Cat litter and method of making same

Abstract

This application provides a cat litter and its preparation method. The cat litter, by weight, comprises the following components: 100 parts plant fiber waste, 1-7 parts antibacterial agent, 1-34 parts deodorizing agent, 1-27 parts absorbent, 1-47 parts binder, 1-94 parts water-absorbing agent, and 20-80 parts water. The antibacterial agent includes mesoporous solid alkali. This cat litter has a good antibacterial effect, which is beneficial to the healthy growth of pets.

Description

Technical Field

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

[0002] Cat litter is a type of substance used to clean up pet excrement. It quickly absorbs urine, feces, and odors, keeping the living environment clean and fresh. However, if cat litter isn't changed regularly, bacteria can easily grow, which is detrimental to the pet's health.

[0003] To address the problem of bacteria growth in cat litter caused by prolonged periods without changing it, antibacterial agents are typically added to the raw materials used in cat litter production to inhibit bacterial growth. However, current cat litter antibacterial effects are still not ideal, negatively impacting pets' health. Summary of the Invention

[0004] To address the aforementioned technical issues, this application provides a cat litter and its preparation method, which has a good antibacterial effect and is beneficial to the healthy growth of pets.

[0005] To solve the above-mentioned technical problems, this application provides a cat litter, which, according to parts by weight, comprises the following components:

[0006] 100 portions of plant fiber waste;

[0007] An antibacterial agent, 1 to 7 parts, wherein the antibacterial agent comprises a mesoporous solid alkali;

[0008] Odor remover, 1 to 34 parts;

[0009] Adsorbent, 1 to 27 parts;

[0010] Adhesive, 1 part to 47 parts;

[0011] Water absorbent, 1 part to 94 parts;

[0012] Water, 20 to 80 parts.

[0013] In the technical solution of this application, by rationally selecting the components and their contents, the cat litter achieves a better antibacterial effect, which is beneficial to the healthy growth of pets. The recycling of plant fiber waste not only reduces the production cost of the cat litter but also contributes to environmental protection. Furthermore, the mesoporous solid alkali included in the antibacterial agent has a large specific surface area and pore volume, resulting in a better antibacterial effect.

[0014] In some embodiments of this application, the components, calculated by mass parts, include the following:

[0015] The antibacterial agent is 2 to 6 parts;

[0016] And / or, the deodorizing agent is 3 to 30 parts;

[0017] And / or, the adsorbent is 2 to 25 parts;

[0018] And / or, the adhesive is 5 to 40 parts;

[0019] And / or, the absorbent is 3 to 85 parts;

[0020] And / or, the water is 26 to 60 parts.

[0021] In some embodiments of this application, the cat litter further includes the following components, calculated by weight:

[0022] A fabric softener, wherein the fabric softener comprises 1 to 18 parts by weight relative to 100 parts by weight of the plant fiber waste.

[0023] In some embodiments of this application, the cat litter further includes the following components, calculated by weight:

[0024] The air freshener is present in a concentration of 1 to 13 parts by weight relative to 100 parts by weight of the plant fiber waste.

[0025] In some embodiments of this application, the components, calculated by mass parts, include the following:

[0026] The antibacterial agent is 3 to 6 parts;

[0027] And / or, the deodorizing agent is 6 to 12 parts;

[0028] And / or, the adsorbent is 3 to 4 parts;

[0029] And / or, the adhesive is 11 to 17 parts;

[0030] And / or, the absorbent is 5 to 9 parts;

[0031] And / or, the water is 41 to 56 parts;

[0032] And / or, the fiber softener is 2 to 6 parts;

[0033] And / or, the air freshener is 4 to 9 parts.

[0034] In some embodiments of this application, the fabric softener is selected from at least one of fatty acid compounds, fatty acid ester compounds, glycerol compounds, amide compounds, and silicone oil compounds;

[0035] And / or, the air freshener is selected from apple wood fiber.

[0036] In some embodiments of this application, the mesoporous solid alkali is selected from metal oxides and / or metal hydroxides.

[0037] In some embodiments of this application, the metal oxide is selected from alkali metal oxides and / or alkaline earth metal oxides;

[0038] The metal hydroxide is selected from alkali metal hydroxides and / or alkaline earth metal hydroxides.

