CN115368117A - Aluminum-silicon composite prefabricated member with different densities and preparation method thereof - Google Patents
Aluminum-silicon composite prefabricated member with different densities and preparation method thereof Download PDFInfo
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- CN115368117A CN115368117A CN202211119542.1A CN202211119542A CN115368117A CN 115368117 A CN115368117 A CN 115368117A CN 202211119542 A CN202211119542 A CN 202211119542A CN 115368117 A CN115368117 A CN 115368117A
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- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 66
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 57
- 239000002994 raw material Substances 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 67
- 239000002245 particle Substances 0.000 claims description 63
- 238000003756 stirring Methods 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000000843 powder Substances 0.000 claims description 49
- 239000000377 silicon dioxide Substances 0.000 claims description 32
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 24
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 24
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 24
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 24
- 239000002210 silicon-based material Substances 0.000 claims description 20
- 239000004568 cement Substances 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 15
- 239000011819 refractory material Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 2
- 229910001570 bauxite Inorganic materials 0.000 description 24
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910008051 Si-OH Inorganic materials 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 229910006358 Si—OH Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- 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
- C04B2235/34—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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- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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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
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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
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- Ceramic Products (AREA)
Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to a different-density aluminum-silicon composite prefabricated part and a preparation method thereof. Wherein the alumina castable material plays a role in structural support, and the light mullite castable material plays a role in heat preservation. The feed consists of the following raw materials: the feed consists of the following raw materials: the aluminum-silicon composite material prefabricated part with different densities effectively avoids the defects of the existing used materials, and is good in high-temperature performance, heat preservation performance and strength.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to an aluminum-silicon composite prefabricated part with different densities and a preparation method thereof.
Background
The castable prefabricated member is a prefabricated refractory product, is also a refractory product commonly used by industrial kilns, can improve the furnace building efficiency due to convenient construction, and is widely used for various industrial kiln linings and positions inconvenient for building refractory bricks.
The alumina prefabricated part is used for the early furnace door in China, has good high-temperature resistance and high strength, but has poor heat insulation performance, is easy to deform a metal component of the door frame, has large heat dissipation loss accounting for about 20 percent of the surface heat dissipation loss, and is heavy in weight and difficult to replace. The light prefabricated member with lower heat conductivity has good heat insulation performance, but lower strength and poor high temperature resistance, and cannot meet the use requirement. Therefore, it is necessary to search for an aluminum-silicon composite prefabricated member with different densities and a preparation method, wherein the aluminum-silicon composite prefabricated member has good heat insulation performance and high strength, can reduce the surface temperature, reduces the danger to operators due to too high surface temperature, and meets the requirements of energy conservation, environmental protection and safety.
Disclosure of Invention
The purpose of the invention is: an aluminum-silicon composite prefabricated member with different densities is provided. The performances of high strength, high wear resistance, high corrosion resistance and high refractoriness under load of the heavy material are exerted; meanwhile, the advantages of good heat insulation effect, good thermal shock stability, energy conservation and environmental protection of the light material are fully utilized, so that the two materials are fully compounded. The prefabricated member is divided into three layers from top to bottom, namely a light layer, a fusion layer and a heavy layer, so that the optimal characteristics of materials of all parts are exerted. The product greatly reduces heat loss when in use, and greatly improves the heat efficiency of the coke oven. After the furnace door material adopts the composite material, the temperature of the furnace door is reduced to below 70 ℃, and the metal component can work for a long time. The weight of the prefabricated part is reduced by more than 25%, the load of the furnace door is reduced, and the service life is prolonged. The product effectively avoids the defects of the existing materials, and meets the requirements of high temperature resistance, energy conservation, environmental protection and prolonged service life.
The invention also provides a preparation method thereof.
