CN106396709A - High-strength refractory castable and preparation method thereof - Google Patents
High-strength refractory castable and preparation method thereof Download PDFInfo
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- CN106396709A CN106396709A CN201610804311.2A CN201610804311A CN106396709A CN 106396709 A CN106396709 A CN 106396709A CN 201610804311 A CN201610804311 A CN 201610804311A CN 106396709 A CN106396709 A CN 106396709A
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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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- 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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- 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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- 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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- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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- 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
Abstract
The invention relates to high-strength refractory castable and a preparation method thereof. According to the technical scheme, the preparation method includes: preparing alpha-aluminum oxide micro-powder, aluminate cement, water reducing agent and corundum or bauxite of 5 particle size levels according to respective weight, mixing, adding water and silica sol, and stirring to obtain a mixed material, wherein the 5 particle size levels include that the particle size is smaller than 8mm and not smaller than 5mm, the particle size is smaller than 5mm and not smaller than 3mm, the particle size is smaller than 3mm and not smaller than 1mm, the particle size is smaller than 1mm and not smaller than 74 micrometers, and the particle size is smaller than 74 micrometers; pouring the mixed material into a mould, vibrating, maintaining, demoulding, and performing thermal treatment to obtain the high-strength refractory castable. The preparation method has the advantages that the preparation method is simple in process and short in production cycle; the prepared high-strength refractory castable is good in flowing property and high in early strength, medium-temperature strength and high-temperature strength.
Description
Technical field
The invention belongs to technical field of refractory castable.Specifically related to a kind of high-strength fireproof pour material and its preparation side
Method.
Background technology
Refractory material is process industry furnace lining and elevated temperature vessel and the indispensable basic material of part, is widely used in smelting
The high-temperature fields such as gold, glass and cement.Refractory material can be divided into by qualitative refractory material and indefinite form fire resisting according to construction technology
Material, wherein, amorphous refractory due to have the advantages that low production cost, less energy consumption, process is simple and receive and extensively should
With amorphous refractory yield in many countries has accounted for more than the 50% of refractory material total amount.
The compound that unshape refractory is made up of aggregate, substrate, bonding agent and additive, wherein bonding agent be by
Refractory aggregate and substrate is cemented together and the material with some strength, is the important component of castable.The knot commonly used at present
Mixture has phosphate, r-Al2O3, super-fine silicon micro-powder and aluminate cement etc., wherein aluminate cement is due to having early strength
Height, under low temperature, rate of set is fast, and the ability that tolerance high temperature, anti-weak bronsted lowry acids and bases bronsted lowry corrode is strong, has become as in refractories industry not
A kind of hydraulicity bonding agent that can lack, is widely used in refractory material.But during with aluminate cement for bonding agent, resistance to
The maintenance processes of fiery castable are complicated, easily cause castable refractory volume acute variation in aquation-dehydration, reduce fire resisting
The intensity of castable and volume stability, make castable refractory crackle and peeling easily.
For this reason, researcher have developed low cement in succession（1.0%<CaO<2.5%）, ultra-low cement（0.2%<CaO<
1.0%）No cement（CaO<0.2%）Fire resistant pouring material.Wherein, no cementitious binder mainly includes hydrated alumina, silicon
Colloidal sol, Alumina gel etc..Kong Deyu etc.（Kong Deyu, Wang Jiabang, Wei Su, Cheng Benjun, Yang Hui. Nano-meter SiO_22Cladding Al2O3Dense suspension
Body preparation and its gel casting forming. silicate journal, 2004,32 (4): 442-447）Find with colloidal sol as castable refractory
During bonding agent, colloidal sol does not have aquation-dehydration in coacervation process, it is to avoid the volume acute variation of castable refractory, makes
Castable refractory has preferable volume stability and intensity in maintenance processes.But, colloidal sol is produced in the mode of condensing
Adhesion, causes the early strength of castable refractory low；And the rheological property of colloidal sol is inferior to aluminate cement, limits colloidal sol
Popularization and application in castable refractory." a kind of composite bonding low-temperature constructional castable refractory "（CN102491769 B）Patent
Technology, with corundum, Alumina, mullite and carborundum as aggregate, Ludox is bonding agent, and aluminate cement is firming agent, and adds
Refinement powder, retarder and water etc., the castable of preparation low-temperature-resistant construction, but the intensity of its castable is relatively low；A kind of " Ludox
In conjunction with castable "（CN 103496989 A）Patented technology, with flint clay and Alumina as aggregate, Ludox pours for bonding agent preparation
Material feeding, the rupture strength of its 110 DEG C of 24h is only 5.0MPa, is also only 9.0MPa after 1400 DEG C of 24h heat treatments,
Bulk strength is relatively low；" a kind of silicasol-combined corundum matter castable and preparation method thereof "（CN 105218113 A）Patented technology
With Brown Alundum, white fused alumina as aggregate, Ludox is bonding agent, is prepared for corundum pouring material, but the anti-folding of its 110 DEG C of 24h is strong
Spend all in 8.0MPa about.
