CN105622122A - Ultramicro kyanite refractory castable and application thereof - Google Patents

Ultramicro kyanite refractory castable and application thereof Download PDF

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Publication number
CN105622122A
CN105622122A CN201610072456.8A CN201610072456A CN105622122A CN 105622122 A CN105622122 A CN 105622122A CN 201610072456 A CN201610072456 A CN 201610072456A CN 105622122 A CN105622122 A CN 105622122A
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kyanite
granularity
aggregate
ultra micro
alumina
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CN105622122B (en
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宋学斌
李连地
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Jiangsu Ruifuda New Material Co Ltd
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Jiangsu Ruifuda New Material Co Ltd
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Abstract

The invention belongs to the field of refractory materials and discloses an ultramicro kyanite refractory castable. The ultramicro kyanite refractory castable comprises, by weight, 47-80 parts of high alumina bauxite aggregate, 10-40% of alumina powder, 0.05-3% of admixture and 3-10% of ultramicro kyanite, content of alumina in the ultramicro kyanite is greater than or equal to 50%, kyanite phase is greater than or equal to 70%, and granularity is less than or equal to 10 um. Through premixing technology, ultramicro kyanite is mixed with alpha-Al2O3 and sub-white corundum powder, so that ultramicro kyanite can be uniformly dispersed in a matrix; ultramicro kyanite plays a role in offsetting structural contraction caused by high-temperature contraction of alumina or high-temperature decomposition of aluminum corrosion resisting agent through structural expansion of highly-uniformly-dispersed kyanite at 1250 DEG C. Ultramicro kyanite is used, and when grain diameter is reduced to 5 um, size expansion rate of ultramicro kyanite is lower than 3%; kyanite has high aluminum corrosion resistance, so that when same water adding quantity and fluidity are maintained, aluminum corrosion resistance of refractory lining materials can be improved greatly.

Description

A kind of ultra micro kyanite refractory casting and application thereof
Technical field
The invention belongs to fire resisting material field, particularly relate to a kind of ultra micro kyanite refractory casting material and application thereof.
Background technology
Aluminum and aluminum alloy melt casting equipment liner High-Alumina castable refractory are to synthesize by certain ratio with high-alumina refractory aggregate, alumina powder, conclusion agent and additive. It has the characteristics such as high-temperature behavior is good, refractoriness is high, wear-resistant, is widely used in the industries such as five metals, smelting, chemical industry, non-ferrous metal. At present, the production method of High-Alumina castable refractory mainly adopts bauxite chamotte, alumina powder, silica powder and suitable bonding agent mix to form. Though owing to bauxite chamotte is through burning till, but reaching far away sintering equilibrium state, in thermal histories afterwards, still have never equilibrium state to the trend of final equilibrium state transition, bulk density declines, and this can cause bigger volume contraction, causes the cracking of castable refractory.
Additionally, due to refractory lining material is had very strong erosion and penetrating power by the aluminum of high-temperature fusion and molten aluminium alloy, therefore, adding aluminum-resistant aggressive agent in High-Alumina castable refractory has been widespread practice, but currently used aluminum-resistant aggressive agent will be decomposed at 800��1300 DEG C, on the one hand, along with the rising using temperature, make its aluminum-resistant erosiveness decline or disappear, on the other hand, owing to material is decomposed, cause that overall structure is loosened, decrease in strength, cracking can be more serious. This directly affects the service life of castable refractory.
Summary of the invention
It is an object of the invention to overcome prior art to there is the defect that castable refractory easily ftractures, it is provided that a kind of ultra micro kyanite refractory casting material and application thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of ultra micro kyanite refractory casting material, its component and weight fraction include alumine aggregate 47��80%, alumina powder 10��40%, additive 0.05��3% and ultra micro kyanite 3��10%, described ultra micro kyanite is alumina content >=50%, kyanite phase >=70%, granularity��10 ��m.
Further, aluminum weight percentage >=75% in described alumine aggregate, its grain size distribution is composed as follows: the alumine aggregate that granularity is 3��5mm accounts for the 15��40% of alumine aggregate and alumina powder quality sum, the alumine aggregate that granularity is 1��3mm accounts for the 10��40% of blast furnace Alumina aggregate and alumina powder quality sum, and the alumine aggregate that granularity is 0��1mm accounts for the 0��30% of blast furnace Alumina aggregate and alumina powder quality sum.
