High-wear-resistance hot-bending forming rock plate and preparation method thereof

By combining raw materials such as kaolin with modified additives, the problem of difficult coordination between wear resistance and toughness of rock slabs is solved, the toughness and wear resistance of hot-bent rock slabs are improved, and the efficiency and stability of the product are enhanced.

CN119797888BActive Publication Date: 2025-10-17GUANGDONG OVERLAND CERAMICS CO LTD

Patent Information

Application Number
CN202411847384.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2025-10-17
Estimated Expiration
2044-12-16

AI Technical Summary

Technical Problem

The existing rock slabs are difficult to coordinate in terms of wear resistance and toughness, resulting in low product efficiency and easy cracking and brittleness during the hot bending process.

Method used

Kaolin, selected ball clay and other raw materials are combined with modification additives. The toughness and wear resistance of the rock slab are improved through the coordination of mullite, cordierite, silicon carbide whisker liquid and hydroxyapatite agent in the modification liquid.

Benefits of technology

The toughness and wear resistance of the rock slab are improved, the coordinated improvement of the product is achieved, and the stability and efficiency of hot bending are enhanced.

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Abstract

The application discloses a kind of high wear-resistant hot bending forming rock plate, including following weight parts raw materials: kaolin 30-35 parts, fine ball clay 20-25 parts, wollastonite 10-15 parts, super white sand 10-15 parts, feldspar 8-14 parts, pyroxene 7-12 parts, talc 6-10 parts, bentonite 5-8 parts, tremolite 4-7 parts, sodium tripolyphosphate 3-5 parts, modified additive 4-7 parts.The high wear-resistant hot bending forming rock plate of the application uses kaolin, fine ball and other raw materials with modified additive, through the modification of mullite and cordierite in modified additive by specific modified liquid stirring, the silicon carbide whisker liquid in modified liquid cooperates with hydroxyapatite agent into the system, through the coordination and synergistic effect between raw materials, so that the performance of the product is further improved, the toughness performance, fracture performance and wear resistance of the product are improved in coordination.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rock plate, and in particular to a high-wear-resistance hot-bending forming rock plate and a preparation method thereof. BACKGROUND

[0002] Generally, the hand washing basin, dish washing basin and the like are formed by using acrylic material, but acrylic is resin, cannot be made into an integral body, and is not resistant to high temperature, acid and alkali, and cannot be made into a customized pattern. If the rock plate is used as the base material, it is easy to crack and become brittle during secondary hot bending, and cannot be formed.

[0003] The existing rock plate has poor wear resistance, and the toughness performance, fracture performance and wear resistance are difficult to coordinate, thereby limiting the use efficiency of the product. Based on this, the present application further improves the rock plate. SUMMARY

[0004] In view of the defects of the prior art, the present application aims to provide a high-wear-resistance hot-bending forming rock plate and a preparation method thereof, so as to solve the problems in the background art.

[0005] The present application solves the technical problems by adopting the following technical solutions:

[0006] The present application provides a high-wear-resistance hot-bending forming rock plate, which comprises the following raw materials by weight:

[0007] Kaolin 30-35 parts, selected ball clay 20-25 parts, wollastonite 10-15 parts, super white sand 10-15 parts, feldspar 8-14 parts, pyroxene 7-12 parts, talc 6-10 parts, bentonite 5-8 parts, tremolite 4-7 parts, sodium tripolyphosphate 3-5 parts, and modified additive 4-7 parts.

[0008] Preferably, the kaolin contains >35% aluminum, has a whiteness of >75 degrees and a strength of >3 mpa; the selected ball clay contains >35% aluminum, has a whiteness of >75 degrees and a strength of >3 mpa;

[0009] The wollastonite contains >35% calcium oxide, has a loss on ignition of <5% and a whiteness of >55 degrees;

[0010] The super white sand contains >75% silicon dioxide and has a whiteness of >75 degrees;

[0011] The feldspar contains a total amount of potassium and sodium of >8% and has a whiteness of >60 degrees;

[0012] The pyroxene contains a total amount of calcium and magnesium of >45%, has a loss on ignition of <5% and a whiteness of >60 degrees;

[0013] The talc contains >33% magnesium oxide and has a whiteness of >75 degrees; the bentonite has a strength of >7 mpa, a whiteness of >55 degrees and >17% aluminum oxide; and the tremolite contains a total amount of calcium and magnesium of >45%, has a loss on ignition of <5% and a whiteness of >60 degrees.

