A purple sand sintered body for cigarette flavoring and a preparation method and application thereof

Abstract

The application provides a purple sand sintered body for cigarette flavoring and a preparation method and application thereof, and belongs to the technical field of purple sand materials. The purple sand sintered body for cigarette flavoring is prepared by mixing and sintering Qingshuini purple sand mud and Benshandun purple sand mud in a mass ratio of (90-70):(10-30), wherein the content of Fe2O3 in the Qingshuini purple sand mud is not less than 10.0 wt.%, and the content of K2O in the Benshandun purple sand mud is not less than 5.5 wt.%. The purple sand sintered body for cigarette flavoring does not need to add other preparations, and only needs to mix the Qingshuini purple sand mud rich in iron and the Benshandun purple sand mud rich in potassium, adjust the mass ratio of the two, and construct a multi-catalytic system based on iron and potassium. Further, by optimizing the sintering process, a limited space is created, and the synergistic effect of the multi-metal catalyst is enhanced, so that the generation efficiency of cigarette flavoring substances is significantly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of purple clay materials, and particularly relates to a purple clay sintered body for enhancing the flavor of cigarettes, and a preparation method and application thereof. Background Art

[0002] With the development of society and the improvement of people's living standards, smokers are increasingly seeking a more flavorful experience in cigarettes. Purple clay, as a ceramic material, is highly favored in tea culture for its ability to enhance the flavor and taste of tea. Furthermore, purple clay, with its rich pore structure and adsorption properties, shows great potential for enhancing cigarette flavor. However, its widespread application in cigarettes is largely due to a lack of research on the interaction between purple clay and cigarette smoke.

[0003] Patent publication number CN111713736B discloses environmentally friendly ceramic popping beads for cigarettes and their production method. The process involves mixing purple clay, silicon oxide, and aluminum oxide to form a powder, adding water to form a slurry, then mixing acrylic acid, epoxy resin, methyl methacrylate, methyl ether, ethanolamine, benzoyl peroxide, and deionized water to form a water-based coating. Finally, the slurry and water-based coating are mixed and injected into hollow colloidal resin balls to produce the finished product. The innovation lies in adding silicon oxide and aluminum oxide powders to the porous purple clay material to create a composite ceramic slurry. The pore structure of the purple clay retains moisture and aroma within the popping beads, effectively improving the moisture-retaining and sealing properties of traditional hollow colloidal resin balls.

[0004] The disadvantages of this method are that the addition of silicon oxide and aluminum oxide to purple clay alters its texture and properties, which in turn affects the material's pore structure. Furthermore, the flavor-enhancing effect of the popping beads produced in this paper comes from the added spices, not from the purple clay itself altering the flavoring substances in the cigarettes, particularly their specific content.

[0005] Patent publication number CN112679202A discloses a porous ceramic composition, its preparation method, and an electronic cigarette aerosol core using this ceramic composition. The process involves mixing purple clay, diatomaceous earth, quartz sand, and glass powder, and adding a pore-forming agent to produce the finished product. The innovation lies in the fact that the combination of purple clay and various ceramic components improves the compatibility of the porous ceramic with the e-liquid, enhancing the smoke quality and resolving the problem of poor adhesion between the porous ceramic and the metal heating circuit of the electronic cigarette, resulting in separation and a burnt smell, which is a common problem in existing solutions.

[0006] The disadvantages of this method are that it mixes diatomaceous earth, quartz sand, glass powder, and other materials into the purple clay, which can disrupt the rich pore structure within the clay. Furthermore, the e-cigarette atomizer core produced using this method can improve the taste of cigarettes, primarily by reducing the burnt smell, without increasing the content of flavoring substances.

[0007] Patent publication number CN114149248B discloses a porous ceramic material, its preparation method, heating element, atomizer, and electronic cigarette. The process involves mixing several materials selected from purple clay, kaolin, attapulgite, diatomaceous earth, and vermiculite with a binder to form a blank, which is then sintered to obtain the finished product. The innovation lies in the fact that the porous ceramic produced by mixing purple clay with attapulgite, diatomaceous earth, and vermiculite possesses high mechanical strength and can effectively improve the taste of electronic cigarettes, enhancing the reproduction of the flavor of the e-cigarette liquid.

