CN109180216A - A kind of production method of carbon-free type ladle working lining prefabricated section - Google Patents
A kind of production method of carbon-free type ladle working lining prefabricated section Download PDFInfo
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- CN109180216A CN109180216A CN201811082242.4A CN201811082242A CN109180216A CN 109180216 A CN109180216 A CN 109180216A CN 201811082242 A CN201811082242 A CN 201811082242A CN 109180216 A CN109180216 A CN 109180216A
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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
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
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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
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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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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Abstract
A kind of production method of carbon-free type ladle working lining prefabricated section, production method the following steps are included: (1) according to the ratio require weigh fine particle materials, be pre-mixed；(2) it requires to prepare coarse particulate material according to the ratio；(3) it stirs, by coarse particulate material and fine particle materials, organic fiber, stirring is added；(4) product mold is hung to shaking platform, opens magnechuck, pug is added in mold by starting vibrating motor；(5) product vibrated is packed into kiln car, and is pushed into curing room and is conserved；(6) it demoulds and toasts, then the product stripping that will meet demoulding requirement is pushed into tunnel oven and toasts；(7) examine qualified product that can be packed and stored as required after toasting；The prefabricated section can introduce organic fiber in prefabricated section, so that dispersion is more evenly, gas cell distribution is more reasonable, and prefabricated section thermal coefficient is effectively reduced, and greatly improves the thermal shock resistance of prefabricated section, while not reducing its erosion performance resistant to high temperatures again.
Description
Technical field
The present invention relates to the prefabricated section brick technical fields of ladle, and it is pre- in particular relate to a kind of carbon-free type ladle working lining
The production method of clamp dog.
Background technique
Ladle is indispensable elevated temperature vessel in STEELMAKING PRODUCTION, it plays access molten steel, carries out double refining to molten steel
Effect.With the increase to the variety steels demand such as mild steel, ultra-low-carbon steel, while requirement of the continuous casting to liquid steel temperature and secondary
Refining rises than constantly, and not requiring nothing more than ladle working lining has good erosion-resisting characteristics and do not cause secondary pollution to molten steel, and
And there is excellent thermal insulation property to ladle.
Domestic large and medium-sized refining ladle working lining mostly uses greatly aluminium-magnesia carbon brick and common ladle prefabricated section brick at present.Due to aluminium
Magnesia carbon brick phosphorus content is high, has carburetion to molten steel, is unfavorable for the smelting of the variety steels such as mild steel, ultra-low-carbon steel, while magnalium
Carbon brick high volume stability is poor, is easy to peel off chip off-falling in use, thus erosion-resisting characteristics is also poor, causes frequently to unpack, build
Packet；Common ladle prefabricated section brick, most domestic ladle prefabricated section brick is all made of ρ-aluminium oxide without cement combination at present,
But because ρ-aluminium oxide have unstability, it is very sensitive to temperature change, stir pug setting time duration when it is short, cause product at
Type is difficult and gas cell distribution is uneven, and thermal coefficient is higher, will lead to that steel shell temperature is excessively high, so as to cause the deformation of creep of steel shell
And cracking, cause its anti-thermal shock and erosion-resisting characteristics bad, meanwhile, it is unfavorable for the smooth implementation of constant temperature constant speed casting technique；It is existing
There is the method that organic fiber proportion is added of technology, function is mainly designed for fire proofing material, cannot be provided equally distributed
Stomata cannot be effectively reduced the thermal coefficient of prefabricated section, improve thermal shock resistance and corrosion resistance.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of carbon-free type ladle working lining prefabricated section, can be prefabricated
Organic fiber is introduced in block, so that dispersion is more evenly, gas cell distribution is more reasonable, and prefabricated section thermal coefficient is effectively reduced, mentions significantly
The thermal shock resistance of high prefabricated section, while not reducing its erosion performance resistant to high temperatures again.