[0039] In some embodiments of this application, the plant fiber waste is selected from at least one of sugarcane bagasse fiber, bamboo fiber, giant reed fiber, straw fiber, dragon's beard grass fiber, and bamboo shoot shell fiber;

[0040] And / or, the antibacterial agent further includes at least one of nano-oxides, solid chlorine oxides, sorbic acid, and sorbate;

[0041] And / or, the deodorizing agent is selected from at least one of clay, resin, plant essential oil and diatomite;

[0042] And / or, the adsorbent is selected from at least one of activated carbon, a mixture of water and sodium calcium aluminosilicate, diatomaceous earth, esterified glucomannan and cholestyramine;

[0043] And / or, the binder is selected from at least one of whey protein, sodium alginate, corn protein, sodium bentonite, carboxymethyl cellulose, sodium polyacrylate, pregelatinized starch and gelatin;

[0044] And / or, the absorbent is selected from at least one of acrylate polymers, acrylonitrile copolymers, proteins, thermosetting resins, and barrier resins.

[0045] In some embodiments of this application, the nano-oxide is selected from at least one of nano-zinc oxide particles, nano-titanium dioxide particles, and nano-cerium dioxide particles;

[0046] The sorbate is selected from at least one of sodium sorbate and potassium sorbate;

[0047] The solid chlorine oxide is selected from chlorine dioxide;

[0048] The clay is a modified clay, which is selected from attapulgite and / or nano-montmorillonite modified with amide compounds.

[0049] This application also provides a method for preparing cat litter as described in any of the above embodiments, comprising the following steps:

[0050] After mixing plant fiber waste, water, and some antibacterial agents, deodorizers, adsorbents, binders, and water-absorbing agents evenly, a first mixture is obtained.

[0051] The mixture is granulated to obtain the first particles;

[0052] The remaining antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent are mixed to form a second mixture, and the second mixture is used to coat the first particles to obtain the second particles;

[0053] The second particle is sieved and dried to obtain the cat litter.

[0054] In some embodiments of this application, the compression ratio of the granulation is from 0.5 to 2.5. Attached Figure Description

[0055] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0056] Figure 1 This is a schematic flowchart illustrating a method for preparing cat litter according to some embodiments of this application.

[0057] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0058] The various embodiments or implementation schemes in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments.

[0059] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having” and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusion.

[0060] In the description of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "exemplary," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an implementation or example that are included in at least one implementation or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0062] This application provides a cat litter, which, by weight, comprises the following components: plant fiber waste, antibacterial agent, deodorizing agent, adsorbent, binder, water-absorbing agent, and water. Specifically, the components are: 100 parts plant fiber waste, 1 to 7 parts antibacterial agent, 1 to 34 parts deodorizing agent, 1 to 27 parts adsorbent, 1 to 47 parts binder, 1 to 94 parts water-absorbing agent, and 20 to 80 parts water.

[0063] In the technical solution of this application, by rationally selecting the components and their contents, the cat litter achieves a better antibacterial effect, which is beneficial to the healthy growth of pets. Plant fiber waste is readily available, and after recycling, it not only reduces the production cost of the cat litter but also contributes to environmental protection. Furthermore, the mesoporous solid alkali included in the antibacterial agent has a large specific surface area and pore volume, resulting in a better antibacterial effect.

[0064] In the embodiments of this application, plant fiber waste is readily available, thereby reducing the difficulty of cat litter preparation. Recycling waste plant fibers reduces the production cost of cat litter and is also environmentally friendly.

[0065] In the embodiments described below, unless otherwise stated, the mass parts of the components contained in the cat litter are all relative to 100 parts by mass of plant fiber waste.

[0066] Plant fiber waste

[0067] Plant fiber waste plays a supporting role in the cat litter granulation process. In some embodiments of this application, the plant fiber waste can be selected from at least one of sugarcane bagasse fiber, bamboo fiber, giant reed fiber, straw fiber, dragon's beard grass fiber, and bamboo shoot husk fiber. These plant fiber wastes are readily available, have high fiber content, and good water absorption, which allows them to not only provide good support during use but also further improve the water absorption of the cat litter.

[0068] antibacterial agent

[0069] Antibacterial agents can quickly kill bacteria, fungi, and other microorganisms, making it less likely for bacteria to grow in cat litter during use. In the embodiments of this application, the antibacterial agent includes a mesoporous solid alkali, wherein mesoporous refers to pores with a pore size ranging from 2 nm to 50 nm. Based on mesoporous solid alkali, it can act as a catalyst, which has the advantages of high activity and mild reaction conditions. It can then quickly adsorb oxygen and water vapor in the air onto the surface of the mesoporous solid alkali. Through its own catalytic properties, it catalyzes oxygen and water vapor to generate oxidizing particles such as hydroxyl radicals, oxygen radicals, and peroxy radicals. The oxidation rate of these oxidizing particles is several orders of magnitude higher than that of ozone, thereby rapidly killing bacteria, fungi, and other microorganisms.

[0070] In some embodiments of this application, the mesoporous solid alkali may be selected from metal oxides and / or metal hydroxides. Further, the metal may be an alkali metal or an alkaline earth metal.