[0008] Disadvantages of this method: Mixing purple clay with various materials, such as attapulgite, diatomaceous earth, and vermiculite, alters its physical and chemical properties, thus affecting its performance and function. Furthermore, this article only mentions improving the taste of e-cigarettes and recreating the smoking experience of real cigarettes, but does not further describe the impact of porous ceramics on flavor substances, particularly the changes in their specific content.

[0009] Therefore, it is necessary to develop a purple clay sintered body for cigarette flavoring, which can enrich people's flavor experience of cigarettes and meet the market demand for healthy and natural beverage containers. Summary of the Invention

[0010] The purpose of the present invention is to overcome the defects of the prior art and provide a method for preparing a purple sand sintered body for enhancing the flavor of cigarettes, and a preparation method and application thereof.

[0011] The present invention provides the following technical solutions:

[0012] The present invention provides a method for preparing a purple sand sintered body for enhancing cigarette flavor, comprising the following steps:

[0013] S1. Grind and sieve clear water purple clay and Benshan Duan clay purple clay separately, wherein the clear water purple clay has a TiO2 content of not less than 0.9 wt.%; the Benshan Duan clay purple clay has a K2O content of not less than 2.0 wt.% and a MgO content of not less than 0.6 wt.%;

[0014] S2, uniformly mixing the water-clear purple sand clay material and the Benshan Duan clay purple sand clay material obtained in step S1 according to a proportion to obtain a binary purple sand mixed clay material, wherein the mass ratio of the water-clear purple sand clay material to the Benshan Duan clay purple sand clay material is (95-60):(5-40);

[0015] S3, adding pure water to the binary purple sand mixed clay obtained in step S2, and performing vacuum kneading to obtain clay blocks;

[0016] S4, pressing the clay block obtained in step S3 into a green body, and then bisque firing the green body to obtain the purple clay sintered body.

[0017] Furthermore, in step S1, a Raymond mill is used for crushing and screening, wherein the clear water purple clay material is screened to 100 mesh, and the Benshan Duan mud purple clay material is screened to 300 mesh.

[0018] Furthermore, in step S2: the clean cement purple clay material and the Benshan Duan mud purple clay material are stirred and mixed for 30 minutes and then ball milled; the ball milling speed is 800 rpm; the ball milling time is 4 hours; the grinding medium is 3 mm zirconia balls; and the sieve mesh number is 500 mesh.

[0019] Furthermore, in step S3: pure water accounting for 30 wt.% of the total weight of the binary purple clay mixture is added to the binary purple clay mixture, and a mechanical vacuum clay kneading machine is used to knead the clay to obtain clay blocks, and the obtained clay blocks are aged for a period of more than 2 months.

[0020] Furthermore, in step S4, the bisque firing of the green body is specifically as follows: the green body is fired at a temperature of 1000-1200°C. The temperature is raised from room temperature to 300°C at a heating rate of 3°C / min; then the temperature is raised from 300°C to 800°C at a heating rate of 5°C / min, and the temperature is held at 800°C for 30 minutes; finally, the temperature is raised from 800°C to 1000-1200°C at a heating rate of 4°C / min, and the temperature is held at the final temperature for 12 hours; and the green body is cooled in the furnace to obtain the purple clay sintered body for cigarette flavoring.

[0021] The present invention also provides a cigarette flavoring purple sand sintered body produced by the preparation method.

[0022] The invention also provides application of the purple sand sintered body for enhancing cigarette flavor in cigarette filter beads.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention eliminates the need for additional additives. Instead, it selects two natural purple clay materials: iron-rich Qingshui purple clay and potassium-rich Benshan Duan clay. By defining the mass ratio of these two materials, a multi-metal catalyst system based on iron and potassium is constructed. Furthermore, by defining the sintering process to create pores and confined spaces, the synergistic effect of the multi-metal catalysts is enhanced, significantly improving the efficiency of cigarette flavor production. The purple clay sintered body used for cigarette flavoring retains the original appearance and properties of purple clay while also increasing the amount of flavor in cigarettes, enriching the flavor experience and remaining non-toxic to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the SEM image of the sintered body prepared in Example 1;

[0026] Figure 2 for Figure 1 EDS spectrum of the middle spot1 area;

[0027] Figure 3 for Figure 1 EDS spectrum of the middle spot2 area;

[0028] Figure 4 This is an SEM image of the sintered body prepared in Example 4;

[0029] Figure 5 for Figure 4 EDS spectrum of the middle spot1 area;

[0030] Figure 6 for Figure 4 EDS spectrum of the middle spot2 area;

[0031] Figure 7 This is an SEM image of the sintered body prepared in Example 5;

