CN110981511A - High-temperature-corrosion-resistant sagger and preparation method thereof - Google Patents
High-temperature-corrosion-resistant sagger and preparation method thereof Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 44
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 39
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 39
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000007797 corrosion Effects 0.000 claims abstract description 30
- 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 28
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 28
- 239000000919 ceramic Substances 0.000 claims abstract description 27
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 22
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 21
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 21
- 239000010936 titanium Substances 0.000 claims abstract description 21
- 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 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 239000011819 refractory material Substances 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 1
- 239000005543 nano-size silicon particle Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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- 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
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- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
The invention discloses a high-temperature corrosion resistant sagger and a preparation method thereof, belonging to the field of materials. Comprises 5-10 parts of mullite, 30-50 parts of silicon carbide, 20-30 parts of silicon dioxide, 1-5 parts of nano titanium, 5-10 parts of ceramic particles, 1-5 parts of zirconia, 3-5 parts of silicon boride and 1-5 parts of alumina. The preparation method comprises the steps of melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry; and forming, sintering and cooling the high-temperature slurry to obtain the high-temperature-resistant high-performance ceramic material. The high-temperature-resistant sagger has good corrosion-resistant and high-temperature-resistant effects, can effectively improve the thermal stability of the material, greatly reduces the re-burning linear shrinkage rate of the refractory material, improves the fire resistance of the sagger, and prolongs the service life of the sagger; the service life of the sagger is 2.8-3 times longer than that of the conventional common sagger.
Description
Technical Field
The invention relates to the field of materials, in particular to a high-temperature corrosion resistant sagger and a preparation method thereof.
Background
Silicon carbide is chemically stable, has a high thermal conductivity, a small thermal expansion coefficient and good wear resistance, for example: the silicon carbide powder is coated on the inner wall of a water turbine impeller or a cylinder body by a special process, so that the wear resistance of the water turbine impeller or the cylinder body can be improved, and the service life of the water turbine impeller or the cylinder body is prolonged by 1-2 times; the high-grade refractory material has the advantages of thermal shock resistance, small volume, light weight, high strength and good energy-saving effect. The low-grade silicon carbide (containing SiC about 85%) is an excellent deoxidizer, and can be used for speeding up steel-making, easily controlling chemical composition and raising steel quality. In addition, silicon carbide is also used in great quantity to make silicon carbide rod for electric heating element. Therefore, in order to improve the high-temperature resistance, silicon carbide is often used for preparing the saggar of the lithium battery positive electrode material, so that the high-temperature resistance of the saggar is improved. However, the sagger of the lithium battery positive electrode material still has the problem of poor erosion resistance, the lithium battery positive electrode material for roasting is mostly in a powder shape and has strong permeability, lithium ions in the material belong to strong alkaline substances, the strong alkaline substances have strong erosion to the sagger material, and in the roasting process of the lithium battery positive electrode material, because the lithium ions can separate out ions such as Si, Al and Mg in the sagger in the contact process of the lithium ions and the sagger, the microstructure of the sagger is damaged, the sagger is eroded, and the service life of the sagger is obviously shortened. Meanwhile, the saggar is repeatedly used at the high temperature of 2000-2500 ℃, and can be discarded after being used for 20-30 times. Meanwhile, because the oxidation performance of the oxide in the sagger is high, and the sagger also has the characteristics of strong acid and strong alkali, the sagger is easy to corrode. The service life of the sagger is greatly reduced due to high-temperature strong corrosion.
At present, in order to improve the corrosion resistance of the sagger, a common mode is to coat a layer of anticorrosive material on the surface of the sagger; the silicon carbide coating disclosed in publication No. CN110452605A comprises 30-40% of silicon carbide powder, 20-30% of waterborne polyurethane, 10-20% of polyacrylate, 5-15% of organic metal salt, 1-10% of attapulgite, 1-5% of cellulose derivative, 1-5% of water-based wetting agent and 1-5% of methanol. In the high temperature reaction of the sagger, the crystal water in the organic matter is easy to evaporate, and the organic matter is in a molten state; the coating is easy to fall off, and the anti-corrosion effect is influenced; meanwhile, the dropped coating affects the conductivity of the electrode. The sagger material mainly comprises 8-10 parts of kaolin, 7-9 parts of talc, 4-6 parts of alumina, 22-28 parts of corundum with the particle size of 10-40 mu m, 45-58 parts of corundum with the particle size of 0.1-0.8mm, 18-30 parts of 500-mesh silicon carbide with the particle size of 300-; the talc contains 55% by mass of silica and 35% by mass of magnesium oxide. The preparation method comprises the steps of mixing water, and simultaneously adding a bonding agent, wherein the bonding agent is pulp waste liquid or polyvinyl alcohol or dextrin. Although the binding agent has the standing function at normal temperature, the binding agent is easy to be pasted at high temperature, inorganic matters are difficult to be bonded together, and the quality of the sagger is reduced.