[0071] For example, the mesoporous solid alkali may be at least one of silicon dioxide, zirconium oxide, aluminum oxide, magnesium hydroxide, calcium oxide, strontium oxide, barium oxide, and hydrotalcite.

[0072] In some embodiments of this application, the antibacterial agent may include, in addition to mesoporous solid alkali, at least one of nano-oxide, solid chlorine oxide, sorbic acid and sorbate.

[0073] For example, the nano-oxide is selected from at least one of nano-zinc oxide particles, nano-titanium dioxide particles, and nano-cerium dioxide particles. The sorbate is selected from at least one of sodium sorbate and potassium sorbate. The solid chlorine oxide is selected from chlorine dioxide.

[0074] Deodorizer

[0075] Odor removers can remove ammonia and ammonium ions from pet excrement, thereby improving air quality and preventing odors in the pet's living environment, reducing the incidence of respiratory diseases, and promoting healthy growth. Furthermore, odor removers also have other benefits, such as soothing and stopping bleeding, preventing a drop in body temperature caused by a damp environment, and reducing the incidence of diarrhea and other diseases.

[0076] In some embodiments of this application, the deodorizing agent is selected from at least one of clay, resin, plant essential oil and diatomite.

[0077] In the above embodiments, the clay may be modified clay, which may be selected from attapulgite and / or nano-montmorillonite modified with amide compounds.

[0078] In some alternative embodiments of this application, the modified clay is attapulgite modified with amide compounds.

[0079] Specifically, amide compounds can be polyacrylamide, which is a linear water-soluble polymeric flocculant. Its molecular chain has the same number of amide groups as acrylamide units, and the amide groups have high polarity, are easy to form hydrogen bonds and have high reactivity.

[0080] Attapulgite is a magnesium-aluminate silicate clay mineral with a fibrous or chain-like structure. Its crystal structure contains a series of crystal channels and has a large specific surface area, giving it a strong physical adsorption capacity. In addition, due to the presence of crystal defects and vacancies in its crystal structure, the surface of attapulgite carries a negative charge, thereby exhibiting a strong ion exchange adsorption capacity.

[0081] In addition, the surface of attapulgite contains a large number of silanol groups, which have a strong affinity for organic matter. Through grafting reactions, organic-inorganic composite materials with certain specific groups can be generated, thereby giving attapulgite new properties.

[0082] In some embodiments of this application, acrylamide can be grafted onto the surface of silanized attapulgite to form a polyacrylamide / attapulgite composite material. This composite material contains a large number of amide groups on its surface, exhibiting a strong adsorption capacity for harmful heavy metal ions and ammonium ions. Furthermore, attapulgite itself possesses a strong adsorption capacity, enabling it to adsorb harmful gases from the environment to improve air quality and prevent odor buildup in the pet's living environment, thereby reducing the incidence of respiratory diseases in pets and promoting their healthy growth.

[0083] In the above embodiments, the preparation method of the polyacrylamide / attapulgite composite material is as follows:

[0084] (1) Add 100 mL of toluene, 1 mL of water and 3.0 g of attapulgite (dried at 105 °C for 2 h) to a three-necked flask in sequence, and then add 3 mL of γ-(methacryloyloxy)propyltrimethoxysilane (KH-570) while stirring, and sonicate at 40 °C to 45 °C for 40 min.

[0085] (2) Under stirring conditions, the reaction was carried out at a constant temperature of 45℃ to 50℃ for 4 hours. The resulting reaction product was separated by filtration and washed with toluene, anhydrous ethanol and deionized water in sequence to remove excess KH-570. It was dried at 105℃ to obtain silanized attapulgite. After grinding and sieving, it was used for later use. The sieving was carried out using 200 mesh.

[0086] (3) Add 100 mL of toluene and 2.0 g of silanized attapulgite to a three-necked flask in sequence, and then add a certain mass of acrylamide and azobisisobutyronitrile (AIBN) in sequence. React for several hours under nitrogen protection and at a certain temperature.

[0087] (4) After the reaction is completed, the product is filtered and separated and then washed with toluene, anhydrous ethanol and deionized water in sequence to remove excess polyacrylamide, thus obtaining polyacrylamide / attapulgite composite material. The composite material is dried at 105°C, ground and sieved for later use. The sieving is performed using 200 mesh.

[0088] In some other embodiments of this application, the deodorizing agent may be a superabsorbent polymer (SAP) containing hydrophilic functional groups such as carboxyl groups, sulfonic acid groups, hydroxyl groups, and amide groups. This SAP can absorb tens to thousands of times its own weight in water and swells upon contact with water or an aqueous solution to form a hydrogel. This hydrogel can absorb ammonia gas, thus exhibiting a significant deodorizing effect. For example, the SAP may be polyacrylic acid. Zeolite powder may also be used as the deodorizing agent.

