Cat litter and method of making same

Abstract

This invention discloses a cat litter comprising the following raw materials in parts by weight: 40-60 parts bamboo extract, 10-20 parts soybean residue powder, 5-10 parts sweet potato residue powder, 4-8 parts pine sawdust, 30-50 parts bentonite, 5-8 parts diatomaceous earth, 5-8 parts volcanic rock particles, 4-6 parts perlite powder, 0.5-1.5 parts anthocyanin, and 4-6 parts binder. This invention also discloses a method for preparing the cat litter, comprising the following steps: S1. Raw material preparation; S2. Preliminary mixing of raw materials; S3. Grinding; S4. Liquid preparation; S5. Secondary mixing; S6. Granulation; S7. Drying. This invention, by adding bamboo extract, makes the raw materials green and healthy, increasing safety in use. Simultaneously, the addition of soybean residue powder, sweet potato residue powder, and pine sawdust not only reduces material costs but also increases softness and absorbency. When discarded, it can be directly buried in the ground as soil fertilizer, is environmentally friendly and biodegradable, safe and pollution-free, and the raw materials are renewable, thereby increasing resource utilization.

Description

Technical Field

[0001] This invention belongs to the field of cat litter technology, specifically relating to a cat litter and its preparation method. Background Technology

[0002] Cat litter is used by cat owners to bury their cats' feces and urine. It has good absorbency and is usually used in conjunction with a litter box. An appropriate amount of cat litter is poured into the litter box, and a trained cat will walk into the box and bury its feces on top when it needs to relieve itself. Generally, cat litter is made by grinding paper pulp into small granules to simulate sand and provide absorbency. Some also use granules containing physical desiccants such as silica gel. Antibacterial agents, deodorizers, and preservatives are usually added. Cat litter clumps together when it comes into contact with water, making it easier for owners to clean up their cats' feces and urine and reducing pollution in the living space.

[0003] While the millet-based plant-based cat litter disclosed in announcement number CN114982646A achieves the following: all raw materials used are plant-based, pollution-free, odorless, easily soluble in water, and flushable; the natural plant enzymes added to the cat litter can instantly decompose the ammonia absorbed by the litter; the finished millet-based plant-based cat litter prepared by this invention has a flake or granular structure with a diameter of less than 3mm, and the cat's feel is close to that of natural sand, without being prickly, and actual tests show that cats easily accept it without needing an adaptation period, it does not solve the problems that still exist in existing cat litter and its preparation methods: the high softness of the cat litter reduces the cat's comfort; the use of more natural materials increases production costs; and it is inconvenient to test the pH of the cat's urine, thus making it impossible to understand the cat's health status in a timely manner. Therefore, we propose a cat litter and its preparation method. Summary of the Invention

[0004] The purpose of this invention is to provide a cat litter and a method for preparing the same, in order to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cat litter comprising the following raw materials in parts by weight: 40-60 parts bamboo extract, 10-20 parts soybean residue powder, 5-10 parts sweet potato residue powder, 4-8 parts pine sawdust, 30-50 parts bentonite, 5-8 parts diatomaceous earth, 5-8 parts volcanic rock particles, 4-6 parts perlite powder, 0.5-1.5 parts anthocyanin, and 4-6 parts binder.

[0006] Preferably, the raw material composition includes the following parts by weight: 50 parts bamboo extract, 15 parts soybean residue powder, 8 parts sweet potato residue powder, 6 parts pine sawdust, 40 parts bentonite, 7 parts diatomaceous earth, 7 parts volcanic rock particles, 5 parts perlite powder, 1 part anthocyanin, and 5 parts binder.

[0007] Preferably, the adhesive comprises one or more of guar gum, acacia gum, and sodium carboxymethyl starch.

[0008] A method for preparing cat litter, comprising the following steps:

[0009] S1. Raw material preparation: Prepare the following raw materials in parts by weight: 40-60 parts bamboo extract, 10-20 parts soybean residue powder, 5-10 parts sweet potato residue powder, 4-8 parts pine sawdust, 30-50 parts bentonite, 5-8 parts diatomaceous earth, 5-8 parts volcanic rock granules, 4-6 parts perlite powder, 0.5-1.5 parts anthocyanin, and 4-6 parts binder;

[0010] S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder;

[0011] S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder;

[0012] S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution;

[0013] S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste.