[0032] Figure 8 for Figure 7 EDS spectrum of the middle spot1 area;

[0033] Figure 9 for Figure 7 EDS spectrum of the middle spo2 region;

[0034] Figure 10 The radar charts of flavor substances in smoke after passing through absorbent cotton and different purple clay filter beads, measured by gas chromatography-mass spectrometry (GC-MS), include absorbent cotton and purple clay filter beads of Examples 1-5 of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] The steps for preparing the purple sand sintered material for cigarette flavoring are as follows:

[0038] S1. Select clear water purple clay and Benshan Duan mud purple clay as the basic materials for preparing purple clay sintered bodies, wherein the Fe2O3 content in the clear water purple clay is not less than 10.0wt.%, and the K2O content in the Benshan Duan mud purple clay is not less than 5.5wt.%; and the two kinds of clay are dried separately to ensure that the water content of the two kinds of clay is less than 10wt.%. Subsequently, the dried clay is crushed and sieved using a Raymond mill to further refine the particle size. Specifically, the clear water purple clay needs to be sieved to 50 mesh; and the Benshan Duan mud purple clay needs to be sieved to 200 mesh.

[0039] S2. The water-based purple clay obtained in step S1 and the Benshan Duan clay purple clay were mixed in a mass ratio of 80:20. Specifically, 3.2 kg of water-based purple clay and 0.8 kg of Benshan Duan clay were placed in a blender and mixed for 30 minutes. The mixture was then further refined in a ball mill to obtain a binary purple clay mixture. The ball milling conditions were set at a speed of 500 rpm for 2 hours, using 3 mm zirconia balls as the grinding medium, and finally sieved to 200 mesh.

[0040] S3, add 30wt.% of pure water of the total amount of mud to the binary purple sand mixed mud obtained in step S2, use a mechanical vacuum mud kneading machine to knead mud until a uniform mud block is obtained. After the kneaded mud block is packaged, it is sent to the cellar for aging treatment, and the aging time is 2 months.

[0041] S4. Press the aged clay blocks into green bodies. During the firing process, the final temperature is set at 1166°C. The sintering process is as follows: (1) heating from room temperature to 300°C at a heating rate of 3°C / min; (2) heating from 300°C to 800°C at a heating rate of 5°C / min, and staying at 800°C for 30 minutes; (3) heating from 800°C to 1166°C at a heating rate of 4°C / min, and staying at the final temperature for 8 hours; (4) cooling in the furnace to produce the purple clay sintered body for cigarette flavoring.

[0042] Example 2

[0043] S1. Selecting clear water purple sand clay and Benshan Duan mud purple sand clay as the basic materials for preparing purple sand sintered bodies, wherein the Fe2O3 content in the clear water purple sand clay and the K2O content in the Benshan Duan mud purple sand clay are the same as those in Example 1; and the two mud materials are dried separately to ensure that the water content of the two mud materials is less than 10wt.%. Subsequently, the dried mud materials are crushed and sieved using a Raymond mill to further refine the particle size. Specifically, the clear water purple sand clay needs to be sieved to 50 mesh; and the Benshan Duan mud purple sand clay needs to be sieved to 200 mesh.

[0044] S2. The water-based purple clay obtained in step S1 and the Benshan Duan clay purple clay were mixed in a mass ratio of 90:10. Specifically, 3.6 kg of water-based purple clay and 0.4 kg of Benshan Duan clay were placed in a blender and mixed for 30 minutes. The mixture was then further refined in a ball mill to obtain a binary purple clay mixture. The ball milling conditions were set at a speed of 500 rpm for 2 hours using 3 mm zirconia balls as the grinding medium, and the mixture was finally sieved to 200 mesh.

[0045] S3, add 30wt.% of pure water of the total amount of mud to the binary purple sand mixed mud obtained in step S2, use a mechanical vacuum mud kneading machine to knead mud until a uniform mud block is obtained. After the kneaded mud block is packaged, it is sent to the cellar for aging treatment, and the aging time is 2 months.

[0046] S4. Press the aged clay blocks into green bodies. During the firing process, the final temperature is set at 1166°C. The sintering process is as follows: (1) heating from room temperature to 300°C at a heating rate of 3°C / min; (2) heating from 300°C to 800°C at a heating rate of 5°C / min, and staying at 800°C for 30 minutes; (3) heating from 800°C to 1166°C at a heating rate of 4°C / min, and staying at the final temperature for 8 hours; (4) cooling in the furnace to produce the purple clay sintered body for cigarette flavoring.

