Preparation method of lithium slag-based cat litter

Abstract

The invention provides a lithium slag-based cat litter and a preparation method thereof. The preparation method of the lithium slag-based cat litter comprises the following steps: obtaining a lithium slag raw material; calcining the lithium slag raw material, and cooling to obtain modified lithium slag; carrying out wet ball milling on the modified lithium slag, a siliceous auxiliary material and an additive, sieving, and drying the undersize material to obtain a powder material; adding plant fiber powder into the powder, and uniformly mixing to obtain mixed powder; feeding the mixed powder into a disc granulator, spraying a first solution, and granulating through the granulator to obtain a blank body; and drying the blank body to obtain the lithium slag based cat litter. Wherein the lithium slag raw material comprises lepidolite slag or lepidolite; the first solution comprises a binder, a bactericide and deionized water. In the invention, the lithium slag is used as a raw material to prepare the lithium slag-based cat litter, so that large-amount doping of the lithium slag, namely high-added-value recycling, can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of lithium slag solid waste recycling, and in particular to a lithium slag-based cat litter and a preparation method thereof. Background Art

[0002] Lithium slag is an industrial waste that is inevitably produced during the production of lithium salts such as lithium carbonate by the sulfate process. According to research, the amount of spodumene lithium slag required to be discharged for every ton of lithium carbonate produced is between 10 and 60 tons. At present, the treatment of lithium slag mainly relies on open-air stacking or deep pit landfill, which not only causes a waste of resources, but also has a significant impact on the geological environment. Therefore, how to achieve the large-scale admixture of lithium slag and its high-value-added reuse has become a scientific and technological problem that needs to be solved urgently. Summary of the invention

[0003] The present application provides a method for preparing lithium slag-based cat litter which is beneficial for the reuse of lithium slag.

[0004] In a first aspect, an embodiment of the present application provides a method for preparing a lithium slag-based cat litter, the method comprising:

[0005] Obtaining lithium slag raw materials;

[0006] calcining the lithium slag raw material, and obtaining modified lithium slag after cooling;

[0007] The modified lithium slag, siliceous auxiliary materials and additives are wet ball-milled and then sieved, and the sieved materials are dried to obtain powder materials;

[0008] Adding plant fiber powder to the powder material, and mixing evenly to obtain a mixed powder material;

[0009] The mixed powder is fed into a disc granulator, sprayed with the first solution, and granulated by the granulator to obtain an embryo body;

[0010] Drying the embryo to obtain lithium slag-based cat litter;

[0011] Wherein, the lithium slag raw material includes spodumene slag or lepidolite; and the first solution includes a binder, a bactericide and deionized water.

[0012] According to the first aspect, in a possible implementation, when the lithium slag raw material is spodumene slag;

[0013] The step of calcining the lithium slag raw material and obtaining modified lithium slag after cooling comprises:

[0014] The spodumene slag and the modifier are uniformly mixed and calcined, and then cooled to obtain modified lithium slag;

[0015] The modifier includes one or more of potassium hydroxide, sodium hydroxide, potassium carbonate and sodium carbonate, and the addition amount of the modifier is 0.5%-10% of the mass of the spodumene slag.

[0016] According to the first aspect, in a possible implementation, the siliceous auxiliary material includes a first auxiliary material and a second auxiliary material, the first auxiliary material includes one or more of kaolin, diatomaceous earth and bentonite, and the second auxiliary material includes vermiculite and / or perlite; the additive includes calcium carbonate and / or calcium hydroxide.

[0017] According to the first aspect, in a possible implementation, the mass ratio of each substance in the powder material is as follows: lithium slag raw material: first auxiliary material: second auxiliary material: modifier = (70-85): (5-15): (0-10): (1-5).

[0018] According to the first aspect, in a possible implementation, the plant fiber powder includes one or more of tofu residue powder, sweet potato residue powder, bagasse powder, tea residue powder, bamboo chips, sawdust, coconut shell powder, palm shell powder, pine cone powder and peanut shell powder.