[0014] Preferably, the modified additive is mullite, and the modified additive is prepared by mixing mullite and cordierite in a weight ratio of 2:1, adding the mixture into a modified liquid in an amount of 3-5 times the total amount of mullite, and stirring to modify.

[0015] Preferably, the stirring modification is performed at a stirring speed of 450-550 r / min for 1-2 h at a stirring temperature of 50-60 DEG C.

[0016] Preferably, the modified liquid is prepared by:

[0017] The silicon carbide whiskers are immersed in a sodium dodecyl benzene sulfonate solution in an amount of 3-5 times the total amount of the silicon carbide whiskers, and then 10-15% of the total amount of the silicon carbide whiskers is added with a silane coupling agent KH550, and 4-7% of the total amount of the silicon carbide whiskers is added with a chitosan solution, and the mixture is stirred to obtain a silicon carbide whisker liquid;

[0018] The silicon carbide whisker liquid and the hydroxyapatite agent are blended and ball milled to obtain a modified liquid.

[0019] Preferably, the sodium dodecyl benzene sulfonate solution has a mass fraction of 2-5%, and the chitosan solution has a mass fraction of 4-6%.

[0020] Preferably, the ball milling is performed at a speed of 1500 r / min for 2 h.

[0021] Preferably, the hydroxyapatite agent is prepared by:

[0022] The hydroxyapatite is immersed in a sufficient amount of a sodium silicate solution and stirred to obtain a hydroxyapatite liquid, 5-8 parts of the hydroxyapatite liquid, 2-4 parts of a phosphate buffer solution, and 3-5 parts of boron nitride are blended and stirred to obtain a hydroxyapatite agent, and then the hydroxyapatite agent is filtered and dried.

[0023] Preferably, the phosphate buffer solution has a pH value of 5.5, and the sodium silicate solution has a mass fraction of 2-5%.

[0024] The application further provides a preparation method of the high-wear-resistance hot-bending formed rock plate.

[0025] The raw material is wet ball milled, formed in a mold, and then fired at a temperature of 1300 DEG C for 2 h to obtain a rock plate, and then the rock plate is placed on a high-temperature refractory plate and heated from top and bottom in a hot-bending furnace at a temperature of 1300 DEG C, and then the high-wear-resistance hot-bending formed rock plate is obtained by cooling, hole digging, edge cutting, and edge grinding.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] The high-wear-resistance hot-bending forming rock plate adopts kaolin, selected ball and modified additives, and is formed by stirring and modifying mullite and cordierite in the modified liquid. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] The high-wear-resistance hot-bending forming rock plate comprises the following raw materials in parts by weight:

[0030] Kaolin 30-35 parts, selected ball clay 20-25 parts, wollastonite 10-15 parts, super white sand 10-15 parts, feldspar 8-14 parts, pyroxene 7-12 parts, talc 6-10 parts, bentonite 5-8 parts, tremolite 4-7 parts, sodium tripolyphosphate 3-5 parts, and modified additives 4-7 parts.

[0031] Preferably, the kaolin contains >35% aluminum, has a whiteness of >75 degrees and a strength of >3 mpa; the selected ball clay contains >35% aluminum, has a whiteness of >75 degrees and a strength of >3 mpa;

[0032] The wollastonite contains >35% calcium oxide, has a loss on ignition of <5% and a whiteness of >55 degrees;

[0033] The super white sand contains >75% silicon dioxide and has a whiteness of >75 degrees;

[0034] The feldspar contains >8% potassium and sodium in total and has a whiteness of >60 degrees;

[0035] The pyroxene contains >45% calcium and magnesium in total, has a loss on ignition of <5% and a whiteness of >60 degrees;

[0036] The talc contains >33% magnesium oxide and has a whiteness of >75 degrees; the bentonite has a strength of >7 mpa, a whiteness of >55 degrees and >17% aluminum oxide; the tremolite contains >45% calcium and magnesium in total, has a loss on ignition of <5% and a whiteness of >60 degrees.

