CN107245546A - A kind of preparation method of agent for purifying molten steel - Google Patents
A kind of preparation method of agent for purifying molten steel Download PDFInfo
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- CN107245546A CN107245546A CN201710389684.2A CN201710389684A CN107245546A CN 107245546 A CN107245546 A CN 107245546A CN 201710389684 A CN201710389684 A CN 201710389684A CN 107245546 A CN107245546 A CN 107245546A
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- cleanser
- molten steel
- active principle
- agent
- preparation
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- 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
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
Abstract
The invention discloses a kind of preparation method of agent for purifying molten steel, belong to net steel smelting technical field.The present invention's is mixed to get active principle and bonding component cleanser compound, and wherein active principle and the mass ratio of bonding component is (5~10)：1；Described active principle includes metallic aluminium, pulverized limestone, carborundum powder, titanium dioxide and biomass；Described adhesive component includes kaolin and sulfonated phenol formaldehyde resin；The bonding of cleanser compound, granulation obtain granular cleanser in the presence of cuber or pelletizer, standby after dry, cooling.Oxygen content in cleanser cleanser reduction molten steel prepared by the present invention, and the CO gases of reaction generation promote the floating removal of field trash, promote steel inclusion removing, remaining inclusion size is smaller in molten steel after the processing of this cleanser, be evenly distributed, by the mating reaction of active principle and bonding component, the clean-up effect of molten steel can be improved.
Description
Technical field
The invention belongs to clean steel technical field of smelting, more specifically to a kind of preparation method of agent for purifying molten steel.
Background technology
The performance of steel depends primarily on the chemical composition and tissue of steel.The presence of steel inclusion, destroys steel matrix
Continuity, causes the inhomogeneities of the tissue of steel, to the ductility of steel, intensity, toughness, fatigue behaviour, finish, corrosion resistance
Energy, welding performance and electromagnetic performance can all have a huge impact.Nozzle clogging, nozzle clogging can be also caused in casting process
Production and slab quality to casting process have a great impact.Therefore, steel research person in various countries' puts into larger energy and is directed to
The research that steel inclusion is removed, also achieves huge achievement in terms of research in terms of field trash.
The removal to field trash typically has two aspects both at home and abroad：One is Countermeasures, and two be that field trash is carried out
Modification.Technology controlling and process is by optimizing the technique of steel in process of production, so as to reduce the content of steel inclusion.Turning
The oxygen content of converter terminal is reduced in stove smelting process, the lower quantity of slag is reduced, ladle argon-blown is carried out in refining process, casting process
It is middle that the content of steel inclusion is reduced using molding casting.In addition, steel mill is updating to enter field trash always both at home and abroad
Row modification, to improve the cleanliness factor of steel；But cleanser is limited to molten steel purifying effect, urgent need is developed a kind of brand-new
Agent for purifying molten steel.
Through retrieval, Publication No. CN103642989A patent of invention proposes a kind of agent for purifying molten steel (applying date：
2013-11-21), the parts by weight of each component are respectively：CaO：57~63 parts, Al2O3：31~36 parts, SiO2：5~10 parts,
CaF2：6~8 parts, MAI：4~11 parts, 3~40 parts of deoxidier.The invention improves the mobility of clinker, purifies to a certain extent
Molten steel, reduces inclusion content in molten steel, but this scheme of the invention is not modified processing to field trash, do not reduce micro- in steel
The fusing point of thin field trash, it is impossible to promote growing up, float, removing for field trash well, is unfavorable for further improving product made from steel
Quality.
In addition, innovation and creation is entitled：The molten steel scavenger and production method (application number of a kind of composite sphere form：
201410715201.X the applying date：2014-11-28), molten steel scavenger takes the form of a kind of composite sphere, composite sphere by
Pelletizing core and shell are constituted, and pelletizing core is metal material, shell is carbonate, and pelletizing core is main by silicon, manganese, the alloyed powder of aluminium
Mixture is constituted, and shell is mainly by calcium carbonate, magnesium carbonate, sodium carbonate, calcium oxide, one kind of magnesia or mixed no more than three kinds
Compound is constituted.Present invention reduction entire oxygen content in the steel content, improves steel product quality, it is impossible to promote well the growing up, float of field trash,
Remove, be unfavorable for further improving the quality of product made from steel.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome in the prior art, existing cleanser is limited not to the clean-up effect of molten steel
Foot is there is provided a kind of preparation method of agent for purifying molten steel, and by the way that cleanser compound is binded, granulation obtains granular purification
Agent, the mating reaction of active principle and bonding component, can improve the clean-up effect of molten steel, further, can promote folder
Debris is grown up, floated, removes, and then improves molten steel cleanness.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of preparation method of agent for purifying molten steel of the present invention, active principle and bonding component are mixed to get cleanser and mixed
Material is closed, wherein active principle and the mass ratio of bonding component is (5~10)：1；Described active principle includes metallic aluminium, lime
Powder, carborundum powder, titanium dioxide and biomass；Described adhesive component includes kaolin and sulfonated phenol formaldehyde resin；In cuber
It is standby after dry, cooling or the bonding of cleanser compound, granulation obtain granular cleanser in the presence of pelletizer.
