Low-dust antibacterial bentonite cat litter and preparation method thereof

Abstract

The invention discloses a low-dust antibacterial bentonite cat litter and a preparation method thereof.The cat litter is composed of sodium bentonite, activated carbon and potassium permanganate, and the preparation method comprises the steps that a bentonite raw material with the expansion index larger than or equal to 20 mL / 2 g is selected, and after smashing, sodium modification and aging treatment are conducted, drying and grinding are conducted; mixing the obtained sodium bentonite and activated carbon according to a ratio of 75-95 wt%: 5-25 wt%, spraying a solution containing 0.2-1 wt% of potassium permanganate in a disc granulator, and granulating by controlling the inclination angle of a disc to be 30-50 degrees and the rotating speed to be 10-30 r / min; and finally, drying at 105 DEG C for 2-4 hours to obtain particles of 1-3mm. The viscosity of bentonite is enhanced through sodium modification, and the synergistic effect of activated carbon adsorption and potassium permanganate oxidation sterilization is matched, so that the product has the characteristics of firm agglomeration and low dust rate, the bacteriostasis rate is greater than or equal to 90%, and the ammonia removal rate is greater than or equal to 85%; the preparation method is simple, efficient and suitable for industrial production, and the problems that traditional bentonite cat litter is poor in caking property, insufficient in antibacterial and deodorizing effect and the like can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of bentonite cat litter preparation, in particular to low-dust antibacterial bentonite cat litter and a preparation method thereof. Background Art

[0002] Cat litter is a must-have for cat-owning families. Currently, the mainstream cat litters on the market include five main categories: bentonite litter, tofu litter, pine wood litter, plant fiber litter, and crystal litter. Bentonite cat litter, due to its excellent water absorption, easy cleanup, and low cost, has captured a large market share and is highly favored by consumers. With the rapid growth of pet cats in my country, the demand for cat litter continues to expand. Bentonite cat litter, due to its excellent cost-effectiveness and practicality, holds broad development prospects.

[0003] However, traditional bentonite cat litter still has many technical defects, mainly including the following aspects: Insufficient clumping performance: Due to the selection of bentonite raw materials and the limitations of processing technology, the particle structure of traditional cat litter is not reasonable enough, which results in it being unable to quickly form solid clumps after absorbing pet urine, or the clumps are loose and fragile, and are easily scattered during cleaning, increasing the difficulty of cleaning for users. The dust problem is prominent: Ordinary bentonite cat litter is prone to generate a large amount of dust during transportation, dumping and use, which not only affects the indoor air quality, but may also cause potential harm to the respiratory health of pets and owners. Poor antibacterial and deodorization effect: Most existing cat litters rely on a single adsorption material (such as activated carbon or zeolite) for odor control, but the adsorption of odor molecules such as ammonia and hydrogen sulfide is not thorough, and there is a lack of effective antibacterial means, which causes cat litter to easily breed bacteria after a period of use, producing unpleasant odors, affecting the living experience of pets and owners. Limited ammonia removal ability: After the urine in the cat litter decomposes, a large amount of ammonia nitrogen (NH4 + ), and traditional bentonite cat litter has weak adsorption and exchange capacity for ammonia nitrogen, which leads to the accumulation of ammonia odor in the cat litter box, affecting environmental hygiene. In response to the above problems, there are some improvement schemes in the existing technology, such as improving the clumping property by adjusting the sodium treatment process of bentonite; adding a small amount of activated carbon or zeolite to enhance the deodorization effect; and using a granulation process to reduce dust generation. However, these methods can often only solve a single problem, and it is difficult to take into account the needs of clumping strength, dust control and long-term antibacterial and deodorization at the same time. For example, simply increasing the amount of activated carbon can improve the deodorization effect, but it may lead to an increase in the cost of cat litter and cannot effectively inhibit bacterial growth; and relying solely on the sodium modification of bentonite, although it can improve the clumping property, it cannot solve the problems of odor and bacterial growth.

