CN106396645B - A kind of ladle resistant to corrosion brick and its application method - Google Patents
A kind of ladle resistant to corrosion brick and its application method Download PDFInfo
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- CN106396645B CN106396645B CN201610823450.XA CN201610823450A CN106396645B CN 106396645 B CN106396645 B CN 106396645B CN 201610823450 A CN201610823450 A CN 201610823450A CN 106396645 B CN106396645 B CN 106396645B
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
- C04B35/62802—Powder coating materials
- C04B35/62805—Oxide ceramics
- C04B35/62826—Iron group metal oxides
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
- C04B35/62802—Powder coating materials
- C04B35/62842—Metals
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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
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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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
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Ceramic Products (AREA)
Abstract
The present invention relates to a kind of ladle resistant to corrosion bricks and its application method.Its technical solution is: using the aluminum-spinel fine powder of the modification corundum in granules of 41 ~ 62wt%, the corundum fine powder of 25 ~ 35wt% and 10 ~ 25wt% as raw material, mixing；The phenol phenolic resin of additional 3 ~ 5wt% of raw material, mixed grind, molding keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle resistant to corrosion brick is made.The preparation method of modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol is 1: (1 ~ 2): (1 ~ 2)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, magnetic-particle dispersion liquid is obtained；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: corundum in granules is impregnated 1 ~ 3h by (1 ~ 3) in magnetic-particle dispersion liquid, and 12 ~ 24 hours corundum in granules modified to get surface are toasted under the conditions of 80 ~ 200 DEG C.The present invention has the characteristics that purifying of steel, slag resistance are good, erosion-resisting characteristics is good and the service life is long.
Description
Technical field
The invention belongs to technical field of refractory materials.More particularly to a kind of ladle resistant to corrosion brick and its application method.
Background technique
Refractory material is the basic material of high-temperature technology, it has with high-temperature technology, especially with the development of steel and iron industry
Very close relationship.In metallurgical industry field, refractory material not only undertakes container effect, also participates in the physics of smelting process
And chemical reaction, the quality of steel is had a major impact.In metallurgical industry kiln lining brick, about 50 ~ 60% refractory damage
It is such as various converter furnace linings, ladle working lining as caused by various slag actions.Therefore, with slag contacts
Refractory material is influenced by the erosion and infiltration of slag, on the one hand, with the refractory material of slag contacts can be dissolved into slag with
And in molten steel；On the other hand, the infiltration of slag also results in refractory material and occurs rotten or even peel off.This not only will affect fire resisting
The service life of material, and the quality of molten steel can be influenced because of deteriorating for refractory material.Therefore it is excellent to develop slag resistance
And stable refractory material, it is one of focal point of those skilled in the art.
The patented technology of " a kind of refractory brick and its production method " (CN101503303), by black reclaimed sand particle and powder,
Fused magnesite particle, magnesite clinker particle, a variety of antioxidants, metallic silicon power and graphite sequentially add in blender, add
Resinoid bond stirs evenly, the compression moulding on brick machine by the material being kneaded, and carries out subsequently into far-infrared ray drying kiln
Drying, keeps the temperature 12 ~ 24 hours under the conditions of 120 ~ 200 DEG C, finished product.Although the product corrosion resistance is preferable, graphite
Be introduced into the carbon content that will increase in molten steel, pollute molten steel." a kind of carbon-free ladle brick and preparation method thereof "
(CN102515794A) using bauxite chamotte, corundum system raw material, magnesia, alumina powder as primary raw material, oxidation is added
Iron, magnesium chloride solution, calgon and yellow starch gum, after specific step mixing, ageing mixture 30 minutes, compression moulding, at 200 DEG C
It is 24 hours dry, it can be prepared by carbon-free ladle brick.Although the product does not introduce carbon source, the ability of purifying of steel is poor." one
Kind carbon-free steel cylinder-packing refractory brick " (CN103787674A) patented technology, with white fused alumina particle, α-Al2O3, electric smelting aluminum-spinel
Powder, magnesia, metallic aluminium powder, calgon, the magnesium chloride solution of concentration 25% and wooden sodium sulfonate are raw material, are made carbon-free
Ladle serves as a contrast refractory brick.Though the patented technology has the characteristics that simple process and at low cost, its slag resistance is unsatisfactory.