As preferably, the alumine aggregate that granularity is 3��5mm accounts for the 30��40% of alumine aggregate and alumina powder quality sum, the alumine aggregate that granularity is 1��3mm accounts for the 20��30% of blast furnace Alumina aggregate and alumina powder quality sum, and the alumine aggregate that granularity is 0��1mm accounts for the 10��20% of blast furnace Alumina aggregate and alumina powder quality sum.
Further, described alumina powder is composed as follows: Al2O3Weight/mass percentage composition >=99%, the ��-Al of granularity��320 order2O3Account for the 1��10% of alumine aggregate and alumina powder quality sum; Al2O3Weight/mass percentage composition >=98%, the sub-white corundum powder of granularity��320 order accounts for the 3��8% of alumine aggregate and alumina powder quality sum; Al2O3The aluminous cement of weight/mass percentage composition >=50% accounts for the 5��20% of alumine aggregate and alumina powder quality sum; BaSO4Weight/mass percentage composition >=95%, the barium sulfate of granularity��200 order accounts for the 2��7% of alumine aggregate and alumina powder quality sum.
As preferably, described alumina powder is composed as follows: Al2O3Weight/mass percentage composition >=99%, the ��-Al of granularity��320 order2O3Account for the 6��8% of alumine aggregate and alumina powder quality sum; Al2O3Weight/mass percentage composition >=98%, the sub-white corundum powder of granularity��320 order accounts for the 4��5% of alumine aggregate and alumina powder quality sum; Al2O3The aluminous cement of weight/mass percentage composition >=50% accounts for the 5��7% of alumine aggregate and alumina powder quality sum; BaSO4Weight/mass percentage composition >=95%, the barium sulfate of granularity��200 order accounts for the 5��7% of alumine aggregate and alumina powder quality sum.
As preferably, described additive is one or more in sodium tripolyphosphate, sodium hexametaphosphate, citric acid, sodium aluminate, naphthalene water reducer, sodium pyrophosphate, sodium tetrapolyphosphate, sodium silicate.
As preferably, described ultra micro kyanite granularity is 5 ��m.
Upper described ultra micro kyanite refractory casting material is used for the application of the making of prefabricated component, and step is as follows:
(1) by ultra micro kyanite and ��-Al2O3 and sub-white corundum powder in homogenizer blended, it is thus achieved that homodisperse premixed powder, then mix with other raw materials again;
(2) in blender, the water of joined castable and castable weight 3��6% is mixed, mix the fluidity that cast is required thoroughly;
(3) material being stirred is placed in mould pour into a mould, vibration shaping;
(4) demoulding maintenance after curing in the mold;
(5) enter stove and carry out fire by prefabricated component fire temperature increasing schedule;
(6) come out of the stove, check, pack, be transported to user scene, installation, come into operation after baker.
As preferably, the described curing in the mold time is 24h, and demoulding curing time is more than 72h.
Above-mentioned ultra micro kyanite refractory casting material is used for the application of cast-in-site refractory lining, and step is as follows:
(1) by ultra micro kyanite and ��-Al2O3 and sub-white corundum powder in homogenizer blended, it is thus achieved that homodisperse premixed powder, then mix with other raw materials again;
(2) in blender, the water of joined castable and castable weight 3��6% is mixed, mix the fluidity that cast is required thoroughly;
(3) material being stirred is placed in mould pour into a mould, vibration shaping;
(4) curing in the mold, the demoulding more than maintenance 72h, by baker temperature increasing schedule fire, then come into operation.