The aluminum-silicon composite prefabricated part with different densities consists of the following raw materials: alumina with the grain size of 5-3mm, alumina with the grain size of 3-1mm, alumina with the grain size of 1-0.088mm, alumina with the grain size of less than 0.088mm, light mullite with the grain size of 5-3mm, light mullite with the grain size of 3-1mm, light mullite with the grain size of 1-0.088mm, light mullite with the grain size of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water. The alumina is an aggregate of a high-density aluminum-silicon material, the light mullite is an aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are used as binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are used as water reducing agents.
Wherein:
the aluminum-silicon composite prefabricated part with different densities comprises the following high-density aluminum-silicon materials in parts by mass: 20 to 30 parts of alumina with the particle size of 5 to 3mm, 20 to 30 parts of alumina with the particle size of 3 to 1mm, 20 to 30 parts of alumina with the particle size of 1 to 0.088mm, 10 to 20 parts of alumina with the particle size of less than 0.088mm, 2 to 8 parts of alumina micropowder, 3 to 10 parts of silica micropowder, 3 to 10 parts of A600 cement, 0.1 to 0.5 part of sodium tripolyphosphate, 0.1 to 0.5 part of sodium hexametaphosphate and 5 to 10 parts of water. The low-density aluminum-silicon material comprises the following raw materials: 20 to 30 parts of light mullite with the particle size of 5 to 3mm, 20 to 30 parts of light mullite with the particle size of 3 to 1mm, 20 to 30 parts of light mullite with the particle size of 1 to 0.088mm, 10 to 20 parts of light mullite with the particle size of less than 0.088mm, 2 to 8 parts of alumina micropowder, 3 to 10 parts of silica micropowder, 3 to 10 parts of A600 cement, 0.1 to 0.5 part of sodium tripolyphosphate, 0.1 to 0.5 part of sodium hexametaphosphate and 10 to 25 parts of water. The particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
The preparation method of the aluminum-silicon composite prefabricated member with different densities comprises the following steps:
(1) And (3) assembling the triple die, fixing the triple die after the triple die is placed on a vibrating table, opening the vibrating table to check whether the triple die is fixed firmly, and closing the vibrating table after the check is finished.
(2) The raw materials required by the experiment are respectively weighed by an electronic balance and independently placed. The measuring cylinder measures the required water amount, and the water amount is poured into a beaker for standby.
(3) And preparing a lower-layer high-density castable. And putting the aggregate of the high-density aluminum-silicon material, the binding agent and the water reducing agent together, and carrying out primary mixing and stirring for later use.
(4) And (3) putting the mixed raw materials such as the aggregate into a stirring pot, putting the stirring pot on a stirrer, and fixing.
(5) Add 90% water to the kettle and turn on the stirrer switch.
(6) After stirring for one minute, the stirrer is stopped, the previously mixed powder is added, the stirrer is opened, and the remaining water is added into the stirring pot while stirring.
(7) And (5) after stirring for two minutes, closing the stirrer, completing the preparation of the high-density castable, and preparing to start pouring the prefabricated member.
(8) And after the stirrer is closed, taking down the stirring pot, pouring the castable into the triple mold, and stopping pouring when the castable is poured to a half of the triple mold.
(9) The vibrating table is opened to start vibrating, at the moment, bubbles are generated in the triple mold, and pouring is needed to be poured to a position half full of the triple mold.
(10) After vibrating for 90s, the vibrator is turned off. And the lower-layer prefabricated part is poured.
(11) And after a certain time, preparing the upper-layer low-density castable. The measuring cylinder measures the required water amount, and the water amount is poured into a beaker for standby. The aggregate, the fine powder, the bonding agent and the water reducing agent for preparing the low-density aluminum-silicon material are put together and primarily stirred for standby. According to the manufacturing method, the pouring can be stopped when the triple die is fully poured according to the fourth step to the seventh step. The entire preform is now ready for casting.
(12) Drying in a drying oven at 110 deg.C for 24 hr, taking out, and demolding to obtain the final product. Then placing the mixture in a laboratory electric furnace, and carrying out heat treatment for 60 minutes at 1200 ℃.