In short, ladle refractory brick in the prior art molten steel easy to pollute, the ability of purifying of steel are poor, slag resistance not
Ideal and service life is shorter.
Summary of the invention
The present invention is directed to overcome prior art defect, it is therefore an objective to provide it is a kind of can purifying of steel, slag resistance be good, anti-erosion
Performance is good and ladle with long service life resistant to corrosion brick and its application method.
To realize above-mentioned task, the technical scheme adopted by the invention is that: with the modification corundum in granules of 41 ~ 62wt%, 25 ~
The corundum fine powder of 35wt% and the aluminum-spinel fine powder of 10 ~ 25wt% are raw material, are stirred and evenly mixed；Additional 3 ~ the 5wt%'s of raw material
Phenol phenolic resin, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle resistant to corrosion brick is made.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1 ~ 2): (1 ~ 2)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, magnetic-particle dispersion is obtained
Liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1 ~ 3), by corundum in granules in magnetic-particle dispersion liquid
1 ~ 3h is impregnated, the corundum in granules after taking out dipping toasts 12 ~ 24 hours under the conditions of 80 ~ 200 DEG C to get the rigid of surface modification
Beautiful particle.
The main component and its content of the corundum in granules are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；The corundum
The granularity of particle is 1 ~ 5mm.
The main component and its content of the corundum fine powder are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；The corundum
Granularity≤450 μm of fine powder.
The main component and its content of the aluminum-spinel are as follows: Al2O3>=71.16wt%, MgO >=27.86%, Na2O≤
0.01wt%；The granularity of the aluminum-spinel is 0.088 ~ 1mm.
The organic dispersing agent is one or more of lauryl sodium sulfate, calgon, polyethylene glycol, oleic acid.
The main component and its content of the phenol phenolic resin are as follows: water≤5%；Fixed carbon >=78%；Free phenol≤10%.
The main component and its content of the dehydrated alcohol be are as follows: ethyl alcohol >=99.7wt%, water≤0.3%, methanol≤
0.05%, isopropanol≤0.01%.
The micron order magnetic-particle is iron micro mist, cobalt micro mist, nickel micro mist, magnetic iron ore micro mist, Ni ferrite micro mist, ferro-cobalt
Two kinds of mixtures or three kinds of mixtures in oxysome micro mist, iron cobalt nickel alloy micro mist；The granularity of the micron order magnetic-particle≤
88μm。
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 50 ~ 300A；Power frequency be 150 ~
4000Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art:
The present invention utilizes the behavioural characteristic of magnetorheological fluid, and micron order magnetic-particle is added in alumina-magnesia brick, when modified corundum
When the magnetic-particle of particle surface is entered in slag, the regional area at ladle resistant to corrosion brick and slag contacts interface forms magnetic current
Become liquid.When applying magnetic field around ladle resistant to corrosion brick, suspended particulate forms chain, column or increasingly complex along magnetic direction
Structure, the melt in the regional area and stomata at ladle resistant to corrosion brick and slag contacts interface rapidly goes to class solid, can
Be substantially reduced between slag and ladle resistant to corrosion brick mass transfer rate, mitigate slag to the erosion of ladle resistant to corrosion brick and
The influence of infiltration, the service life for extending ladle resistant to corrosion brick and reduction to steel quality.After the completion of smelting operation, remove resistance to
Magnetic field around firebrick, loses magnetism interaction between magnetic-particle and chain structure is destroyed, and system viscosity sharply declines, again
Slurry can be rapidly gone to, slag will not be sticky in ladle resistant to corrosion brick surface, can continue to use in next circulation operation.And
And under the influence of a magnetic field, the removal that can promote inclusion content in melting steel, achievees the purpose that purifying of steel.
Ladle resistant to corrosion brick is through detecting prepared by the present invention: erosion rate is 0.1 ~ 0.6mm/ furnace.