The embodiment of the present invention is achieved in that
A kind of production method of carbon-free type ladle working lining prefabricated section comprising raw material and production method, raw material include plate
Shape corundum in granules, electro-corundum fine powder, Reactive alumina, silicon powder, novel built grind material and organic fiber altogether, production
Method the following steps are included:
(1) fine grained is prepared, first requires to weigh the fine particle materials met the requirements of the standard according to the ratio, be carried out by batch mixer
Premixing, the control of premixing time is in 30~35min；
(2) it according to blender capacity, requires to prepare coarse particulate material according to the ratio, then weighs the pre- of corresponding proportion
Fines is mixed, coarse particulate material is separately filled with fine grained；
(3) it stirs, coarse particulate material and fine particle materials is poured into blender, pass through 5mm sieve in whipping process
The organic fiber of recipe requirements is added, the specification of organic fiber is 4 ± 0.2 ㎜ of length, 6.5 ± 1.5um of diameter, fusing point 230 ± 5
DEG C, the water that weight ratio is 4~6% is stirred and is added, be stirred for pug, wherein the performance requirement of pug: vibration flowability is wanted
Ask control in 180-200mm；
(4) product mold is hung to shaking platform, opens magnechuck, is adsorbed in shaking platform to mold and starts vibration
Satisfactory pug is added in mold by motor in batches, and in 15-20s, charging is completed for each feeding interval time control
Afterwards, vibration frequency is adjusted to 35-40 hertz, until surface is generated without air pocket stops vibration；
(5) product vibrated is packed into kiln car, and is pushed into curing room in 30min and is conserved, curing temperature control
System is at 35 DEG C -40 DEG C, curing time >=2h；
(6) demould and toast, will meet demoulding require product stripping after be packed into dedicated kiln car, then be pushed into tunnel oven into
Row baking, highest baking temperature >=350 DEG C, baking time >=72h；
(7) prefabricated section is made after toasting, qualified product will be examined to be packed and stored as required.
In preferred embodiments of the present invention, the formulation weight ratio of above-mentioned raw materials are as follows: plate diamond spar particle 50~60%, electricity
Molten corundum fine powder 25~35%, Reactive alumina 6~8%, silicon powder 0.25~0.35%, novel built grind material 6 altogether
~8% and organic fiber 0.15~0.25%.
In preferred embodiments of the present invention, the product in above-mentioned (6) generates micro- stomata, and micro- stomata is controlled in 5~8um,
The porosity is controlled 18~22%.
Organic fiber is added in preferred embodiments of the present invention, in above-mentioned (3) to stir using blender, blender uses
Counter-rotating movement keeps organic fiber fully dispersed in mixture.
In preferred embodiments of the present invention, product is vibrated using frequency conversion type bobbing machine in above-mentioned (4), air pocket
Diameter >=1mm.
In preferred embodiments of the present invention, pug vibrates so that micro- even air hole distribution, adjusts vibration frequency in above-mentioned (4)
Rate makes pug that bad stomata be discharged.
Prefabricated section obtained is toasted in preferred embodiments of the present invention, in above-mentioned (6) has porous type micro-pore structure,
And micro- stomata uniformity, micro- even air hole distribution.
In preferred embodiments of the present invention, it includes magnesia, silica and boric acid that above-mentioned novel built grinds material altogether.
In preferred embodiments of the present invention, partial size >=1mm of above-mentioned coarse particulate material, the partial size < of fine particle materials
1mm。
In preferred embodiments of the present invention, the coarse particulate material in fine particle materials premix (2) in above-mentioned (1) is pre-
Mixed exchange sequence is mixed, and (3)~(7) remain unchanged
The beneficial effects of the present invention are:
The present invention introduces a kind of the prefabricated of the carbon-free type of micro- stomata by the way that organic fiber is added in the raw materials for production of prefabricated section
Block obtains micro-pore structure using high-temperature baking, and prefabricated section is discharged during molding using frequency conversion type mode of vibration bad
Stomata；Organic fiber can be introduced in prefabricated section, so that dispersion is more evenly, gas cell distribution is more reasonable, and prefabricated section is effectively reduced
Thermal coefficient greatly improves the thermal shock resistance of prefabricated section, while not reducing its erosion performance resistant to high temperatures again.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the step schematic diagram of the production method of the carbon-free type ladle working lining prefabricated section of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "inner", "outside", "bottom"
Set relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation or position usually put
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term
" first ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
First embodiment
The present embodiment provides a kind of production methods of carbon-free type ladle working lining prefabricated section comprising prefabricated section, prefabricated section
Raw material include that plate diamond spar particle, electro-corundum fine powder, Reactive alumina, silicon powder, novel built grind material, height altogether
Imitate dispersing agent and organic fiber, above raw material ratio by weight is mixed, and prefabricated section uses high temperature to dry in the fabrication process
Roasting to obtain micro-pore structure, bad stomata is discharged using frequency conversion type mode of vibration during molding in prefabricated section.
