A high-temperature resistant and wear-resistant blanket

Abstract

This application discloses a high-temperature resistant and wear-resistant blanket. The preparation method of the high-temperature resistant and wear-resistant blanket of this application includes the following steps: S1, high-purity aluminosilicate fibers and silicon carbide mullite fibers are processed into a cotton blank through a cotton collection process; S2, the cotton blank is lightly sintered and shaped, and then cut to obtain a shaped cotton blank; S3, a silicon carbide slurry is prepared and coated onto the surface of the shaped cotton blank, ensuring that the slurry penetration thickness is more than 5 mm, to obtain a slurry-coated cotton blank; S4, the slurry-coated cotton blank is lightly sintered and shaped, and then needle-punched to form a blanket, to obtain a fiber blanket blank; S5, the fiber blanket blank obtained in step S4 is subjected to high-temperature sintering treatment to obtain a high-temperature resistant and wear-resistant blanket. The preparation process of this application is relatively simple, and it exhibits good high-temperature resistance, good thermal insulation performance, and good high-temperature wear resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refractory materials, in particular to a high-temperature-resistant and wear-resistant blanket. BACKGROUND

[0002] Industrial furnace mainly refers to a kind of heat energy equipment that utilizes the combustion of fuel in the equipment to convert chemical energy into heat energy, and utilizes the heat energy to heat workpieces to achieve production requirements. In the industrial furnace, the furnace lining is one of the core components, and its performance directly determines the performance, operation failure rate, operation efficiency and energy consumption of the industrial furnace. The furnace lining of the industrial furnace is generally made of refractory materials, and is a heat insulation component of the industrial furnace. According to the form of the furnace lining material, it can be divided into brick furnace lining, fiber furnace lining and unshaped material furnace lining.

[0003] With the advent of high-temperature refractory fibers, due to their low density, low heat loss, good heat insulation performance, long service life, no need to bake the furnace, easy installation and many other advantages, they have become the preferred material for industrial furnace linings. At present, the manufacture of various industrial furnaces, as well as the energy-saving reconstruction of old industrial furnaces, mostly use various refractory fiber blankets made of high-temperature refractory fiber materials. And the aluminum silicate fiber, because of its low price and excellent high-temperature resistance, has become the preferred fiber material for refractory fiber blankets. For example, high-purity aluminum silicate fiber needle blanket is a kind of refractory fiber blanket that is currently widely used. And due to different temperature requirements, high-aluminum aluminum silicate fiber needle blanket and zirconium-containing aluminum silicate fiber needle blanket also have very wide application in the field of industrial furnaces.

[0004] However, some special industrial furnaces have higher requirements for the wear resistance of the furnace lining. For example, the converter in the metallurgical field, when in operation, the furnace lining will be continuously scoured by molten steel, resulting in high-temperature scouring and wear. For another example, the cement kiln in the cement manufacturing field, during operation, the furnace lining will be scoured by clinker particles wrapped in high-pressure gas in the furnace, resulting in high-temperature scouring and wear. For such special industrial furnaces, the existing refractory fiber blankets with aluminum silicate fiber as the main component have certain defects in high-temperature wear resistance, and the service life is relatively short. SUMMARY

[0005] In order to solve at least one of the above technical problems, develop an industrial furnace lining material with relatively simple preparation process, good high-temperature resistance, good heat insulation performance, and also good high-temperature wear resistance, the present application provides a high-temperature-resistant and wear-resistant blanket.

[0006] In one aspect, the present application provides a preparation method of a high-temperature-resistant and wear-resistant blanket, comprising the following steps:

[0007] S1, high-purity aluminum silicate fiber and silicon carbide mullite fiber are made into a cotton blank through a cotton collecting process;

[0008] S2, the cotton base prepared in step S1 is lightly burned and shaped, and then cut to prepare a shaped cotton base;

[0009] S3, a silicon carbide slurry is configured, and the silicon carbide slurry is coated on the surface of the shaped cotton base prepared in step S2 to ensure that the penetration thickness of the slurry is greater than 5 mm, and a slurry-coated cotton base is prepared;

[0010] S4, the slurry-coated cotton base prepared in step S3 is lightly burned and shaped, and then needled to prepare a fiber blanket base piece;

[0011] S5, the fiber blanket base piece prepared in step S4 is high-temperature sintered to prepare a high-temperature-resistant and wear-resistant blanket.

[0012] Optionally, in step S1, the mass ratio of the high-purity aluminum silicate fiber and the silicon carbide mullite fiber is 3-4:1.