[0004] Therefore, in response to the above problems, the present invention provides a low-dust antibacterial bentonite cat litter and a preparation method thereof. The present invention optimizes the bentonite raw materials, introduces a synergistic antibacterial system of activated carbon and potassium permanganate, and combines the disc granulation process to provide a low-dust, highly antibacterial bentonite cat litter preparation scheme, so that while maintaining low cost and high water absorbency, it has excellent clumping strength, low dust characteristics and long-term antibacterial and deodorizing functions, so as to meet the needs of modern pet families for high-quality cat litter. Summary of the Invention

[0005] The invention aims to provide a low-dust antibacterial bentonite cat litter and a preparation method thereof, so as to solve the problems of poor agglomeration, easy breakage of agglomerates, low particle strength, high dust content and weak antibacterial ability of ordinary bentonite cat litter.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A method for preparing low-dust antibacterial bentonite cat litter comprises the following steps:

[0008] (1) Bentonite raw material selection: Use bentonite with a swelling index of not less than 20mL / 2g;

[0009] (2) Bentonite raw material treatment: Grind the bentonite to a particle size of ≤4 cm, add sodium carbonate solution, mix well, control the system moisture ≤30%, and seal and age for 48-52 hours;

[0010] (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder;

[0011] (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use;

[0012] (5) Mixing: Mixing the sodium bentonite powder and the activated carbon for 10 to 12 minutes to obtain a mixed material;

[0013] (6) Disc granulation: The mixed material is fed into the disc granulator, and potassium permanganate solution is sprayed into the disc. The inclination angle and speed of the disc granulator are controlled and granulation is carried out for 18 to 25 minutes to form spherical particles.

[0014] (7) Drying: Place the spherical particles after granulation into a drying device for drying to make the moisture content of the particles ≤10%;

[0015] (8) Screening: The dried particles are screened to obtain particles with a particle size of 1 to 3 mm to obtain finished bentonite cat litter.

[0016] Preferably, in step (2), the amount of sodium carbonate added is 1 to 4 wt% of the mass of bentonite.

[0017] Preferably, in step (5), the amount of the sodium bentonite powder is 75-95 wt%, and the amount of the activated carbon is 5-25 wt%.

[0018] Preferably, in step (6), the amount of potassium permanganate solution added is 0.2 to 1 wt % of the total amount of bentonite, calculated as potassium permanganate.

[0019] Preferably, in step (6), the disc granulator is controlled to have an inclination angle of 30° to 50° and a rotation speed of 10 to 30 r / min.

[0020] Preferably, in step (7), the spherical particles after granulation are placed in a drying device for drying at a drying temperature of 105° C. and a drying time of 2 to 4 hours, so that the moisture content of the particles is ≤10%.

[0021] The present application also claims protection for a low-dust antibacterial bentonite cat litter prepared by the above-mentioned method for preparing the low-dust antibacterial bentonite cat litter, wherein the cat litter has an antibacterial rate of ≥90% and an ammonia removal rate of ≥85%.

[0022] Preferably, the antibacterial rate test is based on GB / T13092-2006, and the ammonia removal rate test is based on T / NCMS001-2023.

[0023] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0024] 1. The present invention has excellent agglomeration performance and is more convenient to clean. Traditional bentonite cat litter often has loose and fragile agglomerates due to unreasonable particle structure. The present invention significantly improves the viscosity and water absorption capacity of bentonite by selecting bentonite raw materials with high expansion index and adopts sodium modification treatment, so that the cat litter can quickly form solid agglomerates after contacting urine and is not easy to break. At the same time, by optimizing the disc granulation process parameters (such as inclination angle, rotation speed, etc.), the particle structure is made more uniform and reasonable, the agglomeration stability is further enhanced, and the cleaning process is made more convenient and efficient.