Wherein:
and (5) waiting for a certain time in the step (11), wherein the time is 10-15 minutes.
Compared with the prior art, the invention has the following beneficial effects:
(1) The performance of the castable can be remarkably improved by introducing the silicon dioxide micropowder into the aluminum-silicon composite prefabricated member with different densities. The silicon oxide micro powder has good fluidity and water reducing effect. The silicon oxide micro powder and water can generate hydration reaction, si-OH bonds similar to silica gel structures are generated on the surface, and in the drying process, the Si-OH bonds are dehydrated and polymerized into firm Si-O-Si bond long chains, and the bonds can obviously improve the strength of the casting material. The alumina micro powder has higher activity, can reduce the sintering temperature of the castable and increase the sintering strength of the castable; the alumina micro powder can also fill gaps among particles, reduce water addition amount and reduce porosity; can generate mullite with silicon oxide at high temperature, and improve high-temperature performance.
(2) The alumina-silica composite prefabricated part with different densities uses the mixing ratio of the alumina castable and the light mullite castable, mainly plays the roles of supporting the structure and contacting with high-temperature materials in a furnace in the composite prefabricated part, and can improve the strength, so that the strength can be ensured to be within the strength required by masonry when the thickness of the alumina castable is reduced.
(3) The preparation method of the aluminum-silicon composite prefabricated part with different densities has the advantages of simple process, easy control of parameters and good performance of the prepared refractory material.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The aluminum-silicon composite preforms with different densities described in the embodiment 1 are composed of the following raw materials: bauxite with the grain diameter of 5-3mm, bauxite with the grain diameter of 3-1mm, bauxite with the grain diameter of 1-0.088mm, bauxite with the grain diameter of less than 0.088mm, light mullite with the grain diameter of 5-3mm, light mullite with the grain diameter of 3-1mm, light mullite with the grain diameter of 1-0.088mm, light mullite with the grain diameter of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water. The alumina is an aggregate of a high-density aluminum-silicon material, the light mullite is an aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are used as binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are used as water reducing agents. The particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
The preparation method of the aluminum-silicon composite preform with different densities described in this embodiment 1 comprises the following steps:
(1) And (3) assembling the triple die, fixing the triple die after the triple die is placed on a vibrating table, opening the vibrating table to check whether the triple die is fixed firmly, and closing the vibrating table after the check is finished.
(2) The raw materials required by the experiment are respectively weighed by an electronic balance and independently placed. 5 parts of required water is measured by a measuring cylinder and poured into a beaker for standby.
(3) Preparing a lower-layer high-density castable, putting 30 parts of alumina with the particle size of 5-3mm, 20 parts of alumina with the particle size of 3-1mm and 15 parts of alumina with the particle size of 1-0.088mm together, primarily mixing and stirring, and putting 15 parts of alumina with the particle size of less than 0.088mm, 2 parts of alumina micropowder, 5 parts of silica micropowder, 5 parts of A600 cement, 0.3 part of sodium tripolyphosphate and 0.5 part of sodium hexametaphosphate together, primarily stirring for later use.
(4) And (3) putting the mixed raw materials such as the aggregate into a stirring pot, putting the stirring pot on a stirrer, and fixing.
(5) Add 90% water into the kettle and turn on the stirrer.
(6) After stirring for one minute, the stirrer is stopped, the previously mixed powder is added, the stirrer is opened, and the remaining water is added into the stirring pot while stirring.
(7) And (5) after stirring for two minutes, closing the stirrer, finishing the preparation of the casting material, and preparing to start pouring the prefabricated member.
(8) And after the stirrer is closed, taking down the stirring pot, pouring the castable into the triple mold, and stopping pouring when the triple mold is half full.
(9) And opening the vibrating table to start vibrating, wherein bubbles are generated in the triple mold at the moment, and a certain amount of casting is needed to be poured to a position half full of the triple mold.
