CN116553917A - Disassembly-free module for pouring iron runner and preparation method thereof - Google Patents
Disassembly-free module for pouring iron runner and preparation method thereof Download PDFInfo
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- CN116553917A CN116553917A CN202310134262.6A CN202310134262A CN116553917A CN 116553917 A CN116553917 A CN 116553917A CN 202310134262 A CN202310134262 A CN 202310134262A CN 116553917 A CN116553917 A CN 116553917A
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- disassembly
- free module
- iron runner
- powder
- casting
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 36
- 239000004568 cement Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 27
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 23
- 239000010431 corundum Substances 0.000 claims abstract description 23
- 239000011230 binding agent Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 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 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- 239000011268 mixed slurry Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000007767 bonding agent Substances 0.000 claims description 7
- 239000011863 silicon-based powder Substances 0.000 claims description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 claims description 5
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 8
- 238000009415 formwork Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 230000003064 anti-oxidating effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 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 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000007676 flexural strength test Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5048—Phosphates
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
- C04B2235/9615—Linear firing shrinkage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
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- Inorganic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The application relates to the field of iron runner processing, and specifically discloses a disassembly-free module for iron runner casting and a preparation method thereof, wherein the disassembly-free module is used as an inner peripheral wall of an iron runner, and the preparation raw materials of the disassembly-free module comprise the following components in percentage by mass: brown corundum particles: 50-60%; plate-like corundum particles: 20-10%; plate-shaped corundum fine powder: 5-10%; silicon carbide powder: 8-10%; alumina micropowder: 5-8%; and (3) cement: 3-5%; a sik-z binding agent: 1-2%; 0.15-0.2% of water reducer. The disassembly-free module of the iron runner inner wall has the advantages that the later disassembly operation of the inner die is avoided, and the disassembly-free module meets the use requirement of the inner die and has excellent use performance as the iron runner inner wall.
Description
Technical Field
The application relates to the field of iron runner processing, in particular to a disassembly-free module for iron runner casting and a preparation method thereof.
Background
The tapping spout of the blast furnace is an essential component in blast furnace iron production and functions to flow molten iron in the blast furnace from the tap hole of the blast furnace into the ladle. At present, the preparation technology of most blast furnace tapping runners adopts castable to carry out integral casting on site; the inner template in the casting process is usually a steel plate, and the casting material is added between the inner template and the outer template, so that a casting body can be formed after solidification, and then an iron runner is formed.
However, in the existing iron runner casting process, the inner template must be removed after the iron runner casting is completed, so that the labor intensity is increased, the casting structure is easily damaged in the removal process, and the casting quality of the iron runner is reduced.
Disclosure of Invention
In order to reduce the casting quality reduction of the iron runner caused by removing the inner template and reduce the labor intensity, the application provides a disassembly-free module for iron runner casting and a preparation method thereof.
In a first aspect, the present application provides a disassembly-free module for pouring an iron runner, which adopts the following technical scheme:
the disassembly-free module is used for pouring an iron runner and is used as the inner peripheral wall of the iron runner, and the disassembly-free module comprises the following preparation raw materials in percentage by mass: brown corundum particles: 50-60%; plate-like corundum particles: 20-10%; plate-shaped corundum fine powder: 5-10%; silicon carbide powder: 8-10%; alumina micropowder: 5-8%; and (3) cement: 3-5%; a sik-z binding agent: 1-2%; 0.15-0.2% of water reducer.