In summary, in the prior art, although silicon carbide is used for corrosion prevention and high temperature resistance of the saggar, the silicon carbide corrosion-resistant material used as a coating mode is easy to fall off, and the corrosion prevention effect is influenced; the additive sagger has poor adhesive effect, and gaps and bubbles are easily generated, so that the quality of the sagger is influenced.
Disclosure of Invention
In order to solve the above problems, the present invention proposes a sagger capable of withstanding ultra-high temperatures while improving corrosion resistance.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the high-temperature corrosion resistant sagger comprises the following components in parts by weight: 5-10 parts of mullite, 30-50 parts of silicon carbide, 20-30 parts of silicon dioxide, 1-5 parts of nano titanium, 5-10 parts of ceramic particles, 1-5 parts of zirconium oxide, 3-5 parts of silicon boride and 1-5 parts of aluminum oxide.
Further, the high-temperature corrosion resistant sagger comprises the following components in parts by weight: 8-10 parts of mullite, 40-50 parts of silicon carbide, 25-30 parts of silicon dioxide, 2-3 parts of nano titanium, 5-8 parts of ceramic particles, 1-3 parts of zirconium oxide, 3-4 parts of silicon boride and 2-3 parts of aluminum oxide.
Further, the high-temperature corrosion resistant sagger comprises the following components in parts by weight: 10 parts of mullite, 45 parts of silicon carbide, 28 parts of nano silicon dioxide, 2.5 parts of nano titanium, 6 parts of ceramic particles, 2 parts of zirconia, 3.5 parts of silicon boride and 2 parts of alumina.
Further, the particle size of the mullite is 400-500 meshes.
Further, the particle size of the silicon carbide is 400-500 meshes.
Further, the particle size of the ceramic particles is 150-180 meshes.
The preparation method of the high-temperature corrosion resistant sagger comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, firing the molded green blank in a sintering furnace under the protection of nitrogen to obtain the sagger, and cooling to room temperature.
Further, the sintering temperature in the step (2) is 1350-.
The high-temperature corrosion resistant sagger and the preparation method thereof have the beneficial effects that:
(1) the method takes silicon carbide as a base material, and mullite, nano titanium, zirconia and silicon boride are added simultaneously; the coating has good anti-corrosion effect and can bear high temperature of more than 1500 ℃;
(2) in the preparation method, fused silicon dioxide is used as a solvent and is mixed with other materials; good fluidity, uniform mixing, good connectivity among the substances after cooling, less air bubbles and excellent sagger quality.
(3) The added material has good anticorrosion effect and high temperature resistance, and particularly has the advantages of effectively improving the thermal stability of the material, greatly reducing the re-firing line shrinkage rate of the refractory material, improving the refractory performance of the sagger and prolonging the service life of the sagger by mixing silicon carbide, zirconium oxide and silicon boride; the service life of the sagger is 2.8-3 times longer than that of the conventional common sagger.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
Example 1
The high-temperature corrosion resistant sagger comprises the following components in parts by weight: 5 parts of mullite, 30 parts of silicon carbide, 20 parts of nano silicon dioxide, 1 part of nano titanium, 5 parts of ceramic particles, 1 part of zirconia, 3 parts of silicon boride and 1 part of alumina.
The grain diameter of the mullite is 500 meshes;
the grain diameter of the silicon carbide is 500 meshes;
the particle size of the ceramic particles is 150 meshes;
the preparation method of the high-temperature corrosion resistant sagger in the embodiment comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, sintering the molded green body in a sintering furnace at the temperature of 1350-1400 ℃ in a nitrogen environment to obtain the sagger, and cooling to room temperature.
Example 2
The high-temperature corrosion resistant sagger comprises the following components in parts by weight: 10 parts of mullite, 50 parts of silicon carbide, 30 parts of nano silicon dioxide, 5 parts of nano titanium, 10 parts of ceramic particles, 5 parts of zirconia, 5 parts of silicon boride and 1 part of alumina.
The grain diameter of the mullite is 500 meshes;
the grain diameter of the silicon carbide is 500 meshes;
the particle size of the ceramic particles is 150 meshes;
the preparation method of the high-temperature corrosion resistant sagger in the embodiment comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, sintering the molded green body in a sintering furnace at the temperature of 1350-1400 ℃ in a nitrogen environment to obtain the sagger, and cooling to room temperature.