Therefore, ladle prepared by the present invention with resistant to corrosion brick have purifying of steel, slag resistance is good, erosion-resisting characteristics is good and
The feature of service life length.
Specific embodiment
The invention will be further described With reference to embodiment, not limiting of its scope.
It is first that raw material involved in present embodiment and technological parameter Unify legislation is as follows to avoid repeating, implement
It is repeated no more in example:
The main component and its content of the corundum in granules are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；The corundum
The granularity of particle is 1 ~ 5mm.
The main component and its content of the corundum fine powder are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；The corundum
Granularity≤450 μm of fine powder.
The main component and its content of the aluminum-spinel are as follows: Al2O3>=71.16wt%, MgO >=27.86%, Na2O≤
0.01wt%；The granularity of the aluminum-spinel is 0.088 ~ 1mm.
The main component and its content of the phenol phenolic resin are as follows: water≤5%；Fixed carbon >=78%；Free phenol≤10%.
The main component and its content of the dehydrated alcohol be are as follows: ethyl alcohol >=99.7wt%, water≤0.3%, methanol≤
0.05%, isopropanol≤0.01%.
Granularity≤88 μm of the micron order magnetic-particle.
Embodiment 1
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 41 ~ 44wt%,
The corundum fine powder of 32 ~ 35wt% and the aluminum-spinel fine powder of 21 ~ 25wt% are raw material, are stirred and evenly mixed；The additional raw material 3 ~
The phenol phenolic resin of 4wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.0 ~ 1.4): (1.0 ~ 1.4)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1.0 ~ 1.6), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 20 ~ 24 hours under the conditions of 80 ~ 110 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 50 ~ 110A；Power frequency be 150 ~
600Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is lauryl sodium sulfate.
The micron order magnetic-particle is the mixture of iron micro mist and cobalt micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.1 ~ 0.3mm/ furnace.
Embodiment 2
A kind of ladle resistant to corrosion brick and its application method.The present embodiment is that magnetic iron ore is micro- except the micron order magnetic-particle
Outside the mixture of powder, Ni ferrite micro mist and iron cobalt nickel alloy micro mist, remaining is the same as embodiment 1.
Embodiment 3
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 43 ~ 47wt%,
The corundum fine powder of 31 ~ 34wt% and the aluminum-spinel fine powder of 21 ~ 25wt% are raw material, are stirred and evenly mixed；The additional raw material 3 ~
The phenol phenolic resin of 4wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.2 ~ 1.6): (1.2 ~ 1.6)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1.2 ~ 1.8), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 17 ~ 21 hours under the conditions of 100 ~ 140 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 100 ~ 160A；Power frequency is 500
~1100Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is calgon.
The micron order magnetic-particle is the mixture of cobalt micro mist and nickel micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.2 ~ 0.3mm/ furnace.
Embodiment 4
A kind of ladle resistant to corrosion brick and its application method.The present embodiment except the micron order magnetic-particle be cobalt micro mist,
Outside the mixture of Conjugate ferrite micro mist and iron cobalt nickel alloy micro mist, remaining is the same as embodiment 3.
Embodiment 5
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 46 ~ 49wt%,
The corundum fine powder of 30 ~ 32wt% and the aluminum-spinel fine powder of 19 ~ 23wt% are raw material, are stirred and evenly mixed；The additional raw material 4 ~
The phenol phenolic resin of 5wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.4 ~ 1.8): (1.4 ~ 1.8)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1.4 ~ 2.0), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 14 ~ 18 hours under the conditions of 130 ~ 170 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 150 ~ 210A；Power frequency is
1000~1600Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is polyethylene glycol.
The micron order magnetic-particle is the mixture of nickel micro mist and magnetic iron ore micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.4 ~ 0.5mm/ furnace.
Embodiment 6
A kind of ladle resistant to corrosion brick and its application method.The present embodiment except the micron order magnetic-particle be iron micro mist,
Outside the mixture of Conjugate ferrite micro mist and iron cobalt nickel alloy micro mist, remaining is the same as embodiment 5.