Preferably, comprise the following steps that：
Step one：Prepare bonding component
Take bonding component to be dried in drying box, 15~20min is stirred in stirrer for mixing after the completion of drying, mixing is equal
It is even to obtain binding component；
Step 2：Prepare active principle
Take active principle to be dried in drying box, 25~30min is stirred in stirrer for mixing after the completion of drying, mixing is equal
It is even to obtain active principle；
Step 3：Cleanser compound
Bonding component is added in the mixer of active principle, mixing completion is purified agent compound；
Step 4：Granulation
Cleanser compound is added in cuber or pelletizer, and is sprayed water into cleanser compound, cleanser is mixed
Close in the presence of material mechanical force, the bonding of cleanser compound, granulation obtain granular cleanser, and filtered out with round-hole mesh
A diameter of 5~the 10mm of grain cleanser, cleanser is dried to obtain by cleanser particle in drying box, after cooling that cleanser is close
Envelope is stand-by.
Preferably, it will be incubated in step 4 at cleanser in confined conditions 70-80 DEG C；Then by cleanser particle dry
Cleanser is dried to obtain in dry case.
Preferably, active principle also includes graphite powder, red beautiful soil and magnesium-manganese alloy.
Preferably, described active principle is constituted according to following mass parts：
Preferably, described bonding component also includes starch and oil-sand.
Preferably, described bonding component is constituted according to following mass parts：
Preferably, the active principle and bonding component mass ratio be (5~8)：1.
Preferably, the Al content in the metallic aluminium is more than 92%.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) preparation method of a kind of agent for purifying molten steel of the invention, by the way that cleanser compound is binded, granulation obtains
Granular cleanser, the mating reaction of active principle and bonding component can promote steel inclusion removing and will not be to molten steel
Secondary pollution is produced, remaining inclusion size is smaller in the molten steel after the processing of this cleanser, be evenly distributed, and the folder of remaining
Debris passes through denaturation treatment substantially, by the mating reaction of active principle and bonding component, can improve the purification effect of molten steel
Really；
(2) preparation method of a kind of agent for purifying molten steel of the invention, the grain diameter of the cleanser prepared for 5~
10mm, improves contact of the cleanser particle with molten steel, mixed effect, in molten steel under each component collective effect, reduces steel
Oxidisability in liquid, can effectively facilitate field trash removing and inclusion conditioning in molten steel, high-melting-point field trash can be to eutectic
Point field trash transformation, is conducive to the removal of field trash, and remaining field trash passes through denaturation treatment, will not be to steel product performance
Influence is produced, so as to improve the quality of molten steel；
(3) (FeO+MnO) in the preparation method of a kind of agent for purifying molten steel of the invention, refining slag with prepare it is net
The Fe and Mn that agent reaction is produced enter molten steel, Al by slag interface2O3、SiO2Slag absorption is refined, so as to reduce refining slag
Oxidation to molten steel.In clean steel smelting process, carborundum can react with the dissolved oxygen and oxide in molten steel, reduce steel
Oxygen content in liquid, and the generation that the CO gases produced reduce solid-oxide is reacted, CO gases, which float to remove, to be stirred molten steel
The floating that the effect of mixing further promotes field trash is removed；
(4) a kind of preparation method of agent for purifying molten steel of the invention, the addition of the cleanser prepared can make portion big absolutely
The calcium aluminate for dividing solid tufted alumina inclusion to become low melting point richness CaO low melting points is mingled with, and reduces dystectic tufted in steel
Al2O3The content being mingled with, and then by high-melting-point fragility Al2O3It is mingled with the field trash by modified generation low melting point, promotes field trash
Float, and easy agglomeration MnS is mingled with partly or entirely is modified to tiny CaS and is mingled with, so that cleaning molten steel.