Content of the invention
It is contemplated that overcoming the deficiencies in the prior art it is therefore an objective to provide a kind of process is simple and with short production cycle high-strength
The preparation method of degree castable refractory；The high-strength fireproof pour material not only good flowing properties prepared with the method, and early stage is strong
Degree, medium temperature intensity and elevated temperature strength are high.
For achieving the above object, the present invention adopts following technical scheme：The raw material of described high-strength fireproof pour material and
Its content is：
Particle diameter is less than 8mm and the corundum more than or equal to 5mm or Alumina 5 ~ 15wt%；
Particle diameter is less than 5mm and the corundum more than or equal to 3mm or Alumina 5 ~ 15wt%；
Particle diameter is less than 3mm and the corundum more than or equal to 1mm or Alumina 5 ~ 15w%；
Particle diameter is less than 1mm and the corundum more than or equal to 74 μm or Alumina 10 ~ 30wt%；
Particle diameter is the corundum or Alumina 10 ~ 30wt% less than 74 μm；
Alpha-alumina micropowder 5 ~ 15wt%；
Aluminate cement 1 ~ 10wt%；
Water reducer 0.1 ~ 0.4wt%；
Water 3 ~ 7wt%；
Ludox 0.1 ~ 10%.
The preparation method of described high-strength fireproof pour material is：By the raw material of described high-strength fireproof pour material and its contain
Amount, first particle diameter is less than 8mm and be less than 5mm more than or equal to the corundum of 5mm or Alumina, particle diameter and the corundum more than or equal to 3mm or
Alumina, particle diameter are less than 3mm and the corundum more than or equal to 1mm or Alumina, particle diameter are less than 1mm and the corundum more than or equal to 74 μm or vitriol
Soil, particle diameter are corundum less than 74 μm or Alumina, Alpha-alumina micropowder, aluminate cement and water reducer mixing, add water and
Ludox, stirring, obtain compound；Then described compound is poured into mould, vibration, maintenance, the demoulding, heat treatment, height is obtained
Strength flame resistant castable.
Described corundum is one or more of plate diamond spar, white fused alumina, sub-white corundum, Brown Alundum；The Al of described corundum2O3
Content>95wt%.
Described Alumina is one or more of high grade bauxite and one-level Alumina；The Al of described Alumina2O3Content>70wt%.
The particle diameter of described Alpha-alumina micropowder is 1 ~ 10 μm, the Al of Alpha-alumina micropowder2O3Content>98wt%.
The main component of described aluminate cement is：Al2O3Content>68wt%；CaO content>29wt%.
Described water reducer is naphthalene water reducer, sulfamate based water reducer, Polyethylene Glycol based water reducer, phosphate inorganic
One of water reducer.
Described thickness of silica gel is 10 ~ 50wt%, and particle diameter is 5 ~ 100nm.
Described system of heat treatment process is：With the ramp of 1 ~ 20 DEG C/min to 1100 ~ 1600 DEG C, it is incubated 2 ~ 4h.
Due to adopting technique scheme, the present invention compared with prior art has the positive effect that：
The present invention only needs, by described raw material and its content mixing, to stir after adding water and Ludox, pours mold vibration into, maintenance,
The demoulding, heat treatment, obtain final product high-strength fireproof pour material, process is simple and with short production cycle.
