CN107226688A - A kind of dispersive air brick and preparation method thereof - Google Patents
A kind of dispersive air brick and preparation method thereof Download PDFInfo
- Publication number
- CN107226688A CN107226688A CN201710393481.0A CN201710393481A CN107226688A CN 107226688 A CN107226688 A CN 107226688A CN 201710393481 A CN201710393481 A CN 201710393481A CN 107226688 A CN107226688 A CN 107226688A
- Authority
- CN
- China
- Prior art keywords
- air brick
- dispersive air
- preparation
- conditions
- dispersant
- 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
Links
Classifications
-
- 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
- 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
- C04B35/62605—Treating the starting powders individually or as 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
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6264—Mixing media, e.g. organic solvents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
Abstract
The present invention relates to a kind of dispersive air brick and preparation method thereof.Its technical scheme is：Using 50 ~ 70wt% plate diamond spar particle, 20 ~ 30wt% aluminium hydroxide fine powder, 10 ~ 20wt% alumina powder as raw material, mix, obtain compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.1~1.8）∶（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is deaerated under the conditions of 0.01 ~ 0.02MPa, solidified under the conditions of 60 ~ 10 DEG C, is dried in drying machine, 3 ~ 9h is then incubated under the conditions of 1500 ~ 1700 DEG C, dispersive air brick is produced.The plate diamond spar grain diameter is 0.2 ~ 1.5mm.The present invention has the advantages that technique is simple, labor intensity is low, production efficiency is high, environmentally safe, and prepared dispersive air brick good permeability, purification capacity are strong, thermal shock resistance energy is excellent.
Description
Technical field
The invention belongs to air brick technical field.Specifically related to a kind of dispersive air brick and preparation method thereof.
Background technology
With expanding economy, for the quality requirement more and more higher of steel, furnace outer refining technology has new development.Steel
Bag BOTTOM ARGON BLOWING is the key of furnace outer refining process, and bottom-blown air brick is the most key function element of this technique, by installing
The inert gases such as people's argon gas, nitrogen are blown into molten steel in the air brick of ladle bottom, molten steel is sufficiently stirred for, made harmful in molten steel
Field trash and gas float, and reach the purpose of reduction gas content and refining liquid steel.
Air brick is broadly divided into three kinds：Dispersive air brick, through-type air brick and Slctted Plug.And diffusion-type is saturating
Gas brick has good functional reliability, security and economy, and these advantages are through-type and Slctted Plug can not
Analogy." a kind of high through-blowing rate air brick and its manufacture method "（CN201410094948.8）Patented technology, this method with
0.5 ~ 1mm thick corundum in granules, 0 ~ 0.5mm thin corundum in granules, 0.020 ~ 0.044mm aluminum oxide fine powder and 0 ~ 0.020mm
Alumina powder be raw material, high through-blowing rate air brick is made by mechanical pressing, machine pressure method shaping needs large-scale pressure
Machine, purchase of equipment is costly, and labor intensity is high；" a kind of Anti-seepage air-permeable brick and its manufacture method "
（CN201210247846.6）Patented technology, this method is by 2 ~ 4mm of granularity, 1 ~ 2mm, 0 ~ 1mm corundum in granules, corundum are thin
Powder, α-Al2O3Micro mist, spinelle fine powder and hydrated alumina are raw material, add organic fiber and micro- pore forming agent（Including
Starch, aluminum sulfate, alum, anhydrous magnesium sulfate）, formation is lost by the decomposition or burning of micro- pore forming agent and is largely uniformly distributed
Micro- stomata, due to micro- pore forming agent decompose or burn lose during outwardly can discharge CO in environment2And NH3Deng
Gas, pollution is caused to environment, and aluminum sulfate has certain stimulation to eyes, mucous membrane, and security is low.
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 high, environment amenable dispersive air brick, the good permeability of the dispersive air brick prepared with this method, is removed
Miscellaneous ability is strong, thermal shock resistance energy is excellent.
