CN106495719A - A kind of preparation method of coke dry quenching furnace chute bracket pillar brick - Google Patents

A kind of preparation method of coke dry quenching furnace chute bracket pillar brick Download PDF

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Publication number
CN106495719A
CN106495719A CN201610971003.9A CN201610971003A CN106495719A CN 106495719 A CN106495719 A CN 106495719A CN 201610971003 A CN201610971003 A CN 201610971003A CN 106495719 A CN106495719 A CN 106495719A
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brick
preparation
quenching furnace
dry quenching
coke dry
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钱虎林
王春洪
刘府根
储叶君
李嘉
李瑞兰
齐书祥
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Maanshan Iron and Steel Co Ltd
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Maanshan Iron and Steel Co Ltd
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C04B35/6306—Binders based on phosphoric acids or phosphates
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C04B35/6306—Binders based on phosphoric acids or phosphates
    • C04B35/6309—Aluminium phosphates
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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
    • C04B2235/34—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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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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
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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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
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • C04B2235/9623—Ceramic setters properties

Abstract

The invention discloses a kind of preparation method of coke dry quenching furnace chute bracket pillar brick.The method is specifically carried out according to the following steps：Step S1, dispensing are mixed；Step S2, mixed grind；Step S3, compressing；Step S4, firing；Step S5, test package.The andalusite that the present invention is adopted strengthens frame strength effect, effectively improves thermal shock performance；High-purity fused mullite has needle-shaped crystal structure, can absorb the expansion of andalusite transformation stage, improve thermal shock and rupture strength；Plate diamond spar can improve wearability, substitute the component of former carborundum powder, effectively improve antioxygenic property；Nanometer alpha Al2O3Material at high temperature liquid phase is constituted, and can effectively improve high-temperature liquid-phase sintering mechanism, promotes stable lattice to generate.