The present invention combines aluminate cement and the premium properties both Ludox, obtains good fluidity and the high fire resisting of intensity
Castable.This castable is in 110 DEG C × 24h maintenance：Rupture strength is more than 8.1MPa, and compressive resistance is more than 62.2MPa；This cast
Material is through 1100 DEG C × 3h heat treatment：Rupture strength is more than 11.3MPa, and compressive resistance is more than 57.1MPa；This castable is through 1600 DEG C
× 3h heat treatment：Rupture strength is more than 30.2MPa, and compressive resistance is more than 95.8MPa.
The present invention utilizes the combination of aluminate cement aquation and the collective effect of Ludox Coagulating binding, improves castable
Early strength；Under the high temperature conditions, Nano-meter SiO_22Promote the generation of Si-O-Al and Si-O-Ca chemical bond, form stable sky
Between network structure, aggregate and substrate are firmly combined together, in gentle high temperature intensity high.
Therefore, present invention process is simple and with short production cycle；Prepared high-strength fireproof pour material not only mobile performance
Good, and early strength, medium temperature intensity and elevated temperature strength are high.
Brief description
The high-strength fireproof pour material rupture strength curve chart that Fig. 1 is prepared for the present invention；
Fig. 2 is the compressive resistance curve chart of the high-strength fireproof pour material shown in Fig. 1.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description, not the limit to its protection domain
System.
In this specific embodiment：
The Al of described corundum2O3Content>95wt%；The Al of described Alumina2O3Content>70wt%.
The particle diameter of described Alpha-alumina micropowder is 1 ~ 10 μm, the Al of Alpha-alumina micropowder2O3Content>98wt%.
The main component of described aluminate cement is：Al2O3Content>68wt%；CaO content>29wt%.
Described thickness of silica gel is 10 ~ 50wt%, and particle diameter is 5 ~ 100nm.
Described system of heat treatment process is：With the ramp of 1 ~ 20 DEG C/min to 1100 ~ 1600 DEG C, it is incubated 2 ~ 4h.
The preparation method of described high-strength fireproof pour material is：High-strength fireproof pour material as described in each embodiment respectively
Particle diameter is first less than 8mm and the corundum more than or equal to 5mm or Alumina, particle diameter is less than 5mm and is more than or equal to by raw material and its content
Less than 3mm and the corundum more than or equal to 1mm or Alumina, particle diameter are less than 1mm and are more than or equal to 74 μ for the corundum of 3mm or Alumina, particle diameter
The corundum of m or Alumina, particle diameter are the corundum or Alumina, Alpha-alumina micropowder, aluminate cement and water reducer mixing less than 74 μm,
Add water and Ludox, stirring, obtain compound；Then described compound is poured into mould, vibration, maintenance, the demoulding, at heat
Reason, prepared high-strength fireproof pour material.
Repeat no more in embodiment.
Embodiment 1
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the corundum 5 ~ 8wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the corundum 11 ~ 15wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the corundum 5 ~ 8w% more than or equal to 1mm；
Particle diameter is less than 1mm and the corundum 25 ~ 30wt% more than or equal to 74 μm；
Particle diameter is the corundum 25 ~ 30wt% less than 74 μm；
Alpha-alumina micropowder 5 ~ 8wt%；
Aluminate cement 1 ~ 4wt%；
Water reducer 0.1 ~ 0.2wt%；
Water 3 ~ 4.5wt%；
Ludox 0.1 ~ 4%.
Corundum described in the present embodiment is plate diamond spar；Described water reducer is naphthalene water reducer.
Embodiment 2
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 1：
Described corundum is the mixture of white fused alumina and Brown Alundum.
Embodiment 3
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 1：
Described corundum is the mixture of plate diamond spar, white fused alumina and Brown Alundum.
Embodiment 4
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 1：
Described corundum is plate diamond spar, the mixture of white fused alumina, sub-white corundum and Brown Alundum.