[0089] Adsorbent

[0090] Adsorbents are used to remove highly toxic, teratogenic, and carcinogenic metabolites produced by fungi or molds. Mycotoxins, in particular, can cause stunted growth, weakened immunity, and organ dysfunction in pets.

[0091] In some embodiments of this application, the adsorbent is selected from at least one of activated carbon, a mixture of water and sodium calcium aluminosilicate, diatomaceous earth, esterified glucomannan, and cholestyramine.

[0092] adhesive

[0093] The binder enables the components to bind together to form granular material during the cat litter granulation process. In some embodiments of this application, the binder is selected from at least one of whey protein, sodium alginate, corn protein, sodium bentonite, carboxymethyl cellulose, sodium polyacrylate, pregelatinized starch, and gelatin.

[0094] absorbent

[0095] Desiccant has excellent water absorption properties and the ability to retain moisture. In some embodiments of this application, the desiccant is selected from at least one of acrylate polymers, acrylonitrile copolymers, proteins, thermosetting resins, and barrier resins.

[0096] For example, the acrylate polymer may be polyacrylate or starch acrylate polymer; the acrylonitrile copolymer may be starch-acrylonitrile graft copolymer or acrylamide-acrylonitrile-acrylic acid terpolymer; the protein may be casein; the thermosetting resin may be polyamide epichlorohydrin; and the barrier resin may be polyvinyl alcohol.

[0097] In some embodiments of this application, the components, calculated by weight, include the following: 2 to 6 parts of antibacterial agent; and / or 3 to 30 parts of deodorizing agent; and / or 2 to 25 parts of adsorbent; and / or 5 to 40 parts of binder; and / or 3 to 85 parts of water absorbent; and / or 26 to 60 parts of water.

[0098] In these embodiments, the content of each component is further optimized to give the cat litter a better antibacterial effect, which is beneficial to the healthy growth of pets.

[0099] In some embodiments of this application, the cat litter further includes the following components, calculated by weight: a fabric softener, wherein the content of the fabric softener relative to 100 parts by weight of plant fiber waste is from 1 part by weight to 18 parts by weight.

[0100] In the above embodiments, the fiber softener can improve the softness of the cat litter, so as to achieve the purpose of making the cat litter soft and comfortable to the touch.

[0101] In some embodiments of this application, the fabric softener is selected from at least one of fatty acid compounds, fatty acid ester compounds, glycerol compounds, amide compounds, and silicone oil compounds;

[0102] For example, the fabric softener may be one or more of the following: glyceryl monostearate and glyceryl distearate, stearic acid, oleamide, glycerin, trialkyl phosphate, amino silicone oil, and pentaerythritol stearate.

[0103] In some embodiments of this application, the cat litter further includes the following components, calculated by weight: a freshener, wherein the freshener is present in a content of 1 to 13 parts by weight relative to 100 parts by weight of plant fiber waste.

[0104] In these embodiments, the air freshener can absorb odors from pet excrement, further improving air quality in the living environment to promote the healthy growth of pets.

[0105] In some embodiments of this application, the air freshener is selected from applewood fiber. This applewood fiber has a slightly sweet aroma during processing; it is a natural, non-irritating, environmentally friendly, and dust-free fruitwood.

[0106] In some embodiments of this application, the components, calculated by weight, include the following: 3 to 6 parts of antibacterial agent; and / or 6 to 12 parts of deodorizing agent; and / or 3 to 4 parts of adsorbent; and / or 11 to 17 parts of binder; and / or 5 to 9 parts of water-absorbing agent; and / or 41 to 56 parts of water; and / or 2 to 6 parts of fabric softener; and / or 4 to 9 parts of air freshener.

[0107] In these embodiments, the content of each component is further optimized so that the cat litter not only has better antibacterial and deodorizing effects, but also improves the softness of the cat litter, which is more conducive to the healthy growth of pets.

[0108] This application also provides a method for preparing cat litter as described in any of the above embodiments, comprising the following steps:

[0109] S10: After mixing plant fiber waste, water, and some antibacterial agents, deodorizers, adsorbents, binders, and water-absorbing agents evenly, a first mixture is obtained;

[0110] S20: Granulate the above mixture to obtain the first particles;

[0111] S30: The remaining antibacterial agent, deodorizing agent, adsorbent, binder and water-absorbing agent are mixed to form a second mixture, and the second mixture is used to coat the first particle to obtain the second particle;

[0112] S40: The second particle is sieved and dried to obtain cat litter.

[0113] In the technical solution of this application, the components of cat litter are easy to obtain, the preparation is easy, and the preparation cost is also low.