[0037] The modified additives in the embodiment are mullite and cordierite mixed at a weight ratio of 2:1 and added into a modified liquid with 3-5 times the total amount of mullite for stirring and modification, and after the stirring is completed, the mixture is filtered and dried.

[0038] The stirring modification of this embodiment is 450-550 r / min, stirring for 1-2 h, and the stirring temperature is 50-60℃.

[0039] The preparation method of the modification liquid of this embodiment is as follows:

[0040] The silicon carbide whiskers are immersed in a sodium dodecyl benzene sulfonate solution with a total amount of 3-5 times that of the silicon carbide whiskers, and then 10-15% of the total amount of the silicon carbide whiskers of silane coupling agent KH550 and 4-7% of the total amount of the silicon carbide whiskers of chitosan solution are added, and the mixture is stirred uniformly to obtain a silicon carbide whisker liquid;

[0041] The 5-8 parts of the silicon carbide whisker liquid and 2-4 parts of the hydroxyapatite agent are blended and ball milled, and after the ball milling is completed, a modified liquid is obtained.

[0042] The mass fraction of the sodium dodecyl benzene sulfonate solution of this embodiment is 2-5%; and the mass fraction of the chitosan solution is 4-6%.

[0043] The ball milling speed of the blending ball milling treatment of this embodiment is 1500 r / min, and the ball milling time is 2 h.

[0044] The preparation method of the hydroxyapatite agent of this embodiment is as follows:

[0045] The hydroxyapatite is immersed in a sufficient amount of sodium silicate solution and stirred sufficiently to obtain a hydroxyapatite liquid. 5-8 parts of the hydroxyapatite liquid, 2-4 parts of a phosphate buffer solution, and 3-5 parts of boron nitride are blended and stirred sufficiently, and then suction filtration and drying are performed to obtain a hydroxyapatite agent.

[0046] The pH value of the phosphate buffer solution of this embodiment is 5.5; and the mass fraction of the sodium silicate solution is 2-5%.

[0047] The preparation method of a high-wear-resistance hot-bending formed rock plate of this embodiment comprises the following steps:

[0048] The raw materials are wet ball milled, then formed in a mold, and then fired at a firing temperature of 1300℃ for 2 h to obtain a rock plate. The prepared rock plate is placed on a high-temperature refractory plate and subjected to up-down heating in a hot-bending furnace at a heating temperature of 1300℃, and then cooled, drilled, edged, and ground to obtain a high-wear-resistance hot-bending formed rock plate.

[0049] Embodiment 1.

[0050] The high-wear-resistance hot-bending formed rock plate of this embodiment comprises the following raw materials by weight:

[0051] Kaolin 30 parts, selected ball clay 20 parts, wollastonite 10 parts, super white sand 10 parts, feldspar 8 parts, pyroxene 7 parts, talc 6 parts, bentonite 5 parts, tremolite 4 parts, sodium tripolyphosphate 3 parts, and modified additive 4 parts.

[0052] Kaolin: Al2O3 > 35%, whiteness > 75 degrees, strength > 3 mpa; selected ball clay: Al2O3 > 35%, whiteness > 75 degrees, strength > 3 mpa;

[0053] Wollastonite: CaO > 35%, loss on ignition < 5%, whiteness > 55 degrees;

[0054] Super white sand: SiO2 > 75%, whiteness > 75 degrees;

[0055] Feldspar: total amount of K+Na > 8%, whiteness > 60 degrees;

[0056] Pyroxene: total amount of Ca+Mg > 45%, loss on ignition < 5%, whiteness > 60 degrees;

[0057] Talc: MgO > 33%, whiteness > 75 degrees; bentonite: strength > 7 mpa, whiteness > 55 degrees, Al2O3 > 17%; tremolite: total amount of Ca+Mg > 45%, loss on ignition < 5%, whiteness > 60 degrees.

