CN110395998A - Vanadium iron spray gun castable and the method for vanadium iron spray gun casting - Google Patents
Vanadium iron spray gun castable and the method for vanadium iron spray gun casting Download PDFInfo
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- CN110395998A CN110395998A CN201910814537.4A CN201910814537A CN110395998A CN 110395998 A CN110395998 A CN 110395998A CN 201910814537 A CN201910814537 A CN 201910814537A CN 110395998 A CN110395998 A CN 110395998A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The present invention relates to vanadium alloy field of smelting, the method of the vanadium iron spray gun castable and the casting of vanadium iron spray gun of especially a kind of service life for improving the resistance to material of spray gun outer cover, component including following butt quality percentage: the mass percent accounting of partial size≤1.5mm white fused alumina fine powder is 10%~40%, the mass percent accounting of partial size≤0.045mm Brown Alundum fine powder is 20%~60%, the mass percent accounting of partial size≤0.074mm fine grinding ferrovanadium slag is 5%~30%, the mass percent accounting of partial size≤0.074mm fine grinding vanadium aluminium clinker is 1%~15%, the mass percent accounting of partial size≤0.074mm pure calcium aluminate cement is 2%~10% and the mass percent accounting of partial size≤0.074mm reclaimed materials is 2%~10%, material is weighed according to aforementioned proportion, and carry out dry-mixed being uniformly mixed so as to obtain castable.The effective guarantee finished product spray gun coating ingredient of resistance to material of the present invention is uniform, reduced in segregation, to improve the quality of product.Present invention is particularly suitable among the production of vanadium iron spray gun preparation.
Description
Technical field
The present invention relates to vanadium alloy field of smelting, the side of especially a kind of vanadium iron spray gun castable and the casting of vanadium iron spray gun
Method.
Background technique
Vanadium iron can effectively improve toughness, the intensity of steel-product as alloying element additive common in a kind of steel
And wearability, mechanism of action are as follows: vanadium can in steel carbon and nitrogen react, generate small and hard refractory carbide
And nitride, these compounds can play the role of fining agent and precipitation strength agent, refine the tissue and crystal grain of steel, improve crystal grain
Coarsening Temperature improve steel comprehensive performance to reduce superheated susceptivity.Straight tube furnace electro-aluminothermic process smelting ferrovanadium technique is in smelting
The reduction of remaining barium oxide in slag can all be promoted during refining using spray refining technology.
The spray refining principle that vanadium iron is smelted is: after furnace charge sufficiently completes thermit reaction, carrying out electrode with refining furnace and adds
Heat refining makes its slag in molten condition, then stops heating, rapidly by the mixture of aluminium powder and iron powder inert gas (N2)
It carries out being injected into slag under high pressure draught state, while rotary blowing pipette tips or furnace body, fills blowing material with slag
Divide and mix, continues to restore the barium oxide being not yet reduced in slag using the hot conditions of slag.After the completion of blowing again
Heated by electrodes refining is carried out, molten state slag blanket is sufficiently stirred and clinker is further refined, makes remaining metal in its slag
Vanadium settles again.Spray refining technique mainly by effectively improving thermodynamics of reactions and dynamic conditions, Lai Tigao vanadium
The rate of recovery.
Spray gun outside need has one layer of refractory material during vanadium iron spray refining, generallys use gravity flow pouring material progress
Casting.Gravity flow pouring material refers to without the i.e. flowable pourable refractory material with degassing of vibration.Its main feature is that not reducing or
It does not significantly reduce under conditions of castable performance suitably plus water is without vibration can pour into construction body of various shapes, in smelting
The industries such as gold, building are widely used.Using being more widely corundum gravity flow pouring material, it is mainly used for pyrometallurgy kiln
The positions such as furnace roof, furnace wall.The main component of corundum gravity flow pouring material is aluminium oxide, and aluminium oxide fusing point is up to 2050 DEG C, aluminium oxide
There are mainly three types of crystal forms, i.e. γ-Al2O3、β-Al2O3、α-Al2O3, structure and property is not also identical, in 1300 DEG C of high temperature
It is almost completely converted into α-Al2O3.The adverse effect that stress forms crackle is generated in order to mitigate pyroprocess crystal transfer, usually
Some SiO are added according to actual needs2, the substances such as CaO, MgO, C increase intensity and thermal shock resistance, such resistance to material is referred to as just
The beautiful compound resistance to material of base.The development trend of density fireproof castable be require aluminous cement content to reduce as far as possible, while keep compared with
Good green strength and mechanical property, key are to improve intergranular bulk density.
