CN107117951A - A kind of high-strength dispersive air brick and preparation method thereof - Google Patents

A kind of high-strength dispersive air brick and preparation method thereof Download PDF

Info

Publication number
CN107117951A
CN107117951A CN201710393482.5A CN201710393482A CN107117951A CN 107117951 A CN107117951 A CN 107117951A CN 201710393482 A CN201710393482 A CN 201710393482A CN 107117951 A CN107117951 A CN 107117951A
Authority
CN
China
Prior art keywords
air brick
dispersive air
strength
substrate
aggregate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710393482.5A
Other languages
Chinese (zh)
Inventor
李远兵
王庆恒
李淑静
向若飞
徐娜娜
欧阳思
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
Original Assignee
Wuhan University of Science and Engineering WUSE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Science and Engineering WUSE filed Critical Wuhan University of Science and Engineering WUSE
Priority to CN201710393482.5A priority Critical patent/CN107117951A/en
Publication of CN107117951A publication Critical patent/CN107117951A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped 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
    • C04B35/101Refractories from grain sized mixtures
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063Preparing or treating the raw materials individually or as batches
    • C04B38/0635Compounding ingredients
    • C04B38/0645Burnable, meltable, sublimable materials
    • C04B38/067Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/447Phosphates or phosphites, e.g. orthophosphate, hypophosphite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74Physical characteristics
    • C04B2235/77Density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The present invention relates to a kind of high-strength dispersive air brick and preparation method thereof.Its technical scheme is:Using 30 ~ 75wt% plate diamond spar as aggregate, the plate diamond spar fine powder, 5 ~ 15wt% alumina powder and 3 ~ 8wt% bonding agent using 17 ~ 47wt% is substrate materials.First the substrate material is mixed, then the substrate material and aggregate of mixing are inserted into mixer, 0.1 ~ 1.0wt% of additional aggregate and substrate material sum water reducer and 6 ~ 14wt% water, stirs, is poured into the grinding tool added with organic foam sponge, is stood;The demoulding, is dried, and 3 ~ 6h is incubated under the conditions of 1500 ~ 1650 DEG C, and high-strength dispersive air brick is made.The diffusion-type passage of the high-strength dispersive air brick is formed after being burnt by organic foam sponge, and scope is levied for 10 ~ 55ppi in the hole of organic foam sponge.Present invention process is simple, production efficiency is high and cost is low, and prepared high-strength dispersive air brick good permeability, purification capacity are strong, intensity is high and thermal shock resistance can be excellent.