By adopting the technical scheme, the disassembly-free module is obtained by casting by utilizing the components; when the iron runner is poured, the disassembly-free module is used as an inner die and is directly combined with the pouring body after the pouring material is solidified, so that the disassembly-free module is used as the inner side wall of the iron runner, the later disassembly of the inner die is avoided, the labor intensity is reduced, the damage to the pouring body is reduced, and the influence on the quality of the iron runner is reduced. Meanwhile, in order to enable the disassembly-free module to work better after being used as the inner side wall of the iron runner, the composition of the disassembly-free module is researched. Firstly, the disassembly-free module is directly used as a part of an iron runner and is in contact with molten iron, and the high temperature effect is required to be continuously exerted, so that the expansion coefficient of the disassembly-free module and the expansion coefficient of a casting body are not excessively different, and in addition, the cost problem is considered, and the disassembly-free module is made of materials similar to the casting body. However, in view of the environment and method of use of the disassembly-free module, such as lifting and transportation, the strength of the casting material must not be too low; it is known in the art that element C affects the strength of the cast product, and therefore the carbon content of the disassembly-free module is adjusted in the present application, but the end result is not very desirable. Later, the inventor conducts a great deal of research, cement and a Sik-z bonding agent with a specified proportion are added while the content of the element C is regulated, and the cement and the Sik-z bonding agent are matched to form a high-efficiency bonding agent, so that the disassembly-free module has excellent strength; in addition, in the process of taking the disassembly-free module as the inner side wall of the iron runner, because the iron slag density is different, the molten iron is below, the disassembly-free module is in contact with molten iron for a long time and large in area, and the iron runner has good iron resistance under the formula of the application. Therefore, the disassembly-free module not only avoids the disassembly operation of the inner die in the later period, but also meets the use requirement of the inner die, and has excellent performance as the inner side wall of the iron runner.
Preferably, in the raw materials of the disassembly-free module, the mass percentage of cement is 4.1%, and the mass percentage of the Siek-z bonding agent is 1.7%.
By adopting the technical scheme, when cement is used as a binding agent, although the cement has good early strength, under the high-temperature condition, the cement and other components can form a low-melting-point phase under the action of the cement, so that the high-temperature strength of the disassembly-free module is reduced; the Sier-z binder is a novel castable binder and has good high-temperature strength, but the Sier-z binder has poor early strength and is unfavorable for the use of the disassembly-free module. And the Saik-z bond and cement can have complex physical and chemical actions with other components in a curing and high temperature environment. Through a great deal of researches, the inventor limits the dosage of cement to 3-5%, limits the content of a Sik-z bonding agent to 1-2%, and cooperates with other components, and the inventor finds that the prepared disassembly-free module has excellent early strength and high-temperature strength, and also has excellent iron resistance and other performances. In particular, when the mass percentage of cement is 4.1% and the mass percentage of the Saik-z bonding agent is 1.7%, the strength of the disassembly-free module is optimal.
Preferably, the granularity of the brown corundum particles is 8-0mm, and the granularity of the platy corundum particles is 3-0mm. Further preferably, the particle size of the plate-shaped corundum fine powder is 300-320 meshes, the particle size of the silicon carbide powder is 200-210 meshes, and the particle size of the alumina fine powder is 2-2.1 microns.
By adopting the technical scheme, the powder has proper granularity or grain size, so that each component is uniformly distributed, the chemical and physical effects among the components are facilitated, and the performance of the disassembly-free module is further improved.
Preferably, the water reducer is a PC type polycarboxylate water reducer.
In a second aspect, the present application provides a method for manufacturing a disassembly-free module for pouring an iron runner, which adopts the following technical scheme:
the preparation method of the disassembly-free module for pouring the iron runner comprises the following steps: and (3) uniformly mixing all the powder, adding water accounting for 4-4.5% of the total mass of the powder, uniformly mixing to obtain mixed slurry, and casting to obtain the disassembly-free module.
Further, the disassembly-free module comprises an inner template serving as the inner peripheral wall of the iron runner, and further comprises a lug and a buckle plate, wherein the lug is arranged on the outer side wall of the inner template, and the buckle plate is arranged on the end walls at the two ends of the inner template; the tail ends of the inner templates are sequentially opposite; the side wall of any buckle plate is attached to the side wall of the adjacent buckle plate along the direction perpendicular to the opposite directions of the two inner templates.
By adopting the technical scheme, the contact area between the inner template and the casting body can be enlarged by the convex blocks, and the limit can be formed in the casting body, so that the connection strength between the inner template and the casting body is improved, and the service life of the iron runner is prolonged. In addition, the arrangement of the buckle plates can reduce leakage of casting materials between adjacent inner templates in the casting process of the iron runner.