[0058] The modified additive of the embodiment is mullite and cordierite, which are mixed in a weight ratio of 2:1 and added to a modified liquid with a total amount of mullite being 3 times, and then stirred to be modified. After stirring, filtration and drying are performed.

[0059] The stirring modification of the embodiment is performed at a stirring speed of 450 r / min for 1 h and a stirring temperature of 50℃.

[0060] The preparation method of the modified liquid of the embodiment is as follows:

[0061] The silicon carbide whiskers are immersed in a sodium dodecyl benzene sulfonate solution with a total amount of silicon carbide whiskers being 3 times, and then a silane coupling agent KH550 with a total amount of silicon carbide whiskers being 10% and a chitosan solution with a total amount of silicon carbide whiskers being 4% are added, and then stirred uniformly to obtain a silicon carbide whisker liquid;

[0062] The 5 parts of the silicon carbide whisker liquid and 2 parts of the hydroxyapatite agent are blended and ball milled, and then a modified liquid is obtained after ball milling.

[0063] The mass fraction of the sodium dodecyl benzene sulfonate solution of the embodiment is 2%, and the mass fraction of the chitosan solution is 4%.

[0064] The ball milling speed of the blending ball milling treatment of the embodiment is 1500 r / min, and the ball milling time is 2 h.

[0065] The preparation method of the hydroxyapatite agent of the embodiment is as follows:

[0066] The hydroxyapatite is immersed in a sufficient amount of sodium silicate solution and stirred sufficiently to obtain a hydroxyapatite liquid. 5 parts of the hydroxyapatite liquid, 2 parts of a phosphate buffer solution and 3 parts of boron nitride are blended and stirred sufficiently, and then filtration and drying are performed to obtain a hydroxyapatite agent.

[0067] The pH value of the phosphate buffer solution of the embodiment is 5.5; and the mass fraction of the sodium silicate solution is 2%.

[0068] The preparation method of the high-wear-resistance hot-bending formed rock plate of the embodiment comprises the following steps:

[0069] The raw materials are wet ball milled, then formed in a mold, and then fired at a firing temperature of 1300 DEG C for 2 hours to obtain a rock plate. The prepared rock plate is placed on a high-temperature refractory plate and heated up and down in a hot-bending furnace at a heating temperature of 1300 DEG C, and then cooled, holed, edged, and edged to obtain the high-wear-resistance hot-bending formed rock plate.

[0070] Example 2.

[0071] The high-wear-resistance hot-bending formed rock plate of the embodiment comprises the following raw materials in parts by weight:

[0072] Kaolin 35 parts, selected ball clay 5 parts, wollastonite 15 parts, ultra-white sand 15 parts, feldspar 14 parts, pyroxene 12 parts, talc 10 parts, bentonite 8 parts, tremolite 7 parts, sodium tripolyphosphate 5 parts, and modified additive 7 parts.

[0073] The kaolin contains > 35% aluminum, has a whiteness of > 75 degrees, and a strength of > 3 mpa; the selected ball clay contains > 35% aluminum, has a whiteness of > 75 degrees, and a strength of > 3 mpa;

[0074] The wollastonite contains > 35% calcium oxide, has a loss on ignition of < 5%, and a whiteness of > 55 degrees;

[0075] The ultra-white sand contains > 75% silicon dioxide and has a whiteness of > 75 degrees;

[0076] The feldspar contains > 8% total potassium and sodium and has a whiteness of > 60 degrees;

[0077] The pyroxene contains > 45% total calcium and magnesium, has a loss on ignition of < 5%, and a whiteness of > 60 degrees;

[0078] The talc contains > 33% magnesium oxide and has a whiteness of > 75 degrees; the bentonite has a strength of > 7 mpa, a whiteness of > 55 degrees, and > 17% aluminum oxide; and the tremolite contains > 45% total calcium and magnesium, has a loss on ignition of < 5%, and a whiteness of > 60 degrees.