(10) After vibrating for 90s, the vibrator is turned off. And the lower-layer prefabricated part is poured.
(11) After waiting for 10 minutes, the upper layer low-density castable is prepared. And measuring 20 parts of required water by using a measuring cylinder, and pouring into a beaker for later use. Putting 35 parts of light mullite with the particle size of 5-3mm, 15 parts of light mullite with the particle size of 3-1mm and 15 parts of light mullite with the particle size of 1-0.088mm together, primarily mixing and stirring by using a spoon, putting 10 parts of light mullite with the particle size of less than 0.088mm, 7 parts of alumina micropowder, 5 parts of silica micropowder, 5 parts of A600 cement, 0.5 part of sodium tripolyphosphate and 0.3 part of sodium hexametaphosphate together, primarily stirring for later use, pouring the triple die according to the fourth step to the seventh step, and stopping pouring. The entire preform is now ready for casting.
(12) Drying in a drying oven at 110 deg.C for 24 hr, taking out, and demolding to obtain the final product. Then placing the mixture in a laboratory electric furnace, and carrying out heat treatment for 60 minutes at 1200 ℃.
Example 2
The aluminum-silicon composite preforms with different densities described in this example 2 were composed of the following raw materials: bauxite with the grain diameter of 5-3mm, bauxite with the grain diameter of 3-1mm, bauxite with the grain diameter of 1-0.088mm, bauxite with the grain diameter of less than 0.088mm, light mullite with the grain diameter of 5-3mm, light mullite with the grain diameter of 3-1mm, light mullite with the grain diameter of 1-0.088mm, light mullite with the grain diameter of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water. The alumina is an aggregate of a high-density aluminum-silicon material, the light mullite is an aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are used as binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are used as water reducing agents. The particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
The preparation method of the aluminum-silicon composite preform with different densities described in this embodiment 2 comprises the following steps:
(1) And (3) assembling the triple die, fixing the triple die after the triple die is placed on a vibration table, opening the vibration table to check whether the fixation of the triple die is firm, and closing the vibration table after the check is finished.
(2) The raw materials required by the experiment are respectively weighed by an electronic balance and independently placed. The required water amount is measured by a measuring cylinder and 7 parts of water are poured into a beaker for standby.
(3) And preparing a lower-layer high-density castable. 27 parts of bauxite with the particle size of 5-3mm, 22 parts of bauxite with the particle size of 3-1mm and 22 parts of bauxite with the particle size of 1-0.088mm are put together for preliminary mixing and stirring, and 17 parts of bauxite with the particle size of less than 0.088mm, 3 parts of alumina micro powder, 7 parts of silicon dioxide micro powder, 7 parts of A600 cement, 0.2 part of sodium tripolyphosphate and 0.3 part of sodium hexametaphosphate are also put together for preliminary stirring for later use.
(4) And (3) putting the mixed raw materials into a stirring pot, putting the stirring pot on a stirrer, and fixing.
(5) Add 90% water to the kettle and turn on the stirrer switch.
(6) After stirring for one minute, the stirrer is stopped, the previously mixed powder is added, the stirrer is opened, and the remaining water is added into the stirring pot while stirring.
(7) And (5) after stirring for two minutes, closing the stirrer, finishing the preparation of the casting material, and preparing to pour the prefabricated part.
(8) After the stirrer is closed, the stirring pot is taken down, the castable is poured into the triple mold, and pouring is stopped when the triple mold is half full
(9) And opening the vibrating table to start vibrating, wherein bubbles are generated in the triple mold at the moment, and a certain amount of casting is needed to be poured to a position half full of the triple mold.
(10) After vibrating for 90s, the vibrator is turned off. And at the moment, pouring of the lower-layer prefabricated part is finished.