Preferably, after the mixed slurry is cured, the surface of the cured body is sprayed with an antioxidant coating to obtain the disassembly-free module.
By adopting the technical scheme, the surface of the module is subjected to anti-oxidation treatment, so that the material oxidation of the iron runner material in the baking process is reduced, and the service life of the casting body is prolonged.
Preferably, after the mixed slurry is cured, an adhesive is coated on the surface of the cured body to obtain the disassembly-free module, and the preparation method of the adhesive comprises the following steps:
reacting aluminum hydroxide with 60-65wt% phosphoric acid solution at 87-90deg.C, wherein the molar ratio of aluminum hydroxide to phosphoric acid is 1:0.86-0.91; and adding silicon powder, carbon fiber powder and aluminum fluoride initiator to mix after the viscosity of the reaction solution reaches 1800-1900mPa to obtain the adhesive. Wherein, the mass ratio of the reaction solution to the silicon powder to the carbon fiber powder is 50-52:4-5:14-15:2-3.
By adopting the technical scheme, the aluminum phosphate-based adhesive can be prepared, and the connection strength between the disassembly-free module and the casting body can be improved; the aluminum phosphate-based adhesive has excellent high temperature resistance, is suitable for the high temperature environment of an iron runner, can form mullite whiskers in the adhesive under the catalysis of an aluminum fluoride initiator in the high temperature environment in the process of taking the disassembly-free module as the inner side wall of the iron runner, can well improve the toughness and strength of an adhesive coating between the disassembly-free module and a casting body by combining the reinforcing effect of carbon fiber powder, and can well improve the bonding strength between the disassembly-free module and the casting body, so that the disassembly-free module and the casting body are 'grown into a whole', and the service life of the disassembly-free module is prolonged.
In summary, the present application has the following beneficial effects:
1. compared with the traditional iron mold, the disassembly-free mold is light in weight, convenient to install and carry, reduces labor intensity of workers, and improves construction quality.
2. The disassembly-free module in the application is directly used as the inner side wall of the iron runner, and the mould is not required to be disassembled after casting is completed, so that the construction time is shortened.
3. The disassembly-free module can be produced by manufacturers without being cast on site, the quality can be strictly controlled, and the service life is prolonged.
4. The disassembly-free module prepared by the formula has good high-temperature strength and iron resistance, improves the quality of casting the iron runner, increases the iron flux of the iron runner, reduces the material consumption of the iron runner material, and is energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic view of a disassembly-free module according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of two adjacent disassembly-free modules in an embodiment of the present application;
reference numerals: 1. an inner template; 2. a bump; 3. the buckle plate.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples.
Examples
The embodiment of the application provides a disassembly-free module for iron runner pouring, disassembly-free module is as the inner peripheral wall of iron runner, as shown in fig. 1 and 2, disassembly-free module structure is including being used as the interior form 1 of iron runner inner peripheral wall, disassembly-free module still includes lug 2 simultaneously, buckle 3, interior form 1 in this embodiment is the U type, lug 2 becomes bar and fixed connection on the lateral wall of interior form 1, the lug 2 of bar is arranged along the direction that the length direction of interior form 1 extends and is perpendicular to interior form 1 length. The pinch plate 3 is fixedly connected to the end walls at the two ends of the inner template 1. And the inner templates 1 are sequentially opposite in the casting process of the iron runner, and the side wall of any buckle plate 3 and the side wall of the adjacent buckle plate 3 are attached along the opposite direction perpendicular to the two inner templates 1. In this embodiment, two buckle plates 3 on one inner formwork 1 are close to the inner side of the inner formwork 1 and flush with the inner side wall of the inner formwork 1, and two buckle plates 3 on the other inner formwork 1 are close to the outer side of the inner formwork 1 and flush with the outer side wall of the inner formwork 1, and when two inner formworks 1 are butted, adjacent buckle plates 3 are opposite and fit along the inner and outer directions of the inner formworks 1.