[0079] The modified additive of the embodiment is mullite and cordierite mixed in a weight ratio of 2:1, added into a modified liquid with 5 times the total amount of mullite, and stirred to be modified. After stirring, the mixture is filtered and dried.

[0080] The stirring modification of the embodiment is performed at 550 r / min for 2 hours at a stirring temperature of 60 DEG C.

[0081] The preparation method of the modified liquid of the embodiment is:

[0082] The silicon carbide whiskers are immersed in a sodium dodecyl benzene sulfonate solution with a total amount of 5 times the silicon carbide whiskers, and then 15% of the total amount of the silicon carbide whiskers of silane coupling agent KH550 and 7% of the total amount of the silicon carbide whiskers of chitosan solution are added, and stirred uniformly to obtain a silicon carbide whisker solution;

[0083] The 8 parts of the silicon carbide whisker solution and 4 parts of the hydroxyapatite agent are blended and ball milled, and after the ball milling is completed, a modified solution is obtained.

[0084] The mass fraction of the sodium dodecyl benzene sulfonate solution in this embodiment is 5%; and the mass fraction of the chitosan solution is 6%.

[0085] The ball milling speed of the blending and ball milling treatment in this embodiment is 1500 r / min, and the ball milling time is 2 h.

[0086] The preparation method of the hydroxyapatite agent in this embodiment is as follows:

[0087] The hydroxyapatite is immersed in a sufficient amount of sodium silicate solution and stirred sufficiently to obtain a hydroxyapatite solution. 8 parts of the hydroxyapatite solution, 4 parts of a phosphate buffer solution and 5 parts of boron nitride are blended and stirred sufficiently, and then suction filtered and dried to obtain a hydroxyapatite agent.

[0088] The pH value of the phosphate buffer solution in this embodiment is 5.5; and the mass fraction of the sodium silicate solution is 5%.

[0089] The preparation method of a high-wear-resistance hot-bending formed rock plate in this embodiment includes the following steps:

[0090] The raw materials are wet ball milled, then formed in a mold, and then fired at a firing temperature of 1300°C for 2 h to obtain a rock plate. The prepared rock plate is placed on a high-temperature refractory plate, heated up and down in a hot-bending furnace at a heating temperature of 1300°C, and then cooled, drilled, edged and ground to obtain a high-wear-resistance hot-bending formed rock plate.

[0091] Embodiment 3.

[0092] The high-wear-resistance hot-bending formed rock plate in this embodiment includes the following raw materials by weight:

[0093] Kaolin 32.5 parts, selected ball clay 22.5 parts, wollastonite 12.5 parts, super white sand 12.5 parts, feldspar 11 parts, pyroxene 8 parts, talc 8 parts, bentonite 6.5 parts, tremolite 5.5 parts, sodium tripolyphosphate 3-5 parts, and modified additive 4-7 parts.

[0094] Preferably, the kaolin contains >35% aluminum, has a whiteness >75 degrees, and a strength >3 mpa; the selected ball clay contains >35% aluminum, has a whiteness >75 degrees, and a strength >3 mpa;

[0095] Wollastonite: CaO > 35%, loss on ignition < 5%, whiteness > 55 degrees;

[0096] Super white sand: SiO2> 75%, whiteness > 75 degrees;

[0097] Feldspar: total amount of K + Na > 8%, whiteness > 60 degrees;

[0098] Pyroxene: total amount of Ca + Mg > 45%, loss on ignition < 5%, whiteness > 60 degrees;

[0099] Talc: MgO > 33%, whiteness > 75 degrees; Bentonite: strength > 7 mpa, whiteness > 55 degrees, Al2O3> 17%; Tremolite: total amount of Ca + Mg > 45%, loss on ignition < 5%, whiteness > 60 degrees.

[0100] The modified additive of this embodiment is mullite and cordierite, which are mixed in a weight ratio of 2:1 and added to a modified liquid that is 4 times the total amount of mullite, and then stirred to modify, after stirring, filtered and dried.

[0101] The stirring modification of this embodiment is at 500 r / min for 1.5 h, and the stirring temperature is 55°C.