[0019] According to the first aspect, in a possible implementation, the binder includes one or more of sodium silicate, polyacrylamide, carboxymethyl cellulose, sodium alginate, guar gum, soluble gelatin and soluble modified starch;

[0020] The bactericide includes one or more of sodium benzoate, p-hydroxybenzoate, potassium sorbate, sodium lactate, sodium dehydroacetate, sodium diacetate, sodium fumarate and phenylisothiazoline-3-one;

[0021] The mass ratio of the binder, the bactericide and the deionized water in the first solution is (5-15): (2.5-5): (80-90).

[0022] According to the first aspect, in a possible implementation manner, the mass ratio of the powder material to the plant fiber powder in the mixed powder is (75-85):(15-25).

[0023] According to the first aspect, in a possible implementation manner, the particle size of the lithium slag-based cat litter is 2 mm-5 mm.

[0024] In a second aspect, the present application also provides a lithium slag-based cat litter, wherein the lithium slag-based cat litter is prepared by the preparation method of the lithium slag-based cat litter described in the first aspect.

[0025] The lithium slag-based cat litter and the preparation method thereof provided in the present application utilize the water absorption and gelling properties of lithium slag. The lithium slag-based cat litter has high agglomeration strength and can quickly form stable agglomerates for easy cleaning. In addition, plant fiber powder is added thereto to increase the softness and water absorption of the lithium slag-based cat litter. The plant fiber can be directly composted as soil nutrients, effectively preventing the occurrence of secondary pollution, promoting the recycling of resources, and improving its environmental performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 The present invention is a schematic flow diagram of a method for preparing lithium slag-based cat litter according to an embodiment. DETAILED DESCRIPTION

[0028] The words "preferably", "more preferably", etc. in the present invention refer to embodiments of the present invention that may provide certain beneficial effects in certain circumstances. However, other embodiments may also be preferred under the same circumstances or other circumstances. In addition, the description of one or more preferred embodiments does not imply that other embodiments are not applicable, nor is it intended to exclude other embodiments from the scope of the present invention.

[0029] When a numerical range is disclosed herein, the above range is considered to be continuous and includes the minimum and maximum values ​​of the range, as well as every value between such minimum and maximum values. Further, when a range refers to an integer, every integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0031] Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0032] In a first aspect, the present application provides a method for preparing a lithium slag-based cat litter. In some embodiments, the method for preparing a lithium slag-based cat litter comprises the following steps:

[0033] Step 10, obtaining lithium slag raw material;

[0034] The lithium slag raw material includes spodumene slag or lepidolite; lithium slag is an ideal raw material for preparing cat litter due to its porous structure and strong adsorption properties. The porous structure makes the lithium slag have excellent water absorption and air permeability, while the strong adsorption properties help to remove odors and bacteria.

[0035] Step 20, calcining the lithium slag raw material, and obtaining modified lithium slag after cooling;

[0036] The lithium slag raw material is calcined at high temperature to make it lose interlayer water. This process not only increases the porosity and water absorption of the lithium slag, but also further improves its gelling properties. The improvement of gelling properties helps the cat litter to form stable clumps during use, making it easier to clean.

[0037] Step 30, wet-milling the modified lithium slag, siliceous auxiliary materials and additives and then sieving them, and drying the sieved materials to obtain powder materials;

[0038] Step 40, adding plant fiber powder to the powder material, and mixing evenly to obtain a mixed powder material;

[0039] The addition of plant fiber not only increases the softness and water absorption of lithium slag-based cat litter, but also improves its environmental performance. Plant fiber can be directly composted as soil nutrients, effectively preventing the occurrence of secondary pollution and promoting the recycling of resources.

[0040] Step 50, feeding the mixed powder into a disc granulator, spraying the first solution, and granulating the mixed powder into an embryo body by the granulator;

[0041] During the granulation process, the first solution is sprayed on the mixed powder. The first solution includes a binder, a bactericide and deionized water. The deionized water is used as a solvent. The binder helps the particles to bond together and improve the agglomeration strength of the cat litter. The bactericide can inhibit the growth of bacteria in the cat litter and maintain the hygienic properties of the cat litter.

[0042] Step 60: Dry the embryo to obtain lithium slag-based cat litter.

[0043] Drying treatment is performed to remove excess water and solvent to obtain the final lithium slag-based cat litter product. Lithium slag-based cat litter has high agglomeration strength and can quickly form stable agglomerates for easy cleaning; it also has a low pulverization rate, which reduces dust generation during use and maintains indoor air quality; lithium slag-based cat litter also has excellent antibacterial properties that effectively inhibit the growth of bacteria and odors, providing a more hygienic environment for domestic pets.