The embodiment of the application also provides a preparation raw material of the disassembly-free module, which comprises the following components in percentage by mass: brown corundum particles: 50-60%; plate-like corundum particles: 20-10%; plate-shaped corundum fine powder: 5-10%; silicon carbide powder: 8-10%; oxygen gasAluminum powder: 5-8%; and (3) cement: 3-5%; a sik-z binding agent: 1-2%; 0.15-0.2% of water reducer. The Saik-Z bond is a composite bond developed by Rankine, namely Saik-ZZero). The cement is Saika 71 cement.
Wherein, the granularity of the brown corundum particles is 8-0mm, and the granularity of the plate-shaped corundum particles is 3-0mm. The grain size of the plate-shaped corundum fine powder is 300-320 meshes, the grain size of the silicon carbide powder is 200-210 meshes, and the grain size of the alumina fine powder is 2-2.1 microns.
The water reducer is a water reducer for refractory materials, and the water reducer in the embodiment can be a PC type polycarboxylate water reducer, in particular to a water reducer PC-200 sold in Lyocell chemical industry.
Meanwhile, the embodiment of the application also provides a preparation method of the disassembly-free module for casting the iron runner, which comprises the following steps: and (3) uniformly mixing all the powder, adding water accounting for 4-4.5% of the total mass of the powder, uniformly mixing to obtain mixed slurry, and casting to obtain the disassembly-free module. The water addition in this example was 4.5% of the total mass of the powder.
In addition, the thickness of the disassembly-free module is controlled to be 50-80mm, the length is 1000mm, the height is 700-1000mm (the height is calculated from the tapping hole to the skimming tool), the weight of each module is controlled to be 500-800kg, and the module is convenient to carry and splice.
Examples 1 to 10
Examples 1-10 differ in the raw material composition content of the disassembly-free modules, as shown in Table 1. Wherein the particle size of the plate-shaped corundum fine powder of examples 1-10 is 320 meshes, the particle size of the silicon carbide powder is 200 meshes, and the particle size of the alumina fine powder is 2.1 microns.
TABLE 1 component content tables (unit: kg) of examples 1 to 10
Example 11
Example 11 differs from example 1 in that: the particle size of the plate-shaped corundum fine powder is 300 meshes, the particle size of the silicon carbide powder is 210 meshes, and the particle size of the aluminum oxide fine powder is 2 microns.
Example 12
Example 12 differs from example 1 in that:
the preparation method of the disassembly-free module for pouring the iron runner comprises the following steps: and (3) uniformly mixing all the powder, adding water accounting for 4.5% of the total mass of the powder, uniformly mixing to obtain mixed slurry, mixing the mixed slurry, curing the mixed slurry, and coating the inner surface of a cured body with an anti-oxidation coating to obtain the disassembly-free module. The anti-oxidation coating can be a commercially available fire-resistant coating, and the anti-oxidation coating in the embodiment is a high-temperature anti-oxidation coating RLHY-31.
Example 13
Example 13 differs from example 1 in that: in the preparation process of the disassembly-free module, after the mixed slurry is solidified, the outer side wall of the solidified body is coated with an adhesive with the thickness of 0.1 mm. The preparation method of the adhesive in the embodiment comprises the following steps: reacting aluminum hydroxide with 65wt% phosphoric acid solution at a temperature of 87-90 ℃, wherein the molar ratio of aluminum hydroxide to phosphoric acid is 1:0.91; and adding silicon powder, carbon fiber powder and aluminum fluoride initiator to mix after the viscosity of the reaction solution reaches 1800-1900mPa to obtain the adhesive. Wherein, the grain diameter of the silicon powder is 1.2 microns, and the grain diameter of the carbon fiber powder is 1.5 microns; the mass ratio of the reaction solution, the silicon powder, the carbon fiber powder and the aluminum fluoride is 51:4.2:14.7:2.1. the specific amounts are shown in Table 2.
Examples 14 to 17
Examples 14-17 differ from example 13 in that: the raw materials used in the adhesive preparation process are different, and the specific amounts are shown in table 2.