Brief description of the drawings
Fig. 1 is embodiment 1-5 total oxygen content variation diagrams.
Fig. 2 is a kind of flow chart of the preparation method of agent for purifying molten steel of the present invention.
Embodiment
Hereafter the detailed description to the exemplary embodiment of the present invention with reference to accompanying drawing, one of accompanying drawing formation description
Point, show enforceable exemplary embodiment of the invention as example in the figure.Although these exemplary embodiment quilts
Fully describe in detail to enable those skilled in the art to implement the present invention, it is to be understood that can realize other embodiment and
Can without departing from the spirit and scope of the present invention to the present invention various changes can be made.Hereafter to embodiments of the invention
More detailed description is not limited to required the scope of the present invention, and just to be illustrated and do not limit pair
The description of the features of the present invention and feature, to propose the best mode for performing the present invention, and is sufficient so that those skilled in the art
The present invention can be implemented.Therefore, the scope of the invention is only defined by the appended claims.
Hereafter detailed description of the present invention and example embodiment can be more fully understood with reference to accompanying drawing, wherein the present invention
Element and feature are identified by reference.
Embodiment 1
The cleanser of the present embodiment is graininess, and cleanser is form of spherical particles, and particle diameter is 5~10mm；Cleanser
Including active principle and bonding component, the mass ratio of active principle and bonding component is (5~10)：1, the present embodiment preferably 8:1,
Active principle include metallic aluminium, pulverized limestone, carborundum powder, titanium dioxide and biomass, active principle by following mass parts gold
Belong to 50~70 parts of aluminium, 20~40 parts of pulverized limestone, 5~20 parts of titanium dioxide, 5~15 parts of carborundum powder, 2~4 parts of biomass, this reality
Apply example choosing：Metallic aluminium 60kg, pulverized limestone 30kg, titanium dioxide 18kg, carborundum powder 15kg, biomass 3kg.
It is worth noting that：Each component in active principle is powdery, and granularity≤0.1mm, i.e. metallic aluminium, lime
Powder, titanium dioxide, carborundum powder are powdery, and granularity≤0.1mm of metallic aluminium, pulverized limestone, titanium dioxide, biomass, carbonization
Granularity≤0.05mm of silica flour.It is worth noting that：The biomass of the present embodiment be agriculture and forestry production process in remove grain, fruit
During the lignocellulosics such as stalk, trees in addition, farming industry leftover bits and pieces, agriculture and forestry organic waste material and Animal husbandry production
Fowl and animal excrement and discarded object.
Al content in the metallic aluminium of the present embodiment is more than 92%, and the present embodiment is 93%；The lime of the present embodiment is work
Property lime, its be 1100 DEG C of calcining heat obtain crystal grain is small, the lime that porosity is high, bulk density is small, and this implementation
The activity degree for the lime that example is used is in 330ml/4N-HCl.Carborundum powder is by silicon with carbon with the nonmetallic of Covalent bonding together
Carbide.
The adhesive component of the present embodiment includes kaolin and sulfonated phenol formaldehyde resin, and adhesive component is constituted by following mass parts：
60~80 parts of kaolin, 20~40 parts of sulfonated phenol formaldehyde resin；The present embodiment is selected：Kaolin 70kg, sulfonated phenol formaldehyde resin 30kg.