Description

A kind of high-strength dispersive air brick and preparation method thereof
Technical field
The invention belongs to air brick technical field, and in particular to a kind of high-strength dispersive air brick and preparation method thereof.
Background technology
Field trash is harm molten steel, the major impurity of steel product quality, and to improve the quality of steel, furnace outer refining technology is existing Turn into indispensable important step in being produced for steel.Furnace outer refining technology by the air brick installed in ladle bottom to The inert gases such as people's argon gas, nitrogen are blown in molten steel, molten steel is sufficiently stirred for, it is alloy in molten steel of rapid dispersion, fusing addition, de- Oxygen agent, desulfurizing agent etc., make harmful field trash and gas in molten steel float, and reach uniform molten steel composition and temperature, reduction gas Content, improvement molten steel flow, the purpose of refining liquid steel.
Divide according to stomata pattern, air brick is divided into dispersive air brick, through-type air brick and Slctted Plug.Directly Flow-through air brick and Slctted Plug have intensity high, the advantage of resistance to erosion, and dispersive air brick has good work Reliability, security and economy, and good impurity removing effect, have important effect for production clean steel;And it is existing more Dissipating type air brick has low intensity, the shortcoming of erosion resistibility difference.A kind of " Al2O3-SiO2Matter ventilating brick of middle ladle and its preparation The patented technology of method " (CN201110231552.X), plate diamond spar particle of this method using particle diameter as 0.088~3mm, particle diameter For 0.088~1mm mullite particle, white fused alumina fine powder, ρ-Al2O3Fine powder and silicon powder are raw material, with calgon and three Mixture, yellow starch gum, azodicarbonamide, the Al of polyphosphate sodium2O3-SiO2Gel powder and aluminum fluoride are used as additive, raw material kind Class is various, reduces production efficiency, and add labor intensity;" a kind of high through-blowing rate air brick and its manufacture method " (CN201410094948.8) patented technology, this method is with 0.5~1mm thick corundum in granules, 0~0.5mm thin corundum Grain, 0.020~0.044mm aluminum oxide fine powder, 0~0.020mm alumina powder is raw material, is prepared by mechanical pressing high Through-blowing rate air brick, machine pressure method shaping needs large-scale forcing press, and purchase of equipment is costly, and labor intensity is high;
The content of the invention
It is contemplated that overcoming prior art defect, it is therefore an objective to provide that a kind of technique is simple, labor intensity is low, production efficiency The preparation method of the high and low high-strength dispersive air brick of cost, the gas permeability of the high-strength dispersive air brick prepared with this method Good, purification capacity is strong, intensity is high and thermal shock resistance can be excellent.
To achieve the above object, the technical solution adopted in the present invention is:Using 30~75wt% plate diamond spar as aggregate, Plate diamond spar fine powder, 5~15wt% alumina powder and 3~8wt% bonding agent using 17~47wt% is substrate material.First The substrate material is mixed, then the substrate material after mixing and the aggregate are inserted into mixer, is then added into the mixer Enter 0.1~1.0wt% of the aggregate and substrate material sum water reducer and 6~14wt% water, stir 3~5min, pour Note in grinding tool, 20~30h is stood under room temperature condition;It is stripped, 22~26h is dried under the conditions of 90~120 DEG C, 1500~1650 3~6h is incubated under the conditions of DEG C, high-strength dispersive air brick is produced.The diffusion-type passage of the high-strength dispersive air brick is to pass through Organic foam sponge is formed after burning.
Organic foam sponge is provided with the grinding tool, scope is levied for 10~55ppi in the hole of the organic foam sponge.
Particle diameter≤1mm of the plate diamond spar aggregate.
Meso-position radius≤80 μm of the plate diamond spar fine powder.
The alumina powder is Reactive alumina or is α-Al2O3Micro mist;The meso-position radius of the alumina powder ≤5μm。
The bonding agent is aluminous cement or is ρ-Al2O3Micro mist.
The water reducer is the mixture of sodium tripolyphosphate and calgon, sodium tripolyphosphate and calgon quality Than for 1: (0.8~1.2).
Due to using above-mentioned technical proposal, the present invention has following good effect compared with prior art:
The present invention, as template, by forming the insertion stomata of diffusion-type after burning, is made prepared using organic foam sponge High-strength dispersive air brick refractoriness under load it is high, with good applied at elevated temperature performance.
The present invention is using pouring type shaping, it is not necessary to which large-scale machine pressure equipment, technique is simple, labor intensity is small and production Efficiency high, and the dispersive air brick of irregular shape can also be poured into a mould.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 20~30%;Bulk density be 2.4~ 3.0g/cm3;Air permeability is 5~32 μm2;Compressive resistance after burning till is 80~180MPa.
Therefore, the present invention has the advantages that technique is simple, labor intensity is low, production efficiency is high and cost is low, prepared High-strength dispersive air brick good permeability, purification capacity are strong, compressive resistance is high and thermal shock resistance can be excellent.
Embodiment
With reference to embodiment, the invention will be further described, not to the limitation of its protection domain:
To avoid repeating, the relevant material Unify legislation for being first related to present embodiment is as follows, general in embodiment Do not repeat:
Organic foam sponge is provided with the grinding tool.
Particle diameter≤1mm of the plate diamond spar aggregate.
Meso-position radius≤80 μm of the plate diamond spar fine powder.
Meso-position radius≤5 μm of the alumina powder.
The water reducer is the mixture of sodium tripolyphosphate and calgon, sodium tripolyphosphate and calgon quality Than for 1: (0.8~1.2).
Embodiment 1
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 70.5~ 75wt% plate diamond spar is aggregate, with 17~20wt% plate diamond spar fine powder, 5~6wt% alumina powder and 3~ 3.5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1500~1575 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 10ppi or be 15ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 25~30%;Bulk density be 2.4~ 2.55g/cm3;Air permeability is 23~32 μm2;Compressive resistance after burning till is 80~135MPa.
Embodiment 2