[0102] The preparation method of the modified liquid of this embodiment is:

[0103] The silicon carbide whiskers are immersed in a sodium dodecyl benzene sulfonate solution that is 4 times the total amount of silicon carbide whiskers, and then 12.5% of the total amount of silicon carbide whiskers of silane coupling agent KH550 and 5.5% of the total amount of silicon carbide whiskers of chitosan solution are added, and stirred uniformly to obtain a silicon carbide whisker liquid;

[0104] The 6.5 parts of silicon carbide whisker liquid and 3 parts of hydroxyapatite agent are blended and ball milled, and after ball milling, a modified liquid is obtained.

[0105] The mass fraction of the sodium dodecyl benzene sulfonate solution of this embodiment is 3.5%; the mass fraction of the chitosan solution is 5%.

[0106] The ball milling speed of the blending ball milling treatment of this embodiment is 1500 r / min, and the ball milling time is 2 h.

[0107] The preparation method of the hydroxyapatite agent of this embodiment is:

[0108] The hydroxyapatite is immersed in a sufficient amount of sodium silicate solution and stirred thoroughly to obtain a hydroxyapatite liquid, 6.5 parts of the hydroxyapatite liquid, 3 parts of a phosphate buffer solution, and 4 parts of boron nitride are blended and stirred thoroughly, then filtered and dried to obtain a hydroxyapatite agent.

[0109] The pH value of the phosphate buffer solution of this embodiment is 5.5; the mass fraction of the sodium silicate solution is 3.5%.

[0110] The preparation method of the high-wear-resistance hot-bending formed rock plate of the embodiment comprises the following steps:

[0111] The raw material is wet ball milled, then formed in a mold, and then fired at a firing temperature of 1300 DEG C for 2 h to obtain a rock plate. The prepared rock plate is placed on a high-temperature refractory plate and heated up and down in a hot-bending furnace at a heating temperature of 1300 DEG C, and then cooled, drilled, trimmed, and edged to obtain the high-wear-resistance hot-bending formed rock plate.

[0112] Comparative Example 1.

[0113] Different from Example 3 is that no modified additive is added.

[0114] Comparative Example 2.

[0115] Different from Example 3 is that no modified liquid is added in the preparation of the modified additive.

[0116] Comparative Example 3.

[0117] Different from Example 3 is that no hydroxyapatite agent is added in the modified liquid.

[0118] Comparative Example 4.

[0119] Different from Example 3 is that the hydroxyapatite agent is replaced by hydroxyapatite.

[0120] Comparative Example 5.

[0121] Different from Example 3 is that no silicon carbide whisker liquid is added in the modified liquid.

[0122] In order to compare and illustrate the performance of different products, the following performances of the products obtained in the examples and comparative examples are tested, and the test results are as follows.

[0123] The product performance tests of Examples 1-3 and Comparative Examples 1-5 are as follows:

[0124]

[0125] As can be seen from Comparative Examples 1-5 and Example 3, the product of Example 3 has excellent impact toughness, wear resistance grade, and fracture toughness, and the product performance can be coordinately improved. Meanwhile, no modified additive is added, and the performance of the product is significantly deteriorated. In addition, no modified liquid is added in the preparation of the modified additive, no hydroxyapatite agent is added in the modified liquid, the hydroxyapatite agent is replaced by hydroxyapatite, and no silicon carbide whisker liquid is added in the modified liquid, and the performance of the product has a deteriorating trend to varying degrees. Only the product raw material obtained by the specific method of the application has the most significant product performance effect.

[0126] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other embodiments without departing from the scope of the application. The embodiments are therefore to be seen as exemplary and in no way restrictive, the scope of the application being defined by the claims below rather than by the above description, and all variations falling within the meaning and range of equivalency of the essential characteristics of the claims are therefore intended to be embraced therein.