[0013] Optionally, in step S1, the silicon carbide mullite fiber is prepared by the following steps:

[0014] Sa, aluminum isopropoxide and tetraethyl orthosilicate are mixed in a molar ratio of 7:4-5, and a mixed sol is prepared after hydrolysis;

[0015] Sb, polyvinyl alcohol accounting for 10-20% of the total mass of the mixed sol is added to the mixed sol prepared in step Sa, and a colloidal solution is prepared after sufficient mixing;

[0016] Sc, the colloidal solution prepared in step Sb is dip-coated on the surface of the silicon carbide long fiber, heated and shaped at a temperature of 600-650°C, and then high-temperature sintered at a temperature of 1250-1300°C, and the short fiber with a length of 5-15 mm is cut after cooling to prepare the silicon carbide mullite fiber.

[0017] Optionally, in step S1, the high-purity aluminum silicate fiber is a short fiber with a length of 4-18 mm.

[0018] Optionally, in step S2, the temperature of the light burning and shaping is 650-700°C, and the time is greater than 30 min.

[0019] Optionally, in step S3, the proportion of each component of the silicon carbide slurry includes: 72-80 parts of nano silicon carbide, 8-12 parts of nano aluminum oxide, 6-10 parts of nano silicon dioxide, 2-4 parts of nano yttrium oxide, and 15-20 parts of ethylene glycol.

[0020] Optionally, in step S4, the temperature of the light burning and shaping is 650-700°C, and the time is greater than 30 min.

[0021] Optionally, in step S5, the temperature of the high-temperature sintering is 1300-1340°C, and the time is greater than 8 h.

[0022] Optionally, the temperature rising rate of the high-temperature sintering is 12-18 DEG C / min.

[0023] In another aspect, the application provides a high-temperature resistant and wear-resistant blanket prepared by the above method.

[0024] In summary, the application has at least one of the following beneficial technical effects:

[0025] 1. The application uses high-purity aluminum silicate fiber as the main material, and mixes part of silicon carbide mullite fiber to make a refractory fiber blanket. After mixing the two fibers, the high-temperature resistance performance is improved, the weight of the refractory fiber blanket is effectively reduced, and the overall strength is also improved.

[0026] 2. The application mixes part of silicon carbide mullite fiber to make a refractory fiber blanket, and the wear resistance of the refractory fiber blanket is significantly improved. The wear resistance at room temperature and high temperature is significantly improved compared with existing various aluminum silicate fiber blankets.

[0027] 3. After mixing part of silicon carbide mullite fiber, the application also coats and penetrates silicon carbide slurry on the surface of the fiber blanket, and after sintering, a hard refractory layer can be formed on the surface of the refractory fiber blanket, which can further improve the wear resistance of the refractory fiber blanket at room temperature and high temperature. DETAILED DESCRIPTION

[0028] The application will be further described in detail below in combination with embodiments.

[0029] The application provides a method for preparing a high-temperature resistant and wear-resistant blanket, comprising the following steps:

[0030] S1, high-purity aluminum silicate fiber and silicon carbide mullite fiber are made into a cotton blank through a cotton collecting process;

[0031] S2, the cotton blank prepared in step S1 is lightly burned and shaped, and then cut to prepare a shaped cotton blank;

[0032] S3, configure silicon carbide slurry, coat silicon carbide slurry on the surface of the shaped cotton blank prepared in step S2, and ensure that the penetration thickness of the slurry is more than 5mm to prepare a slurry coated cotton blank;

[0033] S4, the slurry coated cotton blank prepared in step S3 is lightly burned and shaped, and then needled to prepare a fiber blanket blank;

[0034] S5, the fiber blanket blank prepared in step S4 is high-temperature sintered to prepare a high-temperature resistant and wear-resistant blanket.

[0035] In order to solve the problems in the prior art, the present application improves the existing aluminum silicate fiber blanket, mixes part of the silicon carbide mullite fiber, and has a silicon carbide hardening layer on the surface. After mixing the two fibers, the high temperature resistance and heat insulation performance of the obtained fiber blanket are improved to a certain extent. After the surface hardening layer is attached, the refractory fiber blanket has high surface hardness, and the wear resistance can be obviously improved. The present application mixes part of the silicon carbide mullite fiber, and the hardening layer is sintered from silicon carbide slurry, so that the hardening layer and the fiber have good bonding strength, and the hardening layer is not easy to fall off under high temperature impact.

[0036] The following are preparation examples and embodiments of the present application.