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 66~ 70.5wt% plate diamond spar is aggregate, with 20~23wt% plate diamond spar fine powder, 6~7wt% alumina powder and 3.5 ~4wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1515~1590 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is α-Al2O3Micro mist;Bonding agent ρ-the Al2O3Micro mist.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 15ppi or be 20ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 24.5~29.5%;Bulk density is 2.45~2.6g/cm3;Air permeability is 21~30 μm2;Compressive resistance after burning till is 85~140MPa.
Embodiment 3
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 61.5~ 66wt% plate diamond spar is aggregate, with 23~26wt% plate diamond spar fine powder, 7~8wt% alumina powder and 4~ 4.5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1530~1605 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 20ppi or be 25ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 24~29.0%;Bulk density is 2.5 ~2.65g/cm3;Air permeability is 19~28 μm2;Compressive resistance after burning till is 90~145MPa.
Embodiment 4
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 57~ 61.5wt% plate diamond spar is aggregate, with 26~29wt% plate diamond spar fine powder, 8~9wt% alumina powder and 4.5 ~5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1545~1620 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is α-Al2O3Micro mist;The bonding agent is ρ-Al2O3Micro mist.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 25ppi or be 30ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 23.5~28.5%;Bulk density is 2.55~2.7g/cm3;Air permeability is 17~26 μm2;Compressive resistance after burning till is 95~150MPa.
Embodiment 5
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 52.5~ 57wt% plate diamond spar is aggregate, with 29~32wt% plate diamond spar fine powder, 9~10wt% alumina powder and 5~ 5.5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1560~1635 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 30ppi or be 35ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 23~28%;Bulk density be 2.6~ 2.75g/cm3;Air permeability is 15~24 μm2;Compressive resistance after burning till is 100~155MPa.
Embodiment 6
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 48~ 52.5wt% plate diamond spar be aggregate, with 32~35wt% plate diamond spar fine powder, 10~11wt% alumina powder and 5.5~6wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are put Enter mixer, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of bars 22~26h is dried under part, 3~6h is incubated under the conditions of 1575~1650 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is α-Al2O3Micro mist;The bonding agent is ρ-Al2O3Micro mist.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 35ppi or be 40ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 22.5~27.5%;Bulk density is 2.65~2.8g/cm3;Air permeability is 13~22 μm2;Compressive resistance after burning till is 105~160MPa.
Embodiment 7
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 43.5~ 48wt% plate diamond spar is aggregate, with 35~38wt% plate diamond spar fine powder, 11~12wt% alumina powder and 6~ 6.5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1530~1605 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 40ppi or be 45ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 22~27%;Bulk density be 2.7~ 2.85g/cm3;Air permeability is 11~20 μm2;Compressive resistance after burning till is 110~165MPa.
Embodiment 8
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 39~ 43.5wt% plate diamond spar be aggregate, with 38~41wt% plate diamond spar fine powder, 12~13wt% alumina powder and 6.5~7wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are put Enter mixer, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of bars 22~26h is dried under part, 3~6h is incubated under the conditions of 1545~1620 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is α-Al2O3Micro mist;The bonding agent is ρ-Al2O3Micro mist.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 45ppi or be 50ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 21.5~26.5%;Bulk density is 2.75~2.9g/cm3;Air permeability is 9~18 μm2;Compressive resistance after burning till is 115~170MPa.
Embodiment 9
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 34.5~ 39wt% plate diamond spar is aggregate, with 41~44wt% plate diamond spar fine powder, 13~14wt% alumina powder and 7~ 7.5wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are inserted and stirred Mix machine, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~ 14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of conditions 22~26h of lower drying, 3~6h is incubated under the conditions of 1560~1635 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 50ppi or be 55ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 21~26%;Bulk density be 2.8~ 2.95g/cm3;Air permeability is 7~16 μm2;Compressive resistance after burning till is 120~175MPa.
Embodiment 10
A kind of high-strength dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment:With 30~ 34.5wt% plate diamond spar be aggregate, with 44~47wt% plate diamond spar fine powder, 14~15wt% alumina powder and 7.5~8wt% bonding agent is substrate material.First the substrate material is mixed, then the substrate material after mixing and the aggregate are put Enter mixer, then added into the mixer 0.1~1.0wt% of the aggregate and the substrate material sum water reducer and 6~14wt% water, stirs 3~5min, is poured into grinding tool, and 20~30h is stood under room temperature condition;The demoulding, 90~120 DEG C of bars 22~26h is dried under part, 3~6h is incubated under the conditions of 1575~1650 DEG C, high-strength dispersive air brick is produced.
In the present embodiment:The alumina powder is Reactive alumina;The bonding agent is aluminous cement.
The diffusion-type passage of high-strength dispersive air brick described in the present embodiment is formed after being burnt by organic foam sponge.Institute Levy scope and be 50ppi or be 55ppi in the hole for stating organic foam sponge.
High-strength dispersive air brick prepared by the present invention is after testing:Apparent porosity is 20~25%;Bulk density is 2.85 ~3.0g/cm3;Air permeability is 5~14 μm2;Compressive resistance after burning till is 125~180MPa.
Present embodiment has the positive effect that compared with prior art:
Present embodiment uses organic foam sponge as template, by forming the insertion stomata of diffusion-type after burning, Make prepared high-strength dispersive air brick refractoriness under load high, with good applied at elevated temperature performance.
Present embodiment is molded using pouring type, it is not necessary to which large-scale machine pressure equipment, technique is simple, labor intensity Small and production efficiency is high, and can also pour into a mould the dispersive air brick of irregular shape.
High-strength dispersive air brick prepared by present embodiment is after testing:Apparent porosity is 20~30%;Volume is close Spend for 2.4~3.0g/cm3;Air permeability is 5~32 μm2;Compressive resistance after burning till is 80~180MPa.
Therefore, present embodiment has the advantages that technique is simple, labor intensity is low, production efficiency is high and cost is low, Prepared high-strength dispersive air brick good permeability, purification capacity are strong, compressive resistance is high and thermal shock resistance can be excellent.