[0044] In addition, the cat litter exhibits stable quality during the production process, and its production process is relatively simple and has high economic benefits.

[0045] In this embodiment, lithium slag is used as a raw material to prepare lithium slag-based cat litter, which can achieve large-scale mixing of lithium slag, that is, high-value-added recycling.

[0046] Furthermore, in some embodiments, the preparation method of lithium slag-based cat litter is further refined, specifically comprising the following steps:

[0047] Step 10, obtaining lithium slag raw material;

[0048] The lithium slag raw material includes spodumene slag or lepidolite; lithium slag is an ideal raw material for preparing cat litter due to its porous structure and strong adsorption properties. The porous structure makes the lithium slag have excellent water absorption and air permeability, while the strong adsorption properties help to remove odors and bacteria.

[0049] Step 20, calcining the lithium slag raw material, and obtaining modified lithium slag after cooling;

[0050] The lithium slag raw material is calcined at high temperature to make it lose interlayer water. This process not only increases the porosity and water absorption of the lithium slag, but also further improves its gelling properties. The improvement of gelling properties helps the cat litter to form stable clumps during use, making it easier to clean.

[0051] When the raw material of lithium slag is spodumene slag, the spodumene slag is evenly mixed with the modifier and calcined, and then the modified lithium slag is obtained after cooling, and its performance is further optimized.

[0052] The modifier includes one or more of potassium hydroxide, sodium hydroxide, potassium carbonate and sodium carbonate, which can react with spodumene slag to improve the pore structure, water absorption and gelling properties. The calcination and modification process significantly increases the porosity of the lithium slag and improves the water absorption. This helps the cat litter to better absorb urine and water during use and form stable lumps.

[0053] The amount of modifier added is 0.5%-10% of the mass of spodumene slag. The amount added within this range can ensure the modification effect while avoiding the negative impact of excessive modifier on the performance of cat litter.

[0054] The calcined lithium slag needs to be cooled to room temperature for subsequent processing. The cooling process should be carried out smoothly to avoid the degradation of lithium slag properties caused by rapid temperature changes.

[0055] Step 30, wet-milling the modified lithium slag, siliceous auxiliary materials and additives and then sieving them, and drying the sieved materials to obtain powder materials;

[0056] The siliceous auxiliary material includes a first auxiliary material and a second auxiliary material, wherein the first auxiliary material includes one or more of kaolin, diatomaceous earth and bentonite, and the first auxiliary material has good adsorption and plasticity, which is helpful for the molding and water absorption of the cat litter. The second auxiliary material includes vermiculite and / or perlite; the second auxiliary material has the characteristics of light weight and porosity, which can further improve the water absorption and air permeability of the cat litter.

[0057] The additive includes calcium carbonate and / or calcium hydroxide, which can not only effectively neutralize the acidity of urine, but also react with active silicon and aluminum in lithium slag to form stable hydrated calcium silicate and hydrated calcium aluminate, which is helpful to absorb microorganisms and improve the clumping performance of cat litter.

[0058] The modified lithium slag, the siliceous auxiliary material (the first auxiliary material and the second auxiliary material) and the additive are uniformly mixed in a certain proportion.

[0059] Wet ball mill is used for ball milling to fully refine and mix the raw materials. Wet ball milling helps the raw materials to fully react and refine, thereby improving the performance of cat litter.

[0060] The milled material is screened through a mesh to remove impurities and oversized particles.

[0061] The screened material is dried to remove moisture and obtain the final powder material. The drying process should ensure that the material is fully dry to avoid moisture absorption or agglomeration during subsequent use.

[0062] The mass ratio of each substance in the powder material should be controlled within a certain range to ensure the performance of the cat litter. Specifically, the mass ratio of the lithium slag raw material, the first auxiliary material, the second auxiliary material and the modifier should be controlled between (70-85): (5-15): (0-10): (1-5).

[0063] That is, the mass ratio of lithium slag to the first auxiliary material (kaolin + diatomaceous earth + bentonite), the second auxiliary material (vermiculite + perlite) and calcium carbonate / calcium hydroxide should also be controlled between (70-85): (5-15): (0-10): (1-5).