The production procedure of the production method of the carbon-free type ladle working lining prefabricated section are as follows: preliminary hearing is carried out to material before ingredient,
After material and its granular size meet the requirements, carries out coarse fodder and prepare ingredient and fine powder pre-mixing step, bonding agent is added after mixing
Compounding is ground altogether, and material is entered mold assembling procedure later, then carries out material mixing process to pug, then carry out vibration moulding process,
Prefabricated section is subjected to demoulding, roasting procedure after molding, finally carries out prefabricated section to be packed and stored process.
The step of manufacturing the production method of carbon-free type ladle working lining prefabricated section include:
(1) it first requires to weigh the fine particle materials that 1mm or less is met the requirements of the standard according to the ratio, passes through 0.5m3Taper mixing
Machine is pre-mixed (organic fiber is without premixing), and the control of premixing time is in 30~35min.
(2) it according to blender capacity (120 type blender), requires to prepare 1mm or more coarse particulate material according to the ratio,
Then the premixing fines of corresponding proportion is weighed.Coarse particulate material and fine grained are divided to two barreleds.
(3) it stirs, first coarse particulate material is poured into blender, blender is started and pours into fine particle materials again, is being stirred
The organic fiber of recipe requirements is added by 5mm sieve in the process.5% or so water is added after stirring 2min, is stirred for 3min,
The flow regime that prefabricated section is formed after stirring is in pug shape, wherein the performance requirement of pug: vibration flowability requires control to exist
180-200mm。
(4) satisfactory pug is placed in charging tray, product mold is hung to shaking platform, opens magnechuck, it will
Mold is firmly adsorbed on shaking platform, starts vibrating motor, secondary in three batches that pug is added in mold, each feeding interval
Time controls in 15-20s.Vibration frequency is adjusted according to pug stirring situation in vibration processes, avoids the generation of bad stomata.Add
After the completion of material, vibration frequency is adjusted to 35-40 hertz, then until surface can stop vibrating without air pocket generation.
(5) product vibrated is packed into kiln car, and is pushed into curing room in 30min and is conserved, curing temperature control
System is at 35 DEG C -40 DEG C, curing time >=2h.
(6) it demoulds and toasts, after meeting the product stripping that demoulding requires, be packed into dedicated kiln car, be then pushed into tunnel oven
It is toasted, highest baking temperature >=350 DEG C, baking time >=72h.
(7) examine qualified product that can be packed and stored as required after toasting.
The weight ratio of raw material is respectively as follows: plate diamond spar particle 50~60%, electro-corundum fine powder 25~35%, active oxidation
Aluminium micro mist 6~8%, silicon powder 0.25~0.35%, novel built grind material 6~8% and organic fiber 0.15~0.25% altogether.
It is mixed in the embodiment in the ratio in following table 1:
The specification and quantity of 1 raw material of table
| Serial number | Title material | Specification (mm) | Quantity (kg) |
| 1 | Plate diamond spar | 15-10 | 80 |
| 2 | Plate diamond spar | 5-10 | 120 |
| 3 | Plate diamond spar | 5-3 | 170 |
| 4 | Plate diamond spar | 3-1 | 160 |
| 5 | Fused white corundum | 1-0 | 170 |
| 6 | Fused white corundum | ≤0.074 | 157 |
| 7 | α-Al2O3 | Kaifeng | 70 |
| 8 | Novel built grinds material altogether | ≤1 | 70 |
| 9 | Silicon powder | ≤1 | 3 |
| It is additional | Organic fiber | 3.8-4.2 | 2 |
In the production process of prefabricated section, the use of raw material does not introduce carbon, and prefabricated section not will lead to steel in use
Water carburetting, thus the use of the variety steels such as mild steel preferably, ultra-low-carbon steel；Secondly appropriate organic fiber is added in formula
(4 ㎜ of length, deviation ± 0.2 ㎜, 5-8um of diameter, 230 ± 5 DEG C of fusing point) obtains reasonable micro- stomata knot after high-temperature baking
Structure, reasonable micro-pore structure are improving the porosity, and wherein stomata control is controlled in 5~8um, the porosity in 20% ± 2% (gas
Porosity is also known as voidage, the porosity of object or a kind of measurement of compactness extent, with pore volume in object of the total volume hundred
Fraction representation), while reducing prefabricated section thermal coefficient, improves the thermal shock resistance of product and do not reduce its and resistant to high temperatures invade
Corrosion energy.