Beneficial effect: it is an object of the invention to provide a kind of ultra micro kyanite refractory casting material, on the one hand, its effect is that the structure occurred after 1250 DEG C by kyanite expands the structure both shrinks offset because Alumina high-temperature shrinkage or aluminum-resistant aggressive agent pyrolytic cause. But, if using common kyanite particulate material or fine powder, owing to kyanite at high temperature phase-change product is mullite and high silica glass phase, simultaneously with the volumetric expansion of 12��16%, but general this phase transition process is incomplete, can only achieve about the 80% of theoretical value. Additionally, finely divided corundum phase in high-alumina refractory castable, heat with kyanite and have secondary mullite process between phase-change product high silica glass phase, this process is also attended by the expansion of suitable volume, although in this process, forms continuous print mullite skeleton in the structure of high-alumina refractory castable, can improve high temperature crystallization mutually between directly in conjunction with degree, but so huge volumetric expansion, undoubtedly can the structure of heavy damage refractory lining, reduce its high-temperature behavior. Therefore, this invention employs ultra micro kyanite, its volumetric expansion < 3%, pass through technology for premixing, by blended with ��-Al2O3 and sub-white corundum powder for ultra micro kyanite, can be dispersed in substrate, reduce the short texture causing high-temperature expansion to be formed because kyanite assembles, simultaneously, the specific surface area of ultra micro kyanite is big, and contact area equal to the finely divided corundum in castable refractory is big, and mullitization reaction is fully, make mullite skeleton continuous distribution in whole inner lining structure, it reduce the structural deterioration because volumetric expansion causes more greatly.
On the other hand, the aluminum-resistant erosion performance of kyanite is higher than silicon oxide, mullite, Alumina, plate diamond spar, therefore by ultra micro kyanite Substitute For Partial fine silica powder, calcined bauxite in powder, plate diamond spar powder, mullite powder, it is possible to improve the aluminum-resistant erosion performance of refractory lining material. Wherein, although fine silica powder serves very crucial effect in a lot of low cement or ultra-low cement, but this has but sacrificed a lot of high-temperature behavior, if carrying out replacement of silicon dioxide micropowder with ultra micro kyanite, when keeping identical amount of water and mobility, the aluminum-resistant erosion performance of refractory lining material can be greatly improved.
Detailed description of the invention
Embodiment 1
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 30% is the alumine aggregate of 3��5mm; The granularity of 12% is the alumine aggregate of 1��3mm; The granularity of 21% is the alumine aggregate of 0��1mm; The ultra micro kyanite of 5% (5 ��m, alumina content >=50%, kyanite phase >=70%, lower with), the ��-Al2O3 of 8%; The sub-white corundum powder of 7%; The aluminous cement of 12%; The barium sulfate of 4.95%; The sodium hexameta phosphate of 0.05%. (wherein aluminum weight percentage >=75% in alumine aggregate; ��-Al2O3Middle Al2O3Weight/mass percentage composition >=99%, granularity��320 order; L in sub-white corundum powder2O3Weight/mass percentage composition >=98%, granularity��320 order; Al in aluminous cement2O3Weight/mass percentage composition >=50%; BaSO in barium sulfate4Weight/mass percentage composition >=95%, granularity��200 order, lower same)
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.06-3.17g/cm3(GB/T2999-2002), compressive resistance is 95-103MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.00-3.14g/cm3(GB/T2999-2002), compressive resistance is that 155-160MPa (GB/T5072-2008), permanent line are changed to 0.6% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 25 times (YB/T376.3-2004).
Embodiment 2
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 40% is the alumine aggregate of 3��5mm; The granularity of 10% is the alumine aggregate of 1��3mm; The granularity of 30% is the alumine aggregate of 0��1mm; The ultra micro kyanite (10 ��m) of 3%, the ��-Al2O3 of 1%; The sub-white corundum powder of 3%; The aluminous cement of 5%; The barium sulfate of 7%; The sodium hexameta phosphate of 1%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.00-3.13g/cm3(GB/T2999-2002), compressive resistance is 90-99MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.98-3.13g/cm3(GB/T2999-2002), compressive resistance is that 150-160MPa (GB/T5072-2008), permanent line are changed to 1.1% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 19 times (YB/T376.3-2004).
Embodiment 3
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 17% is the alumine aggregate of 3��5mm; The granularity of 35% is the alumine aggregate of 1��3mm; The granularity of 11% is the alumine aggregate of 0��1mm; The ultra micro kyanite (8 ��m) of 10%, the ��-Al2O3 of 11%; The sub-white corundum powder of 4%; The aluminous cement of 7%; The barium sulfate of 2%; The sodium aluminate of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.10-3.20g/cm3(GB/T2999-2002), compressive resistance is 98-106MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.05-3.14g/cm3(GB/T2999-2002), compressive resistance is that 165-170MPa (GB/T5072-2008), permanent line are changed to 1.0% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 22 times (YB/T376.3-2004).