[0037] The main raw materials used in the embodiments of the present application are all commercially available.

[0038] Among them, high-purity aluminum silicate fiber is purchased from Zhengzhou Shengshi Jinding Thermal Insulation Refractory Material Co., Ltd.; silicon carbide long fiber is purchased from Shanghai Xiangtian Nanometer Material Co., Ltd.; nanometer silicon carbide is purchased from Beijing Dekedaojin Technology Co., Ltd.; nanometer aluminum oxide is purchased from Beijing Dekedaojin Technology Co., Ltd.; nanometer silicon dioxide is purchased from Beijing Dekedaojin Technology Co., Ltd.; nanometer yttrium oxide is purchased from Beijing Dekedaojin Technology Co., Ltd.; aluminum isopropoxide, purity more than 99%, is purchased from Yangzhou Zhongtianli New Material Co., Ltd.; tetraethyl orthosilicate, purity more than 99%, is purchased from Nanjing Chemical Reagent Co., Ltd.; polyvinyl alcohol is purchased from Hubei Rishengchang New Material Technology Co., Ltd.; ethylene glycol is purchased from Jinan Xinyin Chemical Co., Ltd.

[0039] Preparation Example 1

[0040] The silicon carbide mullite fiber of the present preparation example is prepared by the following steps:

[0041] Sa, mix aluminum isopropoxide and tetraethyl orthosilicate according to a molar ratio of 7:4, and prepare a mixed sol after hydrolysis;

[0042] Sb, add 10% of polyvinyl alcohol based on the total mass of the mixed sol to the mixed sol prepared in step Sa, and after mixing, prepare a colloidal solution;

[0043] Sc, dip-coat the colloidal solution prepared in step Sb on the surface of the silicon carbide long fiber, place it in a sintering furnace, heat it to above 600℃ at a heating rate of 15℃ / min, then control the temperature at 600-650℃ for 30min, heat and shape; after heat and shaping, heat it to above 1250℃ at a heating rate of 15℃ / min, then control the temperature at 1250-1300℃ for 8h, cool it and cut it into short fibers with a length of 5-15mm to prepare silicon carbide mullite fiber.

[0044] Preparation Example 2

[0045] The silicon carbide mullite fiber of the present preparation example is prepared by the following steps:

[0046] Sa, aluminum isopropoxide and tetraethyl orthosilicate are mixed in a molar ratio of 7:4.4, and a mixed sol is prepared after hydrolysis;

[0047] Sb, polyvinyl alcohol accounting for 12% of the total mass of the mixed sol is added to the mixed sol prepared in step Sa, and a colloidal solution is prepared after thorough mixing;

[0048] Sc, the colloidal solution prepared in step Sb is dip-coated on the surface of the silicon carbide long fiber, and is placed in a sintering furnace, heated to above 600°C at a heating rate of 15°C / min, and then the temperature is controlled at 600-650°C for 30 min for heat setting; after heat setting, the temperature is raised to above 1250°C at a heating rate of 15°C / min, and then the temperature is controlled at 1250-1300°C for 8 h, and after cooling, the short fibers with a length of 5-15 mm are cut to prepare the silicon carbide mullite fiber.

[0049] Preparation Example 3

[0050] The silicon carbide mullite fiber of the present preparation example is prepared by the following steps:

[0051] Sa, aluminum isopropoxide and tetraethyl orthosilicate are mixed in a molar ratio of 7:5, and a mixed sol is prepared after hydrolysis;

[0052] Sb, polyvinyl alcohol accounting for 20% of the total mass of the mixed sol is added to the mixed sol prepared in step Sa, and a colloidal solution is prepared after thorough mixing;

[0053] Sc, the colloidal solution prepared in step Sb is dip-coated on the surface of the silicon carbide long fiber, and is placed in a sintering furnace, heated to above 600°C at a heating rate of 15°C / min, and then the temperature is controlled at 600-650°C for 30 min for heat setting; after heat setting, the temperature is raised to above 1250°C at a heating rate of 15°C / min, and then the temperature is controlled at 1250-1300°C for 8 h, and after cooling, the short fibers with a length of 5-15 mm are cut to prepare the silicon carbide mullite fiber.