[0064] Step 40, adding plant fiber powder to the powder material, and mixing evenly to obtain a mixed powder material;

[0065] The addition of plant fiber makes cat litter softer, improves comfort, and enhances its water absorption, which helps to quickly absorb urine and reduce odor. Plant fiber comes from renewable resources and can be composted, which effectively reduces the difficulty of cat litter waste disposal and promotes the recycling of resources.

[0066] The plant fiber powder includes one or more of bean curd residue powder, sweet potato residue powder, bagasse powder, tea residue powder, bamboo scraps, wood chips, coconut shell powder, palm shell powder, pine cone powder and peanut shell powder. These raw materials are not only low in cost, but also widely available, which helps to reduce production costs. The addition of plant fiber powder not only increases the softness and water absorption of cat litter, but also improves its environmental performance.

[0067] In summary, plant fibers not only increase the softness and water absorption of materials, but can also be directly composted as soil nutrients, which effectively prevents the occurrence of secondary pollution and fundamentally promotes the recycling of resources.

[0068] The mass ratio of powder material to plant fiber powder is controlled between (75-85): (15-25) to ensure that the performance of cat litter is stable and the cost is controllable. In practical applications, the mixing ratio should be comprehensively considered based on factors such as the softness, water absorption and cost of cat litter. At the same time, the ratio between various plant fiber powders is also optimized, such as (bean curd residue + sweet potato residue + bagasse powder): (tea residue): (bamboo chips + wood chips): (coconut shell powder + palm shell powder + pine cone powder + peanut shell powder) = (55-65): (5-10): (15-30): (0-15) to further improve the performance of cat litter.

[0069] Among them, tofu residue, sweet potato residue, and bagasse powder are rich in fiber and natural hygroscopic components, which can significantly increase the softness and water absorption of cat litter. At the same time, as agricultural waste, they are low-cost and environmentally friendly. Tea residue has a natural aroma and antibacterial properties, which can improve the smell of cat litter and inhibit bacterial growth. The addition of an appropriate amount of tea residue can improve the overall quality of cat litter. Bamboo chips and sawdust have good air permeability and water absorption, which can increase the looseness and comfort of cat litter. At the same time, as forestry waste, they also have high environmental value. Coconut shell powder, palm shell powder, pine cone powder, and peanut shell powder are rich in fiber and minerals, which can increase the hardness and wear resistance of cat litter.

[0070] During the mixing process, ensure that the powder material and the plant fiber powder are fully and evenly mixed to avoid the phenomenon of excessively high or low local concentration.

[0071] Preparation of plant fiber powder (taking tofu dregs as an example)

[0072] Wash the tofu residue several times to remove impurities and odors. Use sodium hydroxide or potassium hydroxide to adjust the pH value of the washing solution to 6.5-7.5 to improve the properties of the tofu residue. Dry the washed tofu residue in a dryer to remove moisture for subsequent processing.

[0073] The dried tofu residue is placed in a crushing device for crushing. It is sieved through an 80-mesh or 100-mesh sieve to obtain tofu residue powder with uniform particle size. This step ensures that the quality of the tofu residue powder meets the requirements of cat litter production.

[0074] Step 50, feeding the mixed powder into a disc granulator, spraying the first solution, and granulating the mixed powder into an embryo body by the granulator;

[0075] During the granulation process, the first solution is sprayed on the mixed powder. The first solution includes a binder, a bactericide and deionized water. The deionized water is used as a solvent. The binder helps the particles to bond together and improve the agglomeration strength of the cat litter. The bactericide can inhibit the growth of bacteria in the cat litter and maintain the hygienic properties of the cat litter.

[0076] The binder includes one or more of sodium silicate, polyacrylamide, carboxymethyl cellulose, sodium alginate, guar gum, soluble gelatin and soluble modified starch;

[0077] The bactericide includes one or more of sodium benzoate, p-hydroxybenzoate, potassium sorbate, sodium lactate, sodium dehydroacetate, sodium diacetate, sodium fumarate and phenylisothiazoline-3-one;

[0078] The mass ratio of the binder, the bactericide and the deionized water in the first solution is controlled between (5-15): (2.5-5): (80-90). This ratio range ensures that the solution has good binding properties and bactericidal effects, while avoiding the adverse effects of excessive additives on the performance of cat litter.