[0025] 2. The cat litter of the present invention has long-term antibacterial and deodorizing effects, improving the living environment of pets. Traditional cat litters mostly rely on a single adsorbent (such as activated carbon) for deodorization, which has limited effect and cannot inhibit bacterial growth. The present invention innovatively adopts a synergistic system of "bentonite + activated carbon + potassium permanganate". The Na in the bentonite + Can react with NH4 in urine +Ion exchange effectively reduces ammonia nitrogen content; activated carbon, with its rich pore structure, efficiently adsorbs odor molecules such as NH3 and H2S; potassium permanganate, as a strong oxidant, kills bacteria and decomposes organic matter, inhibiting odor generation at the source; the three work synergistically to form an "adsorption-decomposition-antibacterial" cycle mechanism, significantly improving the deodorizing and antibacterial capabilities of cat litter, making the living environment of pets fresher and healthier.

[0026] 3. The cat litter of the present invention has a low-dust design and is safer to use. Traditional bentonite cat litter is prone to generating dust during transportation and use, which affects air quality and respiratory health. The present invention optimizes the granulation process to make the particle surface denser and smoother, significantly reducing dust generation. At the same time, the addition of potassium permanganate not only enhances the antibacterial effect, but also suppresses dust flying to a certain extent, further improving the safety of the product and user experience.

[0027] 4. The present invention adopts disc granulation technology, which is easy to operate and has high production efficiency. The particle size and strength can be flexibly controlled by adjusting process parameters (such as disc inclination angle, rotation speed, etc.) to meet different market demands. The entire preparation process does not require complex equipment or high costs, is easy to achieve large-scale production, and has significant economic and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, some of the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be made based on these drawings without paying any creative work.

[0029] Figure 1 This is a product diagram of low-dust antibacterial bentonite cat litter according to Example 1 of the present invention. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, a specific implementation scheme is now described in detail.

[0031] The present invention is further described below with reference to the following examples, but the present invention is not limited to the following examples. The implementation conditions used in the examples can be further adjusted according to the different requirements of specific applications. The implementation conditions not specified are conventional conditions in the industry. The technical features involved in the various embodiments of the present invention may be combined with each other as long as they do not conflict with each other.

[0032] Example 1

[0033] See attached Figure 1This embodiment provides a method for preparing low-dust antibacterial bentonite cat litter, comprising the following steps:

[0034] (1) Bentonite raw material selection: Use bentonite with a swelling index of 20mL / 2g;

[0035] (2) Bentonite raw material treatment: Bentonite was crushed to a particle size of ≤4 cm, 4 wt% sodium carbonate solution was added, mixed evenly, the water content of the system was controlled to ≤30%, and sealed and aged for 48 h;

[0036] (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder;

[0037] (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use;

[0038] (5) Mixing: Mixing sodium bentonite powder and activated carbon in a mass ratio of 95:5 for 10 min to obtain a mixed material;

[0039] (6) Disc granulation: The mixed material was fed into a disc granulator, and a potassium permanganate solution of 0.2 wt% of the total amount of bentonite was sprayed into the disc at the same time. The atomization pressure was 0.3 MPa. The disc granulator was controlled to have an inclination angle of 30° and a rotation speed of 10 r / min. The granulation was carried out for 20 min until the material formed spherical particles.

[0040] (7) Drying: Place the spherical particles after granulation in a drying device and dry them at 105°C for 3 hours to make the moisture content of the particles ≤10%;

[0041] (8) Screening: The dried particles are screened to obtain particles with a particle size of 1 to 3 mm to obtain finished bentonite cat litter.

[0042] Example 2

[0043] This embodiment provides a method for preparing low-dust antibacterial bentonite cat litter, comprising the following steps:

[0044] (1) Bentonite raw material selection: Use bentonite with a swelling index of 22mL / 2g;

[0045] (2) Bentonite raw material treatment: Bentonite was crushed to a particle size of ≤4 cm, 3 wt% sodium carbonate solution was added, mixed evenly, the water content of the system was controlled to ≤30%, and sealed and aged for 48 h;

[0046] (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder;

[0047] (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use;

[0048] (5) Mixing: Mixing sodium bentonite powder and activated carbon in a mass ratio of 90:10 for 10 min to obtain a mixed material;

[0049] (6) Disc granulation: The mixed material was fed into a disc granulator, and a potassium permanganate solution of 0.4 wt% of the total amount of bentonite was sprayed into the disc at the same time. The atomization pressure was 0.3 MPa. The disc granulator was controlled to have an inclination angle of 40° and a rotation speed of 20 r / min. Granulation was carried out for 20 min until the material formed spherical particles.