Cleanser is added in molten steel (the present embodiment adds cleanser in RH refining furnaces), cleanser is to molten steel purifying
Reaction mechanism may be as follows：(FeO+MnO) content is probably 1~3% in refining latter stage refining slag, as FeO, MnO in slag
When content is higher, non-metallic inclusion will be produced, be unfavorable for improving the cleanliness factor of molten steel.In clean steel smelting process, to subtract
(FeO+MnO) and the generation of alloying element oxidation reaction in molten steel in few refining, it is therefore necessary to further reduce refining slag
Oxidisability.Cleanser is added in molten steel, following reaction can occur in molten steel for cleanser：
Al+3/2 (FeO)=1/2 (Al2O3)+3/2[Fe]
Al+3/2 (MnO)=1/2 (Al2O3)+3/2[Mn]
SiC+3 (FeO)=SiO2+CO↑+3[Fe]
SiC+3 [O]=SiO2+CO↑+3[Fe]
3(TiO2)+C=[Ti3O5]+CO
(FeO+MnO) in refining slag reacts the Fe produced with cleanser and Mn enters molten steel, Al by slag interface2O3、
SiO2Slag absorption is refined, so as to reduce oxidation of the refining slag to molten steel.In clean steel smelting process, carborundum can with molten steel
Dissolved oxygen and oxide react, reduction molten steel in oxygen content, and reaction produce CO gases reducing solid-oxide
Generation, CO gases, which float, to be removed the floating that field trash is further promoted to the stirring action of molten steel and removes.Moreover, in slag
Oxide promote at high temperature and oxidizing biomass and sulfonated phenol formaldehyde resin decompose generation H2、CH4, CO, and biomass reverse Ying Su
Degree is rapid, promotes the progress of subsequent reactions, improves the efficiency of reaction；H2、CH4[O] in slag can be reacted, so that directly
[O] content in molten steel is reduced, and reduces the generation of deoxidation type inclusion, the gas of generation is stirred to molten steel, and
Small vacuum chamber is formed in molten steel, so as to promote the floating of field trash, the cleanliness factor of molten steel is improved；And in adhesion component
Sulfonated phenol formaldehyde resin can improve the clean-up effect of molten steel in accelerator of the later stage as agitation of molten steel.And can in biomass
With TiO2Reaction, the Ti that above-mentioned reaction is produced3O5It is the atomic group of stable big ionic radius, other field trashes can be adsorbed,
Easily float and be refined slag Adsorption.In addition, the present invention carries out denaturation treatment by using pulverized limestone to field trash, pulverized limestone exists
It is more more stable than calcium metal at a temperature of steel-making, and do not allow it is volatile, do not decompose, and will not produce due to molten steel caused by blowing process
Nitrogen pick-up, can still keep total oxygen content after deoxidation relatively low in the case where original molten steel oxygen gesture is very high.
The addition of pulverized limestone can make most solid tufted alumina inclusions become the aluminic acids of low melting point richness CaO low melting points
Calcium is mingled with, and reduces dystectic tufted Al in steel2O3The content being mingled with, and then by high-melting-point fragility Al2O3It is mingled with by modification
Generate the field trash of low melting point, promote inclusion floating, and easy agglomeration MnS is mingled with partly or entirely be modified to it is tiny
CaS is mingled with, so that cleaning molten steel, improves steel product quality.The scavenger metal aluminium of the present invention, carborundum powder, biomass can drop
Oxidisability in low molten steel and slag, and the gas that carborundum powder, biomass reverse should be generated is stirred to molten steel, promotes molten steel
In inclusion floating, promote steel inclusion float up to slag interface, at the same time cleanser enters to the field trash in molten steel
Row is modified, under cleanser each component collective effect of the present invention, is reduced the oxidisability in molten steel of knowing clearly, can be effectively facilitated molten steel
Middle field trash removing and inclusion conditioning, modified field trash turn into multilayered sphere, and field trash is tiny and is evenly distributed, high
Melting point inclusions can change to lower melting point inclusion, be conducive to the removal of field trash, and the molten steel in the presence of Gas Stirring
Middle remaining inclusion size is smaller, be evenly distributed, and the field trash of remaining passes through denaturation treatment substantially, will not be to steel product
Performance produces influence, so that the quality of molten steel is improved, the total oxygen content after detection is modified in molten steel, and record such as the institute of table 1
Show, data variation is as shown in Figure 1.
More using the steel inclusion quantity of cleanser, field trash type is mainly dystectic tufted Al2O3Folder
Miscellaneous, inclusion size accounts for more than 70% more than 3 μm, and account for field trash total amount 20% or so more than 10 μm.Through molten steel purifying
The amount of inclusions after agent processing in steel is less, and inclusion size is smaller, and size accounts for field trash total amount 80%, folder less than 3 μm
Debris type is mainly the Al of individualism in magnesium aluminate spinel and Silicate inclusion thing, steel2O3It is mingled with less.Experimental study
Show that the inclusion content of steel after being handled using agent for purifying molten steel is significantly reduced, steel inclusion is denatured, molten steel
Clean-up effect is obvious.Using remaining inclusion size is smaller, be evenly distributed in the molten steel after the cleanser processing of embodiment 1, and
The field trash of remaining passes through denaturation treatment substantially, will not produce influence to steel product performance.