Embodiment 5
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the Alumina 5 ~ 8wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the Alumina 11 ~ 15wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the Alumina 5 ~ 8w% more than or equal to 1mm；
Particle diameter is less than 1mm and the Alumina 25 ~ 30wt% more than or equal to 74 μm；
Particle diameter is the Alumina 25 ~ 30wt% less than 74 μm；
Alpha-alumina micropowder 5 ~ 8wt%；
Aluminate cement 1 ~ 4wt%；
Water reducer 0.1 ~ 0.2wt%；
Water 3 ~ 4.5wt%；
Ludox 0.1 ~ 4%.
Described Alumina is high grade bauxite；Described water reducer is naphthalene water reducer.
Embodiment 6
A kind of high-strength fireproof pour material and preparation method thereof.In addition to Alumina, remaining is with embodiment 5：
Described Alumina is the mixture of high grade bauxite and one-level Alumina.
The surveyed intensity of high-strength fireproof pour material prepared by embodiment 1 ~ 6 is：The rupture strength of 110 DEG C × 24h maintenance
For 8.1 ~ 8.5MPa, compressive resistance is 63.1 ~ 62.2MPa；The rupture strength of 1100 DEG C × 3h heat treatment is 11.3 ~ 12.5MPa,
Compressive resistance is 57.1 ~ 59.5MPa；The rupture strength of 1600 DEG C × 3h heat treatment is 30.2 ~ 31.3MPa, and compressive resistance is
95.8~97.9MPa.
Embodiment 7
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the corundum 7 ~ 10wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the corundum 9 ~ 12wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the corundum 7 ~ 10w% more than or equal to 1mm；
Particle diameter is less than 1mm and the corundum 20 ~ 26wt% more than or equal to 74 μm；
Particle diameter is the corundum 20 ~ 26wt% less than 74 μm；
Alpha-alumina micropowder 7 ~ 10wt%；
Aluminate cement 3 ~ 6wt%；
Water reducer 0.15 ~ 0.25wt%；
Water 4 ~ 5.5wt%；
Ludox 3 ~ 6%.
Described corundum is white fused alumina；Described water reducer is sulfamate based water reducer.
Embodiment 8
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 7：
Described corundum is the mixture of sub-white corundum and Brown Alundum.
Embodiment 9
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 7：
Described corundum is the mixture of plate diamond spar, white fused alumina and sub-white corundum.
Embodiment 10
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 7：
Described corundum is plate diamond spar, the mixture of white fused alumina, sub-white corundum and Brown Alundum.
Embodiment 11
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the Alumina 7 ~ 10wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the Alumina 9 ~ 12wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the Alumina 7 ~ 10w% more than or equal to 1mm；
Particle diameter is less than 1mm and the Alumina 20 ~ 26wt% more than or equal to 74 μm；
Particle diameter is the Alumina 20 ~ 26wt% less than 74 μm；
Alpha-alumina micropowder 7 ~ 10wt%；
Aluminate cement 3 ~ 6wt%；
Water reducer 0.15 ~ 0.25wt%；
Water 4 ~ 5.5wt%；
Ludox 3 ~ 6%.
Described Alumina is one-level Alumina；Described water reducer is sulfamate based water reducer.
Embodiment 12
A kind of high-strength fireproof pour material and preparation method thereof.In addition to Alumina, remaining is with embodiment 11：
Described Alumina is the mixture of high grade bauxite and one-level Alumina.
The surveyed intensity of high-strength fireproof pour material prepared by embodiment 7 ~ 12 is：The rupture strength of 110 DEG C × 24h maintenance
For 13.7 ~ 14.9MPa, compressive resistance is 86.6 ~ 88.7MPa；The rupture strength of 1100 DEG C × 3h heat treatment be 23.1 ~
24.5MPa, compressive resistance is 76.5 ~ 78.2MPa；The rupture strength of 1600 DEG C × 3h heat treatment is 46.7 ~ 47.9MPa, pressure
Intensity is 111.4 ~ 116.3MPa.