[0050] (7) Drying: Place the spherical particles after granulation in a drying device and dry them at 105°C for 3 hours to make the moisture content of the particles ≤10%;

[0051] (8) Screening: The dried particles are screened to obtain particles with a particle size of 1 to 3 mm to obtain finished bentonite cat litter.

[0052] Example 3

[0053] This embodiment provides a method for preparing low-dust antibacterial bentonite cat litter, comprising the following steps:

[0054] (1) Bentonite raw material selection: Use bentonite with a swelling index of 23mL / 2g;

[0055] (2) Bentonite raw material treatment: Bentonite was crushed to a particle size of ≤4 cm, 2 wt% sodium carbonate solution was added, mixed evenly, the water content of the system was controlled to ≤30%, and sealed and aged for 48 h;

[0056] (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder;

[0057] (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use;

[0058] (5) Mixing: Mixing sodium bentonite powder and activated carbon in a mass ratio of 85:15 for 10 min to obtain a mixed material;

[0059] (6) Disc granulation: The mixed material was fed into a disc granulator, and a potassium permanganate solution of 0.6 wt% of the total amount of bentonite was sprayed into the disc at the same time. The atomization pressure was 0.3 MPa. The disc granulator was controlled to have an inclination angle of 50° and a rotation speed of 30 r / min. Granulation was carried out for 20 min until the material formed spherical particles.

[0060] (7) drying: the granulated spherical particles are placed into a drying device and dried at 105°C for 3h, so that the water content of the particles is ≤10%;

[0061] (8) screening: the dried particles are screened, and particles with a particle size of 1-3mm are taken to obtain the finished product bentonite cat litter.

[0062] Example 4

[0063] The present embodiment provides a preparation method of low-dust bacteriostatic bentonite cat litter, comprising the following steps:

[0064] (1) bentonite raw material selection: bentonite with an expansion index of 24mL / 2g is selected;

[0065] (2) bentonite raw material treatment: the bentonite is crushed to a particle size of ≤4cm, 1wt% sodium carbonate solution is added, mixed uniformly, the water content of the system is controlled to be ≤30%, and sealed for aging for 48h;

[0066] (3) bentonite drying and screening: the aged bentonite is dried and ground, and passed through a 100 mesh screen to obtain sodium-based bentonite powder;

[0067] (4) functional additive treatment: active carbon is ground and passed through a 100 mesh screen for use, and a potassium permanganate solution is prepared for use;

[0068] (5) mixing: the sodium-based bentonite powder and the active carbon are mixed at a mass ratio of 80:20 for 10min to obtain a mixture;

[0069] (6) disc granulation: the mixture is fed into a disc granulator, 0.8wt% of the total amount of potassium permanganate solution is sprayed into the disc, the atomization pressure is 0.3MPa, the inclination angle of the disc granulator is controlled to be 40°, and the rotation speed is controlled to be 30r / min to operate, and granulation is performed for 20min to form spherical particles;

[0070] (7) drying: the granulated spherical particles are placed into a drying device and dried at 105°C for 3h, so that the water content of the particles is ≤10%;

[0071] (8) screening: the dried particles are screened, and particles with a particle size of 1-3mm are taken to obtain the finished product bentonite cat litter.

[0072] Example 5

[0073] The present embodiment provides a preparation method of low-dust bacteriostatic bentonite cat litter, comprising the following steps:

[0074] (1) bentonite raw material selection: bentonite with an expansion index of 24mL / 2g is selected;

[0075] (2) Bentonite raw material treatment: Bentonite was crushed to a particle size of ≤4 cm, 1 wt% sodium carbonate solution was added, mixed evenly, the water content of the system was controlled to ≤30%, and sealed and aged for 48 h;

[0076] (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder;

[0077] (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use;

[0078] (5) Mixing: Mixing sodium bentonite powder and activated carbon in a mass ratio of 75:25 for 10 min to obtain a mixed material;

[0079] (6) Disc granulation: The mixed material was fed into a disc granulator, and a potassium permanganate solution of 1 wt% of the total amount of bentonite was sprayed into the disc at the same time. The atomization pressure was 0.3 MPa. The disc granulator was controlled to have an inclination angle of 40° and a rotation speed of 30 r / min. The granulation was carried out for 20 min to form spherical particles.