To achieve the above object, the technical solution adopted in the present invention is：With 50 ~ 70wt% plate diamond spar particle, 20 ~
30wt% aluminium hydroxide fine powder, 10 ~ 20wt% alumina powder are raw material, are well mixed, obtain compound.By the mixing
Material: solvent: the mass ratio of dispersant is 1:（0.1~1.8）∶（0.001~0.01）, the compound, solvent and dispersant are stirred
Mix uniform, obtain dispersion.The dispersion is deaerated 5 ~ 15min, -60 ~ -10 DEG C of bars under the conditions of 0.01 ~ 0.02MPa
Solidify 2 ~ 8h under part, the base substrate after solidification is dried into 20 ~ 40h in freeze drier, then protected under the conditions of 1500 ~ 1700 DEG C
3 ~ 9h of temperature, produces dispersive air brick.
The plate diamond spar grain diameter is 0.2 ~ 1.5mm.
The meso-position radius of the aluminium hydroxide fine powder are less than 88 μm.
During the alumina powder is Reactive alumina or is calcined alumina micro mist, the alumina powder
Position footpath is less than 6 μm.
The solvent is water or is the tert-butyl alcohol.
The dispersant is one kind in sodium tripolyphosphate, calgon, ammonium polyacrylate.
Due to using above-mentioned technical proposal, the present invention has following good effect compared with prior art：
The present invention using the narrower plate diamond spar of particle diameter distribution as aggregate, with reference to freeze-drying moulding process, it is prepared more
Type air brick good permeability is dissipated, the ability for removing impurity and nonmetal oxide in molten steel is strong, and thermal shock resistance is excellent.
The raw material type that the present invention is used is few, and labor intensity is low, and will not volatilize CO in sintering process2、NH3It is right Deng gas
It is environment-friendly.
The present invention is using pouring type shaping, and technique is simple, labor intensity is small and production efficiency is high, and can also pour into a mould and do not advise
The then dispersive air brick of shape.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 30 ~ 50%；Bulk density is 1.5 ~ 2.4g/
cm3；Air permeability is 40 ~ 150 μm2；Compressive resistance after burning till is 15 ~ 50MPa.
Therefore, the present invention is with technique is simple, labor intensity is low, production efficiency is high and environment amenable advantage, made
Standby dispersive air brick good permeability, purification capacity are strong 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, will not be gone to live in the household of one's in-laws on getting married in embodiment
State：
The meso-position radius of the aluminium hydroxide fine powder are less than 88 μm.
The meso-position radius of the alumina powder are less than 6 μm.
Embodiment 1
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 63.5 ~ 70wt% plate diamond spar particle, 20 ~ 25.5wt% aluminium hydroxide fine powder, 10 ~ 15.5wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.1~0.9）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1500 ~ 1580 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.2 ~ 0.7mm.
The alumina powder is Reactive alumina.
The solvent is water.
The dispersant is sodium tripolyphosphate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 30 ~ 41%；Bulk density is 1.95 ~ 2.4g/
cm3；Air permeability is 40 ~ 105 μm2；Compressive resistance after burning till is 42 ~ 50MPa.
Embodiment 2
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 62 ~ 68.5wt% plate diamond spar particle, 20.5 ~ 26wt% aluminium hydroxide fine powder, 10.5 ~ 16wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.2~1.0）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1530 ~ 1610 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.4 ~ 0.9mm.
The alumina powder is calcined alumina micro mist.
The solvent is water.
The dispersant is calgon.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 31 ~ 42%；Bulk density is 1.9 ~ 2.35g/
cm3；Air permeability is 45 ~ 110 μm2；Compressive resistance after burning till is 39 ~ 47MPa.
Embodiment 3
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 60.5 ~ 67wt% plate diamond spar particle, 21 ~ 26.5wt% aluminium hydroxide fine powder, 11 ~ 16.5wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.3~1.1）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1560 ~ 1640 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.6 ~ 1.1mm.
The alumina powder is Reactive alumina.
The solvent is water.
The dispersant is ammonium polyacrylate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 32 ~ 43%；Bulk density is 1.85 ~ 2.3g/
cm3；Air permeability is 50 ~ 115 μm2；Compressive resistance after burning till is 36 ~ 44MPa.