[0047] Example 3

[0048] S1. Selecting clear water purple sand clay and Benshan Duan mud purple sand clay as the basic materials for preparing purple sand sintered bodies, wherein the Fe2O3 content in the clear water purple sand clay and the K2O content in the Benshan Duan mud purple sand clay are the same as those in Example 1; and the two mud materials are dried separately to ensure that the water content of the two mud materials is less than 10wt.%. Subsequently, the dried mud materials are crushed and sieved using a Raymond mill to further refine the particle size. Specifically, the clear water purple sand clay needs to be sieved to 50 mesh; and the Benshan Duan mud purple sand clay needs to be sieved to 200 mesh.

[0049] S2. The water-based purple clay obtained in step S1 and the Benshan Duan clay purple clay were mixed in a mass ratio of 70:30. Specifically, 2.8 kg of water-based purple clay and 1.2 kg of Benshan Duan clay were placed in a blender and mixed for 30 minutes. The mixture was then further refined in a ball mill to obtain a binary purple clay mixture. The ball milling conditions were set at a speed of 500 rpm for 2 hours using 3 mm zirconia balls as the grinding medium, and the mixture was finally sieved to 200 mesh.

[0050] S3, add 30wt.% of pure water of the total amount of mud to the binary purple sand mixed mud obtained in step S2, use a mechanical vacuum mud kneading machine to knead mud until a uniform mud block is obtained. After the kneaded mud block is packaged, it is sent to the cellar for aging treatment, and the aging time is 2 months.

[0051] S4. Press the aged clay blocks into green bodies. During the firing process, the final temperature is set at 1166°C. The sintering process is as follows: (1) heating from room temperature to 300°C at a heating rate of 3°C / min; (2) heating from 300°C to 800°C at a heating rate of 5°C / min, and staying at 800°C for 30 minutes; (3) heating from 800°C to 1166°C at a heating rate of 4°C / min, and staying at the final temperature for 8 hours; (4) cooling in the furnace to produce the purple clay sintered body for cigarette flavoring.

[0052] Example 4

[0053] S1. Selecting clear water purple sand clay and Benshan Duan mud purple sand clay as the basic materials for preparing purple sand sintered bodies, wherein the Fe2O3 content in the clear water purple sand clay and the K2O content in the Benshan Duan mud purple sand clay are the same as those in Example 1; and the two mud materials are dried separately to ensure that the water content of the two mud materials is less than 10wt.%. Subsequently, the dried mud materials are crushed and sieved using a Raymond mill to further refine the particle size. Specifically, the clear water purple sand clay needs to be sieved to 50 mesh; and the Benshan Duan mud purple sand clay needs to be sieved to 200 mesh.

[0054] S2. The water-based purple clay obtained in step S1 and the Benshan Duan clay purple clay were mixed in a mass ratio of 80:20. Specifically, 3.2 kg of water-based purple clay and 0.8 kg of Benshan Duan clay were placed in a blender and mixed for 30 minutes. The mixture was then further refined in a ball mill to obtain a binary purple clay mixture. The ball milling conditions were set at a speed of 500 rpm for 2 hours using 3 mm zirconia balls as the grinding medium, and the mixture was finally sieved to 200 mesh.

[0055] S3, add 30wt.% of pure water of the total amount of mud to the binary purple sand mixed mud obtained in step S2, use a mechanical vacuum mud kneading machine to knead mud until a uniform mud block is obtained. After the kneaded mud block is packaged, it is sent to the cellar for aging treatment, and the aging time is 2 months.

[0056] S4. Press the aged clay blocks into green bodies. During the firing process, the final temperature is set at 1050°C. The sintering process is as follows: (1) heating from room temperature to 300°C at a heating rate of 3°C / min; (2) heating from 300°C to 800°C at a heating rate of 5°C / min, and staying at 800°C for 30 minutes; (3) heating from 800°C to 1050°C at a heating rate of 4°C / min, and staying at the final temperature for 8 hours; (4) cooling in the furnace to produce the purple clay sintered body for cigarette flavoring.