[0114] In some embodiments of this application, S10 includes the following steps:

[0115] S11: Plant fiber waste is sorted and dried sequentially to obtain the desired cat litter components;

[0116] S12: Spray water evenly onto the dried plant fiber waste and mix it.

[0117] S13: Add a portion of the binder, antibacterial agent, deodorizer, and adsorbent to the mixture obtained in S12, and stir for 5 to 10 minutes;

[0118] S14: Add some of the absorbent to the mixture obtained in S13 and stir for 3 to 5 minutes.

[0119] In some embodiments of this application, S20 includes the following steps:

[0120] S21: The mixture obtained in S14 is slowly added to the mold of the pellet mill, and the first pellets are obtained after extrusion.

[0121] In some embodiments of this application, the compression ratio of the mold is between 0.5 and 2.5. A compression ratio within this range can improve the looseness, shape retention, and integrity of the first granules, and also achieve a balance between shape retention and integrity. High looseness not only gives the cat litter a better feel and absorbency, but also allows each granule to absorb water faster and more fully, thereby saving litter usage and preventing cat urine leakage. High shape retention and integrity result in lower content of broken particles and dust in the cat litter.

[0122] In some embodiments of this application, S30 includes the following steps:

[0123] S31: Under stirring conditions, add the remaining antibacterial agent, deodorizing agent, adsorbent, binder and water-absorbing agent to the first particle until the coating is completed, and continue stirring for 3 to 5 minutes to obtain the second particle.

[0124] In some embodiments of this application, S40 includes the following steps:

[0125] S41: The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is then transferred to a drying device for drying. The drying temperature is 65℃ to 75℃, the drying time is 15 min to 25 min, and the particle moisture content is controlled at 12% to 18% to obtain cat litter.

[0126] In some embodiments of this application, the method for preparing cat litter includes the following steps:

[0127] (1) The plant fiber waste and the air freshener are sorted and dried, and then the plant fiber waste and the air freshener are mixed evenly to obtain mixed fibers;

[0128] (2) Add the fiber softener evenly to the mixture obtained in (1), stir for 5 to 10 minutes, and then let it stand for 20 to 30 minutes;

[0129] (3) Spray water evenly onto the mixed fibers obtained in step (2) and stir until the mixture is uniform;

[0130] (4) Add a portion of the antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent to the mixture obtained in step (3) and stir for 5 to 10 minutes;

[0131] (5) Add some of the absorbent to the mixture obtained in step (4) and stir for 3 to 5 minutes;

[0132] (6) Slowly add the mixture obtained in step (5) into the mold of the pellet manufacturing machine, adjust the mold compression ratio to 0.5 to 2.5, and extrude to obtain the first pellet;

[0133] (7) Heat water to 50°C to 60°C, and under stirring conditions, add 2% pregelatinized starch to the water to obtain a pregelatinized starch solution. The stirring speed is 600 r / min to 1400 r / min and the stirring time is 5 min to 10 min.

[0134] (8) Add the first particle to the coating machine, and under stirring conditions, add the pregelatinized starch solution in (7). After the addition is completed, add the remaining antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent to the coating machine to coat the second particle, and continue stirring for 3 to 5 minutes to obtain the second particle.

[0135] (9) The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is then transferred to a drying device for drying. The drying temperature is 65℃ to 75℃, the drying time is 15min to 25min, and the particle moisture content is controlled at 12% to 18% to obtain cat litter.

[0136] The following detailed description of the cat litter and its preparation method according to specific embodiments is provided.

[0137] Example 1

[0138] This embodiment provides a method for preparing cat litter, including the following steps:

[0139] (1) The plant fiber waste is sorted and dried in sequence to obtain the required cat litter components;

[0140] (2) Spray water evenly onto the dried plant fiber waste and stir to mix;

[0141] (3) Add 1.5 parts of adhesive, 0.3 parts of antibacterial agent, 0.5 parts of deodorizing agent and 0.8 parts of adsorbent to the mixture obtained in step (2) and stir for 5 minutes;

[0142] (4) Add 1 part of the absorbent to the mixture obtained in step (3) and stir for 3 minutes;

[0143] (5) The mixture obtained in step (4) is slowly added to the mold of the pellet manufacturing machine and extruded to obtain the first pellet, wherein the compression ratio of the mold is 2.5;

[0144] (6) Add the first particle to the coating machine. Under stirring conditions, add the remaining antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent to the coating machine to coat the second particle. Continue stirring for 3 minutes to obtain the second particle.

[0145] (7) The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is transferred to a drying device for drying. The drying temperature is 65℃ and the drying time is 15min. The moisture content of the particles is controlled at 18% to obtain cat litter.