Embodiment 4
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 15% is the alumine aggregate of 3��5mm; The granularity of 26% is the alumine aggregate of 1��3mm; The granularity of 8% is the alumine aggregate of 0��1mm; The ultra micro kyanite (10 ��m) of 10%, the ��-Al2O3 of 9%; The sub-white corundum powder of 7%; The aluminous cement of 18%; The barium sulfate of 4%; The sodium hexameta phosphate of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 2.97-3.10g/cm3(GB/T2999-2002), compressive resistance is 89-99MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.96-3.06g/cm3(GB/T2999-2002), compressive resistance is that 151-155MPa (GB/T5072-2008), permanent line are changed to 0.9% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 18 times (YB/T376.3-2004).
Embodiment 5
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 30% is the alumine aggregate of 3��5mm; The granularity of 30% is the alumine aggregate of 1��3mm; The granularity of 17% is the alumine aggregate of 0��1mm; The ultra micro kyanite (5 ��m) of 10%, the ��-Al2O3 of 1%; The sub-white corundum powder of 2.7%; The aluminous cement of 4.5%; The barium sulfate of 1.8%; The sodium silicate of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.10-3.20g/cm3(GB/T2999-2002), compressive resistance is 110-120MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.05-3.16g/cm3(GB/T2999-2002), compressive resistance is that 155-165MPa (GB/T5072-2008), permanent line are changed to 0.7% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 26 times (YB/T376.3-2004).
Embodiment 6
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 23% is the alumine aggregate of 3��5mm; The granularity of 32% is the alumine aggregate of 1��3mm; The granularity of 20% is the alumine aggregate of 0��1mm; The ultra micro kyanite (6 ��m) of 9%, the ��-Al2O3 of 1%; The sub-white corundum powder of 4%; The aluminous cement of 6%; The barium sulfate of 2%; The sodium hexameta phosphate of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.06-3.17g/cm3(GB/T2999-2002), compressive resistance is 95-103MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.00-3.14g/cm3(GB/T2999-2002), compressive resistance is that 155-160MPa (GB/T5072-2008), permanent line are changed to 0.6% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 20 times (YB/T376.3-2004).
Embodiment 7
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 20% is the alumine aggregate of 3��5mm; The granularity of 35% is the alumine aggregate of 1��3mm; The granularity of 0% is the alumine aggregate of 0��1mm; The ultra micro kyanite (8 ��m) of 4%, the ��-Al2O3 of 6%; The sub-white corundum powder of 8%; The aluminous cement of 18%; The barium sulfate of 6%; The citric acid of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.05-3.12g/cm3(GB/T2999-2002), compressive resistance is 80-100MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.00-3.10g/cm3(GB/T2999-2002), compressive resistance is that 110-120MPa (GB/T5072-2008), permanent line are changed to 1.0% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 16 times (YB/T376.3-2004).
Embodiment 8
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 13% is the alumine aggregate of 3��5mm; The granularity of 30% is the alumine aggregate of 1��3mm; The granularity of 4% is the alumine aggregate of 0��1mm; The ultra micro kyanite (10 ��m) of 10%, the ��-Al2O3 of 9%; The sub-white corundum powder of 7%; The aluminous cement of 18%; The barium sulfate of 6%; The sodium pyrophosphate of 3%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.00-3.05g/cm3(GB/T2999-2002), compressive resistance is 90-110MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.90-3.00g/cm3(GB/T2999-2002), compressive resistance is that 152-160MPa (GB/T5072-2008), permanent line are changed to 1.1% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 21 times (YB/T376.3-2004).
Embodiment 9
A kind of ultra micro kyanite refractory casting material, raw material and the content of this ultra micro kyanite refractory casting material is: the granularity of 30% is the alumine aggregate of 3��5mm; The granularity of 18% is the alumine aggregate of 1��3mm; The granularity of 4% is the alumine aggregate of 0��1mm; The ultra micro kyanite (9 ��m) of 6%, the ��-Al2O3 of 9%; The sub-white corundum powder of 7%; The aluminous cement of 18%; The barium sulfate of 6%; The sodium tetrapolyphosphate of 2%.