Formula introduces magnesium silicon compounding and grinds bonding agent altogether, in formula not in such a way that ρ-aluminium oxide combines, but passes through
It introduces a kind of novel built and grinds material altogether as bonding agent, bulk composition is silica and magnesia, and novel built grinds material altogether
Material further includes boric acid, and boric acid is used to adjust the molding time of prefabricated section, adds appropriate boric acid, obtain good workability,
Adjustment workability can be imitated according to temperature conditions, mixing time and molding time are adjusted, when pug has adequately stirring, vibration
Between, make organic fiber dispersion more evenly, gas cell distribution is more reasonable.
To guarantee the uniformity dispersed in whipping process of organic fiber, in the production process of prefabricated section, to blender
It is transformed, makes external cylinder and internal stirring structure that can carry out counter-rotating movement, to enhance the dispersion of organic fiber
Effect, more evenly, air hole structure is more reasonable for the micro- stomata dispersion obtained after toasting prefabricated section.We are in forming process simultaneously
Bad stomata can sufficiently be excluded, to further be promoted pre- by adjusting vibration frequency using variable-frequency vibration moulding mode
The erosion-resisting characteristics and thermal shock performance of clamp dog；Temperature is referred to as the lifeline made steel, and is further increasing large and medium-sized refining ladle
Carbon content in service life and reduction molten steel, while sufficiently meeting Clean Steel Smelting and variety steel, by adjusting prefabricated section
Micro- stomata mechanism and distribution improve anti-thermal shock and erosion-resisting characteristics, and obtain lower thermal coefficient, to substantially reduce steel
Water temperature drop rate, the temperature control of high-temperature baking is at 35~40 DEG C, baking time >=72h；Using variable with magnechuck
The vibratory equipment of frequency forms, and the frequency of frequency conversion type vibration is 35~40 hertz, and pug can obtain good mobile performance, be vibrated to
No air pocket generates, and the diameter of air pocket is greater than 1mm, and pug is not easy to be layered at this time, and the bad stomata of generation is few, product thermal shock
Stability is greatly improved.
This technology invention product is made steel in wine steel two and is promoted the use of, and specific effect is as follows:
2 wine steel of table, two steel mill Contrast on effect
Second embodiment
The present embodiment provides a kind of production methods of carbon-free type ladle working lining prefabricated section comprising prefabricated section, prefabricated section
Raw material include that plate diamond spar particle, electro-corundum fine powder, Reactive alumina, silicon powder, novel built grind material, height altogether
Imitate dispersing agent and organic fiber, above raw material ratio by weight is mixed, and prefabricated section uses high temperature to dry in the fabrication process
Roasting to obtain micro-pore structure, bad stomata is discharged using frequency conversion type mode of vibration during molding in prefabricated section.
The prefabricated section production procedure of the embodiment is identical with the step of manufacturing prefabricated section, the difference is that raw material
The effect for using and obtaining.
The weight ratio of raw material is respectively as follows: plate diamond spar particle 50~60%, electro-corundum fine powder 25~35%, active oxidation
Aluminium micro mist 6~8%, silicon powder 0.25~0.35%, novel built grind material 6~8% and organic fiber 0.15~0.25% altogether.
It is mixed in the embodiment in the ratio in following table 1:
The specification and quantity of 3 raw material of table
| Serial number | Title material | Specification (mm) | Quantity (kg) |
| 1 | Plate diamond spar | 15-10 | 70 |
| 2 | Plate diamond spar | 5-10 | 120 |
| 3 | Plate diamond spar | 5-2 | 200 |
| 4 | Plate diamond spar | 2-1 | 120 |
| 5 | Fused white corundum | 1-0 | 160 |
| 6 | Fused white corundum | ≤0.074 | 180 |
| 7 | α-Al2O3 | Kaifeng | 70 |
| 8 | Novel built grinds material altogether | ≤1 | 75 |
| 9 | Silicon powder | ≤1 | 3 |
| It is additional | Organic fiber | 4.2-3.8 | 2.5 |
In the production process of prefabricated section, the use of raw material does not introduce carbon, and prefabricated section not will lead to steel in use
Water carburetting, thus the use of the variety steels such as mild steel preferably, ultra-low-carbon steel；Secondly appropriate organic fiber is added in formula
(4 ㎜ of length, deviation ± 0.2 ㎜, 5-8um of diameter, 230 ± 5 DEG C of fusing point) obtains reasonable micro- stomata knot after high-temperature baking
Structure, reasonable micro-pore structure are improving the porosity, and wherein stomata control is controlled in 6~8um, the porosity in 20% or so (gas
Porosity is also known as voidage, the porosity of object or a kind of measurement of compactness extent, with pore volume in object of the total volume hundred
Fraction representation), while reducing prefabricated section thermal coefficient, improves the thermal shock resistance of product and do not reduce its and resistant to high temperatures invade
Corrosion energy.