Vanadium iron spray refining process is in all materials and is all added after smelting furnace, and spray gun, which is submerged in slag, can continue 1-
3min, spray gun refractory material outside can be dissolved in ferrovanadium dregs during this.Rifle position is promoted after spray refining, is further led to
Electrorefining, if therefore being dissolved in the resistance to material in ferrovanadium dregs certain components and largely being reduced out and be likely to affect vanadium iron conjunction
Certain elements of gold are exceeded.Vanadium iron spray gun using when pipette tips need to be submerged among about 1900 DEG C of temperature of slag blanket, after being blown
Mention rifle, spray gun immediately from 1900 DEG C or so of context conversion to 25 DEG C or so of air in, therefore castable must outside spray gun
Palpus high temperature resistant, thermal shock resistance are good；It is Al that spray gun, which is in main component,2O3、CaO-Al2O3Etc. in the high temperature furnace slag of material compositions,
In order to reduce the rate that castable outside spray gun corrodes dissolution into clinker, and castable is dissolved into slag blanket and not will form dirt
The impurity element of vanadium iron liquid is contaminated, spray gun is needed mainly to form holding one with clinker as far as possible in chemical composition with castable
It causes, this makes live scientific and technical personnel propose harsher requirement with castable to vanadium iron spray gun.Vanadium alloy smelting system
Main waste is ferrovanadium slag, vanadium aluminium corundum slag, and ferrovanadium slag, vanadium aluminium corundum slag melting point are high, and thermal expansion coefficient is small, is suitable for
For refractory material.Be usually made field of steel metallurgy refractory material and vanadium alloy smelt furnace body stamp mass, but there is not yet
Its application report in vanadium iron spray gun castable.Existing outsourcing vanadium iron spray gun castable is mostly 0.5mm- with partial size
The magnesia of 10mm is aggregate, and using aluminous cement as matrix, magnesia particle is as enhancing particle mainly by playing pinning effect
To improve the intensity of aluminous cement；It is dehydrated by the way of natural air drying.The intensity difference of resistance to material outside vanadium iron spray gun, makes
With easy damage in the process.Spray gun refractory material outside is by after slag action, and internal metal tube exposure is easy to be etched, and heat passes
Quickening is led, aluminium powder is easier to reach fusing point inside spray gun at this time, so that being sticked to spray gun inner wall causes stifled rifle.Since live spray gun makes
It is short with the service life, limit the application effect of spray refining technique.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of service lifes for improving the resistance to material of spray gun outer cover
Vanadium iron spray gun castable and the method for vanadium iron spray gun casting.
The technical solution adopted by the present invention to solve the technical problems is: vanadium iron spray gun castable, including following butt
The component of mass percent: the mass percent accounting of partial size≤1.5mm white fused alumina fine powder be 10%~40%, partial size≤
The mass percent accounting of the Brown Alundum fine powder of 0.045mm is 20%~60%, partial size≤0.074mm fine grinding ferrovanadium slag
Mass percent accounting be 5%~30%, the mass percent accounting of partial size≤0.074mm fine grinding vanadium aluminium clinker is 1%
The mass percent accounting of~15%, partial size≤0.074mm pure calcium aluminate cement is 2%~10% and partial size≤
The mass percent accounting of the reclaimed materials of 0.074mm is 2%~10%, weighs material according to aforementioned proportion, and is carried out dry-mixed mixed
It is even to obtain castable.
Further, Al in white fused alumina fine powder2O3>=96%.
Further, Al in Brown Alundum fine powder2O3>=96%.
Further, Al in fine grinding ferrovanadium slag2O3Range is 80% >=Al2O3>=68%.
Further, Al in fine grinding vanadium aluminium clinker2O3Range is 95% >=Al2O3>=90%.
Further, Al in pure calcium aluminate cement2O3Range is 85% >=Al2O3>=78%.