By ultra micro kyanite and micron-sized fine powder in ��-Al2O3 and sub-white corundum powder dispensing, first put in the mixer such as cone-type mixer or tilting high-speed mixer, when mixed at high speed, micron order fine powder is made to be disperseed by ultra micro kyanite high uniformity, it is thus achieved that homodisperse premixed powder. Later stage and other raw material (including aggregate, fine powder, additive etc.) jointly put in planetary stirring machine and remix. According to the above ratio by after each component mix homogeneously, the water adding above-mentioned compound 5% stirs, the material being stirred is placed in mould pour into a mould, vibration shaping (40mm*40mm*160mm), the demoulding after placing 24 hours, after maintenance in 72 hours, within 24 hours at 110 DEG C, drying after within 3 hours, burning till with 1500 DEG C of insulations, then according to concerned countries standard is tested, gained results of property is: the bulk density of 110 DEG C of * 24h is 3.20-3.27g/cm3(GB/T2999-2002), compressive resistance is 100-123MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.10-3.24g/cm3(GB/T2999-2002), compressive resistance is that 150-160MPa (GB/T5072-2008), permanent line are changed to 0.8% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 22 times (YB/T376.3-2004).
Comparative example 1
Adopting the formula of the ultra micro kyanite refractory casting material of embodiment 1, incite somebody to action, all raw materials together carry out mixed at high speed before cast, the water being subsequently adding compound 5% stirs. Other are with embodiment 1.
The final properties of product test prepared is as follows: the bulk density of 110 DEG C of * 24h is 3.05-3.15g/cm3(GB/T2999-2002), compressive resistance is 70-85MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.90-3.10g/cm3(GB/T2999-2002), compressive resistance is that 85-95MPa (GB/T5072-2008), permanent line are changed to 3.1% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, have erosion or phenomenon of osmosis; The number of times of thermal shock resistance 5 times (YB/T376.3-2004).
Comparative example 2
Kyanite in embodiment 2 is replaced with the kyanite that particle diameter is 13 ��m, and other are with embodiment 2.
The final properties of product test prepared is as follows: the bulk density of 110 DEG C of * 24h is 3.05-3.15g/cm3(GB/T2999-2002), compressive resistance is 70-80MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.90-3.05g/cm3(GB/T2999-2002), compressive resistance is that 80-95MPa (GB/T5072-2008), permanent line are changed to 2.9% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 6 times (YB/T376.3-2004).
Comparative example 3
Kyanite in embodiment 1 is replaced with the kyanite that particle diameter is 3 ��m, and other are with embodiment 1.
The final properties of product test prepared is as follows: the bulk density of 110 DEG C of * 24h is 2.80-2.85g/cm3(GB/T2999-2002), compressive resistance is 50-70MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.73-2.84g/cm3(GB/T2999-2002), compressive resistance is that 60-75MPa (GB/T5072-2008), permanent line are changed to 1.9% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, non-corrosive or phenomenon of osmosis; The number of times of thermal shock resistance 9 times (YB/T376.3-2004).
Comparative example 4
By as follows for alumine aggregate proportioning adjustment in embodiment 2: granularity is 45% (being about 40% in embodiment 2) that the alumine aggregate of 3��5mm accounts for alumine aggregate and alumina powder quality sum, granularity is 15% (being about 10% in embodiment 2) that the alumine aggregate of 1��3mm accounts for blast furnace Alumina aggregate and alumina powder quality sum, and granularity is 30% (being about 30% in embodiment 1) that the alumine aggregate of 0��1mm accounts for blast furnace Alumina aggregate and alumina powder quality sum. Other conditions are with embodiment 2.
The final properties of product test prepared is as follows: the bulk density of 110 DEG C of * 24h is 3.05-3.15g/cm3(GB/T2999-2002), compressive resistance is 65-80MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 2.92-3.05g/cm3(GB/T2999-2002), compressive resistance is that 75-80MPa (GB/T5072-2008), permanent line are changed to 2.4% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, have gentle erosion or phenomenon of osmosis; The number of times of thermal shock resistance 7 times (YB/T376.3-2004).