Embodiment 7
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 48 ~ 52wt%,
The corundum fine powder of 29 ~ 31wt% and the aluminum-spinel fine powder of 19 ~ 23wt% are raw material, are stirred and evenly mixed；The additional raw material 4 ~
The phenol phenolic resin of 5wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.6 ~ 2.0): (1.6 ~ 2.0)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1.6 ~ 2.2), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 12 ~ 15 hours under the conditions of 160 ~ 200 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 200 ~ 260A；Power frequency is
1500~2100Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is oleic acid.
The micron order magnetic-particle is the mixture of magnetic iron ore micro mist and Ni ferrite micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.4 ~ 0.6mm/ furnace.
Embodiment 8
A kind of ladle resistant to corrosion brick and its application method.The present embodiment is Ni ferrite except the micron order magnetic-particle
Outside the mixture of micro mist, Conjugate ferrite micro mist and iron cobalt nickel alloy micro mist, remaining is the same as embodiment 7.
Embodiment 9
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 51 ~ 54wt%,
The corundum fine powder of 28 ~ 30wt% and the aluminum-spinel fine powder of 16 ~ 20wt% are raw material, are stirred and evenly mixed；The additional raw material 3 ~
The phenol phenolic resin of 4wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.0 ~ 1.4): (1.6 ~ 2.0)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1.8 ~ 2.4), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 20 ~ 24 hours under the conditions of 80 ~ 110 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 250 ~ 300A；Power frequency is
2000~2600Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is the mixture of lauryl sodium sulfate and calgon.
The micron order magnetic-particle is the mixture of Ni ferrite micro mist and Conjugate ferrite micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.3 ~ 0.5mm/ furnace.
Embodiment 10
A kind of ladle resistant to corrosion brick and its application method.The present embodiment is that magnetic iron ore is micro- except the micron order magnetic-particle
Outside the mixture of powder, Ni ferrite micro mist and Conjugate ferrite micro mist, remaining is the same as embodiment 9.
Embodiment 11
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 53 ~ 57wt%,
The corundum fine powder of 27 ~ 29wt% and the aluminum-spinel fine powder of 14 ~ 17wt% are raw material, are stirred and evenly mixed；The additional raw material 3 ~
The phenol phenolic resin of 4wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.2 ~ 1.6): (1.4 ~ 1.8)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (2.0 ~ 2.6), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 17 ~ 21 hours under the conditions of 100 ~ 140 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 50 ~ 110A；Power frequency is 2500
~3100Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is the mixture of calgon and polyethylene glycol.
The micron order magnetic-particle is the mixture of Conjugate ferrite micro mist and iron cobalt nickel alloy micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.3 ~ 0.4mm/ furnace.
Embodiment 12
A kind of ladle resistant to corrosion brick and its application method.The present embodiment except the micron order magnetic-particle be nickel micro mist,
Outside the mixture of magnetic iron ore micro mist and Ni ferrite micro mist, remaining is the same as embodiment 11.
Embodiment 13
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 56 ~ 60wt%,
The corundum fine powder of 27 ~ 29wt% and the aluminum-spinel fine powder of 12 ~ 15wt% are raw material, are stirred and evenly mixed；The additional raw material 4 ~
The phenol phenolic resin of 5wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 150 ~ 200 DEG C, and ladle is made and is invaded with resistance to
Lose brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.4 ~ 1.8): (1.2 ~ 1.6)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (2.2 ~ 2.8), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 14 ~ 18 hours under the conditions of 130 ~ 170 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 100 ~ 160A；Power frequency is
3000~3600Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is the mixture of polyethylene glycol and oleic acid.
The micron order magnetic-particle is the mixture of iron micro mist and iron cobalt nickel alloy micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.2 ~ 0.4mm/ furnace.
Embodiment 14
A kind of ladle resistant to corrosion brick and its application method.The present embodiment except the micron order magnetic-particle be cobalt micro mist,
Outside the mixture of nickel micro mist and magnetic iron ore micro mist, remaining is the same as embodiment 13.