Further, the reclaimed materials is the waste material in the production process of fused magnesite or magnesium aluminate spinel, it is described useless
Material is ground to 0.045mm after selected, Mechanical Crushing, screening, classification.
Further, reclaimed materials includes MgAl2O4And MgO, wherein 35% >=MgAl2O4>=15%, 85% >=MgO >=
65%.
Further, the method for vanadium iron spray gun casting, include the following steps: a, the vanadium iron spray gun for preparing of taking-up with pouring
Then the dry-mixed mixing is added for 8%~12% water and 0.01%~0.25% dispersing agent in mass percent by material feeding
Castable afterwards, and wet mixing is uniformly mixed and obtains castable ready for use, wherein the dispersion. formulation includes partial size≤5 μm point
Dissipate property aluminium oxide and Al2O3>=98%；B, after blocking the nozzle of the metal barrel of spray gun, it is vertically arranged at cylindric straight tube
In the mold of type, pour into the castable prepared, and guarantee wet castable do not had metal barrel height be 800mm~
1400mm；C, maintenance is stood after slight jolt ramming and is dried, and mold is added using electric heating or gas-fired after 72h~120h
Heat is to baking molding, and for castable heating temperature between 100 DEG C~1400 DEG C, baking time is 2h~5h in mold；D, it dries
It is demoulded after roasting, the nozzle of metal barrel is dredged after demoulding, and spray gun is installed on vanadium iron spray refining station.
The beneficial effects of the present invention are: the present invention utilizes bone by mixing a certain proportion of ferrovanadium slag and vanadium aluminium clinker
The swell difference of coefficient of material and matrix line carrys out the thermal shock resistance of balance feeding material, reduces the big rate of heat expansion of material.Select thermal expansion system
The relatively low material of number ensures that the enhancing particle that pinning effect is played in the resistance to material of finished product has higher quantity, improves to resist and peel off
With the ability of deformation.Meanwhile using corresponding vanadium iron spray gun castable, the effective guarantee finished product spray gun coating ingredient of resistance to material is equal
It is even, reduced in segregation, to improve the quality of product.Present invention is particularly suitable among the production of vanadium iron spray gun preparation.
Specific embodiment
Vanadium iron spray gun castable, the component including following butt quality percentage: partial size≤1.5mm white fused alumina fine powder
Mass percent accounting be 10%~40%, the mass percent accounting of partial size≤0.045mm Brown Alundum fine powder is 20%
The mass percent accounting of~60%, partial size≤0.074mm fine grinding ferrovanadium slag is 5%~30%, partial size≤0.074mm
The mass percent accounting of fine grinding vanadium aluminium clinker is 1%~15%, the quality percentage of partial size≤0.074mm pure calcium aluminate cement
Than accounting be 2%~10% and the mass percent accounting of partial size≤0.074mm reclaimed materials is 2%~10%, according to upper
The ratio of stating weighs material, and carries out dry-mixed being uniformly mixed so as to obtain castable.
In actually preparation, mass percent is butt quality percentage.Wherein, due to increased newly fine grinding vanadium aluminium clinker and
Fine grinding ferrovanadium slag not only realizes the effect for expanding the utilization ways of vanadium alloy metallurgical slag, also utilizes aggregate and matrix line
The difference of coefficient of swelling carrys out the thermal shock resistance of balance feeding material, reduces the big rate of heat expansion of material, and be finally obtained good effect.
In order to further improve the quality of product, there is following preferred embodiment may be selected: in preferred white fused alumina fine powder
Al2O3>=96%；It is preferred that Al in Brown Alundum fine powder2O3>=96%；Al in fine grinding ferrovanadium slag2O3Range is 80% >=Al2O3≥
68%；Al in fine grinding vanadium aluminium clinker2O3Range is 95% >=Al2O3>=90%；Al in pure calcium aluminate cement2O3Range be 85% >=
Al2O3>=78%.
For reclaimed materials, the preferably described reclaimed materials is the waste material in the production process of fused magnesite or magnesium aluminate spinel,
The waste material is ground to 0.045mm after selected, Mechanical Crushing, screening, classification, so as to fill up corundum aggregate gap,
Increase product compaction rate.Wherein, reclaimed materials includes MgAl2O4And MgO, wherein 35% >=MgAl2O4>=15%, 85% >=
MgO >=65%.
