CN114133227A - Long-life wire laying plate and preparation method thereof - Google Patents
Long-life wire laying plate and preparation method thereof Download PDFInfo
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- CN114133227A CN114133227A CN202111493586.6A CN202111493586A CN114133227A CN 114133227 A CN114133227 A CN 114133227A CN 202111493586 A CN202111493586 A CN 202111493586A CN 114133227 A CN114133227 A CN 114133227A
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- 238000002360 preparation method Methods 0.000 title description 5
- 239000000843 powder Substances 0.000 claims abstract description 22
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 18
- 239000010431 corundum Substances 0.000 claims abstract description 18
- 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 15
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 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 14
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000007767 bonding agent Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 235000015895 biscuits Nutrition 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 6
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000005245 sintering Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
-
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a long-life wire laying plate which is characterized in that 50-65 wt% of 1.0-0.088mm fused mullite particles, 10-22 wt% of 0.5-0.088mm tabular corundum particles, 10-20 wt% of 325-mesh tabular corundum fine powder and 8-15 wt% of alumina micropowder are used as raw materials, and 0.1-0.5% of ZrO micropowder is additionally arranged2Micro powder, and a bonding agent accounting for 4-8 wt% of the raw material.
Description
Technical Field
The invention relates to the field of refractory materials, in particular to a long-service-life wire laying plate and a preparation method thereof.
Background
The nitrogen pusher kiln for sintering the soft magnetic ferrite usually adopts an up-and-down heating mode, the lower silicon-molybdenum rod is arranged on a refractory brick below the guide rail, and the silicon-molybdenum rod is not easy to deform and damage and has a relatively long service life because the lower foundation is firmer. The upper silicon-molybdenum rod is placed on a refractory wire-resting plate, which cannot be made generally too thick, typically 20mm thick, with the usual dimensions of 220 x 430 x 20mm, due to the need to take into account the efficiency of the heat transfer to the kiln chamber. The wire laying plates on the market are all produced by adopting a mode of common corundum-mullite products, fused white corundum and fused mullite are used as aggregates, alumina micro powder and silicon micro powder or clay are used as base materials, the materials are pressed and sintered to form the wire laying plates, and the base materials react at high temperature to generate a mullite binding phase. The soft magnetic ferrite is Fe2O3The ferrimagnetic oxides as the main components include Mn-Zn, Ni-Zn and the like. In high-temperature use, Mn, Zn and the like are easy to react with a matrix part of the wire laying plate to generate low-melting matters, so that the wire laying plate is softened, and the service life is only 1 year.
Disclosure of Invention
In view of the deficiencies of the prior art, the present invention provides: a long-life wire laying plate and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the long-service-life wire laying plate adopts the technical scheme that 50-65 wt% of 1.0-0.088mm electrofused mullite particles, 10-22 wt% of 0.5-0.088mm tabular corundum particles, 10-20 wt% of 325-mesh tabular corundum fine powder and 8-15 wt% of alumina micropowder are used as raw materials, and 0.1-0.5% of ZrO micropowder is additionally added2Micro powder, and a bonding agent accounting for 4-8 wt% of the raw material.
Preferably, the content of alumina in the electrofused mullite is more than or equal to 75 percent, and the content of sodium oxide in the electrofused mullite is less than or equal to 0.25 percent.
Preferably, the plate-shaped corundum has the aluminum oxide content of more than or equal to 99.3 percent and the sodium oxide content of less than or equal to 0.25 percent.
Preferably, the content of the alumina micro powder D50 is less than or equal to 2um, the content of the alumina is more than or equal to 99.5 percent, and the content of the sodium oxide is less than or equal to 0.15 percent.
Preferably, the ZrO2The micro powder D50 is not more than 1um, the content of zirconia is not less than 99 percent, and the micro powder is in a monoclinic structure.
Preferably, the binder is an aqueous solution of one of PVA or water-soluble resin.
Preferably, the processing steps are as follows:
1) mixing materials: putting various raw materials and a bonding agent into a mixer according to mass percent and mixing uniformly;
2) molding: weighing the prepared materials according to the single weight of the biscuit, pouring the weighed materials into a mold, and molding by using a vibration molding machine or a hydraulic machine;
3) drying: naturally drying the formed biscuit for 1-2 days, and then drying the biscuit in a drying kiln at the temperature of 150-200 ℃ for 12-24 hours;
4) and (3) firing: and (4) after drying, preserving heat for 4-8 hours at 1700-1780 ℃ to obtain the long-life wire laying plate.