Embodiment 13
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the corundum 9 ~ 12wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the corundum 7 ~ 10wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the corundum 9 ~ 12w% more than or equal to 1mm；
Particle diameter is less than 1mm and the corundum 15 ~ 21wt% more than or equal to 74 μm；
Particle diameter is the corundum 15 ~ 21wt% less than 74 μm；
Alpha-alumina micropowder 9 ~ 12wt%；
Aluminate cement 5 ~ 8wt%；
Water reducer 0.20 ~ 0.35wt%；
Water 5 ~ 6.5wt%；
Ludox 5 ~ 8%.
Described corundum is Brown Alundum；Described water reducer is Polyethylene Glycol based water reducer.
Embodiment 14
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 13：
Described corundum is the mixture of plate diamond spar and white fused alumina.
Embodiment 15
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 13：
Described corundum is the mixture of plate diamond spar, sub-white corundum and Brown Alundum.
Embodiment 16
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 13：
Described corundum is plate diamond spar, the mixture of white fused alumina, sub-white corundum and Brown Alundum.
Embodiment 17
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the Alumina 9 ~ 12wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the Alumina 7 ~ 10wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the Alumina 9 ~ 12w% more than or equal to 1mm；
Particle diameter is less than 1mm and the Alumina 15 ~ 21wt% more than or equal to 74 μm；
Particle diameter is the Alumina 15 ~ 21wt% less than 74 μm；
Alpha-alumina micropowder 9 ~ 12wt%；
Aluminate cement 5 ~ 8wt%；
Water reducer 0.20 ~ 0.35wt%；
Water 5 ~ 6.5wt%；
Ludox 5 ~ 8%.
Described Alumina is high grade bauxite；Described water reducer is Polyethylene Glycol based water reducer.
Embodiment 18
A kind of high-strength fireproof pour material and preparation method thereof.In addition to Alumina, remaining is with embodiment 17：
Described Alumina is the mixture of high grade bauxite and one-level Alumina.
The surveyed intensity of high-strength fireproof pour material prepared by embodiment 13 ~ 18 is：The anti-folding of 110 DEG C × 24h maintenance is strong
Spend for 14.3 ~ 15.6MPa, compressive resistance is 95.3 ~ 97.5MPa；The rupture strength of 1100 DEG C × 3h heat treatment be 28.5 ~
29.6MPa, compressive resistance is 106.3 ~ 108.6MPa；The rupture strength of 1600 DEG C × 3h heat treatment is 47.2 ~ 48.1MPa, resistance to
Compressive Strength is 140.1 ~ 142.3MPa.
Embodiment 19
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the corundum 11 ~ 15wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the corundum 5 ~ 8wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the corundum 11 ~ 15w% more than or equal to 1mm；
Particle diameter is less than 1mm and the corundum 10 ~ 16wt% more than or equal to 74 μm；
Particle diameter is the corundum 10 ~ 16wt% less than 74 μm；
Alpha-alumina micropowder 11 ~ 15wt%；
Aluminate cement 7 ~ 10wt%；
Water reducer 0.3 ~ 0.4wt%；
Water 6 ~ 7wt%；
Ludox 7 ~ 10%.
Described corundum is sub-white corundum；Described water reducer is phosphate inorganic water reducer.
Embodiment 20
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 19：
Described corundum is the mixture of white fused alumina and sub-white corundum.
Embodiment 21
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 19：
Described corundum is the mixture of white fused alumina, sub-white corundum and Brown Alundum.
Embodiment 22
A kind of high-strength fireproof pour material and preparation method thereof.In addition to corundum, remaining is with embodiment 19：
Described corundum is the mixture in plate diamond spar, white fused alumina, sub-white corundum and Brown Alundum.
Embodiment 23
A kind of high-strength fireproof pour material and preparation method thereof.The raw material of described high-strength fireproof pour material and its content are：
Particle diameter is less than 8mm and the Alumina 11 ~ 15wt% more than or equal to 5mm；
Particle diameter is less than 5mm and the Alumina 5 ~ 8wt% more than or equal to 3mm；
Particle diameter is less than 3mm and the Alumina 11 ~ 15w% more than or equal to 1mm；
Particle diameter is less than 1mm and the Alumina 10 ~ 16wt% more than or equal to 74 μm；
Particle diameter is the Alumina 10 ~ 16wt% less than 74 μm；
Alpha-alumina micropowder 11 ~ 15wt%；
Aluminate cement 7 ~ 10wt%；
Water reducer 0.3 ~ 0.4wt%；
Water 6 ~ 7wt%；
Ludox 7 ~ 10%.