Embodiment 4
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 59 ~ 65.5wt% plate diamond spar particle, 21.5 ~ 27wt% aluminium hydroxide fine powder, 11.5 ~ 17wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.4~1.2）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1590 ~ 1670 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.8 ~ 1.3mm.
The alumina powder is calcined alumina micro mist.
The solvent is water.
The dispersant is sodium tripolyphosphate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 33 ~ 44%；Bulk density is 1.8 ~ 2.25g/
cm3；Air permeability is 55 ~ 120 μm2；Compressive resistance after burning till is 33 ~ 41MPa.
Embodiment 5
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 57.5 ~ 64wt% plate diamond spar particle, 22 ~ 27.5wt% aluminium hydroxide fine powder, 12 ~ 17.5wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.5~1.3）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1620 ~ 1700 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 1.0 ~ 1.5mm.
The alumina powder is Reactive alumina.
The solvent is water.
The dispersant is calgon.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 34 ~ 45%；Bulk density is 1.75 ~ 2.2g/
cm3；Air permeability is 60 ~ 125 μm2；Compressive resistance after burning till is 30 ~ 38MPa.
Embodiment 6
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 56 ~ 62.5wt% plate diamond spar particle, 22.5 ~ 28wt% aluminium hydroxide fine powder, 12.5 ~ 18wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.6~1.4）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1500 ~ 1580 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.2 ~ 0.7mm.
The alumina powder is calcined alumina micro mist.
The solvent is the tert-butyl alcohol.
The dispersant is ammonium polyacrylate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 35 ~ 46%；Bulk density is 1.7 ~ 2.15g/
cm3；Air permeability is 65 ~ 130 μm2；Compressive resistance after burning till is 27 ~ 35MPa.
Embodiment 7
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 54.5 ~ 61wt% plate diamond spar particle, 23 ~ 28.5wt% aluminium hydroxide fine powder, 13 ~ 18.5wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.7~1.5）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1530 ~ 1610 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.4 ~ 0.9mm.
The alumina powder is Reactive alumina.
The solvent is the tert-butyl alcohol.
The dispersant is sodium tripolyphosphate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 36 ~ 47%；Bulk density is 1.65 ~ 2.1g/
cm3；Air permeability is 70 ~ 135 μm2；Compressive resistance after burning till is 24 ~ 32MPa.
Embodiment 8
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 53 ~ 59.5wt% plate diamond spar particle, 23.5 ~ 29wt% aluminium hydroxide fine powder, 13.5 ~ 19wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.8~1.6）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1560 ~ 1640 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.6 ~ 1.1mm.
The alumina powder is calcined alumina micro mist,
The solvent is the tert-butyl alcohol.
The dispersant is calgon.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 37 ~ 48%；Bulk density is 1.6 ~ 2.05g/
cm3；Air permeability is 75 ~ 140 μm2；Compressive resistance after burning till is 21 ~ 29MPa.
Embodiment 9
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 51.5 ~ 58wt% plate diamond spar particle, 24 ~ 29.5wt% aluminium hydroxide fine powder, 14 ~ 19.5wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（0.9~1.7）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1590 ~ 1670 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 0.8 ~ 1.3mm.
The alumina powder is Reactive alumina.
The solvent is the tert-butyl alcohol.
The dispersant is ammonium polyacrylate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 38 ~ 49%；Bulk density is 1.55 ~ 2.0g/
cm3；Air permeability is 80 ~ 145 μm2；Compressive resistance after burning till is 18 ~ 26MPa.
Embodiment 10
A kind of dispersive air brick and preparation method thereof.Preparation method is described in the present embodiment：
It is micro- with 50 ~ 56.5wt% plate diamond spar particle, 24.5 ~ 30wt% aluminium hydroxide fine powder, 14.5 ~ 20wt% aluminum oxide
Powder is raw material, is well mixed, obtains compound.By the compound: solvent: the mass ratio of dispersant is 1:（1.0~1.8）∶
（0.001~0.01）, the compound, solvent and dispersant are stirred, dispersion is obtained.The dispersion is existed
Deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, and 2 ~ 8h is solidified under the conditions of -60 ~ -10 DEG C, and the base substrate after solidification is dry in freezing
20 ~ 40h is dried in dry machine, 3 ~ 9h is then incubated under the conditions of 1620 ~ 1700 DEG C, dispersive air brick is produced.