Compared with the prior art, the long-service-life wire laying plate and the preparation method thereof have the beneficial effects that:
1. the fused mullite has low impurity content, good needle crystal development and excellent high-temperature creep resistance, and a small amount of liquid phase in the fused mullite grains seeps out to react and sinter with alumina powder at high temperature, so that the structural strength of the product is improved;
2. the plate-shaped corundum belongs to a sintering raw material, has higher activity compared with electric-melting white corundum, and generates strong sintering between plate-shaped corundum particles and fine powder when being sintered at high temperature;
3. adding zirconia micro powder to activate crystal lattices, promoting sintering among crystal phases and endowing the material with excellent creep resistance;
4. the matrix is highly purified, silicon micropowder and clay are not added, the corrosion of Mn-Zn is effectively inhibited, and the corrosion resistance of the material is improved, so that the wire shelf board prepared by the invention has better creep resistance and chemical stability, basically does not react with the atmosphere in a kiln, does not soften, does not drop slag, and has a service life of 2-3 years.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
50 wt% of 1.0-0.088mm fused mullite particles, 22 wt% of 0.5-0.088mm tabular corundum particles, 20 wt% of 325 mesh tabular corundum fine powder and 8 wt% of alumina micropowder as raw materials, and 0.1% of ZrO in addition2Micro powder, adding a bonding agent accounting for 4 wt% of the raw material, uniformly mixing, forming by mechanical pressing, drying, and then preserving heat for 4 hours at 1780 ℃ to obtain the long-life wire laying plate.
Example 2:
60 wt% of 1.0-0.088mm fused mullite particles, 15 wt% of 0.5-0.088mm tabular corundum particles, 10 wt% of 325 mesh tabular corundum fine powder and 15 wt% of alumina micropowder as raw materials, and 0.3% of ZrO in addition2Micro powder, adding 8 wt% of binding agent of the raw material, uniformly mixing, forming by mechanical pressing, drying, and then preserving heat for 6 hours at 1750 ℃ to prepare the long-life wire laying plate.
Example 3:
65 wt% of 1.0-0.088mm fused mullite particles, 10 wt% of 0.5-0.088mm tabular corundum particles, 15 wt% of 325 mesh tabular corundum fine powder and 10 wt% of alumina micropowder as raw materials, and 0.5% of ZrO micropowder2Micro powder, adding a bonding agent accounting for 6 wt% of the raw material, uniformly mixing, performing mechanical compression molding, drying, and then performing heat preservation for 8 hours at 1700 ℃ to obtain the long-life wire laying plate.
Compared with the prior art, the specific implementation mode has the following positive effects:
the wire laying plate prepared by the invention has better creep resistance and chemical stability, basically does not react with the atmosphere in a kiln, does not soften or drop slag, and has a service life of 2-3 years.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. The long-life wire laying plate is characterized in that 50-65 wt% of 1.0-0.088mm electrofused mullite particles, 10-22 wt% of 0.5-0.088mm tabular corundum particles, 10-20 wt% of 325-mesh tabular corundum fine powder and 8-15 wt% of alumina micropowder are used as raw materials, and 0.1-0.5% of ZrO micropowder is additionally added2Micro powder, and a bonding agent accounting for 4-8 wt% of the raw material.
2. The long-life wire shelf according to claim 1, wherein the content of alumina in the electrofused mullite is not less than 75%, and the content of sodium oxide in the electrofused mullite is not more than 0.25%.
3. The long-life wire shelf according to claim 1, wherein the plate-like corundum has an alumina content of 99.3% or more and a sodium oxide content of 0.25% or less.
4. The long-life wire shelf board as claimed in claim 1, wherein the alumina micropowder D50 is not more than 2um, the alumina content is not less than 99.5%, and the sodium oxide content is not more than 0.15%.
5. The long life wire shelf of claim 1, wherein said ZrO is2The micro powder D50 is not more than 1um, the content of zirconia is not less than 99 percent, and the micro powder is in a monoclinic structure.