Description

A kind of preparation method of coke dry quenching furnace chute bracket pillar brick
Technical field
A kind of the invention belongs to technical field of refractory materials, more particularly to preparation side of coke dry quenching furnace chute bracket pillar brick Method.
Background technology
Coke dry quenching (abbreviation coke dry quenching furnace), is an important device of dry quenching system.Coke dry quenching furnace internal upper part is to prestore Room and being looped around is prestored outdoor the annular passage that connected with the room of prestoring, and bottom is cooling chamber, and upper, annular air channel and bottom are cold But connected by the chute area at middle part between room, used as the structure that forms a connecting link, its component mainly includes bracket pillar in chute area, Bracket pillar is key position.The coke dry quenching furnace chute bracket pillar brick for using at present is using common refractory material making Into preparation technology is very much tradition, after coke dry quenching furnace typically runs 1-2, due to being denuded by high-temperature coke and coke powder for a long time, causes Bracket pillar is damaged or caves in, and blowing out of having to carries out annual overhaul to bracket pillar, the annual overhaul time typically at 30 days or so, annual overhaul Time is long；And the maximization with blast furnace, blast furnace is increasing for dependency to the guarantor of dry coke quenching charcoal, and each blowing out is given birth to blast furnace Produce impact huge, it is impossible to meet the use requirement of modern steel joint enterprise.
Content of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of system of coke dry quenching furnace chute bracket pillar brick Preparation Method, optimizes preparation technology, the thermal shock resistance of the bracket pillar brick of raising and use intensity, and extending chute bracket pillar makes Use the life-span.
In order to realize that above-mentioned goal of the invention, the present invention are employed the following technical solutions：
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 43～47%, electrofused mullite 28～ 32%th, Kaolin fine powder 5～5.5%, α-Al2O3Micropowder 4.5～5%, alumine 6.5～7%, plate diamond spar 7.5～8%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 5～10 minutes, mixed grind is uniform；
Step S3, compressing：More than 630t friction presses side is delivered to by Turnover Box after mixed grind is good, by brick mould Compressing；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 24～48 hours that kiln drying is dry, by the intensification work of regulation Skill carries out stove and is fired into brick；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the heating process is：1) by brick Base enters kiln drying after placing naturally dry, is to slowly warm up to 300 DEG C, constant temperature 2 hours；2) speed is burnt till after Natural Water in adobe is drained 5 DEG C/h of speed-raising, is continuously heating to 800 DEG C, constant temperature 3 hours；3) in each mineral, free water and eutectic burn, afterwards quick liter Temperature is to 1360 DEG C of firing temperature, constant temperature 5 hours；4) kiln is opened when naturally cooling to 700 DEG C, brick sample is cooled to room temperature.
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the grain class distribution of the andalusite For：2-5mm23～27%, 200 mesh 13%, 325 mesh 7%, its physical and chemical index is：
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the electrofused mullite is by electric arc Make after producing high temperature melting synthesis, its grain class distribution is：1-3mm18%；240 mesh 12%, its physical and chemical index is：
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the grade of the plate diamond spar is ＞ 0.1mm, its physical and chemical index is：
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the α-Al2O3Micropowder is nanometer Grade, its grain class distribution is：D50/ μm of median：3～6% ,+25 μm of content≤2%, α-Al2O3The chemical composition of micropowder For：Al2O3Content >=99.7% and α-Al2O3Content >=96.8%.
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the Kaolin plasticity combines thin The grade of powder is≤180 mesh, and its chemical constituent is：Al2O3>=43%.
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the grade of the alumine is ≤ 240 mesh, its chemical constituent are Al2O3>=85%, body is close >=3.3g/cm3.
In the preparation method of above-mentioned coke dry quenching furnace chute bracket pillar brick, optionally, the aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.35-1.45g/cm3.
Compared with prior art, the beneficial effect that the present invention can be realized at least includes the following aspects：
(1) the pressing unfired brick molding effect that preparation method of the invention is obtained is preferable, intact side unfilled corner phenomenon；
(2) rationally, preferably, product sintering is uniform for temperature control effect for the heating rate of preparation method of the invention, in conjunction with Mutually stable；
(3) by little sample testing, using this molding, firing process system refractory brick best performance；
(4) andalusite strengthens frame strength effect, effectively improves thermal shock performance；High-purity fused mullite has acicular crystal Structure, can absorb the expansion of andalusite transformation stage, improve thermal shock and rupture strength；Plate diamond spar can improve wearability, substitute The component of former carborundum powder, effectively improves antioxygenic property；Nanometer alpha-Al2O3Material at high temperature liquid phase is constituted, and can be effectively improved High-temperature liquid-phase sintering mechanism, promotes stable lattice to generate.
Specific embodiment
Firstly, it is necessary to illustrate, coke dry quenching furnace chute bracket pillar of the present invention below will be illustrated by way of example The preparation method feature of brick and advantage etc., but what all of description was intended merely to illustrate, and should not be construed as right The present invention forms any restriction.
The embodiment for being just given by this below is entering to the preparation method of coke dry quenching furnace chute bracket pillar brick of the present invention Row exemplary illustration.
Embodiment 1
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 46%, electrofused mullite 29%, kaolinite Native fine powder 5%, α-Al2O3Micropowder 5%, alumine 7%, plate diamond spar 8%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 5 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 24 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm26%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm17%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：3%th ,+25 μm Content 2%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content be 99.7% and α-Al2O3Content be 97.2%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%；, The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.35g/cm3.