[0146] Example 2

[0147] This embodiment provides a method for preparing cat litter, including the following steps:

[0148] (1) The plant fiber waste and the air freshener are sorted and dried, and then the plant fiber waste and the air freshener are mixed evenly;

[0149] (2) Add the fiber softener evenly to the mixture obtained in (1), stir for 8 minutes, and then let it stand for 25 minutes;

[0150] (3) Spray water evenly into the mixture obtained in step (2) and stir until the mixture is evenly mixed;

[0151] (4) Add 4 parts of adhesive, 1 part of antibacterial agent, 2.5 parts of deodorizing agent and 1.5 parts of adsorbent to the mixture obtained in step (3) and stir for 8 minutes;

[0152] (5) Add 2 parts of the absorbent to the mixture obtained in step (4) and stir for 4 minutes;

[0153] (6) The mixture obtained in step (5) is slowly added to the mold of the pellet manufacturing machine and extruded to obtain the first pellet, wherein the mold compression ratio is 1.5;

[0154] (7) Heat water to 65°C, and under stirring conditions, add 2% pregelatinized starch to the water to obtain a pregelatinized starch solution. The stirring speed is 900 r / min and the stirring time is 7 min.

[0155] (8) Add the first particle to the coating machine, and under stirring conditions, add the pregelatinized starch solution in (7). After the addition is completed, add the remaining antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent to the coating machine to coat the second particle, and continue stirring for 4 minutes to obtain the second particle.

[0156] (9) The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is transferred to a drying equipment for drying treatment. The drying temperature is 70℃ and the drying time is 20min. The moisture content of the particles is controlled at 15% to obtain cat litter.

[0157] Example 3

[0158] This embodiment provides a method for preparing cat litter, including the following steps:

[0159] (1) The plant fiber waste and the air freshener are sorted and dried, and then the plant fiber waste and the air freshener are mixed evenly;

[0160] (2) Add the fiber softener evenly to the mixture obtained in (1), stir for 10 minutes, and then let it stand for 30 minutes;

[0161] (3) Spray water evenly into the mixture obtained in step (2) and stir until the mixture is evenly mixed;

[0162] (4) Add 8 parts of adhesive, 3 parts of antibacterial agent, 4.5 parts of deodorizing agent and 2 parts of adsorbent to the mixture obtained in step (3) and stir for 10 minutes;

[0163] (5) Add 4.5 parts of the absorbent to the mixture obtained in step (4) and stir for 5 minutes;

[0164] (6) The mixture obtained in step (5) is slowly added to the mold of the pellet manufacturing machine and extruded to obtain the first pellet, wherein the mold compression ratio is 0.5;

[0165] (7) Heat water to 60°C, and under stirring conditions, add 2% pregelatinized starch to the water to obtain a pregelatinized starch solution. The stirring speed is 1400 r / min and the stirring time is 10 min.

[0166] (8) Add the first particle to the coating machine, and under stirring conditions, add the pregelatinized starch solution in (7). After the addition is completed, add the remaining antibacterial agent, deodorizing agent, adsorbent, binder and water absorbent to the coating machine to coat the second particle, and continue stirring for 5 minutes to obtain the second particle.

[0167] (9) The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is then transferred to a drying device for drying. The drying temperature is 75℃ and the drying time is 25min. The moisture content of the particles is controlled at 12% to obtain cat litter.

[0168] Comparative Example 1

[0169] This embodiment provides a method for preparing cat litter, including the following steps:

[0170] (1) Sorting and drying plant fiber waste;

[0171] (2) Add the fiber softener evenly to the plant fiber waste obtained in (1), stir for 5 minutes, and then let it stand for 20 minutes;

[0172] (3) Spray water evenly into the mixture obtained in (2) and stir until the mixture is uniform;

[0173] (4) Add 0.2 parts of antibacterial agent, 8 parts of adhesive and 4.5 parts of water absorbent to the mixture obtained in step (3) and stir for 5 minutes;

[0174] (5) The mixture obtained in step (4) is slowly added to the mold of the pellet manufacturing machine and extruded to obtain the first pellet, wherein the mold compression ratio is 3.0;

[0175] (6) Heat water to 50°C, and then add 2% pregelatinized starch to the water under stirring to obtain a pregelatinized starch solution. The stirring speed is 600 r / min and the stirring time is 5 min.

[0176] (7) Add the first particle to the coating machine, and under stirring conditions, add the pregelatinized starch solution in (6). After the addition is completed, add the remaining antibacterial agent, binder and absorbent to the coating machine to coat the second particle, and continue stirring for 3 minutes to obtain the second particle.

[0177] (8) The second particle is sieved through a 40-mesh filter screen. The second particle on the filter screen is transferred to a drying equipment for drying treatment. The drying temperature is 65℃ and the drying time is 15min. The moisture content of the particles is controlled at 18% to obtain cat litter.