[0014] S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules;

[0015] S7. Drying: The mixed particles are dried and then cooled to obtain the finished cat litter.

[0016] Preferably, the method for preparing the bamboo extract includes:

[0017] S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products;

[0018] S102. Soak the pulverized bamboo material in NaOH solution for 1-3 hours. After soaking, add acid solution to adjust the pH value to obtain a bamboo aqueous solution with a pH value of 5.6-6.6.

[0019] S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

[0020] Preferably, the method for preparing the soybean residue powder includes:

[0021] S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it.

[0022] S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder.

[0023] S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

[0024] Preferably, in step S203, the drying temperature of the dryer is 120℃-160℃, the drying time is 30-60min, and the moisture content of the soybean residue powder is 6-10%; in step S202, the crushed soybean residue is passed through a 70-90 mesh sieve.

[0025] Preferably, the sweet potato residue powder is prepared using the same method as the soybean residue powder.

[0026] Preferably, the cat litter has a particle diameter of 3-5 mm and a length of 0.4-1.2 cm.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) By adding bamboo extract, this invention makes the raw materials green and healthy, and increases the safety of use. At the same time, the addition of soybean residue powder, sweet potato residue powder and pine sawdust not only reduces the material cost, but also increases the softness and water absorption. When discarded, it can be directly buried in the ground as soil fertilizer.

[0029] It is environmentally friendly and biodegradable, safe and pollution-free, and the raw materials are renewable, thereby increasing resource utilization.

[0030] (2) The cat litter in this invention is made by mixing anthocyanins with other raw materials in a certain proportion, granulating and drying. By adding anthocyanins, the color change of anthocyanins in the pet's excrement at different acidity and alkalinity can be used to determine whether the pet is healthy. For example, if the pet eats too much meat, the excrement will be acidic and the anthocyanins will turn red. If the pet eats too many vegetables, the excrement will be alkaline and the anthocyanins will turn green. In severe cases, the anthocyanins will turn yellow. Normal anthocyanins do not change color. The pH of the cat's excrement can be monitored at any time, so as to understand the cat's health status in a timely manner.

[0031] (3) The addition of diatomaceous earth to the raw materials of this invention can improve the odor adsorption capacity of cat litter and effectively improve the deodorization performance of cat litter. In addition, the addition of volcanic rock particles can utilize the mildew resistance of volcanic rock particles to enable the cat litter to inhibit the growth of mold in humid environments and have high antibacterial properties. In addition, volcanic rock particles also have high heat insulation effect, thereby improving the quality of cat litter. Furthermore, by mixing anthocyanins with pine wood chips into the gaps of volcanic rock particles, an effective protective effect is formed on anthocyanins, extending the effective service life of anthocyanins. Even if they are stored in the air for a long time, they will not undergo chemical reactions and become naturally ineffective, thus extending the service life of cat litter. Attached Figure Description

[0032] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Please see Figure 1 The present invention provides a technical solution: a cat litter comprising the following raw materials in parts by weight: 40 parts bamboo extract, 10 parts soybean residue powder, 5 parts sweet potato residue powder, 4 parts pine sawdust, 30 parts bentonite, 5 parts diatomaceous earth, 5 parts volcanic rock particles, 4 parts perlite powder, 0.5 parts anthocyanin, and 4 parts binder.

[0036] In this embodiment, preferably, the adhesive includes guar gum.

[0037] A method for preparing cat litter, comprising the following steps:

[0038] S1. Raw material preparation: Prepare the following raw materials by weight: 40 parts bamboo extract, 10 parts soybean residue powder, 5 parts sweet potato residue powder, 4 parts pine sawdust, 30 parts bentonite, 5 parts diatomaceous earth, 5 parts volcanic rock granules, 4 parts perlite powder, 0.5 parts anthocyanin, and 4 parts binder.

[0039] S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder;

[0040] S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder;

[0041] S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution;

[0042] S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste.

[0043] S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules;

[0044] S7. Drying: The mixed particles are dried and then cooled to obtain the finished cat litter.

[0045] In this embodiment, preferably, the preparation method of the bamboo extract includes:

[0046] S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products;

[0047] S102. The pulverized bamboo material is soaked in NaOH solution for 1 hour. After soaking, acid solution is added to adjust the pH value to obtain a bamboo aqueous solution with a pH value of 5.6.