Described Alumina is one-level Alumina；Described water reducer is phosphate inorganic water reducer.
Embodiment 24
A kind of high-strength fireproof pour material and preparation method thereof.In addition to Alumina, remaining is with embodiment 23：
Described Alumina is the mixture of high grade bauxite and one-level Alumina.
The surveyed intensity of high-strength fireproof pour material prepared by embodiment 19 ~ 24 is：The anti-folding of 110 DEG C × 24h maintenance is strong
Spend for 15.3 ~ 16.4MPa, compressive resistance is 102.3 ~ 104.6MPa；The rupture strength of 1100 DEG C × 3h heat treatment be 36.2 ~
37.6MPa, compressive resistance is 121.2 ~ 123.3MPa；The rupture strength of 1600 DEG C × 3h heat treatment is 52.1 ~ 53.4MPa, resistance to
Compressive Strength is 152.3 ~ 154.8MPa.
This specific embodiment compared with prior art has the positive effect that：
This specific embodiment only needs, by described raw material and its content mixing, to stir, pour mould into and shake after adding water and Ludox
Dynamic, maintenance, the demoulding, heat treatment, obtain final product high-strength fireproof pour material, process is simple and with short production cycle.
This specific embodiment combines the premium properties of both aluminate cement and Ludox, obtains good fluidity and intensity
High castable refractory.This castable is in 110 DEG C × 24h maintenance：Rupture strength is more than 8.1MPa, and compressive resistance is more than
62.2MPa；This castable is through 1100 DEG C × 3h heat treatment：Rupture strength is more than 11.3MPa, and compressive resistance is more than 57.1MPa；Should
Castable is through 1600 DEG C × 3h heat treatment：Rupture strength is more than 30.2MPa, and compressive resistance is more than 95.8MPa.
This specific embodiment utilizes the combination of aluminate cement aquation and the collective effect of Ludox Coagulating binding, improves
The early strength of castable；Under the high temperature conditions, Nano-meter SiO_22Promote the generation of Si-O-Al and Si-O-Ca chemical bond, formed
Stable spacial framework, aggregate and substrate are firmly combined together, in gentle high temperature intensity high.
It is raw material that this specific embodiment adopts corundum or Alumina, by regulating and controlling coupling system, that is, improves containing of Ludox
Amount, the prepared rupture strength of castable refractory and compressive resistance significantly improve.Its rupture strength and compressive resistance such as accompanying drawing institute
Show：Fig. 1 is embodiment 2 in this specific embodiment, embodiment 9, embodiment 13 and embodiment 20 preparation high-strength fireproof pour
Material feeding rupture strength curve chart；Fig. 2 is the compressive resistance curve chart corresponding to high-strength fireproof pour material shown in Fig. 1.From Fig. 1
~ Fig. 2 can be seen that：The casting material strength of preparation significantly improves with the increase of Ludox addition.
Therefore, this specific embodiment process is simple and with short production cycle；Prepared high-strength fireproof pour material is not only
Good flowing properties, and early strength, medium temperature intensity and elevated temperature strength are high.