[0178] The weights of each component in the cat litter of Examples 1-3 and Comparative Example 1 are shown in Table 1.

[0179] Table 1

[0180]

[0181]

[0182] Test case

[0183] The performance of the cat litter in Examples 1 to 3 and Comparative Example 1 was tested, and the test results are shown in Table 2. The specific performance tests are as follows:

[0184] Agglomeration strength

[0185] The sample absorbs water and condenses to form an agglomerated sample. The agglomerated sample is allowed to fall freely from a certain height, and its breaking state is observed to determine its agglomeration strength. When the agglomeration strength is greater than or equal to 75%, it is considered qualified.

[0186] Test procedure: Randomly select an agglomerated sample, weigh the agglomerated weight m1 (the agglomerated weight refers to the weight of the sample after absorbing water and condensing into a ball), and then freely drop it from a height of 50 cm onto a marble or other inelastic tabletop. Pick up the largest piece of cat litter agglomerate and weigh it as m2. The calculation formula for the agglomeration strength is as follows:

[0187] Q = m1 / m2 × 100%

[0188] In the formula:

[0189] Q - agglomeration strength, unit: %;

[0190] [[ID=!15]]m1 - agglomerated weight, unit: g;

[0191] m2 - agglomerated mass, unit: g. [[ID=2!0]]

[0192] Water absorption rate

[0193] When the water absorption rate is greater than or equal to 66%, it is considered qualified. The instruments used for the water absorption rate should be as follows:

[0194] a) Analytical balance, sensitivity specification: 0.01 g;

[0195] b) Acid burette, specification: 25 mL;

[0196] c) Pipette, specification: 20 mL.

[0197] Test procedure: Spread 20 g of cat litter evenly in the sample basin, with a thickness of about 8 cm to 10 cm. Use a pipette to suck 20 mL of 1% sodium chloride solution at a temperature of 36°C to 40°C and transfer it to the acid burette. Adjust the distance between the acid burette and the sample plane to about 3 cm. Open the acid burette, and the solution should flow into the sample within 30 s. After all the solution has flowed out for 60 s, take out the agglomerated sample and weigh its mass m on an analytical balance with a sensitivity specification of 0.01 g. Do 3 groups of samples simultaneously in this way and calculate the average value. The calculation formula for the water absorption rate is as follows:

[0198] X = 20 / (m1 - 20) × 100%

[0199] In the formula:

[0200] X - water absorption rate, unit: %;

[0201] m1 - agglomerated weight, unit: g.

[0202] Ammonia concentration

[0203] It should be noted that there seems to be a small error in the original text where "m1" in the water absorption rate formula should probably be the mass of the sample after absorbing water and forming the agglomerate. Here, it is translated as "m1 - agglomerated weight" for consistency with the previous context, but it might need to be adjusted according to the actual correct concept. Also, "2!0" and "!15" in the translation are just to mark the possible incorrect parts in the original for reference.In a closed environment, use an ammonia gas detector to measure the residual ammonia gas concentration after a certain ammonia solution is absorbed. When the ammonia gas concentration is less than or equal to 20 mg / m 3 , it is considered qualified.

[0204] Test steps: Prepare an ammonia water odor source with a concentration of 5%. Keep it at a constant temperature of 23°C to 27°C. Place the test sample together with the sample cup in a square and sealed box. The length of the box is 30 cm, the width is 20 cm, and the height is 10 cm. Place an ammonia detector 10 cm away from the sample cup. Use a pipette to transfer 20 mL of the prepared odor source along the flow to the center point of the sample cup, seal the box, and read the value after 3 minutes, which is the ammonia gas concentration.

[0205] Contents of bacteria, molds, and aflatoxin

[0206] The content of coliform bacteria is determined according to GB / T 18869. When the content of coliform bacteria is less than or equal to 300 MPN / 100 g, it is considered qualified.

[0207] The content of Salmonella is determined according to GB / T 13091. The content of Salmonella.

[0208] The total content of molds is determined according to GB / T 13092. When the total content of molds is less than or equal to 4×10 4 CFU / g, it is considered qualified. [[ID=2))

[0209] The content of aflatoxin B1 is determined according to GB / T 17480. When the content of aflatoxin B1 is less than or equal to 20 μg / kg, it is considered qualified.

[0210] Table 2

[0211] Performance indicators Example 1 Example 2 Example 3 Comparative Example 1 Bulk density (%) 78 87 95 72 Water absorption rate (%) 72 120 200 68 <![CDATA[Ammonia concentration (mg / m 3 )]]> 20 3 3 35 Mold (CFU / g) 50 10 3 <![CDATA[5×10 4 ]]> Coliform bacteria (MPN / 100g) 30 15 5 350 Salmonella (abs / 25g) abs abs abs abs <![CDATA[Aflatoxin B1 (μg / kg)]]> 1.5 0.5 0.1 30

[0212] Note: abs / 25 g means that Salmonella is not detected (abs) in 25 g of the sample, which is considered qualified.