The method for carrying out vanadium iron spray gun casting with castable using vanadium iron spray gun includes the following steps: that a, taking-up are prepared
Vanadium iron spray gun castable, then by mass percent be 8%~12% water and 0.01%~0.25% dispersing agent add
Castable after entering the dry-mixed mixing, and wet mixing is uniformly mixed and obtains castable ready for use, wherein the dispersion. formulation
Including the dispersed aluminium oxide in partial size≤5 μm and Al2O3>=98%；B, after blocking the nozzle of the metal barrel of spray gun, vertically
It is set in the mold of cylindric straight barrel type, pours into the castable prepared, and guarantee that wet castable there was not the height of metal barrel
Degree is 800mm~1400mm；C, maintenance is stood after slight jolt ramming and is dried, and electric heating is used to mold after 72h~120h
Or gas-fired heating, to baking molding, between 100 DEG C~1400 DEG C, baking time is castable heating temperature in mold
2h~5h；D, it is demoulded after baking, the nozzle of metal barrel is dredged after demoulding, and spray gun is installed on vanadium iron blowing essence
Refine station.Wherein, alumina powder can fill large, medium and small intergranular stomata well, squeeze the moisture in venthole,
Moreover, castable densification degree can be improved in alumina powder under good dispersion condition.
Embodiment
Embodiment 1
Partial size≤1.5mm white fused alumina fine powder (contains Al2O3It is 40% for 96%) mass percent, partial size≤0.045mm
Brown Alundum fine powder (contains Al2O3It is 20% for 96%) mass percent, partial size≤0.074mm fine grinding ferrovanadium slag (contains Al2O3
It is 5% for 68%) mass percent, partial size≤0.074mm fine grinding vanadium aluminium clinker (contains Al2O3For mass percent 90%)
It is 15%, partial size≤0.074mm pure calcium aluminate cement (contains Al2O3It is 10% for mass percent 85%), partial size≤
The reclaimed materials of 0.5mm (contains MgAl2O4It is 15%, containing MgO for mass fraction 85%) is 10%.By 10% water, 0.01%
(0≤partial size≤3 μm account for 40% to dispersed aluminium oxide, and 3 μm≤partial size≤5 μm account for 60%, contain Al2O3For castable 98%) is added
In be sufficiently mixed uniformly；Metal barrel is blocked after nozzle and is placed in cylindric straight tube according to perpendicular to mold cross-sectional diameter direction
Pattern has in (cross-sectional inner diameter 200mm), pours into the castable prepared, guarantees that wet castable there was not the height of metal barrel
Degree is 1100mm；Maintenance is stood after slight jolt ramming and is dried, and mold carries out castable using electrically heated mode after 72h
Baking molding, castable highest heating temperature is 1400 DEG C in mold, and average heating temperature is 750 DEG C, baking time 5h；It is de-
Metal pipe mouth is dredged after mould, installation is applied to vanadium iron spray refining station.Live usage record shows every furnace vanadium iron blowing
The average access times of 2min, vanadium iron spray gun increase 4 times/root compared with before optimization spray gun coating castable.
Embodiment 2
Partial size≤1.5mm white fused alumina fine powder (contains Al2O3It is 40% for 96%) mass percent, partial size≤0.045mm
Brown Alundum fine powder (contains Al2O3It is 20% for 96%) mass percent, partial size≤0.074mm fine grinding ferrovanadium slag (contains Al2O3
It is 5% for 80%) mass percent, partial size≤0.074mm fine grinding vanadium aluminium clinker (contains Al2O3For mass percent 90%)
It is 15%, partial size≤0.074mm pure calcium aluminate cement (contains Al2O3It is 10% for mass percent 85%), partial size≤
The reclaimed materials of 0.074mm (contains MgAl2O4It is 15%, the mass fraction containing MgO85%) is 10%.By 12% water, 0.01%
(0≤partial size≤3 μm account for 40% to dispersed aluminium oxide, and 3 μm≤partial size≤5 μm account for 60%, contain Al2O3For castable 98%) is added
In be sufficiently mixed uniformly；Metal barrel is blocked after nozzle and is placed in cylindric straight tube according to perpendicular to mold cross-sectional diameter direction
Pattern has in (cross-sectional inner diameter 200mm), pours into the castable prepared, guarantees that wet castable there was not the height of metal barrel
Degree is 1400mm；Maintenance is stood after slight jolt ramming and is dried, to pouring by the way of being heated to mold using gas-fired after 120h
Material feeding carries out baking molding, and castable highest heating temperature is 1400 DEG C in mold, and average heating temperature is 750 DEG C, when baking
Between be 2h；Metal pipe mouth is dredged after demoulding, installation is applied to vanadium iron spray refining station.Live usage record shows every furnace vanadium
Iron is blown 2min, and the average access times of vanadium iron spray gun increase 2 times/root compared with before optimization spray gun coating castable.