Embodiment 2
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 47%, electrofused mullite 28%, kaolinite Native fine powder 5.5%, α-Al2O3Micropowder 4.5%, alumine 7%, plate diamond spar 8%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 10 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 48 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm27%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm18%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：4%th ,+25 μm Content 0.5%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content be 99.7% and α-Al2O3Content be 97.6%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%； The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.45g/cm3.
Embodiment 3
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 45%, electrofused mullite 31%, kaolinite Native fine powder 5%, α-Al2O3Micropowder 5%, alumine 6.5%, plate diamond spar 7.5%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 8 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 24 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm25%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm18%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：3%th ,+25 μm Content 2%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content be 99.8% and α-Al2O3Content be 97.8%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%； The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.40g/cm3.
Embodiment 4
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 43%, electrofused mullite 32%, kaolinite Native fine powder 5.5%, α-Al2O3Micropowder 5%, alumine 7%, plate diamond spar 7.5%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 10 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 48 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm23%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm18%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：3%th ,+25 μm Content 2%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content be 99.8% and α-Al2O3Content 97.2%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%； The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.35g/cm3.
Embodiment 5
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 44%, electrofused mullite 32%, kaolinite Native fine powder 5%, α-Al2O3Micropowder 5%, alumine 6.5%, plate diamond spar 7.5%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 10 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 48 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm24%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm18%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：3%th ,+25 μm Content 2%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content 99.9% and α-Al2O3Content 97%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%； The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.35-1.45g/cm3.
Embodiment 6
A kind of preparation method of coke dry quenching furnace chute bracket pillar brick, is specifically carried out according to the following steps：
Step S1, dispensing are mixed：
1) according to composition (mass percent) dispensing of bracket pillar brick：Andalusite 46%, electrofused mullite 29%, kaolinite Native fine powder 5.4%, α-Al2O3Micropowder 5%, alumine 7%, plate diamond spar 7.6%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put into the planetary batch mixer of pressure In, then the fine powder for having mixed addition is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：The aluminium metaphosphate complex liquid for stirring addition 3% in the material being mixed evenly in step S1 is carried out Wet rolling, wet rolling 8 minutes, mixed grind is uniform；
Step S3, compressing：630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 48 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick, and heating process is：1) enter kiln drying after place adobe naturally dry, be to slowly warm up to 300 DEG C, constant temperature 2 is little When；2) speed is burnt till after Natural Water in adobe is drained to raise speed 5 DEG C/h, is continuously heating to 800 DEG C, constant temperature 3 hours；3) each In mineral, free water and eutectic burn, after be rapidly heated to 1360 DEG C of firing temperature, constant temperature 5 hours；4) 700 are naturally cooled to DEG C when open kiln, brick sample is cooled to room temperature；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, close After lattice, outgoing is packed.
In the present embodiment, the grain class distribution of andalusite is：2-5mm26%, 200 mesh 13%, 325 mesh 7%, its physics and chemistry Can index be：
Andalusite can form good mullite network during heating changes into mullite through calcining, this A kind of irreversible crystal transformation, Once transformed, then have higher fire resistance, refractoriness up to more than 1800 DEG C, and Resistance to suddenly cold and hot, mechanical strength are big, and heat shock resistance power is strong, and resistance to slag is strong, and loading inversion point is high, and with high chemically stable Property (or even do not dissolve in Fluohydric acid .) and extremely strong resistance to chemical corrosion.
In the present embodiment, electrofused mullite is produced after high temperature melting synthesizes by electric arc and is made, and its grain class distribution is：1- 3mm18%；240 mesh 12%, its physical and chemical index is：
In the present embodiment, the grade of plate diamond spar is ＞ 0.1mm, and its physical and chemical index is：
In the present embodiment, α-Al2O3Micropowder is nanoscale, and its grain class distribution is：D50/ μm of median：3%th ,+25 μm Content 2%, α-Al2O3The chemical constituent of micropowder is：Al2O3Content 99.9% and α-Al2O3Content 97.6%.
In the present embodiment, Kaolin plasticity combine fine powder grade be≤180 mesh, its chemical constituent Al2O3>=43%； The grade of alumine be≤240 mesh, its chemical constituent Al2O3>=85%, body is close >=3.3g/cm3；Aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.42g/cm3.
The coke dry quenching furnace chute bracket pillar andalusite brick obtained by above-described embodiment 1-6 methods, thermal shock resistance and pressure Intensity two indices, performance design index are as shown in table 1 below.
1 coke dry quenching furnace chute bracket pillar andalusite brick physicochemical property of table
Below only to elaborate the preparation method of coke dry quenching furnace chute bracket pillar brick of the present invention, this is a few by way of example Example is only used for the principle and embodiments thereof of the explanation present invention, rather than limitation of the present invention, in the essence without departing from the present invention In the case of god and scope, those skilled in the art can also make various modifications and improvement.Therefore, the technical side of all equivalents Case all should belong to scope of the invention and be limited by every claim of the present invention.