(11) After 12 minutes, the upper layer low-density castable is prepared. 25 parts of the required water amount is measured by a measuring cylinder and poured into a beaker for standby. Putting 32 parts of light mullite with the particle size of 5-3mm, 18 parts of light mullite with the particle size of 3-1mm and 10 parts of light mullite with the particle size of 1-0.088mm together, primarily mixing and stirring by using a spoon, and further putting 15 parts of light mullite with the particle size of less than 0.088mm, 7 parts of alumina micropowder, 5 parts of silica micropowder, 5 parts of A600 cement, 0.5 part of sodium tripolyphosphate and 0.3 part of sodium hexametaphosphate together, primarily stirring by using a spoon for later use. The whole prefabricated part is poured at the moment.
(12) Drying in a drying oven at 110 deg.c for 24 hr, demolding and finishing the making of the prefabricated part. Then placing the mixture in a laboratory electric furnace, and carrying out heat treatment for 60 minutes at 1200 ℃.
Example 3
The aluminum-silicon composite preforms with different densities described in this example 3 were composed of the following raw materials: alumina with the grain size of 5-3mm, alumina with the grain size of 3-1mm, alumina with the grain size of 1-0.088mm, alumina with the grain size of less than 0.088mm, light mullite with the grain size of 5-3mm, light mullite with the grain size of 3-1mm, light mullite with the grain size of 1-0.088mm, light mullite with the grain size of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water. The alumina is an aggregate of a high-density aluminum-silicon material, the light mullite is an aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are used as binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are used as water reducing agents. The particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
The preparation method of the aluminum-silicon composite preform with different densities described in this embodiment 3 comprises the following steps:
(1) And (3) assembling the triple die, fixing the triple die after the triple die is placed on a vibrating table, opening the vibrating table to check whether the triple die is fixed firmly, and closing the vibrating table after the check is finished.
(2) The raw materials required by the experiment are respectively weighed by an electronic balance and independently placed. The required water amount is measured by a measuring cylinder and 8 parts of water is poured into a beaker for standby.
(3) And preparing a lower-layer high-density castable. 30 parts of bauxite with the particle size of 5-3mm, 25 parts of bauxite with the particle size of 3-1mm and 25 parts of bauxite with the particle size of 1-0.088mm are put together for preliminary mixing and stirring, and in addition, 20 parts of bauxite with the particle size of less than 0.088mm, 5 parts of alumina micro powder, 10 parts of silicon dioxide micro powder, 10 parts of A600 cement, 0.5 part of sodium tripolyphosphate and 0.5 part of sodium hexametaphosphate are also put together for preliminary stirring for later use.
(4) And (3) putting the mixed raw materials such as the aggregate into a stirring pot, putting the stirring pot on a stirrer, and fixing.
(5) Add 90% water into the kettle and turn on the stirrer.
(6) After stirring for one minute, the stirrer is stopped, the previously mixed powder is added, the stirrer is opened, and the remaining water is added into the stirring pot while stirring.
(7) And (4) after stirring for two minutes, closing the stirrer, finishing the casting material preparation, and preparing to cast the prefabricated member.
(8) And after the stirrer is closed, taking down the stirring pot, pouring the castable into the triple mold, and stopping pouring when the triple mold is half full.
(9) The vibrating table is opened to start vibrating, at the moment, bubbles are generated in the triple mold, and pouring is needed to be poured to a position half full of the triple mold.
(10) After vibrating for 90s, the vibrator is turned off. And the lower-layer prefabricated part is poured.
(11) After waiting for 14 minutes, the preparation of the upper-layer low-density castable is started. And measuring 20 parts of required water by using a measuring cylinder, and pouring into a beaker for later use. Putting 37 parts of light mullite with the particle size of 5-3mm, 13 parts of light mullite with the particle size of 3-1mm and 12 parts of light mullite with the particle size of 1-0.088mm together, primarily mixing and stirring by using a spoon, and further putting 13 parts of light mullite with the particle size of less than 0.088mm, 5 parts of alumina micropowder, 10 parts of silica micropowder, 10 parts of A600 cement, 0.1 part of sodium tripolyphosphate and 0.3 part of sodium hexametaphosphate together, primarily stirring by using a spoon for later use. The entire preform is now ready for casting.