Embodiment 15
A kind of ladle resistant to corrosion brick and its application method.Its technical solution is: with the modification corundum in granules of 59 ~ 62wt%,
The corundum fine powder of 25 ~ 28wt% and the aluminum-spinel fine powder of 10 ~ 13wt% are raw material, are stirred and evenly mixed；The additional raw material 4 ~
The phenol phenolic resin of 5wt%, mixed grind, mechanical pressing keep the temperature 20 ~ 24 hours under the conditions of 160 DEG C ~ 200 DEG C, and ladle is made with resistance to
Corrode brick.
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol
It is 1: (1.6 ~ 2.0): (1.0 ~ 1.4)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, obtains magnetic
Grain dispersion liquid；Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (2.4 ~ 3.0), by corundum in granules at magnetic
1 ~ 3h is impregnated in grain dispersion liquid, the corundum in granules after taking out dipping toasts 12 ~ 15 hours under the conditions of 160 ~ 200 DEG C to get table
The modified corundum in granules in face.
After being ladle working lining with resistant to corrosion brick masonry for the ladle, a line of induction is set outside the steel shell of ladle
Circle, the induction coil: diameter of wire is 10 ~ 25mm；10 ~ 15 circles/rice；Current strength is 150 ~ 210A；Power frequency is
3500~4000Hz.When containing molten steel, starts induction coil and close induction coil after molten steel discharge.
The organic dispersing agent is the mixture in lauryl sodium sulfate and oleic acid.
The micron order magnetic-particle is the mixture of cobalt micro mist and Conjugate ferrite micro mist.
Ladle resistant to corrosion brick is through detecting prepared by the present embodiment: erosion rate is 0.1 ~ 0.3mm/ furnace.
Embodiment 16
A kind of ladle resistant to corrosion brick and its application method.The present embodiment except the micron order magnetic-particle be iron micro mist,
Outside the mixture of cobalt micro mist and nickel micro mist, remaining is the same as embodiment 15.
Present embodiment has following good effect compared with prior art:
Present embodiment utilizes the behavioural characteristic of magnetorheological fluid, and micron order magnetic-particle is added in alumina-magnesia brick, when
When the magnetic-particle on modified corundum in granules surface is entered in slag, the regional area of ladle resistant to corrosion brick and slag contacts interface
Form magnetorheological fluid.Around ladle resistant to corrosion brick apply magnetic field when, suspended particulate along magnetic direction formed chain, column or
Melt in the regional area and stomata at increasingly complex structure, ladle resistant to corrosion brick and slag contacts interface rapidly goes to class
Solid can be substantially reduced the mass transfer rate between slag and ladle resistant to corrosion brick, mitigate slag to ladle resistant to corrosion brick
Erosion and infiltration, extend the service life of ladle resistant to corrosion brick and reduce influence to steel quality.Operation is smelted to complete
Afterwards, the magnetic field around refractory brick is removed, loses magnetism and interacts and chain structure is destroyed between magnetic-particle, system viscosity is anxious
Play decline, and can rapidly go to slurry, and slag will not be sticky in ladle resistant to corrosion brick surface, can be after in next circulation operation
It is continuous to use.Also, the removal that under the influence of a magnetic field, can promote inclusion content in melting steel, achievees the purpose that purifying of steel.
Ladle resistant to corrosion brick is through detecting prepared by present embodiment: erosion rate is 0.1 ~ 0.6mm/ furnace.
Therefore, the ladle of present embodiment preparation resistant to corrosion brick has that purifying of steel, slag resistance be good, anti-erosion
The feature that performance is good and the service life is long.