[0054] Example 1

[0055] The preparation method of the high-temperature-resistant and wear-resistant blanket of the present example comprises the following steps:

[0056] S1, high-purity aluminum silicate fiber (length 4-18 mm) and the silicon carbide mullite fiber of Preparation Example 1 are thoroughly mixed in a mass ratio of 5:1, and a cotton blank is prepared by a cotton collecting process;

[0057] S2, the cotton blank prepared in step S1 is placed in a sintering furnace, and heated to above 650 DEG C at a heating rate of 15 DEG C / min, and then the temperature is controlled at 650-700 DEG C for 30 min, light burning and shaping, and then cut into the required size after cooling to prepare a shaped cotton blank;

[0058] S3, nano silicon carbide and ethylene glycol are mixed in a mass ratio of 92:8 to prepare a silicon carbide slurry, and the silicon carbide slurry is coated on the surface of the shaped cotton blank prepared in step S2 to ensure that the penetration thickness of the slurry is 5 mm to prepare a slurry coated cotton blank;

[0059] S4, the slurry coated cotton blank prepared in step S3 is placed in a sintering furnace, and heated to above 650 DEG C at a heating rate of 15 DEG C / min, and then the temperature is controlled at 650-700 DEG C for 30 min, light burning and shaping, and then needling to prepare a fiber blanket blank;

[0060] S5, the fiber blanket blank prepared in step S4 is heated to above 1300 DEG C at a heating rate of 15 DEG C / min, and then the temperature is controlled at 1300-1340 DEG C for 8 h to prepare a high temperature resistant and wear resistant blanket.

[0061] Example 2

[0062] The difference between this embodiment and example 1 is that in step S1, the silicon carbide mullite fiber prepared in preparation example 2 is used.

[0063] Example 3

[0064] The difference between this embodiment and example 1 is that in step S1, the silicon carbide mullite fiber prepared in preparation example 3 is used.

[0065] Example 4

[0066] The difference between this embodiment and example 2 is that in step S1, the mass ratio of high purity aluminum silicate fiber and silicon carbide mullite fiber is 4:1.

[0067] Example 5

[0068] The difference between this embodiment and example 2 is that the mass ratio of high purity aluminum silicate fiber and silicon carbide mullite fiber is 3:1.

[0069] Example 6

[0070] The difference between this embodiment and example 5 is that in step S3, the component ratio of the silicon carbide slurry includes: 72 parts of nano silicon carbide, 12 parts of nano aluminum oxide, 10 parts of nano silicon dioxide, 2 parts of nano yttrium oxide, and 15 parts of ethylene glycol.

[0071] Example 7

[0072] The difference between the embodiment and the embodiment 5 is that in the step S3, the proportion of each component of the silicon carbide slurry comprises: 80 parts of nano silicon carbide, 8 parts of nano alumina, 6 parts of nano silicon dioxide, 4 parts of nano yttrium oxide, and 20 parts of ethylene glycol.

[0073] Embodiment 8

[0074] The difference between the embodiment and the embodiment 5 is that in the step S3, the proportion of each component of the silicon carbide slurry comprises: 80 parts of nano silicon carbide, 8 parts of nano alumina, 6 parts of nano silicon dioxide, 4 parts of nano yttrium oxide, and 20 parts of ethylene glycol.

[0075] Embodiment 9

[0076] The difference between the embodiment and the embodiment 8 is that in the step S5, the temperature is raised to above 1300℃ at a temperature raising rate of 12℃ / min.

[0077] Embodiment 10

[0078] The difference between the embodiment and the embodiment 8 is that in the step S5, the temperature is raised to above 1300℃ at a temperature raising rate of 18℃ / min.

[0079] Comparative Example 1

[0080] The refractory fiber blanket of the comparative example is prepared by the following steps:

[0081] S1, high-purity aluminum silicate fibers (length 4-18 mm) and polycrystalline mullite refractory fibers (length 4-18 mm) are mixed in a mass ratio of 3:1, and a cotton blank is prepared by a cotton collecting process;

[0082] S2, the cotton blank prepared in step S1 is placed in a sintering furnace and heated to above 650℃ at a temperature raising rate of 15℃ / min, and then the temperature is controlled at 650-700℃ for 30min, and light burning is performed to obtain a shaped cotton blank;

[0083] S3, the cotton blank prepared in step S2 is needle punched to form a blanket, and is placed in a sintering furnace and heated to above 1200℃ at a temperature raising rate of 15℃ / min, and then the temperature is controlled at 1200-1250℃ for 8h to obtain a refractory fiber blanket.

[0084] The polycrystalline mullite refractory fiber used in the comparative example is purchased from Deqing Hongye Crystal Fiber Co., Ltd.

[0085] Comparative Example 2

[0086] The difference between the comparative example and the embodiment 8 is that in the step S3, no nano yttrium oxide is added.