[0080] (7) Drying: Place the spherical particles after granulation in a drying device and dry them at 105°C for 3 hours to make the moisture content of the particles ≤10%;

[0081] (8) Screening: The dried particles are screened to obtain particles with a particle size of 1 to 3 mm to obtain finished bentonite cat litter.

[0082] Comparative Example 1

[0083] This comparative example is based on the above-mentioned Example 3, and the similarities with the above-mentioned Example 3 are not repeated here.

[0084] The swelling index of the bentonite ore used in this comparative example is 13 ml / 2 g.

[0085] Comparative Example 2

[0086] This comparative example is based on the above-mentioned Example 3, and the similarities with the above-mentioned Example 3 are not repeated here.

[0087] No activated carbon was added in this comparative example.

[0088] Comparative Example 3

[0089] This comparative example is based on the above-mentioned Example 3, and the similarities with the above-mentioned Example 3 are not repeated here.

[0090] Potassium permanganate was not added in this comparative example.

[0091] The bentonite cat litter prepared in the above embodiment and comparative example was tested, and the test results are shown in Table 1.

[0092] Table 1

[0093]

[0094]

[0095] The agglomeration strength, dust rate, bacteriostasis rate and ammonia removal rate of Table 1 are tested according to the following methods respectively:

[0096] The agglomeration strength test is carried out according to the standard “JC / T2055-2020”, and the agglomerates are repeatedly dropped until the agglomerates are broken, and the number of times at this time is recorded as the agglomeration strength;

[0097] The dust rate test is carried out according to the standard “JC / T2055-2020”;

[0098] The bacteriostasis rate test is carried out according to the standard “GB / T13092-2006”, and the difference between the test sample and the blank sample and the ratio of the blank sample are recorded as the bacteriostasis rate;

[0099] The ammonia removal rate test is carried out according to the standard “T / NCMS001-2023”.

[0100] As can be seen from Table 1, different sodium-based bentonite with different expansion indexes is added in the preparation process of Examples 1-5, and the results show that the bentonite with better expansion performance can be compounded with more bacteriostatic additives under the requirement of ensuring certain agglomeration strength; the expansion index of the raw ore in Comparative Example 1 is lower than that in Example 3, and the results show that the agglomeration strength is lower; the results of Comparative Example 2 compared with Example 3 show that the addition of activated carbon has a small effect on the dust rate and agglomeration strength of cat litter, but the bacteriostasis rate is significantly improved; the results of Comparative Example 3 compared with Example 3 show that the addition of potassium permanganate significantly improves the bacteriostasis of cat litter.