[0057] Example 5

[0058] S1. Selecting clear water purple sand clay and Benshan Duan mud purple sand clay as the basic materials for preparing purple sand sintered bodies, wherein the Fe2O3 content in the clear water purple sand clay and the K2O content in the Benshan Duan mud purple sand clay are the same as those in Example 1; and the two mud materials are dried separately to ensure that the water content of the two mud materials is less than 10wt.%. Subsequently, the dried mud materials are crushed and sieved using a Raymond mill to further refine the particle size. Specifically, the clear water purple sand clay needs to be sieved to 50 mesh; and the Benshan Duan mud purple sand clay needs to be sieved to 200 mesh.

[0059] S2. The water-based purple clay obtained in step S1 and the Benshan Duan clay purple clay were mixed in a mass ratio of 80:20. Specifically, 3.2 kg of water-based purple clay and 0.8 kg of Benshan Duan clay purple clay were placed in a blender and mixed for 30 minutes. The mixture was then further refined in a ball mill to obtain a binary purple clay mixture. The ball milling conditions were set at a speed of 500 rpm for 2 hours, using 3 mm zirconia balls as the grinding medium, and finally sieved to 200 mesh.

[0060] S3, add 30wt.% of pure water of the total amount of mud to the binary purple sand mixed mud obtained in step S2, use a mechanical vacuum mud kneading machine to knead mud until a uniform mud block is obtained. After the kneaded mud block is packaged, it is sent to the cellar for aging treatment, and the aging time is 2 months.

[0061] S4. Press the aged clay blocks into green bodies. During the firing process, the final temperature is set at 1300°C. The sintering process is as follows: (1) heating from room temperature to 300°C at a heating rate of 3°C / min; (2) heating from 300°C to 800°C at a heating rate of 5°C / min, and staying at 800°C for 30 minutes; (3) heating from 800°C to 1300°C at a heating rate of 4°C / min, and staying at the final temperature for 8 hours; (4) cooling in the furnace to produce the purple clay sintered body for cigarette flavoring.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0063] Performance testing:

[0064] The mud blocks after the processes S1 to S3 of Examples 1, 2 and 3 of the present invention and the clear water purple clay and Benshan Duan mud purple clay used in Examples 1-5 were subjected to X-ray fluorescence spectrometer (XRF) chemical composition analysis, and the results are shown in Table 1.

[0065] Table 1

[0066]

[0067] As can be seen from Table 1, in Example 1 of the present invention, the clean water purple clay material and the Benshan Duan mud purple clay material are uniformly mixed and the chemical composition of the clay is changed through steps S1 to S3. The addition of the clean water purple clay material increases the content of iron (derived from Fe2O3), while the addition of the Benshan Duan mud purple clay material increases the content of potassium (derived from K2O).

[0068] The sintered body prepared in Example 1 was subjected to SEM test analysis and regional EDS spectrum analysis. The results are shown in Figure 1-Figure 3 ;

[0069] The sintered body prepared in Example 4 was subjected to SEM test analysis and regional EDS spectrum analysis. The results are shown in Figure 4-Figure 6 ;

[0070] The sintered body prepared in Example 5 was subjected to SEM test analysis and regional EDS spectrum analysis. The results are shown in Figure 7-Figure 9 .

[0071] The difference between the preparation processes of Example 1, Example 4 and Example 5 is that the final sintering temperature is different. Figures 1-9 It can be seen from the figure that in Example 1, under the appropriate binary clay ratio and the appropriate sintering temperature, a large number of pore structures will be generated on the surface of the sintered body, and at the same time, a high content of iron-potassium will be enriched in the pores.

[0072] The radar diagram of flavor substances after the smoke passed through absorbent cotton and different purple sand filter beads was obtained by gas chromatography-mass spectrometry (GC-MS) testing method, including absorbent cotton and purple sand filter beads prepared in Examples 1-5. The results are shown in FIG. Figure 10 .

[0073] The integrated peak areas of flavor substances after the smoke passed through absorbent cotton and different purple clay filter beads were semi-quantitatively obtained by gas chromatography-mass spectrometry (GC-MS) testing method, including absorbent cotton and purple clay filter beads prepared in Examples 1-5. The results are shown in Table 2.

[0074] Table 2

[0075]

[0076] * Substance 1 is Sulfoxonium, dimethyl-, 2-oxoethylide (9CI),

[0077] * Substance 2 is 1-(4-((3-aminopropyl)amino)butyl)guanidine.

[0078] Figure 10 Table 2 shows that cigarettes filtered through binary purple clay filters with iron-potassium enriched channels significantly increase the content of unique flavor compounds compared to absorbent cotton. Furthermore, the optimal binary clay ratio and sintering temperature yield optimal smoke flavor enhancement.