[0087] Comparative Example 3

[0088] The difference between the present comparative example and Example 8 is that, in step S1, the same weight and length specification of silicon carbide fiber is used instead of silicon carbide mullite fiber.

[0089] Comparative Example 4

[0090] The difference between the present comparative example and Example 8 is that, in steps S3 and S4, the coating of silicon carbide slurry and the light calcination shaping step are removed.

[0091] Comparative Example 5

[0092] The difference between the present comparative example and Example 8 is that, in step S1, the same weight and length specification of high-purity aluminum silicate fiber is used instead of silicon carbide mullite fiber.

[0093] Performance detection

[0094] The refractory blankets prepared in Examples 1-10 and Comparative Examples 1-5 of the present application were subjected to performance detection to detect their high-temperature resistance, tensile strength, and room-temperature and high-temperature wear resistance.

[0095] Detection method:

[0096] The high-temperature resistance and tensile strength were detected using the method described in GB / T 17911-2018 “Test methods for refractory fiber products”. During detection, the refractory blanket was cut to the required size for testing samples according to the method described in the standard, and then detection was performed. Among them, the high-temperature resistance was detected by detecting the thermal conductivity.

[0097] The room-temperature wear resistance was detected using the method described in GB / T 18301-2012. A wear testing machine was used, 1000 μm sand particles were selected, and after 500 repeated test procedures, the mass loss rate of the test sample before and after the test was calculated.

[0098] The high-temperature wear resistance was tested using an ABR-1450A high-temperature wear tester with a test temperature of 1000°C. The same method as the above room-temperature wear resistance detection method was used to test the high-temperature wear resistance, and the mass loss rate of the test sample before and after the test was calculated.

[0099] The detection results are shown in Table 1 below.

[0100] Table 1 Detection results of Examples 1-10 and Comparative Examples 1-5

[0101] Thermal conductivity (W / (m°K)) Tensile strength (kPa) Normal temperature loss rate (%) High temperature loss rate (%) Example 1 0.092 67 3.6 7.9 Example 2 0.091 67 3.5 7.6 Example 3 0.092 67 3.6 7.8 Example 4 0.089 69 3.2 7.1 Example 5 0.084 72 3.0 6.8 Example 6 0.082 77 1.2 2.3 Example 7 0.082 78 1.4 2.8 Example 8 0.081 78 0.9 1.6 Example 9 0.081 78 0.9 1.5 Example 10 0.081 78 1.0 1.8 Comparative Example 1 0.109 69 11.4 25.6 Comparative Example 2 0.082 74 1.0 1.9 Comparative Example 3 0.085 68 6.4 11.2 Comparative Example 4 0.083 71 8.6 15.1 Comparative Example 5 0.102 70 2.9 6.1

[0102] As can be seen from the data in Table 1, the high-temperature-resistant and wear-resistant blanket prepared by the preparation method of Examples 1-10 has certain improvement in high-temperature-resistant and heat-insulating performance compared with the fire-resistant blanket prepared by the preparation method of Comparative Examples 1-5, has relatively excellent performance, and the tensile strength can reach more than 65 kPa, and has relatively excellent strength. In addition, the high-temperature-resistant and wear-resistant blanket prepared by the preparation method of Examples 1-10 has extremely obvious improvement in normal-temperature and high-temperature wear-resistant performance compared with the fire-resistant blanket prepared by the preparation method of Comparative Examples 1-5. It can be seen that the high-temperature-resistant and wear-resistant blanket of the application has extremely excellent high-temperature-resistant and wear-resistant performance.

[0103] As can be seen from the comparison of the data of Example 8 and Comparative Examples 1-5 in Table 1, the selection of the specific silicon carbide mullite fiber, the specific ratio of the high-purity aluminum silicate fiber and the silicon carbide mullite fiber, and the coating of the specific ratio of the silicon carbide slurry are the cores of ensuring the performance of the application. The specific silicon carbide mullite fiber can effectively ensure that the high-temperature-resistant and wear-resistant blanket of the application has excellent high-temperature-resistant and wear-resistant performance; the specific ratio of the high-purity aluminum silicate fiber and the silicon carbide mullite fiber can ensure that the sintered silicon carbide hardening layer has relatively excellent bonding firmness with the fiber blanket, can effectively improve the wear-resistant performance, and effectively reduce the falling of the hardening layer during wear; and the specific ratio of the silicon carbide slurry can further greatly improve the bonding firmness between the hardening layer and the fiber blanket, and further improve the wear-resistant performance.