[0048] S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

[0049] In this embodiment, preferably, the method for preparing the soybean residue powder includes:

[0050] S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it.

[0051] S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder.

[0052] S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

[0053] In this embodiment, preferably, in step S203, the drying temperature of the dryer is 120°C, the drying time is 30 minutes, and the moisture content of the soybean residue powder is 6%; in step S202, the pulverized soybean residue is passed through a 70-mesh sieve.

[0054] In this embodiment, preferably, the sweet potato residue powder is prepared using the same method as the soybean residue powder.

[0055] In this embodiment, preferably, the cat litter has a particle diameter of 3mm and a length of 0.4cm.

[0056] Example 2

[0057] Please see Figure 1 The present invention provides a technical solution: a cat litter comprising the following raw materials in parts by weight: 60 parts bamboo extract, 20 parts soybean residue powder, 10 parts sweet potato residue powder, 8 parts pine sawdust, 50 parts bentonite, 8 parts diatomaceous earth, 8 parts volcanic rock particles, 6 parts perlite powder, 1.5 parts anthocyanin, and 6 parts binder.

[0058] In this embodiment, preferably, the adhesive includes acacia gum.

[0059] A method for preparing cat litter, comprising the following steps:

[0060] S1. Raw material preparation: Prepare the following raw materials by weight: 60 parts bamboo extract, 20 parts soybean residue powder, 10 parts sweet potato residue powder, 8 parts pine sawdust, 50 parts bentonite, 8 parts diatomaceous earth, 8 parts volcanic rock granules, 6 parts perlite powder, 1.5 parts anthocyanin, and 6 parts binder.

[0061] S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder;

[0062] S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder;

[0063] S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution;

[0064] S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste.

[0065] S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules;

[0066] S7. Drying: The mixed particles are dried and then cooled to obtain the finished cat litter.

[0067] In this embodiment, preferably, the preparation method of the bamboo extract includes:

[0068] S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products;

[0069] S102. The pulverized bamboo material is soaked in NaOH solution for 3 hours. After soaking, acid solution is added to adjust the pH value to obtain a bamboo aqueous solution with a pH value of 6.6.

[0070] S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

[0071] In this embodiment, preferably, the method for preparing the soybean residue powder includes:

[0072] S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it.

[0073] S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder.

[0074] S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

[0075] In this embodiment, preferably, in step S203, the drying temperature of the dryer is 160°C, the drying time is 60 minutes, and the moisture content of the soybean residue powder is 10%; in step S202, the crushed soybean residue is passed through a 90-mesh sieve.

[0076] In this embodiment, preferably, the sweet potato residue powder is prepared using the same method as the soybean residue powder.

[0077] In this embodiment, preferably, the cat litter has a particle diameter of 5mm and a length of 1.2cm.

[0078] Example 3

[0079] Please see Figure 1 The present invention provides a technical solution: a cat litter comprising the following raw materials in parts by weight: 50 parts bamboo extract, 15 parts soybean residue powder, 7 parts sweet potato residue powder, 6 parts pine sawdust, 40 parts bentonite, 7 parts diatomaceous earth, 6 parts volcanic rock particles, 5 parts perlite powder, 0.8 parts anthocyanin, and 5 parts binder.

[0080] In this embodiment, preferably, the adhesive comprises sodium carboxymethyl starch.

[0081] A method for preparing cat litter, comprising the following steps:

[0082] S1. Raw material preparation: Prepare the following raw materials by weight: 50 parts bamboo extract, 15 parts soybean residue powder, 7 parts sweet potato residue powder, 6 parts pine sawdust, 40 parts bentonite, 7 parts diatomaceous earth, 6 parts volcanic rock granules, 5 parts perlite powder, 0.8 parts anthocyanin, and 5 parts binder.

[0083] S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder;

[0084] S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder;

[0085] S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution;

[0086] S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste.

[0087] S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules;

[0088] S7. Drying: The mixed particles are dried and then cooled to obtain the finished cat litter.

[0089] In this embodiment, preferably, the preparation method of the bamboo extract includes:

[0090] S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products;

[0091] S102. The pulverized bamboo material is soaked in NaOH solution for 2 hours. After soaking, acid solution is added to adjust the pH value to obtain a bamboo aqueous solution with a pH value of 6.2.