Embodiment 3
Partial size≤1.5mm white fused alumina fine powder (contains Al2O3It is 40% for 96%) mass percent, partial size≤0.045mm
Brown Alundum fine powder (contains Al2O3It is 20% for 96%) mass percent, partial size≤0.074mm fine grinding ferrovanadium slag (contains Al2O3
It is 5% for 80%) mass percent, partial size≤0.074mm fine grinding vanadium aluminium clinker (contains Al2O3For mass percent 95%)
It is 15%, partial size≤0.074mm pure calcium aluminate cement (contains Al2O3It is 10% for mass percent 78%), partial size≤
The reclaimed materials of 0.54mm (contains MgAl2O4It is 35%, containing MgO for mass fraction 65%) is 10%.By 10% water, 0.25%
Dispersed aluminium oxide (0≤partial size≤3 μm account for 40%, and 3 μm≤partial size≤5 μm account for 60%, contain Al2O3For casting 98%) is added
It is sufficiently mixed in material uniformly；Metal barrel is blocked cylindric straight according to being placed in perpendicular to mold cross-sectional diameter direction after nozzle
In cartridge type mold (cross-sectional inner diameter 200mm), the castable prepared is poured into, guarantees that wet castable there was not metal barrel
Height is 1100mm；Maintenance is stood after slight jolt ramming and is dried, and uses electrically heated mode to castable on mold after 120h
Baking molding is carried out, castable highest heating temperature is 1400 DEG C in mold, and average heating temperature is 750 DEG C, and baking time is
2h；Metal pipe mouth is dredged after demoulding, installation is applied to vanadium iron spray refining station.Live usage record shows every furnace vanadium iron spray
2min is blown, the average access times of vanadium iron spray gun increase 2 times/root compared with before optimization spray gun coating castable.
Embodiment 4
Partial size≤1.5mm white fused alumina fine powder (contains Al2O3It is 25% for 96%) mass percent, partial size≤0.045mm
Brown Alundum fine powder (contains Al2O3It is 40% for 96%) mass percent, partial size≤0.074mm fine grinding ferrovanadium slag (contains Al2O3
It is 5% for 80%) mass percent, partial size≤0.074mm fine grinding vanadium aluminium clinker (contains Al2O3For mass percent 90%)
It is 8%, partial size≤0.074mm pure calcium aluminate cement (contains Al2O3It is 6% for mass percent 78%), partial size≤0.5mm
Reclaimed materials (contain MgAl2O4It is 35%, containing MgO for mass fraction 65%) is 6%.By 10% water, 0.25% dispersion
Property aluminium oxide (0≤partial size≤3 μm account for 40%, and 3 μm≤partial size≤5 μm account for 60%, contain Al2O3It is filled 98%) to be added in castable
Divide and is uniformly mixed；Metal barrel is blocked after nozzle and is placed in cylindric straight tube pattern according to perpendicular to mold cross-sectional diameter direction
Have in (cross-sectional inner diameter 200mm), pour into the castable prepared, guarantees that wet castable there was not the height of metal barrel to be
1100mm；Maintenance is stood after slight jolt ramming and is dried, and mold toasts castable using electrically heated form after 72h
It forms, castable highest heating temperature is 1400 DEG C in mold, and average heating temperature is 750 DEG C, baking time 5h；After demoulding
Metal pipe mouth is dredged, installation is applied to vanadium iron spray refining station.Live usage record shows every furnace vanadium iron blowing 2min, vanadium
The average access times of iron spray gun improve 1 time/root compared with before optimization spray gun coating castable.
