.0~4.5Ba, 3.5~3.8Mg, 0.5~
0.8RE, 1.2~1.5Zn,<0.02S,<0.03P, surplus Fe.
2. the preparation method of a kind of polybasic aluminum ferroalloy deoxidant described in claim 1, it is characterised in that using Crucible melting
Resistance furnace and electric induction furnace melting simultaneously, and same casting ladle is injected, polynary alfer deoxidation is then poured into pig mold
Agent block materials, specific melting and pouring procedure are：(1) first fusing metal aluminium, magnesium metal and gold in Crucible melting resistance furnace
Category zinc, after metal liquid temperature reaches 720~740 DEG C, comes out of the stove into casting ladle；(2) by ferrosilicon, ferromanganese and Q235 in electric induction furnace
Steel scrap Hybrid Heating is melted, and Si-Ba alloy, calcium-silicon and rare earth ferrosilicon alloy are added after alloy material fusing, and stokehold is adjusted to
After division lattice, come out of the stove after temperature is risen into 1560~1580 DEG C, casting ladle of the implantation step (1) containing aluminium-magnesium-zinc metal liquid
It is interior, after mixed metal liquid stands 2~5 minutes, poured into pig mold, that is, obtain polybasic aluminum ferroalloy deoxidant.
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| CN113528753A (en) * | 2021-07-16 | 2021-10-22 | 芜湖县天海耐火炉料有限公司 | Multi-element alloy deoxidizer for steelmaking and preparation process thereof |
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| CN1045477C (en) * | 1996-03-18 | 1999-10-06 | 景占义 | Method for direct production of Si-Al-Ba-Ca-Fe alloy from ore |
| CN1456689A (en) * | 2003-05-26 | 2003-11-19 | 本溪冶炼厂 | Aluminum-magnesium-iron alloy deoxidant |
| CN1974796A (en) * | 2006-12-20 | 2007-06-06 | 陈恩泽 | Composite deoxidant-Al-Mg-Ca-Fe alloy and its prepn |
| CN1995407A (en) * | 2006-12-29 | 2007-07-11 | 陈恩泽 | Trace carbon Al-Mn-Fe alloy and its preparing process |
| CN100475998C (en) * | 2007-07-14 | 2009-04-08 | 包头市神润高新材料股份有限公司 | Rare earth aluminum iron alloy |
| CN101838717A (en) * | 2010-03-03 | 2010-09-22 | 包头市神润高新材料股份有限公司 | Rare earth Al-Ba-Ca-Fe alloy |
| CN102041352B (en) * | 2011-01-11 | 2013-02-06 | 刘锋 | Multi-element compound deoxidizer as well as preparation method and application thereof |
| CN103556028B (en) * | 2013-11-06 | 2015-09-16 | 攀钢集团研究院有限公司 | Containing steel-making deoxygenated alloy and the deoxidation in steel making method of magnesium, manganese |
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