Claims (7)

1. a kind of preparation method of high-strength dispersive air brick, it is characterised in that using 30~75wt% plate diamond spar as aggregate, Plate diamond spar fine powder, 5~15wt% alumina powder and 3~8wt% bonding agent using 17~47wt% is substrate material;First The substrate material is mixed, then the substrate material after mixing and the aggregate are inserted into mixer, is then added into the mixer Enter 0.1~1.0wt% of the aggregate and substrate material sum water reducer and 6~14wt% water, stir 3~5min, pour Note in grinding tool, 20~30h is stood under room temperature condition;It is stripped, 22~26h is dried under the conditions of 90~120 DEG C, 1500~1650 3~6h is incubated under the conditions of DEG C, high-strength dispersive air brick is produced;
Organic foam sponge is provided with the grinding tool, scope is levied for 10~55ppi in the hole of the organic foam sponge.
2. the preparation method of high-strength dispersive air brick according to claim 1, it is characterised in that the plate diamond spar aggregate Particle diameter≤1mm.
3. the preparation method of high-strength dispersive air brick according to claim 1, it is characterised in that the plate diamond spar fine powder Meso-position radius≤80 μm.
4. the preparation method of high-strength dispersive air brick according to claim 1, it is characterised in that the alumina powder is Reactive alumina is α-Al2O3Micro mist;Meso-position radius≤5 μm of the alumina powder.
5. the preparation method of high-strength dispersive air brick according to claim 1, it is characterised in that the bonding agent is aluminic acid Calcium cement is ρ-Al2O3Micro mist.
6. the preparation method of high-strength dispersive air brick according to claim 1, it is characterised in that the water reducer is trimerization The mixture of sodium phosphate and calgon, sodium tripolyphosphate is 1 with calgon mass ratio: (0.8~1.2).
7. a kind of high-strength dispersive air brick, it is characterised in that the high-strength dispersive air brick is according to claim 1~6 Any one of high-strength dispersive air brick preparation method prepared by high-strength dispersive air brick.
CN201710393482.5A 2017-05-27 2017-05-27 A kind of high-strength dispersive air brick and preparation method thereof Pending CN107117951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710393482.5A CN107117951A (en) 2017-05-27 2017-05-27 A kind of high-strength dispersive air brick and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710393482.5A CN107117951A (en) 2017-05-27 2017-05-27 A kind of high-strength dispersive air brick and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107117951A true CN107117951A (en) 2017-09-01