Total oxygen content/ppm before and after the addition cleanser of table 1 in molten steel
As shown in Fig. 2 a kind of preparation method of agent for purifying molten steel of the present embodiment, is comprised the following steps that：
Step one：Prepare bonding component
Kaolin 70kg and sulfonated phenol formaldehyde resin 30kg are weighed by mass parts to dry in drying box, are being stirred after the completion of drying
15~20min of mixing in machine is mixed, the present embodiment is 18min, it is well mixed to obtain binding component；
Step 2：Prepare active principle
Metallic aluminium 60kg, pulverized limestone 30kg, titanium dioxide 18kg, carborundum powder 15kg and biomass are weighed by mass parts
3kg is dried in drying box, stirs 25~30min in stirrer for mixing after the completion of drying, the present embodiment is 30min, mixing
Uniformly obtain active principle；
Step 3：Cleanser compound
Bonding component is added in the mixer of active principle, and active principle and the mass ratio of bonding component are 8:1,
Mixing completion is purified agent compound；
Step 4：Granulation
Cleanser compound is added in pelletizer, and is sprayed water into cleanser compound, cleanser compound roller press
In the presence of tool power, the bonding of cleanser compound, granulation obtain granular cleanser, and filter out particle diameter with round-hole mesh
For 5~10mm cleanser；The grain diameter of cleanser is 5~10mm, improves contact, mixing of the cleanser particle with molten steel
Effect, improves the kinetics of cleanser and molten steel, then will be incubated 1h at cleanser in confined conditions 70 DEG C；Then
Cleanser particle is dried to obtain cleanser in drying box, cleanser is sealed stand-by after cooling.The CaO during granulation
Modifying process is carried out to biomass, and then improves the intensity of cleanser particle, it is to avoid granule atomization, and biomass is in high temperature bar
Part is in the decomposition of the biomass under the promotion of metallic element, and carborundum powder, biomass and metallic aluminium collective effect reduce molten steel
In oxygen content, produce gas and accelerate the progress of reaction, carborundum powder, biomass can further produce gas and promote field trash
Float, pulverized limestone, carborundum powder, titanium dioxide improve molten steel and goes during being mingled with to be mingled with the dynamic conditions for floating and removing, and
To being modified or adsorbing to field trash, so as to promote the inclusion floating in molten steel, further promote field trash
Remove, reduce the content of nonmetallic inclusionsin steel, improve the quality of molten steel.
The present invention cleanser in molten steel field trash removing and will not secondary pollution molten steel research, by the present invention
Remaining inclusion size in the molten steel of removing is smaller, be evenly distributed, and the field trash of remaining passes through denaturation treatment substantially, no
Influence can be produced on steel part performance.
Embodiment 2
The substance be the same as Example 1 of the present embodiment, difference is：Cleanser is graininess, and cleanser is spherical
Graininess, particle diameter is 5~10mm；Cleanser includes the matter of active principle and bonding component, active principle and bonding component
Amount is than being (5~10)：1, the present embodiment preferably 5:1.
Active principle in the present embodiment cleanser also includes graphite powder, red beautiful soil and magnesium-manganese alloy；Active principle according to
Following mass parts composition, 50~70 parts of metallic aluminium, 20~40 parts of pulverized limestone, 0~30 part of graphite powder, 5~20 parts of titanium dioxide, carbon
5~15 parts of SiClx powder, 2~4 parts of biomass, red beautiful 0~1 part of soil, 0-2 parts of magnesium-manganese alloy；The present embodiment is metallic aluminium 50kg, stone
Ashes 20kg, graphite powder 10kg, titanium dioxide 5kg, carborundum powder 5kg, biomass 4kg, red jade soil 1kg, magnesium-manganese alloy 2kg.
A kind of preparation method of agent for purifying molten steel of the present embodiment, is comprised the following steps that：
Step one：Prepare bonding component
Kaolin 60kg and sulfonated phenol formaldehyde resin 20kg are weighed by mass parts to dry in drying box, are being stirred after the completion of drying
15~20min of mixing in machine is mixed, the present embodiment is 15min, it is well mixed to obtain binding component；
Step 2：Prepare active principle
By mass parts weigh metallic aluminium 50kg, pulverized limestone 20kg, graphite powder 10kg, titanium dioxide 5kg, carborundum powder 5kg,
Biomass 4kg, red jade soil 1kg and magnesium-manganese alloy 2kg are dried in drying box, and 25 are stirred in stirrer for mixing after the completion of drying
~30min, the present embodiment is 25min, well mixed to obtain active principle；
Step 3：Cleanser compound
Bonding component is added in the mixer of active principle, and active principle and the mass ratio of bonding component are 5:1,
Mixing completion is purified agent compound；
Step 4：Granulation
Cleanser compound is added in pelletizer, and is sprayed water into cleanser compound, cleanser compound roller press
In the presence of tool power, the bonding of cleanser compound, granulation obtain granular cleanser, and filter out particle diameter with round-hole mesh
For 5~10mm cleanser；1h then will be incubated at cleanser in confined conditions 75 DEG C；Then by cleanser particle in drying
Cleanser is dried to obtain in case, cleanser is sealed stand-by after cooling.Total oxygen content after detection is modified in molten steel, and record
As shown in table 1, data variation is as shown in Figure 1.Using remaining inclusion size in the molten steel after the cleanser processing of embodiment 2 compared with
It is small, be evenly distributed, will not on steel product performance produce influence.