[0092] S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

[0093] In this embodiment, preferably, the method for preparing the soybean residue powder includes:

[0094] S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it.

[0095] S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder.

[0096] S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

[0097] In this embodiment, preferably, in step S203, the drying temperature of the dryer is 140°C, the drying time is 40 minutes, and the moisture content of the soybean residue powder is 8%; in step S202, the pulverized soybean residue is passed through an 80-mesh sieve.

[0098] In this embodiment, preferably, the sweet potato residue powder is prepared using the same method as the soybean residue powder.

[0099] In this embodiment, preferably, the cat litter has a particle diameter of 4mm and a length of 0.8cm.

[0100] Example 4

[0101] Please see Figure 1 The present invention provides a technical solution: a cat litter comprising the following raw materials in parts by weight: 45 parts bamboo extract, 12 parts soybean residue powder, 6 parts sweet potato residue powder, 5 parts pine sawdust, 35 parts bentonite, 6 parts diatomaceous earth, 6 parts volcanic rock particles, 5 parts perlite powder, 0.7 parts anthocyanin, and 5 parts binder.

[0102] In this embodiment, preferably, the adhesive includes guar gum, locust gum, and sodium carboxymethyl starch.

[0103] A method for preparing cat litter, comprising the following steps:

[0104] S1. Raw material preparation: Prepare the following raw materials by weight: 45 parts bamboo extract, 12 parts soybean residue powder, 6 parts sweet potato residue powder, 5 parts pine sawdust, 35 parts bentonite, 6 parts diatomaceous earth, 6 parts volcanic rock granules, 5 parts perlite powder, 0.7 parts anthocyanin, and 5 parts binder.

[0105] S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder;

[0106] S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder;

[0107] S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution;

[0108] S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste.

[0109] S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules;

[0110] S7. Drying: The mixed particles are dried and then cooled to obtain the finished cat litter.

[0111] In this embodiment, preferably, the preparation method of the bamboo extract includes:

[0112] S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products;

[0113] S102. The pulverized bamboo material is soaked in NaOH solution for 2 hours. After soaking, acid solution is added to adjust the pH value to obtain a bamboo aqueous solution with a pH value of 5.8.

[0114] S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

[0115] In this embodiment, preferably, the method for preparing the soybean residue powder includes:

[0116] S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it.

[0117] S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder.

[0118] S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

[0119] In this embodiment, preferably, in step S203, the drying temperature of the dryer is 130°C, the drying time is 40 minutes, and the moisture content of the soybean residue powder is 7%; in step S202, the pulverized soybean residue is passed through a 75-mesh sieve.

[0120] In this embodiment, preferably, the sweet potato residue powder is prepared using the same method as the soybean residue powder.

[0121] In this embodiment, preferably, the cat litter has a particle diameter of 3.5 mm and a length of 0.5 cm.

[0122] Principles and advantages of this invention:

[0123] This invention incorporates bamboo extract, making the raw materials green and healthy, and increasing safety. The addition of soybean residue powder, sweet potato residue powder, and pine sawdust not only reduces material costs but also increases softness and absorbency. It can be directly buried in the ground as soil fertilizer, making it environmentally friendly, biodegradable, safe, and pollution-free. The raw materials are renewable, thus increasing resource utilization. The cat litter in this invention is made by mixing anthocyanins with other raw materials in a specific ratio, granulating, and drying. By adding anthocyanins, the color change of anthocyanins in the pet's excrement, depending on its pH level, indicates the pet's health. For example, if the pet has eaten too much meat, the excrement will be acidic, and the anthocyanin color will turn red; if the pet has eaten too many vegetables, the excrement will be alkaline, and the anthocyanin color will turn green, and in severe cases, yellow. Normal anthocyanins do not change color and can react with pH levels. The pH of cat excrement is monitored in real time to understand the cat's health status. Anthocyanins are first mixed with pine sawdust and other materials, then incorporated into bentonite, diatomaceous earth, volcanic rock granules, and perlite powder. The volcanic rock granules, in particular, have fine pores; the anthocyanin mixture with pine sawdust fills these pores, effectively protecting the anthocyanins from the effects of acids and alkalis in the air and extending their lifespan. The addition of diatomaceous earth enhances the cat litter's odor absorption capacity, effectively improving its deodorizing performance. Furthermore, the addition of volcanic rock granules, with their resistance to mold, inhibits mold growth in humid environments, exhibiting high antibacterial properties. Additionally, the volcanic rock granules provide excellent thermal insulation, further improving the overall quality of the cat litter.