[0127] Furthermore, it should be understood that although the present specification describes exemplary embodiments, the application is not limited to only one independent technical solution in each embodiment, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A highly wear-resistant hot-bending rock plate, characterized in that: It includes the following raw materials in parts by weight: 30-35 parts of kaolin, 20-25 parts of selected ball clay, 10-15 parts of wollastonite, 10-15 parts of super white sand, 8-14 parts of feldspar, 7-12 parts of pyroxene, 6-10 parts of talc, 5-8 parts of bentonite, 4-7 parts of tremolite, 3-5 parts of sodium tripolyphosphate, and 4-7 parts of modifying additives; The modified additive is prepared by mixing mullite and cordierite in a weight ratio of 2:1 and adding the mixture into a modification liquid 3-5 times the total amount of mullite, stirring and modifying the mixture, filtering and drying after stirring. The preparation method of the modified liquid is: Immersing silicon carbide whiskers in a sodium dodecylbenzene sulfonate solution at a concentration of 3-5 times the total amount of the silicon carbide whiskers, followed by adding 10-15% of the total amount of the silicon carbide whiskers in a silane coupling agent KH550 and 4-7% of the total amount of the silicon carbide whiskers in a chitosan solution, and stirring to obtain a silicon carbide whisker solution; 5-8 parts of silicon carbide whisker liquid and 2-4 parts of hydroxyapatite agent are mixed and ball-milled to obtain a modified liquid. The preparation method of the hydroxyapatite agent is as follows: The hydroxyapatite is immersed in a sufficient amount of sodium silicate solution and stirred thoroughly to obtain a hydroxyapatite liquid. 5-8 parts of the hydroxyapatite liquid, 2-4 parts of a phosphate buffer solution and 3-5 parts of boron nitride are mixed and stirred thoroughly, and then filtered and dried to obtain a hydroxyapatite agent.

2. A highly wear-resistant hot-bent rock plate according to claim 1, characterized in that: The kaolin contains aluminum > 35%, whiteness > 75 degrees, and strength > 3MPa; the selected ball clay contains aluminum > 35%, whiteness > 75 degrees, and strength > 3MPa; Wollastonite: calcium oxide > 35%, loss on ignition < 5%, whiteness > 55 degrees; Super white sand: silica>75%, whiteness>75 degrees; Feldspar: total potassium + sodium content > 8%, whiteness > 60 degrees; Pyroxene: total calcium + magnesium > 45%, loss on ignition < 5%, whiteness > 60 degrees; Talc: magnesium oxide >33%, whiteness >75 degrees; bentonite: strength >7MPa, whiteness >55 degrees, alumina >17%; tremolite: total amount of calcium + magnesium >45%, loss on ignition <5%, whiteness >60 degrees.

3. A highly wear-resistant hot-bent rock plate according to claim 2, characterized in that: The stirring modification is carried out at 450-550 r / min, 1-2 h, and a stirring temperature of 50-60°C.

4. A highly wear-resistant hot-bent rock plate according to claim 3, characterized in that: The mass fraction of the sodium dodecylbenzenesulfonate solution is 2-5%; the mass fraction of the chitosan solution is 4-6%.

5. The high wear-resistant hot-bent rock plate according to claim 4, characterized in that: The blending process was performed at a ball milling speed of 1500 r / min for 2 h.

6. The high wear-resistant hot-bent rock plate according to claim 5, characterized in that: The pH value of the phosphate buffer solution is 5.5; the mass fraction of the sodium silicate solution is 2-5%.

7. A method for preparing a high wear-resistant hot-bent rock plate as claimed in claim 1, characterized in that: The following steps are involved: The raw materials are wet-ball milled, then formed in a mold and fired at a temperature of 1300°C for 2 hours to obtain a rock slab. The prepared rock slab is then placed on a high-temperature refractory plate and placed in a hot bending furnace for up and down heating at a temperature of 1300°C. It is then cooled, formed, holes are dug, edges are cut, and edges are ground to obtain a highly wear-resistant hot-bent rock slab.

Citation Information

Patent Citations

  • Reinforcement of alkaline earth aluminosilicate glass-ceramics

    CA1238655A

  • Rock plate with fine skin feeling and preparation method thereof

    CN112723747A

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