Formula introduces magnesium silicon compounding and grinds bonding agent altogether, and bulk composition is silica and magnesia, and novel built grinds material altogether
Material further includes boric acid, and boric acid is used to adjust the molding time of prefabricated section, and adjustment workability can be imitated according to temperature conditions, and adjusting is stirred
It mixes time and molding time, pug has adequately stirring, time of vibration, makes organic fiber dispersion more evenly, gas cell distribution is more closed
Reason；We use variable-frequency vibration moulding mode in forming process simultaneously, by adjusting vibration frequency, can sufficiently exclude not
Good stomata, to further promote the erosion-resisting characteristics and thermal shock performance of prefabricated section；The temperature of high-temperature baking is controlled 35~40
DEG C, baking time >=72h；It is formed using the variable-frequency vibratory equipment with magnechuck, the frequency of frequency conversion type vibration is 35
~40 hertz, pug can obtain good mobile performance, be vibrated to no air pocket and generate, and the diameter of air pocket is greater than 1mm, and this
When pug be not easy to be layered, the bad stomata of generation is few, and product thermal shock resistance is greatly improved.
This technology invention product is made steel in wine steel two and is promoted the use of, and specific effect is as follows:
4 wine steel of table, two steel mill Contrast on effect
The advantages of present example are as follows:
(1) not carbon containing in product formula, because secondary pollution will not be caused to molten steel without leading to molten steel recarburization；
(2) product formula introduces organic fiber, and toasting prefabricated section obtained has uniform micro-pore structure, and divides
Cloth is uniform, and thermal coefficient is low, reduces the deformation of ladle involucrum, reduces molten steel temperature drop in ladle, has preferable erosion-resisting characteristics；
(3) product uses variable-frequency mode of vibration, and even air hole distribution, bad stomata is less, thus thermal shock is stablized,
Erosion-resisting characteristics and thermal shock performance are further promoted without chip off-falling is peeled off substantially in use process；
(4) long service life, cost performance is reasonable, reduces ton steel cost；
(5) the cold repair frequency is reduced, baking energy consumption is substantially reduced.
Present example introduces a kind of carbon-free type of micro- stomata by the way that organic fiber is added in the raw materials for production of prefabricated section
Prefabricated section obtains micro-pore structure using high-temperature baking, and prefabricated section is discharged during molding using frequency conversion type mode of vibration
Bad stomata；Organic fiber can be introduced in prefabricated section, so that dispersion is more evenly, gas cell distribution is more reasonable, is effectively reduced pre-
Clamp dog thermal coefficient greatly improves the thermal shock resistance of prefabricated section, while not reducing its erosion performance resistant to high temperatures again.
In conclusion the present invention can introduce organic fiber in prefabricated section, so that dispersion is more evenly, gas cell distribution is more closed
Reason, is effectively reduced prefabricated section thermal coefficient, greatly improves the thermal shock resistance of prefabricated section, while not reducing its erosion resistant to high temperatures again
Performance.