Comparative example 5
Alumina powder composition in embodiment 5 is adjusted as follows: Al2O3Weight/mass percentage composition >=99%, the ��-Al of granularity��320 order2O3Account for 15% (being about 10% in embodiment 5) of alumine aggregate and alumina powder quality sum; Al2O3Weight/mass percentage composition >=98%, the sub-white corundum powder of granularity��320 order accounts for 1% (being about 3% in embodiment 5) of alumine aggregate and alumina powder quality sum; Al2O3The aluminous cement of weight/mass percentage composition >=50% accounts for 3% (being about 5% in embodiment 5) of alumine aggregate and alumina powder quality sum; BaSO4Weight/mass percentage composition >=95%, the barium sulfate of granularity��200 order accounts for 1% (being about 2% in embodiment 5) of alumine aggregate and alumina powder quality sum.
The final properties of product test prepared is as follows: the bulk density of 110 DEG C of * 24h is 3.05-3.10g/cm3(GB/T2999-2002), compressive resistance is 50-60MPa (GB/T5072-2008); The bulk density of 1500 DEG C of * 3h is 3.02-3.06g/cm3(GB/T2999-2002), compressive resistance is that 65-75MPa (GB/T5072-2008), permanent line are changed to 3.3% (GB/T5988-2007); 815 DEG C of * 72h aluminium alloy erosion tests, have erosion or phenomenon of osmosis; The number of times of thermal shock resistance 5 times (YB/T376.3-2004).
Should be appreciated that specific embodiment described above is only for explaining the present invention, is not intended to limit the present invention. The apparent change extended out by the spirit of the present invention or variation are still among protection scope of the present invention.

Claims (10)

1. a ultra micro kyanite refractory casting material, it is characterized in that: its component and weight fraction include alumine aggregate 47��80%, alumina powder 10��40%, additive 0.05��3% and ultra micro kyanite 3��10%, described ultra micro kyanite is alumina content >=50%, kyanite phase >=70%, granularity��10 ��m.
2. ultra micro kyanite refractory casting material according to claim 1, it is characterized in that: aluminum weight percentage >=75% in described alumine aggregate, its grain size distribution is composed as follows: the alumine aggregate that granularity is 3��5mm accounts for the 15��40% of alumine aggregate and alumina powder quality sum, the alumine aggregate that granularity is 1��3mm accounts for the 10��40% of blast furnace Alumina aggregate and alumina powder quality sum, and the alumine aggregate that granularity is 0��1mm accounts for the 0��30% of blast furnace Alumina aggregate and alumina powder quality sum.
3. ultra micro kyanite refractory casting material according to claim 2, it is characterized in that: the alumine aggregate that granularity is 3��5mm accounts for the 30��40% of alumine aggregate and alumina powder quality sum, the alumine aggregate that granularity is 1��3mm accounts for the 20��30% of blast furnace Alumina aggregate and alumina powder quality sum, and the alumine aggregate that granularity is 0��1mm accounts for the 10��20% of blast furnace Alumina aggregate and alumina powder quality sum.
4. ultra micro kyanite refractory casting material according to claim 1, it is characterised in that: described alumina powder is composed as follows: Al2O3Weight/mass percentage composition >=99%, the ��-Al of granularity��320 order2O3Account for the 1��10% of alumine aggregate and alumina powder quality sum; Al2O3Weight/mass percentage composition >=98%, the sub-white corundum powder of granularity��320 order accounts for the 3��8% of alumine aggregate and alumina powder quality sum; Al2O3The aluminous cement of weight/mass percentage composition >=50% accounts for the 5��20% of alumine aggregate and alumina powder quality sum; BaSO4Weight/mass percentage composition >=95%, the barium sulfate of granularity��200 order accounts for the 2��7% of alumine aggregate and alumina powder quality sum.
5. ultra micro kyanite refractory casting material according to claim 4, it is characterised in that: described alumina powder is composed as follows: Al2O3Weight/mass percentage composition >=99%, the ��-Al of granularity��320 order2O3Account for the 6��8% of alumine aggregate and alumina powder quality sum; Al2O3Weight/mass percentage composition >=98%, the sub-white corundum powder of granularity��320 order accounts for the 4��5% of alumine aggregate and alumina powder quality sum; Al2O3The aluminous cement of weight/mass percentage composition >=50% accounts for the 5��7% of alumine aggregate and alumina powder quality sum; BaSO4Weight/mass percentage composition >=95%, the barium sulfate of granularity��200 order accounts for the 5��7% of alumine aggregate and alumina powder quality sum.