[0124] The following experiments were conducted using cat litter produced using traditional methods and cat litter produced using the methods described in this invention. The experimental details and results are shown in the table below.

[0125]

[0126] Through various experiments, it can be found that the cat litter prepared in Examples 1, 2, 3 and 4 has improved water absorption, deodorization, antibacterial properties and heat insulation properties, and Example 3 is the best example.

[0127] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of cat litter, characterized in that: It is composed of the following raw materials in parts by weight: 40-60 parts bamboo extract, 10-20 parts soybean residue powder, 5-10 parts sweet potato residue powder, 4-8 parts pine sawdust, 30-50 parts bentonite, 5-8 parts diatomaceous earth, 5-8 parts volcanic rock particles, 4-6 parts perlite powder, 0.5-1.5 parts anthocyanin, and 4-6 parts binder; The method for preparing the cat litter includes the following steps: S1. Raw material preparation: Prepare the raw materials according to the stated weight parts; S2. Preliminary mixing of raw materials: Mix bamboo extract, soybean residue powder, sweet potato residue powder, and pine sawdust evenly to obtain the first mixed powder; S3. Grinding: Bentonite, diatomaceous earth, volcanic rock particles and perlite powder are put into a ball mill for grinding and mixing to obtain a second mixed powder; S4. Solution preparation: Mix anthocyanins with water until homogeneous to form a solution; S5. Secondary mixing: The first mixed powder and the mixed liquid are thoroughly mixed first, and a binder is added at the same time. Then the second mixed powder is added and thoroughly mixed, and a binder is added to obtain a paste. S6. Granulation: The paste is fed into a granulator for granulation to form mixed granules; S7. Drying: The mixed granules are dried and then cooled to obtain the finished cat litter; The fibrous structure of pine sawdust plant material preferentially adsorbs and protects anthocyanins, and then mixes it with volcanic rock particles with a porous structure. The above preparation method is used to coat and protect anthocyanins, thereby prolonging their color development persistence and stability and preventing them from prematurely degrading in the air. The adhesive includes guar gum, acacia gum, and sodium carboxymethyl starch.

2. The cat litter according to claim 1, characterized in that: The raw materials consist of the following parts by weight: 50 parts bamboo extract, 15 parts soybean residue powder, 8 parts sweet potato residue powder, 6 parts pine sawdust, 40 parts bentonite, 7 parts diatomaceous earth, 7 parts volcanic rock particles, 5 parts perlite powder, 1 part anthocyanin, and 5 parts binder.

3. The method for preparing cat litter according to claim 1, characterized in that: The method for preparing the bamboo extract includes: S101. Take bamboo branches, clean them, dry them, and then crush them using a pulverizer to obtain crushed bamboo products; S102. Soak the pulverized bamboo material in NaOH solution for 1-3 hours. After soaking, add acid solution to adjust the pH value to obtain a bamboo aqueous solution. The pH value of the bamboo-based aqueous solution is 5.6-6.6; S103. Ethyl acetate and diethyl ether are added to the bamboo aqueous solution, and the bamboo extract is obtained by distillation.

4. The cat litter according to claim 1, characterized in that: The method for preparing the soybean residue powder includes: S201. Take the soybean residue and wash it with water several times. Place the washed soybean residue in a dryer to dry it. S202. Place the dried soybean residue in a pulverizing device and pulverize it. Then sieve the pulverized soybean residue to obtain primary soybean residue powder. S203. Add an appropriate amount of distilled water to the primary soybean residue powder to moisten it, then adjust the pH value, and send the primary soybean residue powder with adjusted pH value into a dryer to dry it again to obtain the finished soybean residue powder.

5. The cat litter according to claim 4, characterized in that: In S203, the drying temperature of the dryer is 120℃-160℃, the drying time is 30-60min, and the moisture content of the soybean residue powder is 6-10%. The crushed soybean residue in S202 is passed through a 70-90 mesh sieve.

6. The cat litter according to claim 5, characterized in that: The sweet potato residue powder is prepared using the same method as the soybean residue powder.

7. The cat litter according to claim 1, characterized in that: The cat litter has a particle diameter of 3-5mm and a length of 0.4-1.2cm.

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