Claims (9)

1. a kind of preparation method of coke dry quenching furnace chute bracket pillar brick, it is characterised in that specifically carry out according to the following steps：
Step S1, dispensing are mixed：
1) according to the composition mass percent dispensing of bracket pillar brick：Andalusite 43～47%, electrofused mullite 28～32%, height Ridge soil fine powder 5～5.5%, α-Al2O3Micropowder 4.5～5%, alumine 6.5～7%, plate diamond spar 7.5～8%；
2) granule and fine powder in composition dispensing is separately mixed respectively, wherein granule is put in the planetary batch mixer of pressure, then The fine powder for having mixed is added and is stirred together, it is ensured that stirring is full and uniform；
Step S2, mixed grind：Stir in step S1 in the material being mixed evenly add 3% aluminium metaphosphate complex liquid carry out wet Roll over, wet rolling 5～10 minutes, mixed grind is uniform；
Step S3, compressing：More than 630t friction presses side is delivered to by Turnover Box after mixed grind is good, is suppressed by brick mould Molding；
Step S4, firing：Naturally enter after the adobe for suppressing is placed 24～48 hours that kiln drying is dry, enter by the heating process of regulation Row stove is fired into brick；
Step S5, test package：The sampled detection physical and chemical index of brick sample, especially thermal shock resistance and compressive resistance, qualified after, Packaging outgoing.
2. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the heating process is：1) by brick Base enters kiln drying after placing naturally dry, is to slowly warm up to 300 DEG C, constant temperature 2 hours；2) speed is burnt till after Natural Water in adobe is drained 5 DEG C/h of speed-raising, is continuously heating to 800 DEG C, constant temperature 3 hours；3) in each mineral, free water and eutectic burn, afterwards quick liter Temperature is to 1360 DEG C of firing temperature, constant temperature 5 hours；4) kiln is opened when naturally cooling to 700 DEG C, brick sample is cooled to room temperature.
3. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the grain class distribution of the andalusite For：2-5mm23～27%, 200 mesh 13%, 325 mesh 7%, its physical and chemical index is：
4. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the electrofused mullite is by electric arc Make after producing high temperature melting synthesis, its grain class distribution is：1-3mm18%；240 mesh 12%, its physical and chemical index is：
5. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the grade of the plate diamond spar is ＞ 0.1mm, its physical and chemical index is：
6. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the α-Al2O3Micropowder is nanometer Grade, its grain class distribution is：D50/ μm of median：3～6% ,+25 μm of content≤2%, α-Al2O3The chemical composition of micropowder For：Al2O3Content >=99.7% and α-Al2O3Content >=96.8%.
7. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the Kaolin plasticity combine thin The grade of powder is≤180 mesh, and its chemical constituent is：Al2O3>=43%.
8. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the grade of the alumine is ≤ 240 mesh, its chemical constituent are Al2O3>=85%, body is close >=3.3g/cm3.
9. the preparation method of coke dry quenching furnace chute bracket pillar brick according to claim 1, the aluminium metaphosphate complex liquid is Al(H2PO4)3With H3PO4Mixed solution, its body is close for 1.35-1.45g/cm3.
CN201610971003.9A 2016-11-07 2016-11-07 A kind of preparation method of coke dry quenching furnace chute bracket pillar brick Pending CN106495719A (en)

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CN111747736A (en) * 2020-07-13 2020-10-09 马鞍山钢铁股份有限公司 Preparation method of complex-phase oxidation-resistant quenching-resistant chute support brick
CN113563906A (en) * 2021-06-18 2021-10-29 中国五冶集团有限公司 Novel bracket brick for inclined air duct of coke dry quenching furnace and manufacturing method thereof
CN115321970A (en) * 2022-08-30 2022-11-11 河南瑞泰耐火材料科技有限公司 Andalusite-hercynite composite brick for zinc volatilization rotary kiln and preparation method thereof
CN115611643A (en) * 2022-09-02 2023-01-17 五冶集团上海有限公司 Novel prefabricated block for chute pillar of dry quenching furnace and preparation method thereof

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CN103130515A (en) * 2011-12-02 2013-06-05 河南省新密市青屏耐火材料有限责任公司 Mullite brick used for dry quenching stove
CN103693973A (en) * 2013-12-02 2014-04-02 武汉钢铁(集团)公司 Refractory brick for dry-quenching coke oven and preparation method of refractory brick

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CN1086801A (en) * 1992-11-07 1994-05-18 新乡无氧铜材总厂 Andalusite dry stamp material
CN1793052A (en) * 2005-12-23 2006-06-28 郑州豫兴耐火材料有限公司 Thermal-shock resistant fireproof brick and production process thereof
CN102161590A (en) * 2010-02-24 2011-08-24 山东鲁耐窑业有限责任公司 Mullite-andalusite product for key position of dry quenching device and preparation method thereof
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Publication number Priority date Publication date Assignee Title
CN111747736A (en) * 2020-07-13 2020-10-09 马鞍山钢铁股份有限公司 Preparation method of complex-phase oxidation-resistant quenching-resistant chute support brick
CN113563906A (en) * 2021-06-18 2021-10-29 中国五冶集团有限公司 Novel bracket brick for inclined air duct of coke dry quenching furnace and manufacturing method thereof
CN115321970A (en) * 2022-08-30 2022-11-11 河南瑞泰耐火材料科技有限公司 Andalusite-hercynite composite brick for zinc volatilization rotary kiln and preparation method thereof
CN115321970B (en) * 2022-08-30 2023-08-22 河南瑞泰耐火材料科技有限公司 Andalusite-hercynite composite brick for zinc volatilization rotary kiln and preparation method of andalusite-hercynite composite brick
CN115611643A (en) * 2022-09-02 2023-01-17 五冶集团上海有限公司 Novel prefabricated block for chute pillar of dry quenching furnace and preparation method thereof

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Application publication date: 20170315