6. ultra micro kyanite refractory casting material according to claim 1, it is characterised in that: described additive is one or more in sodium tripolyphosphate, sodium hexametaphosphate, citric acid, sodium aluminate, naphthalene water reducer, sodium pyrophosphate, sodium tetrapolyphosphate, sodium silicate.
7. ultra micro kyanite refractory casting material according to claim 1, it is characterised in that: described ultra micro kyanite granularity is 5 ��m.
8. the ultra micro kyanite refractory casting material according to any one of claim 1��7 is used for the application of the making of prefabricated component, it is characterised in that: step is as follows:
(1) by ultra micro kyanite and ��-Al2O3 and sub-white corundum powder in homogenizer blended, it is thus achieved that homodisperse premixed powder, then mix with other raw materials again;
(2) in blender, the water of joined castable and castable weight 3��6% is mixed, mix the fluidity that cast is required thoroughly;
(3) material being stirred is placed in mould pour into a mould, vibration shaping;
(4) demoulding maintenance after curing in the mold;
(5) enter stove and carry out fire by prefabricated component fire temperature increasing schedule;
(6) come out of the stove, check, pack, be transported to user scene, installation, come into operation after baker.
9. application according to claim 8, it is characterised in that: the described curing in the mold time is 24h, and demoulding curing time is more than 72h.
10. the ultra micro kyanite refractory casting material described in any one of claim 1��7 is used for the application of cast-in-site refractory lining, it is characterised in that: step is as follows:
(1) by ultra micro kyanite and ��-Al2O3 and sub-white corundum powder in homogenizer blended, it is thus achieved that homodisperse premixed powder, then mix with other raw materials again;
(2) in blender, the water of joined castable and castable weight 3��6% is mixed, mix the fluidity that cast is required thoroughly;
(3) material being stirred is placed in mould pour into a mould, vibration shaping;
(4) curing in the mold, the demoulding more than maintenance 72h, by baker temperature increasing schedule fire, then come into operation.
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CN109354485A (en) * 2018-11-09 2019-02-19 洛阳索莱特材料科技有限公司 A kind of fixed structure of ceramic nozzle and the preparation method of ceramic nozzle
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CN110511045A (en) * 2019-08-09 2019-11-29 苏州盛曼特新材料有限公司 A kind of refractory material casting material solidifying type composite highly effective dispersing agent of rush and preparation method thereof
CN110627490A (en) * 2019-10-25 2019-12-31 中冶武汉冶金建筑研究院有限公司 Preparation method and application of environment-friendly self-flow aluminum-silicon refractory injection molding material
CN114105616A (en) * 2021-11-30 2022-03-01 中钢集团洛阳耐火材料研究院有限公司 Novel low-loss protective material for rocket launching platform

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CN101113099A (en) * 2007-07-05 2008-01-30 武汉科技大学 High-alumina electric furnace cover pouring material and preparation method thereof
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CN107382342A (en) * 2017-08-03 2017-11-24 济南圣泉倍进陶瓷过滤器有限公司 A kind of exotic material and its preparation method and application
CN109354485A (en) * 2018-11-09 2019-02-19 洛阳索莱特材料科技有限公司 A kind of fixed structure of ceramic nozzle and the preparation method of ceramic nozzle
CN110511045A (en) * 2019-08-09 2019-11-29 苏州盛曼特新材料有限公司 A kind of refractory material casting material solidifying type composite highly effective dispersing agent of rush and preparation method thereof
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CN110423103A (en) * 2019-08-12 2019-11-08 瑞泰马钢新材料科技有限公司 A kind of middle water containing opening environmentally friendly chamotte and preparation method thereof
CN110627490A (en) * 2019-10-25 2019-12-31 中冶武汉冶金建筑研究院有限公司 Preparation method and application of environment-friendly self-flow aluminum-silicon refractory injection molding material
CN110627490B (en) * 2019-10-25 2022-02-01 中冶武汉冶金建筑研究院有限公司 Preparation method and application of environment-friendly self-flow aluminum-silicon refractory injection molding material
CN114105616A (en) * 2021-11-30 2022-03-01 中钢集团洛阳耐火材料研究院有限公司 Novel low-loss protective material for rocket launching platform
CN114105616B (en) * 2021-11-30 2023-11-14 中钢集团洛阳耐火材料研究院有限公司 Rocket launching platform low-loss protective material

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