The present invention further increases deoxidation effect, and this is probably due to metallic aluminium, graphite powder, biomass, carborundum, red
Beautiful soil and magnesium-manganese alloy powder collective effect promote the removing of the oxygen in molten steel, and on the one hand magnesium-manganese alloy powder has preferable deoxidation
Effect, and magnesium-manganese alloy powder further promotes the progress deoxidation of the materials such as metallic aluminium, biomass and carborundum, and graphite
The gas of powder, biomass and carborundum powder reaction generation is stirred to molten steel, the reaction production of red beautiful soil and titanium dioxide jointly
Thing is adsorbed to field trash, promotes the floating of field trash, and then improves the quality of molten steel.
Embodiment 3
The substance be the same as Example 1 of the present embodiment, difference is：The bonding component of cleanser also include starch and
Kaolin, bonding component is constituted according to following mass parts：60~80 parts of kaolin, 20~40 parts of sulfonated phenol formaldehyde resin, starch 0-
10 parts, 0-5 parts of oil-sand.The present embodiment is constituted according to following quality：Kaolin 80kg, sulfonated phenol formaldehyde resin 40kg, starch 5kg,
Oil-sand 2kg.Total oxygen content after detection is modified in molten steel, and record as shown in table 1, data variation is as shown in figure 1, effective group
Divide and the mass ratio of bonding component is 6:1, mixing completion is purified agent compound.
A kind of preparation method of agent for purifying molten steel of the present embodiment, is comprised the following steps that：
Step one：Prepare bonding component
Kaolin 80kg, sulfonated phenol formaldehyde resin 40kg, starch 5kg and oil-sand 2kg are weighed by mass parts to do in drying box
It is dry, 15~20min is stirred in stirrer for mixing after the completion of drying, the present embodiment is 20min, it is well mixed to obtain bonding group
Point；
Step 2：Prepare active principle
Metallic aluminium 60kg, pulverized limestone 30kg, titanium dioxide 18kg, carborundum powder 15kg and biomass are weighed by mass parts
3kg is dried in drying box, stirs 25~30min in stirrer for mixing after the completion of drying, the present embodiment is 28min, mixing
Uniformly obtain active principle；
Step 3：Cleanser compound
Bonding component is added in the mixer of active principle, and active principle and the mass ratio of bonding component are 6:1,
Mixing completion is purified agent compound；
Step 4：Granulation
Cleanser compound is added in cuber, and is sprayed water into cleanser compound, cleanser compound is in briquetting
In the presence of machine pressurization, the bonding of cleanser compound, granulation obtain granular cleanser, and it is straight with round-hole mesh to filter out particle
Footpath is 5~10mm cleanser；1h then will be incubated at cleanser in confined conditions 80 DEG C；Then by cleanser particle dry
Cleanser is dried to obtain in dry case, cleanser is sealed stand-by after cooling.
Embodiment 4
The substance be the same as Example 2 of the present embodiment, difference is：Cleanser is graininess, and cleanser is spherical
Graininess, particle diameter is 5~10mm；Cleanser includes the matter of active principle and bonding component, active principle and bonding component
Amount is than being (5~10)：1, the present embodiment preferably 10:1.
Active principle in the present embodiment cleanser also includes urea, and described urea is graininess；The present embodiment is gold
Category aluminium 70kg, pulverized limestone 40kg, graphite powder 30kg, titanium dioxide 20kg, carborundum powder 15kg, biomass 2kg, red jade soil 1kg,
Magnesium-manganese alloy 1kg, urea 0.2kg.