(12) Drying in a drying oven at 110 deg.C for 24 hr, taking out, and demolding to obtain the final product. Then placing the mixture in a laboratory electric furnace, and carrying out heat treatment for 60 minutes at 1200 ℃. .
Example 4
The aluminum-silicon composite preforms with different densities described in this example 4 were composed of the following raw materials: bauxite with the grain diameter of 5-3mm, bauxite with the grain diameter of 3-1mm, bauxite with the grain diameter of 1-0.088mm, bauxite with the grain diameter of less than 0.088mm, light mullite with the grain diameter of 5-3mm, light mullite with the grain diameter of 3-1mm, light mullite with the grain diameter of 1-0.088mm, light mullite with the grain diameter of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water. The alumina is an aggregate of a high-density aluminum-silicon material, the light mullite is an aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are used as binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are used as water reducing agents. The particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
The preparation method of the aluminum-silicon composite preform with different densities described in this embodiment 4 comprises the following steps:
(1) And (3) assembling the triple die, fixing the triple die after the triple die is placed on a vibrating table, opening the vibrating table to check whether the triple die is fixed firmly, and closing the vibrating table after the check is finished.
(2) The raw materials required by the experiment are respectively weighed by an electronic balance and independently placed. The required water amount is measured by a measuring cylinder and 8 parts of water is poured into a beaker for standby.
(3) And preparing a lower-layer high-density castable. 25 parts of bauxite with the particle size of 5-3mm, 20 parts of bauxite with the particle size of 3-1mm and 20 parts of bauxite with the particle size of 1-0.088mm are put together for preliminary mixing and stirring, and 17 parts of bauxite with the particle size of less than 0.088mm, 3 parts of alumina micro powder, 8 parts of silica micro powder, 7 parts of A600 cement, 0.2 part of sodium tripolyphosphate and 0.2 part of sodium hexametaphosphate are also put together for preliminary stirring for later use.
(4) And (3) putting the mixed raw materials such as the aggregate into a stirring pot, putting the stirring pot on a stirrer, and fixing.
(5) Add 90% water into the kettle and turn on the stirrer.
(6) After stirring for one minute, the stirrer is stopped, the previously mixed powder is added, the stirrer is opened, and the remaining water is added into the stirring pot while stirring.
(7) And (5) after stirring for two minutes, closing the stirrer, finishing the preparation of the casting material, and preparing to pour the prefabricated part.
(8) And after the stirrer is closed, taking down the stirring pot, pouring the castable into the triple mold, and stopping pouring when the triple mold is half full.
(9) The vibrating table is opened to start vibrating, at the moment, bubbles are generated in the triple mold, and pouring is needed to be poured to a position half full of the triple mold.
(10) After vibrating for 90s, the vibrator is turned off. And pouring the lower-layer castable.
(11) After 12 minutes, the upper layer low-density castable begins to be prepared. 25 parts of the required water amount is measured by a measuring cylinder and poured into a beaker for standby. Putting 37 parts of light mullite with the particle size of 5-3mm, 10 parts of light mullite with the particle size of 3-1mm and 15 parts of light mullite with the particle size of 1-0.088mm together, primarily mixing and stirring by using a spoon, and further putting 15 parts of light mullite with the particle size of less than 0.088mm, 5 parts of alumina micropowder, 5 parts of silica micropowder, 5 parts of A600 cement, 0.2 part of sodium tripolyphosphate and 0.2 part of sodium hexametaphosphate together, primarily stirring by using a spoon for standby application. The entire preform is now ready for casting.
(12) Drying in a drying oven at 110 deg.c for 24 hr, demolding and finishing the making of the prefabricated part. Then placing the mixture in a laboratory electric furnace, and carrying out heat treatment for 60 minutes at 1200 ℃.