The resistance to material of finished product castable in Examples 1 to 4 is detected, finished product castable performance compares in the discovery present invention
Excellent, relevant comparative's data are as follows:
By above-mentioned comparison, illustrate that the technical advantage of the solution of the present invention is fairly obvious, market promotion prospect is very wide.
Claims (9)
1. vanadium iron spray gun castable, which is characterized in that the component including following butt quality percentage: partial size≤1.5mm
The mass percent accounting of white fused alumina fine powder is the mass percent of 10%~40%, partial size≤0.045mm Brown Alundum fine powder
Accounting is 20%~60%, and the mass percent accounting of partial size≤0.074mm fine grinding ferrovanadium slag is 5%~30%, partial size
The mass percent accounting of the fine grinding vanadium aluminium clinker of≤0.074mm is 1%~15%, the pure calcium aluminate water of partial size≤0.074mm
The mass percent accounting of mud be 2%~10% and the mass percent accounting of partial size≤0.074mm reclaimed materials be 2%~
10%, material is weighed according to aforementioned proportion, and carry out dry-mixed being uniformly mixed so as to obtain castable.
2. vanadium iron spray gun castable as described in claim 1, it is characterised in that: Al in white fused alumina fine powder2O3>=96%.
3. vanadium iron spray gun castable as described in claim 1, it is characterised in that: Al in Brown Alundum fine powder2O3>=96%.
4. vanadium iron spray gun castable as described in claim 1, it is characterised in that: Al in fine grinding ferrovanadium slag2O3Range is
80% >=Al2O3>=68%.
5. vanadium iron spray gun castable as described in claim 1, it is characterised in that: Al in fine grinding vanadium aluminium clinker2O3Range is
95% >=Al2O3>=90%.
6. vanadium iron spray gun castable as described in claim 1, it is characterised in that: Al in pure calcium aluminate cement2O3Range is
85% >=Al2O3>=78%.
7. vanadium iron spray gun castable as described in claim 1, it is characterised in that: the reclaimed materials is fused magnesite or magnalium
Waste material in the production process of spinelle, the waste material are ground to 0.045mm after selected, Mechanical Crushing, screening, classification.
8. vanadium iron spray gun castable as described in claim 1, it is characterised in that: reclaimed materials includes MgAl2O4And MgO,
In, 35% >=MgAl2O4>=15%, 85% >=MgO >=65%.
9. the method for carrying out vanadium iron spray gun casting with castable using vanadium iron spray gun described in claim 1, which is characterized in that packet
Include following steps:
A, the vanadium iron spray gun castable prepared is taken out, the water and 0.01% for being then 8%~12% by mass percent
The castable after the dry-mixed mixing is added in~0.25% dispersing agent, and wet mixing is uniformly mixed and obtains castable ready for use,
Described in dispersion. formulation include the dispersed aluminium oxide in partial size≤5 μm and Al2O3>=98%；
B, it after blocking the nozzle of the metal barrel of spray gun, is vertically arranged in the mold of cylindric straight barrel type, pours into and prepare
Castable, and guarantee wet castable do not had metal barrel height be 800mm~1400mm；
C, maintenance is stood after slight jolt ramming and is dried, and mold is heated using electric heating or gas-fired after 72h~120h
To baking molding, for castable heating temperature between 100 DEG C~1400 DEG C, baking time is 2h~5h in mold；
D, it is demoulded after baking, the nozzle of metal barrel is dredged after demoulding, and spray gun is installed on vanadium iron spray refining
Station.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116041050A (en) * | 2023-01-12 | 2023-05-02 | 浙江自立高温科技股份有限公司 | Anti-stripping complex-phase corundum spinel castable for refining ladle and preparation method thereof |
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| JPH09157042A (en) * | 1995-12-09 | 1997-06-17 | Nippon Steel Corp | Prepared unshaped refractory |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116041050A (en) * | 2023-01-12 | 2023-05-02 | 浙江自立高温科技股份有限公司 | Anti-stripping complex-phase corundum spinel castable for refining ladle and preparation method thereof |
| CN116041050B (en) * | 2023-01-12 | 2023-11-17 | 浙江自立高温科技股份有限公司 | Anti-stripping complex-phase corundum spinel castable for refining ladle and preparation method thereof |
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| CN110395998B (en) | 2022-01-28 |
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