The plate diamond spar grain diameter is 1.0 ~ 1.5mm.
The alumina powder is calcined alumina micro mist.
The solvent is the tert-butyl alcohol.
The dispersant is sodium tripolyphosphate.
Dispersive air brick prepared by the present invention is after testing：Apparent porosity is 39 ~ 50%；Bulk density is 1.5 ~ 1.95g/
cm3；Air permeability is 85 ~ 150 μm2；Compressive resistance after burning till is 15 ~ 23MPa.
Present embodiment has following good effect compared with prior art：
Present embodiment uses the narrower plate diamond spar of particle diameter distribution as aggregate, with reference to freeze-drying moulding process, institute
The dispersive air brick good permeability of preparation, the ability for removing impurity and nonmetal oxide in molten steel is strong, and thermal shock is stable
Property is excellent.
The raw material type that present embodiment is used is few, and labor intensity is low, and will not volatilize CO in sintering process2、NH3
It is environmentally friendly Deng gas.
Present embodiment is molded using pouring type, and technique is simple, labor intensity is small and production efficiency is high, and can also
Pour into a mould the dispersive air brick of irregular shape.
Dispersive air brick prepared by present embodiment is after testing：Apparent porosity is 30 ~ 50%；Bulk density is 1.5
~2.4g/cm3；Air permeability is 40 ~ 150 μm2；Compressive resistance after burning till is 15 ~ 50MPa.
Therefore, present embodiment has that technique is simple, labor intensity is low, production efficiency is high and environment amenable excellent
Point, prepared dispersive air brick good permeability, purification capacity are strong and thermal shock resistance can be excellent.
Claims (6)
1. a kind of preparation method of dispersive air brick, it is characterised in that with 50 ~ 70wt% plate diamond spar particle, 20 ~ 30wt%
Aluminium hydroxide fine powder, 10 ~ 20wt% alumina powder be raw material, be well mixed, obtain compound；By the compound: molten
Agent: the mass ratio of dispersant is 1:（0.1~1.8）∶（0.001~0.01）, the compound, solvent and dispersant are stirred equal
It is even, obtain dispersion；The dispersion is deaerated 5 ~ 15min under the conditions of 0.01 ~ 0.02MPa, under the conditions of -60 ~ -10 DEG C
Solidify 2 ~ 8h, by the base substrate after solidification in freeze drier dry 20 ~ 40h, then under the conditions of 1500 ~ 1700 DEG C insulation 3 ~
9h, produces dispersive air brick；
The plate diamond spar grain diameter is 0.2 ~ 1.5mm.
2. the preparation method of dispersive air brick according to claim 1, it is characterised in that in the aluminium hydroxide fine powder
Position footpath is less than 88 μm.
3. the preparation method of dispersive air brick according to claim 1, it is characterised in that the alumina powder is activity
Alumina powder is calcined alumina micro mist, and the meso-position radius of the alumina powder are less than 6 μm.
4. the preparation method of dispersive air brick according to claim 1, it is characterised in that the solvent is water or is tertiary fourth
Alcohol.
5. the preparation method of dispersive air brick according to claim 1, it is characterised in that the dispersant is tripolyphosphate
One kind in sodium, calgon, ammonium polyacrylate.