The preparation method of the preparation method of the present embodiment such as embodiment 1, difference is：
Step 2：Preparing active principle preparation method is：Metallic aluminium 70kg, pulverized limestone 40kg, graphite are weighed by mass parts
Powder 30kg, titanium dioxide 20kg, carborundum powder 15kg, biomass 2kg, red jade soil 1kg, magnesium-manganese alloy 1kg, urea 0.2kg exist
Dried in drying box, stir 25~30min in stirrer for mixing after the completion of drying, the present embodiment is 30min, be well mixed
To active principle.By cleanser in molten steel, the total oxygen content in molten steel after being modified then is detected, and records as shown in table 1,
Data variation is as shown in Figure 1；Remaining inclusion size is smaller in molten steel after processing, be evenly distributed, and the field trash base of remaining
This passes through denaturation treatment, will not produce influence to steel product performance.The present invention further increases deoxidation effect, and this may
It is due to that metallic aluminium, graphite powder, biomass, carborundum, Chi Yutu, magnesium-manganese alloy powder and urea collective effect are promoted in molten steel
Oxygen removing, on the one hand magnesium-manganese alloy powder have preferable deoxidation effect, and magnesium-manganese alloy powder further promotes gold
Belong to the materials such as aluminium, biomass and carborundum and carry out deoxidation, and the gas that graphite powder, biomass and carborundum powder reaction are generated is to steel
Liquid is stirred, and the Ammonia material that particularly urea can be decomposed rapidly when heated in generation analyte, analyte has stronger
Reproducibility, improve deoxidation effect, and the gas that reaction product is produced is stirred to molten steel, improves the upper of field trash
It is floating.
Embodiment 5
The substance be the same as Example 2 of the present embodiment, difference is：Cleanser is graininess, and cleanser is spherical
Graininess, particle diameter is 5~10mm；Cleanser includes the matter of active principle and bonding component, active principle and bonding component
Amount is than being (5~10)：1, the present embodiment preferably 9:1.Active principle in the present embodiment cleanser also includes peat, the present embodiment
For metallic aluminium 70kg, pulverized limestone 40kg, graphite powder 30kg, titanium dioxide 20kg, carborundum powder 15kg, biomass 2kg, Chi Yutu
1kg, magnesium-manganese alloy 1kg, peat 1kg.Cleanser is added in molten steel, the total oxygen content in molten steel after being modified then is detected,
And recording as shown in table 1, data variation is as shown in Figure 1.
Using the present invention cleanser in metallic aluminium, graphite powder, biomass, carborundum, Chi Yutu, magnesium-manganese alloy powder and
Peat collective effect promotes the removing of the oxygen in molten steel, and on the one hand magnesium-manganese alloy powder has preferable deoxidation effect, and magnesium
Manganese alloy powder further promotes the materials such as metallic aluminium, biomass and carborundum and carries out deoxidation, and graphite powder, biomass and carbon
The gas of SiClx powder reaction generation is stirred to molten steel, improves deoxidation effect；It is furthermore possible to effectively facilitate in molten steel and is mingled with
Thing is removed and inclusion conditioning, and modified field trash turns into multilayered sphere, tiny and be evenly distributed, high-melting-point field trash energy
It is enough to change to lower melting point inclusion, be conducive in the molten steel after the removal of field trash, and processing remaining inclusion size it is smaller, point
Cloth is uniform, and the field trash of remaining passes through denaturation treatment substantially, will not produce influence to steel product performance；In addition, reaction
The gas that product is produced is stirred to molten steel, improves the floating of field trash.
The present invention is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that can not take off
Various modifications and variations are carried out in the case of from the scope of the present invention being defined by the following claims.Detailed description and drawings
Should be to be considered only as it is illustrative and not restrictive, if there is any such modifications and variations, then they all will
Fall into the scope of the present invention described here.In addition, background technology is intended to illustrate the Development Status and meaning of this technology,
It is not intended to limit the application field of the present invention or the application and the present invention.
Although more specifically, have been described herein the present invention exemplary embodiment, the invention is not limited in
These embodiments, but including those skilled in the art according to above detailed description it can be appreciated that it is modified, omit,
Any and whole embodiments of (such as between each embodiment) combination, adaptive change and/or replacement.In claim
Restriction can widely be explained according to the language used in claim, and be not limited in foregoing detailed description or in reality
The example described during this application is applied, these examples are considered as nonexcludability.For example, in the present invention, term is " preferably
Ground " not exclusively, preferably, here it means that " but be not restricted to that ".It is in office where method or process claims
In any step for enumerating can perform and be not limited to the order proposed in claim in any order.Therefore, it is of the invention
Scope only should be determined by appended claims and its legal equivalents, rather than by descriptions and examples given above Lai
It is determined that.