[0213] As can be seen from Table 2, the cat litter of the present application has excellent antibacterial effects, as well as good agglomeration strength, water absorption, and deodorization effects.

[0214] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A cat litter, characterized by, According to mass parts, the cat litter comprises the following components: Plant fiber waste, 100 parts; Bacteriostatic agent, 1 part to 7 parts, wherein the bacteriostatic agent comprises mesoporous solid base; the mesoporous solid base is selected from mesoporous metal oxide and / or mesoporous metal hydroxide, the mesoporous metal oxide is selected from mesoporous alkali metal oxide and / or mesoporous alkaline earth metal oxide; the mesoporous metal hydroxide is selected from mesoporous alkali metal hydroxide and / or mesoporous alkaline earth metal hydroxide; Deodorant, 1 part to 34 parts; Adsorbent, 1 part to 27 parts; Binder, 1 part to 47 parts; Water-absorbing agent, 1 part to 94 parts; Fiber softener, 1 part to 18 parts, the fiber softener is selected from at least one of fatty acid compound, fatty acid ester compound, glycerin compound, amide compound and silicone oil compound; Water, 20 parts to 80 parts.

2. The cat litter of claim 1, wherein, According to mass parts, the cat litter comprises the following components: The bacteriostatic agent is 2 parts to 6 parts; And / or, the deodorant is 3 parts to 30 parts; And / or, the adsorbent is 2 parts to 25 parts; And / or, the binder is 5 parts to 40 parts; And / or, the water-absorbing agent is 3 parts to 85 parts; And / or, the water is 26 parts to 60 parts.

3. The cat litter of claim 1, wherein, According to mass parts, the cat litter further comprises the following components: Freshener, the content of the freshener relative to 100 mass parts of the plant fiber waste is 1 mass part to 13 mass parts.

4. The cat litter of claim 3, wherein, According to mass parts, the cat litter comprises the following components: The bacteriostatic agent is 3 parts to 6 parts; And / or, the deodorant is 6 parts to 12 parts; And / or, the adsorbent is 3 parts to 4 parts; And / or, the binder is 11 parts to 17 parts; And / or, the water-absorbing agent is 5 parts to 9 parts; And / or, the water is 41 parts to 56 parts; And / or, the fiber softener is 2 parts to 6 parts; And / or, the freshener is 4 parts to 9 parts.

5. The cat litter according to claim 3 or 4, characterized in that, The freshener is selected from apple wood fiber.

6. The cat litter of claim 1, wherein, The plant fiber waste is selected from at least one of sugarcane residue fiber, bamboo fiber, giant fungus grass fiber, straw fiber, willow grass fiber and bamboo shoot shell fiber; And / or, the bacteriostatic agent further comprises at least one of nano oxide, solid chlor-oxide, sorbic acid and sorbate; And / or, the deodorant is selected from at least one of clay, resin, plant essential oil and halloysite; And / or, the adsorbent is selected from at least one of activated carbon, water and mixture of sodium calcium silico-aluminate, diatomite, esterified glucomannan and cholestyramine; And / or, the binder is selected from at least one of whey protein, sodium alginate, corn protein, sodium bentonite, carboxymethyl cellulose, sodium polyacrylate, pre-gelatinized starch and gelatin gum; And / or, the water-absorbing agent is selected from at least one of acrylic acid salt polymer, acrylonitrile copolymer, protein, thermosetting resin and barrier resin.

7. The cat litter of claim 6, wherein, The nano oxide is selected from at least one of nano zinc oxide particles, nano titanium dioxide particles and nano cerium dioxide particles; The sorbate is selected from at least one of sodium sorbate and potassium sorbate; The solid chlor-oxide is selected from chlorine dioxide. The clay is a modified clay selected from the group consisting of an amide compound modified palygorskite and / or nanometer montmorillonite.

8. A method of preparing the cat litter according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: mixing plant fiber waste, water, and part of the bacteriostatic agent, odor-removing agent, adsorbent, binder, and water-absorbing agent to obtain a first mixture; granulating the mixture to obtain first granules; mixing the remaining amount of bacteriostatic agent, odor-removing agent, adsorbent, binder, and water-absorbing agent to form a second mixture, and coating the first granules with the second mixture to obtain second granules; screening and drying the second granules to obtain the cat litter.

9. The preparation method according to claim 8, characterized in that, The compression ratio of the granulation is 0.5 to 2.5.

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