[0104] As can be seen from the comparison of Example 8 and Comparative Example 2, the addition of a small amount of yttrium oxide can effectively improve the wear-resistant performance. As can be seen from the comparison of Example 8 and Comparative Example 3, the specific silicon carbide mullite fiber of the application has more excellent wear-resistant performance than the pure silicon carbide fiber after the attachment of the hardening layer. The applicant speculates that the use of pure silicon carbide fiber can easily lead to the formation of silicon carbide whiskers in the coating layer during the sintering of the hardening layer, and the whiskers are easy to break during impact wear, resulting in an increase in wear loss.

[0105] As can be seen from the comparison of the data of Examples 1-10 in Table 1, the specific silicon carbide mullite fiber and the specific ratio of the silicon carbide slurry used in the application have the most excellent wear-resistant performance. The specific ratio of the silicon carbide slurry can not only ensure that the hardening layer formed thereby has excellent bonding with the silicon carbide mullite fiber, but also can effectively improve the bonding firmness between the hardening layer and the high-purity aluminum silicate fiber, thereby effectively avoiding the falling of the hardening layer.

[0106] The above are preferred embodiments of the application, which do not limit the protection scope of the application, so: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A method for preparing a high-temperature resistant and wear-resistant blanket, characterized in that, It comprises the following steps: S1, high-purity aluminum silicate fiber and silicon carbide mullite fiber are made into a cotton blank through a cotton collecting process; wherein the mass ratio of high-purity aluminum silicate fiber and silicon carbide mullite fiber is 3-4:1; S2, the cotton blank prepared in step S1 is lightly burned and shaped, and then cut to prepare a shaped cotton blank; S3, silicon carbide slurry is configured, and the silicon carbide slurry is coated on the surface of the shaped cotton blank prepared in step S2 to ensure that the penetration thickness of the slurry is more than 5mm, and a slurry-coated cotton blank is prepared; S4, the slurry-coated cotton blank prepared in step S3 is lightly burned and shaped, and then needled into a blanket to prepare a fiber blanket blank; S5, the fiber blanket blank prepared in step S4 is high-temperature sintered to prepare a high-temperature wear-resistant blanket; In the step S1, the silicon carbide mullite fiber is prepared by the following steps: Sa, aluminum isopropoxide and tetraethyl orthosilicate are mixed in a molar ratio of 7:4-5, and a mixed sol is prepared after hydrolysis; Sb, 10-20% of polyvinyl alcohol based on the total mass of the mixed sol is added to the mixed sol prepared in step Sa, and the mixed sol is mixed to prepare a colloidal solution; Sc, the colloidal solution prepared in step Sb is coated on the surface of the silicon carbide long fiber, and is heated and shaped at a temperature of 600-650℃, and then high-temperature sintered at a temperature of 1250-1300℃, and cut into short fibers with a length of 5-15mm after cooling to prepare silicon carbide mullite fiber.

2. The method of claim 1, wherein the high temperature resistant anti-abrasion blanket is prepared by the steps of: In the step S1, the high-purity aluminum silicate fiber is a short fiber with a length of 4-18mm.

3. The method of claim 2, wherein the high temperature resistant, wear resistant blanket is prepared by the steps of: In the step S2, the temperature of the light burning and shaping is 650-700℃, and the time is more than 30min.

4. The method of claim 2, wherein the high temperature resistant anti-abrasion blanket is prepared by the steps of: In the step S3, the proportion of each component of the silicon carbide slurry includes: 72-80 parts of nano silicon carbide, 8-12 parts of nano aluminum oxide, 6-10 parts of nano silicon dioxide, 2-4 parts of nano yttrium oxide, and 15-20 parts of ethylene glycol.

5. The method of claim 1, wherein the high temperature resistant, wear- resistant blanket is prepared by the steps of: In the step S4, the temperature of the light burning and shaping is 650-700℃, and the time is more than 30min.

6. The method of claim 1, wherein the high temperature resistant, wear- resistant blanket is prepared by the steps of: In the step S5, the temperature of the high-temperature sintering is 1300-1340℃, and the time is more than 8h.

7. The method of claim 6, wherein the high temperature resistant, wear resistant blanket is prepared by the steps of: The high-temperature wear-resistant blanket is prepared by the preparation method of any one of claims 1-7.

8. A high temperature resistant, wear resistant blanket characterized by, The high-temperature wear-resistant blanket is prepared by the preparation method of any one of claims 1-7.