Claims (8)
1. a kind of preparation method of high-strength fireproof pour material it is characterised in that the raw material of described high-strength fireproof pour material and its
Content is：
Particle diameter is less than 8mm and the corundum more than or equal to 5mm or Alumina 5 ~ 15wt%,
Particle diameter is less than 5mm and the corundum more than or equal to 3mm or Alumina 5 ~ 15wt%,
Particle diameter is less than 3mm and the corundum more than or equal to 1mm or Alumina 5 ~ 15w%,
Particle diameter is less than 1mm and the corundum more than or equal to 74 μm or Alumina 10 ~ 30wt%,
Particle diameter is the corundum or Alumina 10 ~ 30wt% less than 74 μm,
Alpha-alumina micropowder 5 ~ 15wt%,
Aluminate cement 1 ~ 10wt%,
Water reducer 0.1 ~ 0.4wt%,
Water 3 ~ 7wt%,
Ludox 0.1 ~ 10%；
The preparation method of described high-strength fireproof pour material is：By raw material and its content of described high-strength fireproof pour material, first
Particle diameter is less than 8mm and be less than 5mm more than or equal to the corundum of 5mm or Alumina, particle diameter and the corundum more than or equal to 3mm or Alumina,
Particle diameter is less than 3mm and the corundum more than or equal to 1mm or Alumina, particle diameter are less than 1mm and the corundum more than or equal to 74 μm or Alumina, grain
Footpath is the corundum or Alumina, Alpha-alumina micropowder, aluminate cement and water reducer mixing less than 74 μm, adds water and silicon is molten
Glue, stirring, obtain compound；Then described compound is poured into mould, vibration, maintenance, the demoulding, heat treatment, prepared high intensity
Castable refractory.
2. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described corundum is tabular
One or more of corundum, white fused alumina, sub-white corundum, Brown Alundum；The Al of described corundum2O3Content>95wt%.
3. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described Alumina is superfine
One or more of Alumina and one-level Alumina；The Al of described Alumina2O3Content>70wt%.
4. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described Alpha-alumina is micro-
The particle diameter of powder is 1 ~ 10 μm, the Al of Alpha-alumina micropowder2O3Content>98wt%.
5. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described aluminate cement
Main component be：Al2O3Content>68wt%；CaO content>29wt%.
6. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described water reducer is naphthalene
One of based water reducer, sulfamate based water reducer, Polyethylene Glycol based water reducer, phosphate inorganic water reducer.
7. the preparation method of high-strength fireproof pour material according to claim 1 is it is characterised in that described thickness of silica gel
For 10 ~ 50wt%, particle diameter is 5 ~ 100nm.
8. a kind of high-strength fireproof pour material is it is characterised in that described high-strength fireproof pour material is according to claim 1 ~ 7
Any one of high-strength fireproof pour material the high-strength fireproof pour material prepared by preparation method.
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| CN114409348A (en) * | 2021-12-31 | 2022-04-29 | 北京纽维逊建筑工程技术有限公司 | High-temperature high-strength heat-resistant concrete and preparation method and application thereof |
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| CN107673768A (en) * | 2017-09-30 | 2018-02-09 | 徐州市伟华炉料有限公司 | A kind of enhanced regeneration iron runner castable |
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| US11492529B2 (en) * | 2018-01-08 | 2022-11-08 | Laticrete International, Inc. | Energy efficient cementitious mortars |
| CN108178646A (en) * | 2018-02-11 | 2018-06-19 | 南京联合荣大工程材料有限责任公司 | Wear-resistant castable for metallurgical residues processing technique and preparation method thereof |
| CN109336627A (en) * | 2018-12-04 | 2019-02-15 | 攀枝花钢城集团有限公司 | Aluminium melting furnace furnace lining castable and its preparation and application |
| CN114180946A (en) * | 2021-12-28 | 2022-03-15 | 江苏正达炉料有限公司 | Preparation method of self-flowing castable for blast furnace iron runner |
| CN114409348A (en) * | 2021-12-31 | 2022-04-29 | 北京纽维逊建筑工程技术有限公司 | High-temperature high-strength heat-resistant concrete and preparation method and application thereof |
| CN115159966A (en) * | 2022-06-30 | 2022-10-11 | 安徽瑞泰新材料科技有限公司 | High-strength refractory castable and preparation method thereof |
| CN115304384A (en) * | 2022-08-09 | 2022-11-08 | 宜兴摩根热陶瓷有限公司 | Alkali-return-preventing aluminum-silicon castable and preparation method thereof |
| CN115304384B (en) * | 2022-08-09 | 2023-10-20 | 宜兴摩根热陶瓷有限公司 | Alkali return prevention aluminum-silicon castable and preparation method thereof |
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Application publication date: 20170215 |