Present specification describes the example of the embodiment of the present invention, it is not meant to that these embodiments illustrate and describe this
All possible forms of invention.It should be understood that the embodiment in specification can be implemented with a variety of alternative forms.Attached drawing is without in proportion
It draws；Some features can be zoomed in or out to show the details of particular elements.Disclosed specific structure and function details should not
Make limited interpretation, only those skilled in the art is instructed to implement representative basis of the invention in a variety of forms.In the art
It should be understood to the one skilled in the art that the multiple features illustrated and described with reference to either figure can with said in one or more of the other attached drawing
Bright feature combination is to form the embodiment for not yet explicitly illustrating or describing.The assemblage characteristic of explanation provides the generation for being used for typical case
Table embodiment.It is answered however, can according to need with the multiple combinations of the consistent feature of the teachings of the present invention and modification for specific
With or implement.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of production method of carbon-free type ladle working lining prefabricated section, which is characterized in that it includes raw material and production method, institute
State raw material include plate diamond spar particle, electro-corundum fine powder, Reactive alumina, silicon powder, novel built grind altogether material and
Organic fiber, the production method the following steps are included:
(1) fine grained is prepared, first requires to weigh the fine particle materials met the requirements of the standard according to the ratio, be premixed by batch mixer
It closes, the control of premixing time is in 30~35min；
(2) it according to blender capacity, requires to prepare coarse particulate material according to the ratio, then weighs the premixing of corresponding proportion
Fines, coarse particulate material are separately filled with fine grained；
(3) it stirs, coarse particulate material and fine particle materials is poured into blender, are added in whipping process by 5mm sieve
The organic fiber of recipe requirements, the specification of organic fiber are 4 ± 0.2 ㎜ of length, 6.5 ± 1.5um of diameter, 230 ± 5 DEG C of fusing point,
Stir and be added the water that weight ratio is 4~6%, be stirred for pug, wherein the performance requirement of pug: vibration flowability requires control
System is in 180-200mm；
(4) product mold is hung to shaking platform, opens magnechuck, be adsorbed in shaking platform to mold and start vibration electricity
Satisfactory pug is added in mold by machine in batches, and in 15-20s, charging is completed for each feeding interval time control
Afterwards, vibration frequency is adjusted to 35-40 hertz, until surface is generated without air pocket stops vibration；
(5) product vibrated is packed into kiln car, and is pushed into curing room in 30min and is conserved, curing temperature control exists
35 DEG C -40 DEG C, curing time >=2h；
(6) it demoulds and toasts, be packed into dedicated kiln car after the product stripping that demoulding requires being met, be then pushed into tunnel oven and dried
It is roasting, highest baking temperature >=350 DEG C, baking time >=72h；
(7) prefabricated section is made after toasting, qualified product will be examined to be packed and stored as required.
2. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that the raw material
Formulation weight ratio are as follows: plate diamond spar particle 50~60%, electro-corundum fine powder 25~35%, Reactive alumina 6~
8%, silicon powder 0.25~0.35%, novel built grind material 6~8% and organic fiber 0.15~0.25% altogether.
3. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that (6)
In product generate micro- stomata, in 5~8um, the porosity is controlled 18~22% for micro- stomata control.
4. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that (3)
Middle addition organic fiber is stirred using blender, and the blender fills organic fiber in mixture using counter-rotating movement
Dispersion.
5. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that (4)
It is middle that product is vibrated using frequency conversion type bobbing machine, diameter >=1mm of the air pocket.
6. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that (4)
Middle pug vibrates so that micro- even air hole distribution, adjusting vibration frequency makes pug that bad stomata be discharged.
7. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that (6)
Prefabricated section made from middle baking has porous type micro-pore structure, and micro- stomata uniformity, micro- even air hole distribution.
8. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that described novel
Mill material includes magnesia, silica and boric acid to compounding altogether.
9. the production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that described thick
Partial size >=the 1mm, the partial size < 1mm of the fine particle materials of grain material.
The production method of carbon-free type ladle working lining prefabricated section according to claim 1, which is characterized in that in (1)
Fine particle materials premix (2) in coarse particulate material premix exchange sequence mixed, (3)~(7) remain unchanged.
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| CN201811082242.4A CN109180216A (en) | 2018-09-17 | 2018-09-17 | A kind of production method of carbon-free type ladle working lining prefabricated section |
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| CN201811082242.4A CN109180216A (en) | 2018-09-17 | 2018-09-17 | A kind of production method of carbon-free type ladle working lining prefabricated section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116396101A (en) * | 2023-04-24 | 2023-07-07 | 大冶有色金属有限责任公司 | Method for maintaining reduction tube of regenerated copper refining reverberatory furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193370A (en) * | 2014-08-27 | 2014-12-10 | 北京利尔高温材料股份有限公司 | Preparation method of steel ladle carbon-free precast block |
-
2018
- 2018-09-17 CN CN201811082242.4A patent/CN109180216A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193370A (en) * | 2014-08-27 | 2014-12-10 | 北京利尔高温材料股份有限公司 | Preparation method of steel ladle carbon-free precast block |
Non-Patent Citations (2)
| Title |
|---|
| 厉衡隆，顾松青: "《铝冶炼生产技术手册 上》", 31 July 2011, 冶金工业出版社 * |
| 袁林，陈雪峰，刘锡俊: "《绿色耐火材料》", 31 January 2015, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116396101A (en) * | 2023-04-24 | 2023-07-07 | 大冶有色金属有限责任公司 | Method for maintaining reduction tube of regenerated copper refining reverberatory furnace |
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