The refractory preforms prepared in examples 1-4 were subjected to flexural and compressive strength tests after drying at 110 ℃ and after firing at 1200 ℃ and the results are shown in table 1 below:
TABLE 1 test results of performance of refractory preform
Claims (4)
1. A different density aluminium-silicon composite prefabricated member is characterized in that: the feed consists of the following raw materials: alumina with the particle size of 5-3mm, alumina with the particle size of 3-1mm, alumina with the particle size of 1-0.088mm, alumina with the particle size of less than 0.088mm, light mullite with the particle size of 5-3mm, light mullite with the particle size of 3-1mm, light mullite with the particle size of 1-0.088mm, light mullite with the particle size of less than 0.088mm, alumina micro powder, silica micro powder, A600 cement, sodium tripolyphosphate, sodium hexametaphosphate and water, wherein the alumina is aggregate of a high-density aluminum-silicon material, the light mullite is aggregate of a low-density aluminum-silicon material, the alumina micro powder and the silica micro powder are binding agents, and the sodium tripolyphosphate and the sodium hexametaphosphate are water reducing agents.
2. The aluminum-silicon composite prefabricated part with different densities comprises the following high-density aluminum-silicon materials in parts by mass: 20 to 30 parts of alumina with the particle size of 5-3mm, 20 to 30 parts of alumina with the particle size of 3-1mm, 20 to 30 parts of alumina with the particle size of 1-0.88mm, 10 to 20 parts of alumina with the particle size of less than 0.088mm, 2 to 8 parts of alumina micropowder, 3 to 10 parts of silica micropowder, 3 to 10 parts of A600 cement, 0.1 to 0.5 part of sodium tripolyphosphate, 0.1 to 0.5 part of sodium hexametaphosphate, and 5 to 10 parts of water, wherein the low-density aluminum-silicon material consists of the following raw materials: 20 to 30 parts of light mullite with the particle size of 5 to 3mm, 20 to 30 parts of light mullite with the particle size of 3 to 1mm, 20 to 30 parts of light mullite with the particle size of 1 to 0.088mm, 10 to 20 parts of light mullite with the particle size of less than 0.088mm, 2 to 8 parts of alumina micropowder, 3 to 10 parts of silica micropowder, 3 to 10 parts of A600 cement, 0.1 to 0.5 part of sodium tripolyphosphate, 0.1 to 0.5 part of sodium hexametaphosphate and 10 to 25 parts of water.
3. The different density aluminum-silicon composite preform of claim 1, wherein: the particle size of the silicon dioxide micro powder and the alumina micro powder is less than or equal to 3 mu m.
4. A method of making a different density aluminum-silicon composite preform according to claim 1, wherein: the method comprises the following steps:
(1) Assembling the triple module, fixing the triple module after the triple module is placed on a vibration table, opening the vibration table to check whether the fixation of the triple module is firm, and closing the vibration table after the check is finished;
(2) Weighing raw materials required by an experiment by using an electronic balance respectively and placing the raw materials separately, measuring the required water amount by using a measuring cylinder, and pouring the measured water amount into a beaker for later use;
(3) Preparing a lower-layer high-density castable, putting aggregate, fine powder, a binding agent and a water reducing agent of a high-density aluminum-silicon material together, and primarily mixing and stirring for later use;
(4) Putting the mixed raw materials such as the aggregate into a stirring pot, putting the stirring pot on a stirrer and fixing;
(5) Adding 90% of water into the stirring pot, and turning on a switch of the stirring pot;
(6) Stopping the stirrer after stirring for one minute, adding the mixed powder, opening the stirrer, and adding the rest water into the stirring pot while stirring;