Claims (8)
1. a kind of ladle resistant to corrosion brick, it is characterised in that: with the modification corundum in granules of 41~62wt%, 25~35wt% it is rigid
The aluminum-spinel fine powder of beautiful fine powder and 10~25wt% are raw material, are stirred and evenly mixed；The phenolic aldehyde of the additional 3~5wt% of raw material
Resin, mixed grind, mechanical pressing keep the temperature 20~24 hours under the conditions of 150~200 DEG C, and ladle resistant to corrosion brick is made；
The preparation method of the modified corundum in granules is: by micron order magnetic-particle: dispersing agent: the mass ratio of dehydrated alcohol is 1:
(1~2): (1~2)；Micron order magnetic-particle is put into dehydrated alcohol with dispersing agent and is dispersed, magnetic-particle dispersion liquid is obtained；
Press corundum in granules again: the mass ratio of magnetic-particle dispersion liquid is 1: (1~3) soaks corundum in granules in magnetic-particle dispersion liquid
1~3h of stain, the corundum in granules after taking out dipping toast 12~24 hours under the conditions of 80~200 DEG C to get the rigid of surface modification
Beautiful particle；
The micron order magnetic-particle is iron micro mist, cobalt micro mist, nickel micro mist, magnetic iron ore micro mist, Ni ferrite micro mist, Conjugate ferrite
Two kinds of mixtures or three kinds of mixtures in micro mist, iron cobalt nickel alloy micro mist；Granularity≤88 μm of the micron order magnetic-particle.
2. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the main component of the corundum in granules and its
Content are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；The granularity of the corundum in granules is 1~5mm.
3. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the main component of the corundum fine powder and its
Content are as follows: Al2O3>=99.0wt%, R2O≤0.12wt%；Granularity≤450 μm of the corundum fine powder.
4. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the main component of the aluminum-spinel and
Its content are as follows: Al2O3>=71.16wt%, MgO >=27.86%, Na2O≤0.01wt%；The granularity of the aluminum-spinel is
0.088~1mm.
5. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the dispersing agent be lauryl sodium sulfate,
One or more of calgon, polyethylene glycol, oleic acid.
6. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the main component of the phenolic resin and its
Content are as follows: water≤5%；Fixed carbon >=78%；Free phenol≤10%.
7. ladle according to claim 1 resistant to corrosion brick, it is characterised in that the main component of the dehydrated alcohol and its
Content are as follows: ethyl alcohol >=99.7wt%, water≤0.3%, methanol≤0.05%, isopropanol≤0.01%.
8. the application method of ladle resistant to corrosion brick according to claim 1, it is characterised in that by the ladle resistant to corrosion
Brick masonry is one induction coil of setting, the induction coil: diameter of wire 10 outside the steel shell of ladle after ladle working lining
~25mm, 10~15 circles/rice, current strength are 50~300A, and power frequency is 150~4000Hz；When containing molten steel, starting induction
Coil closes induction coil after molten steel discharge.
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| CN201610823450.XA CN106396645B (en) | 2016-09-14 | 2016-09-14 | A kind of ladle resistant to corrosion brick and its application method |
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| CN115196947B (en) * | 2022-07-27 | 2023-08-04 | 广西北港新材料有限公司 | Ladle slag line magnesia-alumina carbon brick for stainless steel smelting and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979992A (en) * | 2014-06-09 | 2014-08-13 | 武汉科技大学 | Ladle porous brick and preparation method thereof |
| CN104045354A (en) * | 2014-05-26 | 2014-09-17 | 武汉钢铁(集团)公司 | Regenerated corundum spinel unfired ladle brick |
| CN104177108A (en) * | 2014-09-04 | 2014-12-03 | 湖州永联耐火材料有限公司 | Continuous-casting flow-control refractory material and application thereof |
| CN104478449A (en) * | 2014-12-03 | 2015-04-01 | 武汉钢铁(集团)公司 | Machined carbon-free corundum spinel brick for ladles and preparation method thereof |
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2016
- 2016-09-14 CN CN201610823450.XA patent/CN106396645B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045354A (en) * | 2014-05-26 | 2014-09-17 | 武汉钢铁(集团)公司 | Regenerated corundum spinel unfired ladle brick |
| CN103979992A (en) * | 2014-06-09 | 2014-08-13 | 武汉科技大学 | Ladle porous brick and preparation method thereof |
| CN104177108A (en) * | 2014-09-04 | 2014-12-03 | 湖州永联耐火材料有限公司 | Continuous-casting flow-control refractory material and application thereof |
| CN104478449A (en) * | 2014-12-03 | 2015-04-01 | 武汉钢铁(集团)公司 | Machined carbon-free corundum spinel brick for ladles and preparation method thereof |
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