Claims (9)
1. a kind of preparation method of agent for purifying molten steel, it is characterised in that：Active principle and bonding component are mixed to get cleanser
Compound, wherein active principle and bonding component mass ratio be (5~10)：1；Described active principle includes metallic aluminium, stone
Ashes, carborundum powder, titanium dioxide and biomass；Described adhesive component includes kaolin and sulfonated phenol formaldehyde resin；In briquetting
The bonding of cleanser compound, granulation obtain granular cleanser in the presence of machine or pelletizer, standby after dry, cooling.
2. a kind of preparation method of agent for purifying molten steel according to claim 1, it is characterised in that：Comprise the following steps that：
Step one：Prepare bonding component
Take bonding component to be dried in drying box, 15~20min is stirred in stirrer for mixing after the completion of drying, be well mixed
To bonding component；
Step 2：Prepare active principle
Take active principle to be dried in drying box, 25~30min is stirred in stirrer for mixing after the completion of drying, be well mixed
To active principle；
Step 3：Cleanser compound
Bonding component is added in the mixer of active principle, mixing completion is purified agent compound；
Step 4：Granulation
Cleanser compound is added in cuber or pelletizer, and is sprayed water into cleanser compound, cleanser compound
In the presence of mechanical force, the bonding of cleanser compound, granulation obtain granular cleanser, and it is straight with round-hole mesh to filter out particle
Footpath is 5~10mm cleanser, and cleanser particle is dried to obtain into cleanser in drying box, treats cleanser sealing after cooling
With.
3. a kind of preparation method of agent for purifying molten steel according to claim 2, it is characterised in that：By cleanser in step 4
It is incubated in confined conditions at 70-80 DEG C；Cleanser particle is then dried to obtain cleanser in drying box.
4. a kind of preparation method of agent for purifying molten steel according to claim 2, it is characterised in that：Active principle also includes stone
Ink powder, red beautiful soil and magnesium-manganese alloy.
5. a kind of preparation method of agent for purifying molten steel according to claim 2, it is characterised in that：Described active principle is pressed
According to following mass parts composition：
6. a kind of preparation method of agent for purifying molten steel according to claim any one of 2-4, it is characterised in that：Described is glutinous
Charge-coupled point also includes starch and oil-sand.
7. a kind of preparation method of agent for purifying molten steel according to claim 6, it is characterised in that：Described bonding component is pressed
According to following mass parts composition：
8. a kind of preparation method of agent for purifying molten steel according to claim 6, it is characterised in that：The active principle and glutinous
Charge-coupled point of mass ratio is (5~8)：1.
9. a kind of preparation method of agent for purifying molten steel according to claim 7 or 8, it is characterised in that：In the metallic aluminium
Al content be more than 92%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559817A (en) * | 2018-05-08 | 2018-09-21 | 华北理工大学 | A kind of inorganic agent and preparation method thereof for cleaning molten steel |
| CN110819767A (en) * | 2019-11-20 | 2020-02-21 | 曲靖促创科技有限公司 | Refining agent and refining process for scrap iron steelmaking |
| CN113072384A (en) * | 2021-03-29 | 2021-07-06 | 安徽工业大学 | Novel oxide metallurgy process |
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| CN1410557A (en) * | 2002-12-03 | 2003-04-16 | 黄雁茹 | Aluminium slagging deoxygen ball |
| CN1521279A (en) * | 2003-01-27 | 2004-08-18 | 梅一峰 | High alumina slag ball and preparing method thereof |
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| CN1410557A (en) * | 2002-12-03 | 2003-04-16 | 黄雁茹 | Aluminium slagging deoxygen ball |
| CN1521279A (en) * | 2003-01-27 | 2004-08-18 | 梅一峰 | High alumina slag ball and preparing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559817A (en) * | 2018-05-08 | 2018-09-21 | 华北理工大学 | A kind of inorganic agent and preparation method thereof for cleaning molten steel |
| CN110819767A (en) * | 2019-11-20 | 2020-02-21 | 曲靖促创科技有限公司 | Refining agent and refining process for scrap iron steelmaking |
| CN113072384A (en) * | 2021-03-29 | 2021-07-06 | 安徽工业大学 | Novel oxide metallurgy process |
| CN113072384B (en) * | 2021-03-29 | 2022-11-29 | 安徽工业大学 | Oxide metallurgy process |
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