6. The long life wire shelf of claim 1, wherein said binder is an aqueous solution of PVA or a water soluble resin.
7. The method for preparing the long-life wire shelf board as claimed in claim 1, wherein the processing steps are as follows:
1) mixing materials: putting various raw materials and a bonding agent into a mixer according to mass percent and mixing uniformly;
2) molding: weighing the prepared materials according to the single weight of the biscuit, pouring the weighed materials into a mold, and molding by using a vibration molding machine or a hydraulic machine;
3) drying: naturally drying the formed biscuit for 1-2 days, and then drying the biscuit in a drying kiln at the temperature of 150-200 ℃ for 12-24 hours;
4) and (3) firing: and (4) after drying, preserving heat for 4-8 hours at 1700-1780 ℃ to obtain the long-life wire laying plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111493586.6A CN114133227A (en) | 2021-12-08 | 2021-12-08 | Long-life wire laying plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111493586.6A CN114133227A (en) | 2021-12-08 | 2021-12-08 | Long-life wire laying plate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114133227A true CN114133227A (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111493586.6A Pending CN114133227A (en) | 2021-12-08 | 2021-12-08 | Long-life wire laying plate and preparation method thereof |
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| CN (1) | CN114133227A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763465A (en) * | 2004-10-21 | 2006-04-26 | 宜兴市炉顶密封工程公司耐火保温厂 | Push plate of nitrogen kiln for sintering soft magnetic ferrite |
| CN102032794A (en) * | 2010-12-20 | 2011-04-27 | 江苏三恒高技术窑具有限公司 | Platen for sintering soft ferrite in nitrogen kiln |
| CN102219535A (en) * | 2011-04-22 | 2011-10-19 | 瑞泰科技股份有限公司 | Recombined magnesia-alumina spinel brick with properties of nodulation and blockage prevention and high corrosion resistance, and production technology thereof |
| WO2012174839A1 (en) * | 2011-06-21 | 2012-12-27 | 中国铝业股份有限公司 | Refractory and anti-corrosion material of indefinite form for inert anode aluminum electrolytic tank and method for manufacturing same |
| CN103922761A (en) * | 2014-03-18 | 2014-07-16 | 威远县德胜耐材有限公司 | Low-zirconium mullite draft tube brick and preparation method thereof |
| CN109336575A (en) * | 2018-10-26 | 2019-02-15 | 淄博工陶耐火材料有限公司 | One kind re-sintering electric cast mullite brick and preparation method thereof containing zirconium |
| CN110981446A (en) * | 2019-12-12 | 2020-04-10 | 江苏三恒高技术窑具有限公司 | Volume-stable high-temperature bedplate and manufacturing method thereof |
-
2021
- 2021-12-08 CN CN202111493586.6A patent/CN114133227A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763465A (en) * | 2004-10-21 | 2006-04-26 | 宜兴市炉顶密封工程公司耐火保温厂 | Push plate of nitrogen kiln for sintering soft magnetic ferrite |
| CN102032794A (en) * | 2010-12-20 | 2011-04-27 | 江苏三恒高技术窑具有限公司 | Platen for sintering soft ferrite in nitrogen kiln |
| CN102219535A (en) * | 2011-04-22 | 2011-10-19 | 瑞泰科技股份有限公司 | Recombined magnesia-alumina spinel brick with properties of nodulation and blockage prevention and high corrosion resistance, and production technology thereof |
| WO2012174839A1 (en) * | 2011-06-21 | 2012-12-27 | 中国铝业股份有限公司 | Refractory and anti-corrosion material of indefinite form for inert anode aluminum electrolytic tank and method for manufacturing same |
| CN103922761A (en) * | 2014-03-18 | 2014-07-16 | 威远县德胜耐材有限公司 | Low-zirconium mullite draft tube brick and preparation method thereof |
| CN109336575A (en) * | 2018-10-26 | 2019-02-15 | 淄博工陶耐火材料有限公司 | One kind re-sintering electric cast mullite brick and preparation method thereof containing zirconium |
| CN110981446A (en) * | 2019-12-12 | 2020-04-10 | 江苏三恒高技术窑具有限公司 | Volume-stable high-temperature bedplate and manufacturing method thereof |
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Application publication date: 20220304 |
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