TABLE 2 raw materials for preparing the adhesive of examples 13-17
Example 18
Example 18 differs from example 13 in that: the adhesive of example 18 is a commercially available aluminum dihydrogen phosphate adhesive.
Comparative example
Comparative example 1
Comparative example 1 and example 1 differ in that: cement was replaced with the same amount of the sik-z binder as cement.
Comparative example 2
Comparative example 2 is different from example 1 in that: the Saik-z binder is replaced with an equivalent amount of cement as the Saik-z binder.
Performance test
1. The following performance tests were performed on the disassembly-free modules prepared in examples 1-12 and comparative examples 1-2: the density of the disassembly-free module is detected according to the method in GB/T4513.6-2017 determination of physical properties of unshaped refractory materials, and the unit of detection results is as follows: g/cm 3 . The compressive strength of the disassembly-free module is detected according to the method in GB/T3001-2017 method for normal temperature flexural strength test, and the unit of the detection result is as follows: and (3) Mpa. According to the method in GB/T5072-2008 refractory material normal temperature compressive strength test method, the compressive strength of the disassembly-free module is detected, and the unit of the detection result is: and (3) Mpa. According to the scheme in GB/T16555-2017, chemical analysis method for refractory materials containing carbon, silicon carbide and nitride, the disassembly-free module is subjected to chemical component detection, and the detection result unit is as follows: percent of the total weight of the composition. The detection results are specifically shown in Table 3.
2. The disassembly-free modules of examples 13-18 are utilized to perform iron runner molding casting, and the casting material of the iron runner is Al 2 O 3 The SiC-C castable is prepared into samples with the length of 230mm, the width of 40mm and the height of 40mm, wherein the length of the iron runner castable is equal to the length of the disassembly-free module. And then the bending strength of the joint of the iron runner casting and the disassembly-free module in the sample is detected according to the method in GB/T3001-2017 method for normal temperature bending strength test.
TABLE 3 Performance test results Table for examples 1-12
Table 4 table for testing the flexural properties of examples 14-18
As shown by the detection results of examples 1-4, the disassembly-free module has good compressive strength and flexural strength, and meanwhile, the body density and the line change performance are excellent, and can be used as the inner side wall of an iron runner. In addition, the test results of comparative examples 5 and 6 show that the performance of the disassembly-free module is affected when the amounts of cement and the Saik-Z binder are changed on the premise that the overall amount of the binder is unchanged. Further analysis found that example 5 resulted in lower strength at lower temperatures of the tamper-free modules due to the reduced amount of cement and increased amount of the Sack-Z binder, which may be responsible for the reduced amount of cement used; however, even though the amount of the Saik-Z binder used in example 5 was large, the strength of example 5 was still inferior to that of example 1. In addition, for example 6, the greater use of visible cement resulted in superior lower temperature strength wall example 5 for the disassembly-free module, but still less good than example 1. This demonstrates that indeed cement is beneficial to the strength construction of the tamper-free module at lower temperatures and the Saik-Z binder is beneficial to the strength construction of the tamper-free module at higher temperatures. However, it is assumed from the performance of example 1 that there is a certain coordination relationship between the Saik-Z binder and the cement, so that the performance of example 1 is most excellent.
From the results of examples 7 and 8, it is clear that the overall amount of binder affects the performance of the tamper-free module, which may be due to a certain interaction between the Saik-Z binder and the cement with other components. It was also found from the results of the tests of examples 9 and 10 that the use of excessive amounts of the Sack-Z binder and cement negatively affected the performance of the tamper-free module. In addition, from the detection result of example 11, it was found that the particle size or granularity of each component affects the performance of the disassembly-free module. And the disassembly-free module performance of example 12 was found to be improved by applying the anti-oxidation coating.