Family

ID=59730029

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710393482.5A Pending CN107117951A (en) 2017-05-27 2017-05-27 A kind of high-strength dispersive air brick and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107117951A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066167A (en) * 2018-01-23 2019-07-30 江苏盛耐新材料有限公司 A kind of compounding and its burning process of machine pressure long-life air brick
CN110423127A (en) * 2019-07-31 2019-11-08 武汉科技大学 A kind of metallurgy packet refractory material and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011865A (en) * 2012-12-25 2013-04-03 潍坊华强耐火材料有限公司 Ventilated brick and preparation method thereof
CN105645977A (en) * 2016-01-08 2016-06-08 洛阳利尔耐火材料有限公司 Air brick for special steel refining and preparation method thereof
CN105859315A (en) * 2016-03-31 2016-08-17 武汉科技大学 Lightweight dispersion-type ventilating brick and preparation method thereof
CN105859309A (en) * 2016-03-31 2016-08-17 武汉科技大学 Dispersive air brick and preparation method thereof
CN106588098A (en) * 2017-01-09 2017-04-26 武汉科技大学 Dispersion corundum-spinel air brick and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011865A (en) * 2012-12-25 2013-04-03 潍坊华强耐火材料有限公司 Ventilated brick and preparation method thereof
CN105645977A (en) * 2016-01-08 2016-06-08 洛阳利尔耐火材料有限公司 Air brick for special steel refining and preparation method thereof
CN105859315A (en) * 2016-03-31 2016-08-17 武汉科技大学 Lightweight dispersion-type ventilating brick and preparation method thereof
CN105859309A (en) * 2016-03-31 2016-08-17 武汉科技大学 Dispersive air brick and preparation method thereof
CN106588098A (en) * 2017-01-09 2017-04-26 武汉科技大学 Dispersion corundum-spinel air brick and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066167A (en) * 2018-01-23 2019-07-30 江苏盛耐新材料有限公司 A kind of compounding and its burning process of machine pressure long-life air brick
CN110423127A (en) * 2019-07-31 2019-11-08 武汉科技大学 A kind of metallurgy packet refractory material and preparation method thereof

Similar Documents

Publication Publication Date Title
CN105859309B (en) A kind of dispersive air brick and preparation method thereof
CN101717246B (en) Method for preparing high alumina castable without being moistened by aluminum liquid
CN103979992B (en) Ladle porous brick and preparation method thereof
CN105254323B (en) A kind of micropore corundum-mullite ceramics separation-membrane support and preparation method thereof
CN104250099B (en) Al2O3- MgO refractory casting materials and preparation method thereof
CN104944989B (en) A kind of silicasol-combined corundum silicon carbide wet spray material
CN107117951A (en) A kind of high-strength dispersive air brick and preparation method thereof
CN102603274A (en) Cramp iron castable and preparation method thereof
CN104475672B (en) A kind of cast paint utilizing steel-making runner scrap to produce and preparation method thereof
WO1988006263A1 (en) Method for spray-working refractory composition
CN107805059A (en) A kind of Ladle Bottom brick cup and preparation method thereof
CN105645979A (en) Steel ladle air brick and manufacturing method thereof
CN100355703C (en) Refractory brick of aluminium-chromium silicon carbide
CN108727040A (en) Porous refractory mould material and application thereof and manufacture
CN104628397B (en) Novel non-congealable paste refractory mortar and preparation method thereof
CN106673677B (en) Environment-friendly anhydrous stemming for submerged arc furnace and preparation method thereof
CN103755361B (en) A kind of Aluminum-chromium-sifireproof fireproof material
CN106220210A (en) Fibrous ceramic insulation based on polyaluminium chloride waste residue and preparation method thereof
CN103979991B (en) A kind of stainless steel smelting air brick of steel ladle and preparation method thereof
CN108526388A (en) A kind of cast paint and preparation method thereof for flow coat
CN104045361A (en) Aluminum silica sol composite combined aluminum silicon carbide castable and preparation method thereof
CN108160913B (en) Additive for precoated sand
JP3074246B2 (en) Method for producing high-strength inorganic foam
CN108298994A (en) A kind of high-performance push plate and preparation method
CN109180160A (en) A kind of tundish magnesia gas permeable material and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170901