6. a kind of dispersive air brick, it is characterised in that the dispersive air brick is according to any one of claim 1 ~ 4
Dispersive air brick prepared by the preparation method of the dispersive air brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710393481.0A CN107226688A (en) | 2017-05-27 | 2017-05-27 | A kind of dispersive air brick and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710393481.0A CN107226688A (en) | 2017-05-27 | 2017-05-27 | A kind of dispersive air brick and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107226688A true CN107226688A (en) | 2017-10-03 |
Family
ID=59933846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710393481.0A Pending CN107226688A (en) | 2017-05-27 | 2017-05-27 | A kind of dispersive air brick and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107226688A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607832A (en) * | 2008-06-20 | 2009-12-23 | 洛阳利尔耐火材料有限公司 | A kind of diffuse type gas permeable brick |
| 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 |
| CN103787681A (en) * | 2014-02-14 | 2014-05-14 | 唐山市国亮特殊耐火材料有限公司 | Tundish diffuse type air brick and preparation method thereof |
| CN104609870A (en) * | 2013-12-16 | 2015-05-13 | 岑溪市新建球陶瓷有限公司 | Preparation method of porous brick |
| 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 |
-
2017
- 2017-05-27 CN CN201710393481.0A patent/CN107226688A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607832A (en) * | 2008-06-20 | 2009-12-23 | 洛阳利尔耐火材料有限公司 | A kind of diffuse type gas permeable brick |
| 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 |
| CN104609870A (en) * | 2013-12-16 | 2015-05-13 | 岑溪市新建球陶瓷有限公司 | Preparation method of porous brick |
| CN103787681A (en) * | 2014-02-14 | 2014-05-14 | 唐山市国亮特殊耐火材料有限公司 | Tundish diffuse type air brick 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 |
Non-Patent Citations (2)
| Title |
|---|
| 石存兰等: "冻干法制备多孔氮化硼陶瓷及其成孔机理", 《硅酸盐学报》 * |
| 罗震峰等: "基于冰冻干燥法制备高气孔率氧化铝多孔陶瓷", 《铸造技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105859309B (en) | A kind of dispersive air brick and preparation method thereof | |
| CN103193501B (en) | Low-temperature fast-fired lightweight ceramic heat insulation plate and preparation method thereof | |
| CN105503254A (en) | Barium titanate foamed ceramic and preparing method thereof | |
| WO2017121203A1 (en) | Micrometer/nanometer silver-loaded barium titanate foam ceramic and preparation method therefor | |
| CN111333408A (en) | Regenerated magnesium-aluminum-carbon tundish dry material and preparation method thereof | |
| CN101628807B (en) | Convenient active carbon ceramic and preparation method thereof | |
| CN104788121A (en) | Mullite lightweight refractory material and preparation method thereof | |
| CN104177107B (en) | A kind of micropore light weight alumina refractory aggregate and preparation method thereof | |
| CN106747634A (en) | A kind of mullite lightweight refracrory and preparation method thereof | |
| CN103667762B (en) | A kind of preparation method of low density porous metal material | |
| CN108275969A (en) | It is a kind of to utilize the mullite silicon carbide whisker composite ceramic material and preparation method thereof that natural minerals are raw material | |
| CN1884193A (en) | Porous mullite ceramic materials and method for preparing same | |
| CN102249729B (en) | Method for preparing honeycomb ceramic heat accumulator by using andalusite tailings | |
| CN108467258A (en) | A kind of perforation stomata porous ceramics standby using coal ash for manufacturing and preparation method thereof | |
| RU2300506C1 (en) | Building material and the method of its production | |
| CN111333409A (en) | Regenerated magnesia-carbon tundish dry material and preparation method thereof | |
| CN103467072A (en) | Preparation method for light microporous corundum ceramic | |
| CN104226893B (en) | A kind of lost foam casting coating and preparation method thereof | |
| CN104860712A (en) | Method for preparing microporous lightweight thermal-insulation aggregate with waste fused quartz crucible | |
| CN108658612B (en) | Preparation method of refractory heat-insulating brick | |
| CN103922713A (en) | Lightweight iolite-mullite composite ceramic material and preparation method thereof | |
| CN107226688A (en) | A kind of dispersive air brick and preparation method thereof | |
| CN101503282A (en) | Preparation of black reclaimed sand | |
| CN101284723B (en) | Process for preparing low porosity clay brick from waste sagger | |
| CN103964812B (en) | Vitrified brick being main raw material with brown coal germanium tailings 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 |
Application publication date: 20171003 |
|
| RJ01 | Rejection of invention patent application after publication |