(7) After stirring for two minutes, turning off the stirrer, finishing the preparation of the high-density castable, and preparing to start casting a prefabricated member;
(8) After the stirrer is closed, taking down the stirring pot, pouring the castable into the triple mold, and stopping pouring when the triple mold is half full;
(9) Opening the vibrating table to start vibrating, wherein bubbles are generated in the triple mold at the moment, and pouring is needed to be performed until the position of the triple mold is half full;
(10) After vibrating for 90s, closing the vibrating machine, and pouring the lower-layer prefabricated part;
(11) After waiting for a certain time, beginning to prepare an upper-layer low-density castable, measuring the required water amount by using a measuring cylinder, pouring the lower-layer low-density castable into a beaker for later use, putting aggregate, fine powder, a bonding agent and a water reducing agent for preparing the low-density aluminum-silicon material together, and carrying out primary stirring for later use;
(12) Drying in a drying oven at 110 deg.C for 24 hr, taking out, demolding to complete the fabrication of the prefabricated part, and heat treating in a laboratory electric furnace at 1200 deg.C for 60 min;
wherein:
and (3) waiting for a certain time in the step (11), wherein the time is 10-15 minutes.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010060400A (en) * | 1999-12-21 | 2001-07-07 | 신현준 | Castable batch composition for blow pipe of blast furnace |
| CN101863674A (en) * | 2010-06-07 | 2010-10-20 | 浙江大学 | Corundum hollow sphere structure heat-insulating integrated composite brick and preparation method thereof |
| CN103058671A (en) * | 2011-10-19 | 2013-04-24 | 上海宝钢工业检测公司 | Pitch coke rotary kiln furnace lining fireproof castable, composite prefabricated section and preparation method |
| CN103242051A (en) * | 2013-05-30 | 2013-08-14 | 武汉科技大学 | Lightweight corundum-mullite castable and preparation method thereof |
| CN107344857A (en) * | 2017-06-20 | 2017-11-14 | 长兴兴鹰新型耐火建材有限公司 | A kind of high-strength low heat conductivity fire resisting energy-conservation castable and preparation method thereof |
| CN111153707A (en) * | 2020-02-13 | 2020-05-15 | 郑州驹达新材料科技有限公司 | Composite refractory prefabricated part for cylindrical kiln and preparation method thereof |
| CN112194470A (en) * | 2020-09-14 | 2021-01-08 | 江苏国豪耐火科技有限公司 | Chromium corundum composite brick for rotary kiln of hazardous waste incinerator and preparation method thereof |
-
2022
- 2022-09-15 CN CN202211119542.1A patent/CN115368117A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010060400A (en) * | 1999-12-21 | 2001-07-07 | 신현준 | Castable batch composition for blow pipe of blast furnace |
| CN101863674A (en) * | 2010-06-07 | 2010-10-20 | 浙江大学 | Corundum hollow sphere structure heat-insulating integrated composite brick and preparation method thereof |
| CN103058671A (en) * | 2011-10-19 | 2013-04-24 | 上海宝钢工业检测公司 | Pitch coke rotary kiln furnace lining fireproof castable, composite prefabricated section and preparation method |
| CN103242051A (en) * | 2013-05-30 | 2013-08-14 | 武汉科技大学 | Lightweight corundum-mullite castable and preparation method thereof |
| CN107344857A (en) * | 2017-06-20 | 2017-11-14 | 长兴兴鹰新型耐火建材有限公司 | A kind of high-strength low heat conductivity fire resisting energy-conservation castable and preparation method thereof |
| CN111153707A (en) * | 2020-02-13 | 2020-05-15 | 郑州驹达新材料科技有限公司 | Composite refractory prefabricated part for cylindrical kiln and preparation method thereof |
| CN112194470A (en) * | 2020-09-14 | 2021-01-08 | 江苏国豪耐火科技有限公司 | Chromium corundum composite brick for rotary kiln of hazardous waste incinerator and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117209259A (en) * | 2023-08-10 | 2023-12-12 | 山东理工大学 | Aluminum-silicon composite prefabricated member and preparation method thereof |
| CN117209259B (en) * | 2023-08-10 | 2024-03-08 | 山东理工大学 | Aluminum-silicon composite prefabricated member and preparation method thereof |
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