Example 3
The high-temperature corrosion resistant sagger comprises the following components in parts by weight: 6 parts of mullite, 35 parts of silicon carbide, 22 parts of nano silicon dioxide, 4 parts of nano titanium, 8 parts of ceramic particles, 4 parts of zirconia, 5 parts of silicon boride and 2 parts of alumina.
The grain diameter of the mullite is 500 meshes;
the grain diameter of the silicon carbide is 500 meshes;
the particle size of the ceramic particles is 150 meshes;
the preparation method of the high-temperature corrosion resistant sagger in the embodiment comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, sintering the molded green body in a sintering furnace at the temperature of 1450 and 1500 ℃ in a nitrogen environment to obtain the sagger, and cooling to room temperature.
Example 4
The high-temperature corrosion resistant sagger comprises the following components in parts by weight: 8 parts of mullite, 40 parts of silicon carbide, 25 parts of nano silicon dioxide, 2 parts of nano titanium, 5 parts of ceramic particles, 3 parts of zirconia, 4 parts of silicon boride and 2 parts of alumina.
The grain diameter of the mullite is 500 meshes;
the grain diameter of the silicon carbide is 500 meshes;
the particle size of the ceramic particles is 150 meshes;
the preparation method of the high-temperature corrosion resistant sagger in the embodiment comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, sintering the molded green body in a sintering furnace at the temperature of 1350-1400 ℃ in a nitrogen environment to obtain the sagger, and cooling to room temperature.
Example 5
The high-temperature corrosion resistant sagger comprises the following components in parts by weight: 10 parts of mullite, 45 parts of silicon carbide, 28 parts of nano silicon dioxide, 2.5 parts of nano titanium, 6 parts of ceramic particles, 2 parts of zirconia, 3.5 parts of silicon boride and 2 parts of alumina.
The grain diameter of the mullite is 500 meshes;
the grain diameter of the silicon carbide is 500 meshes;
the particle size of the ceramic particles is 150 meshes;
the preparation method of the high-temperature corrosion resistant sagger in the embodiment comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, sintering the molded green body in a sintering furnace at the temperature of 1400-1450 ℃ in a nitrogen environment to obtain the sagger, and cooling to room temperature.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
Claims (8)
1. A high temperature corrosion resistant sagger is characterized in that: the paint comprises the following components in parts by weight: 5-10 parts of mullite, 30-50 parts of silicon carbide, 30-40 parts of silicon dioxide, 1-5 parts of nano titanium, 5-10 parts of ceramic particles, 1-5 parts of zirconium oxide, 3-5 parts of silicon boride and 1-5 parts of aluminum oxide.
2. The high temperature corrosion resistant sagger of claim 1, wherein: the paint comprises the following components in parts by weight: 8-10 parts of mullite, 40-50 parts of silicon carbide, 25-30 parts of silicon dioxide, 2-3 parts of nano titanium, 5-8 parts of ceramic particles, 1-3 parts of zirconium oxide, 3-4 parts of silicon boride and 2-3 parts of aluminum oxide.
3. The high temperature corrosion resistant sagger of claim 1, wherein: the paint comprises the following components in parts by weight: 10 parts of mullite, 45 parts of silicon carbide, 28 parts of silicon dioxide, 2.5 parts of nano titanium, 6 parts of ceramic particles, 2 parts of zirconia, 3.5 parts of silicon boride and 2 parts of alumina.
4. The high temperature corrosion resistant sagger of any one of claims 1-3, wherein: the grain diameter of the mullite is 400-500 meshes.
5. The high temperature corrosion resistant sagger of any one of claims 1-3, wherein: the grain diameter of the silicon carbide is 400-500 meshes.
6. The high temperature corrosion resistant sagger of any one of claims 1-3, wherein: the particle size of the ceramic particles is 150-180 meshes.
7. A method for preparing the high temperature corrosion resistant sagger according to claim 1, wherein: the method comprises the following steps:
(1) melting silicon dioxide; adding mullite, silicon carbide, nano titanium and ceramic particles in parts by weight under the protection of nitrogen, and fully mixing zirconia, silicon boride and alumina to obtain high-temperature slurry;
(2) and pouring the high-temperature slurry into a sagger mold for molding, firing the molded green blank in a sintering furnace under the protection of nitrogen to obtain the sagger, and cooling to room temperature.
8. The method of making a high temperature corrosion resistant sagger as claimed in claim 7, wherein: the sintering temperature is 1350-.
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| CN112456982A (en) * | 2020-12-16 | 2021-03-09 | 刘永杰 | Formula and method for preparing sagger for lithium battery positive electrode material |
| CN112897995A (en) * | 2020-11-21 | 2021-06-04 | 江阴誉球耐火材料有限公司 | Anhydrous fire-resistant stemming and preparation method thereof |
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