Analysis of the properties of examples 13-15 and example 18 has found that the use of an adhesive can further improve the bond strength between the casting and the disassembly-free module, which is beneficial for subsequent use of the runner. Moreover, as is clear from the test results of examples 16 to 17, the amounts of the silica powder and the carbon fiber powder used affect the performance of the adhesive, wherein the influence of the silica powder is large.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (9)
1. The utility model provides a mould is exempted from to tear open with pouring of iron runner which characterized in that: the disassembly-free module is used as the inner peripheral wall of the iron runner, and the preparation raw materials of the disassembly-free module comprise the following components in percentage by mass: brown corundum particles: 50-60%; plate-like corundum particles: 20-10%; plate-shaped corundum fine powder: 5-10%; silicon carbide powder: 8-10%; alumina micropowder: 5-8%; and (3) cement: 3-5%; a sik-z binding agent: 1-2%; 0.15-0.2% of water reducer.
2. The disassembly-free module for pouring iron runner according to claim 1, wherein: in the raw materials of the disassembly-free module, the mass percentage of cement is 4.1 percent, and the mass percentage of the Siek-z bonding agent is 1.7 percent.
3. The disassembly-free module for pouring iron runner according to claim 1, wherein: the granularity of the brown corundum particles is 8-0mm, and the granularity of the platy corundum particles is 3-0mm.
4. The disassembly-free module for pouring iron runner according to claim 1, wherein: the particle size of the plate-shaped corundum fine powder is 300-320 meshes, the particle size of the silicon carbide powder is 200-210 meshes, and the particle size of the alumina fine powder is 2-2.1 microns.
5. The disassembly-free module for pouring iron runner according to claim 1, wherein: the water reducer is PC type polycarboxylate water reducer.
6. A method for manufacturing a disassembly-free module for casting iron runner according to any one of claims 1 to 5, characterized in that: the method comprises the following steps: and (3) uniformly mixing all the powder, adding water accounting for 4-4.5% of the total mass of the powder, uniformly mixing to obtain mixed slurry, and casting to obtain the disassembly-free module.
7. The method for manufacturing the disassembly-free module for casting the iron runner according to claim 6, wherein the method comprises the following steps: the disassembly-free module is prepared and comprises an inner template (1) serving as the inner peripheral wall of an iron runner, a protruding block (2) and a buckle plate (3), wherein the protruding block (2) is arranged on the outer side wall of the inner template (1), and the buckle plate (3) is arranged on the end walls of the two ends of the inner template (1); the inner templates (1) are sequentially opposite in ending; the side wall of any buckle plate (3) and the side wall of the adjacent buckle plate (3) are attached along the opposite direction perpendicular to the two inner templates (1).
8. The method for manufacturing the disassembly-free module for casting the iron runner according to claim 6, wherein the method comprises the following steps: and after the mixed slurry is solidified, spraying an antioxidant coating on the surface of the solidified body to obtain the disassembly-free module.
9. The method for manufacturing the disassembly-free module for casting the iron runner according to claim 6, wherein the method comprises the following steps: after the mixed slurry is solidified, an adhesive is coated on the outer side wall of a solidified body to obtain the disassembly-free module, and the preparation method of the adhesive comprises the following steps:
reacting aluminum hydroxide with 60-65wt% phosphoric acid solution at 87-90deg.C, wherein the molar ratio of aluminum hydroxide to phosphoric acid is 1:0.86-0.91; after the viscosity of the reaction solution reaches 1800-1900mPa, adding silicon powder, carbon fiber powder and aluminum fluoride initiator, and mixing to obtain an adhesive; wherein, the mass ratio of the reaction solution to the silicon powder to the carbon fiber powder is 50-52:4-5:14-15:2-3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116835970A (en) * | 2023-09-01 | 2023-10-03 | 北京利尔高温材料股份有限公司 | Iron runner castable capable of being quickly baked and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116835970A (en) * | 2023-09-01 | 2023-10-03 | 北京利尔高温材料股份有限公司 | Iron runner castable capable of being quickly baked and preparation method thereof |
| CN116835970B (en) * | 2023-09-01 | 2024-03-08 | 义马瑞辉新材料有限公司 | Iron runner castable capable of being quickly baked and preparation method thereof |
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