[0079] The present invention combines iron-rich clear water purple clay with potassium-rich Benshan Duan clay. By adjusting the mass ratio of the two and controlling the sintering temperature, the resulting sintered purple clay body develops pores where iron and potassium are concentrated. This enhances the catalytic effect through confinement, achieving the dual purple clay's ability to enhance the flavor of cigarette smoke. Specifically, the clear water purple clay has an Fe2O3 content of no less than 10.0 wt.%, while the Benshan Duan clay has a K2O content of no less than 5.5 wt.%.

[0080] The present invention sets a limit on the firing temperature and time: the final temperature setting temperature is 1050-1300℃. The sintering system is as follows: (1) heating from room temperature to 300℃ at a heating rate of 3℃ / min; (2) heating from 300℃ to 800℃ at a heating rate of 5℃ / min, and staying at 800℃ for 30 minutes; (3) heating from 800℃ to the final temperature at a heating rate of 4℃ / min, and staying at the final temperature for 8 hours; (4) cooling with the furnace. In the sintering system of the present invention, the setting of the final temperature will affect whether the iron-potassium metal oxide is fully reacted and melted, and also affect the formation of the pore structure on the surface of the purple clay. If the temperature is too low, on the one hand, the iron-potassium metal oxide is not melted and does not react, and has no catalytic activity. On the other hand, the large amount of silicate in the purple clay cannot be melted in the presence of iron, alkali metal, alkaline earth metal and other co-solvents to produce pores. However, if the temperature is too high, a large amount of mullite phase will produce metal encapsulation, which inhibits the catalytic activity.

[0081] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a purple sand sintered body for cigarette flavoring, characterized in that: The following steps are involved: S1. Grind and sieve clear water purple clay and Benshan Duan clay purple clay separately, wherein the Fe2O3 content in the clear water purple clay is not less than 10.0 wt.%, and the K2O content in the Benshan Duan clay purple clay is not less than 5.5 wt.%; S2. Evenly mix the water-clear purple sand clay material and the Benshan Duan mud purple sand clay material obtained in step S1 according to a proportion to obtain a binary purple sand mixed clay material, wherein the mass ratio of the water-clear purple sand clay material to the Benshan Duan mud purple sand clay material is (90-70):(10-30); S3, adding pure water to the binary purple sand mixed clay obtained in step S2, and performing vacuum kneading to obtain clay blocks; S4, pressing the clay block obtained in step S3 into a green body, and then bisque firing the green body to obtain the purple clay sintered body; In step S4, the bisque firing of the green body is specifically as follows: the firing temperature of the green body is 1050-1300°C; the temperature is raised from room temperature to 300°C at a heating rate of 3°C / min; the temperature is then raised from 300°C to 800°C at a heating rate of 5°C / min, and the temperature is kept at 800°C for 30 minutes; finally, the temperature is raised from 800°C to the final temperature at a heating rate of 4°C / min, and the temperature is kept at the final temperature for 8 hours; and the purple clay sintered body for cigarette flavoring is obtained by cooling in the furnace.

2. The method for preparing a purple sand sintered body for cigarette flavoring according to claim 1, characterized in that: In step S1, a Raymond mill is used for crushing and screening, wherein the water-based purple clay material is screened to 50 mesh, and the Benshan Duan mud purple clay material is screened to 200 mesh.

3. The method for preparing a purple sand sintered body for cigarette flavoring according to claim 1, characterized in that: In step S2: the cleaned water purple clay material and the Benshan Duan mud purple clay material are stirred and mixed for 30 minutes and then ball milled; the ball milling speed is 500 rpm; the ball milling time is 2 hours; the grinding medium is 3 mm zirconia balls; and the sieve mesh number is 200 mesh.

4. The method for preparing a purple sand sintered body for cigarette flavoring according to claim 1, wherein: In step S3: pure water accounting for 30 wt.% of the total weight of the binary purple clay mixture is added to the binary purple clay mixture, and a mechanical vacuum clay kneading machine is used to knead the clay to obtain clay blocks, and the obtained clay blocks are aged for a period of more than 2 months.

5. A purple sand sintered body for cigarette flavoring, characterized in that: The purple clay sintered body for cigarette flavoring is prepared by the preparation method of any one of claims 1 to 4.

6. Use of the purple clay sintered body for cigarette flavoring as claimed in claim 5 in cigarette filter beads.

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