[0101] In summary, the present application has excellent agglomeration performance, and is more convenient to clean. Traditional bentonite cat litter is often loose and easy to break due to unreasonable particle structure. The present application optimizes the high-expansion-index bentonite raw material and adopts sodium modification treatment, which significantly improves the viscosity and water absorption capacity of bentonite, so that the cat litter can quickly form a solid mass after contacting with urine and is not easy to break; at the same time, by optimizing the disc granulation process parameters (such as inclination angle, rotation speed, etc.), the particle structure is more uniform and reasonable, which further enhances the agglomeration stability and makes the cleaning process more convenient and efficient; the cat litter of the present application has long-acting bacteriostasis and odor removal, and improves the living environment of pets. Traditional cat litter relies on a single adsorbent (such as activated carbon) for odor removal, which has limited effect and cannot inhibit the growth of bacteria; the present application innovatively uses a “bentonite + activated carbon + potassium permanganate” synergistic system. Na + can react with NH4 +Ion exchange is carried out to effectively reduce the ammonia nitrogen content; activated carbon, with its rich pore structure, efficiently adsorbs odor molecules such as NH3 and H2S; potassium permanganate, as a strong oxidant, can kill bacteria and decompose organic matter, inhibiting the generation of odor from the source; the three work synergistically to form an "adsorption-decomposition-antibacterial" cycle mechanism, greatly improving the deodorizing and antibacterial capabilities of cat litter, making the living environment of pets fresher and healthier; the cat litter of the present invention has a low dust design and is safer to use. Traditional bentonite cat litter is prone to generate dust during transportation and use, affecting air quality and respiratory health; the present invention can By optimizing the granulation process, the surface of the particles is made denser and smoother, and dust generation is significantly reduced; at the same time, the addition of potassium permanganate not only enhances the antibacterial effect, but also suppresses dust flying to a certain extent, further improving the safety of the product and user experience; the present invention adopts disc granulation technology, which is easy to operate and has high production efficiency, and can flexibly control the particle size and strength by adjusting process parameters (such as disc inclination, rotation speed, etc.) to meet different market needs; the entire preparation process does not require complex equipment or high costs, is easy to achieve large-scale production, and has significant economy and market competitiveness.

[0102] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for preparing low-dust antibacterial bentonite cat litter, characterized in that: The steps include: (1) Bentonite raw material selection: Use bentonite with a swelling index of not less than 20mL / 2g; (2) Bentonite raw material treatment: Grind the bentonite to a particle size of ≤4 cm, add sodium carbonate solution, mix well, control the system moisture ≤30%, and seal and age for 48-52 hours; (3) Drying and screening of bentonite: Dry and grind the aged bentonite, and pass it through a 100-mesh sieve to obtain sodium bentonite powder; (4) Functional additive treatment: Grind the activated carbon and pass it through a 100-mesh sieve for later use, and prepare potassium permanganate solution for later use; (5) Mixing: Mixing the sodium bentonite powder and the activated carbon for 10 to 12 minutes to obtain a mixed material; (6) Disc granulation: The mixed material is fed into the disc granulator, and potassium permanganate solution is sprayed into the disc. The inclination angle and speed of the disc granulator are controlled and granulation is carried out for 18 to 25 minutes to form spherical particles. (7) Drying: Place the spherical particles after granulation into a drying device for drying to make the moisture content of the particles ≤10%; (8) Screening: The dried particles are screened to obtain particles with a particle size of 1 to 3 mm to obtain finished bentonite cat litter.

2. The preparation method of low-dust antibacterial bentonite cat litter according to claim 1, wherein In step (2), the amount of sodium carbonate added is 1 to 4 wt% of the mass of bentonite.

3. The preparation method of low-dust antibacterial bentonite cat litter according to claim 1, wherein In step (5), the amount of the sodium bentonite powder is 75-95 wt%, and the amount of the activated carbon is 5-25 wt%.

4. The preparation method of low-dust antibacterial bentonite cat litter according to claim 1, wherein In step (6), the amount of potassium permanganate solution added is 0.2 to 1 wt % of the total amount of bentonite, calculated as potassium permanganate.

5. The preparation method of low-dust antibacterial bentonite cat litter according to claim 1, wherein In step (6), the disc granulator is controlled to have an inclination angle of 30° to 50° and a rotation speed of 10 to 30 r / min.

6. The preparation method of low-dust antibacterial bentonite cat litter according to claim 1, wherein In step (7), the spherical particles after granulation are placed in a drying device for drying at a drying temperature of 105° C. and a drying time of 2 to 4 hours, so that the moisture content of the particles is ≤10%.

7. A low-dust antibacterial bentonite cat litter, characterized in that: The cat litter is prepared by the preparation method of the low-dust antibacterial bentonite cat litter according to any one of claims 1 to 8, wherein the antibacterial rate of the cat litter is ≥90% and the ammonia removal rate is ≥85%.

8. The low-dust antibacterial bentonite cat litter according to claim 7, wherein The antibacterial rate test is based on GB / T13092-2006, and the ammonia removal rate test is based on T / NCMS001-2023.

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