[0079] The mixed powder is fully mixed with the first solution and granulated by the rotation and shearing action of the disc granulator. This process requires the control of appropriate rotation speed and temperature to ensure the uniformity and efficiency of granulation. The first solution is evenly sprayed on the mixed powder through a precise spraying system. This helps ensure that each cat litter particle receives sufficient binder and fungicide, thereby improving the overall performance of the cat litter.

[0080] Step 60: The particle size of the lithium slag-based cat litter is 2 mm to 5 mm.

[0081] The particle size of lithium slag-based cat litter is controlled between 2mm and 5mm. This range can ensure that the cat litter has good water absorption and agglomeration properties, while avoiding the adverse effects of particles that are too large or too small on the user experience. Through screening and grading equipment, cat litter particles that do not meet the particle size requirements are screened out or re-granulated to ensure that the particle size of the final product is uniform.

[0082] The embryos are dried to obtain lithium slag-based cat litter.

[0083] Example 1

[0084] The lithium mica residue, siliceous auxiliary materials and additives are from a lithium carbonate enterprise in Yichun, Jiangxi Province. The plant fibers are bagasse powder, tea residue and sawdust, which are from agricultural enterprises in the same province. The binder is sodium silicate and the fungicide is potassium sorbate. The specific steps are as follows:

[0085] (1) wet-milling lithium slag, bentonite, perlite and limestone in a mass ratio of 80:10:5:5, sieving and drying the sieved materials to obtain mixed powder 1;

[0086] (2) Mix bagasse powder, tea residue powder and sawdust in a mass ratio of 70:5:25 and add them to the mixed powder 2;

[0087] (3) preparing a mixed solution of sodium silicate, potassium sorbate and deionized water in a ratio of 15:5:80;

[0088] (4) Mixing mixed powder 1 and mixed powder 2 in a ratio of 80:20 to obtain mixed powder 3;

[0089] (5) feeding the mixed powder 3 obtained in step (4) into a disc granulator, spraying the mixed solution obtained in step (3), and granulating the mixture by the granulator;

[0090] (6) The water-containing particles obtained in step (5) are dried at a temperature of 150° C. for 30 min to obtain finished cat litter 1.

[0091] Example 2

[0092] Lepidolite lithium slag, siliceous auxiliary materials and additives are sourced from a lithium carbonate enterprise in Yichun, Jiangxi Province. The plant fibers are sweet potato slag powder, tea slag and bamboo scraps, sourced from agricultural enterprises in the same province. Sodium silicate is selected as the binder and sodium benzoate is selected as the fungicide. The specific steps are as follows:

[0093] (1) wet-milling lithium slag, bentonite and limestone in a mass ratio of 85:10:5, sieving the sieved material and drying the sieved material to obtain a mixed powder 1;

[0094] (2) Mix sweet potato residue powder, tea residue and bamboo scraps in a mass ratio of 70:5:25 and add them to mixed powder 2;

[0095] (3) preparing a mixed solution of sodium silicate, sodium benzoate and deionized water in a ratio of 15:5:80;

[0096] (4) Mixing mixed powder 1 and mixed powder 2 in a ratio of 80:20 to obtain mixed powder 3;

[0097] (5) feeding the mixed powder 3 obtained in step (4) into a disc granulator, spraying the mixed solution obtained in step (3), and granulating the mixture by the granulator;

[0098] (6) The water-containing particles obtained in step (5) are dried at a temperature of 150° C. for 30 min to obtain finished cat litter 2.

[0099] Example 3

[0100] The lithium mica residue, siliceous auxiliary materials and additives are from a lithium carbonate enterprise in Yichun, Jiangxi Province. The plant fibers are tofu residue powder, tea residue powder, sawdust and peanut shell powder, which are from agricultural enterprises in the same province. Guar gum is selected as the binder and potassium sorbate is selected as the fungicide. The specific steps are as follows:

[0101] (1) wet-milling lithium slag, bentonite, perlite and limestone in a mass ratio of 80:10:5:5, sieving and drying the sieved materials to obtain mixed powder 1;

[0102] (2) Mix tofu residue powder, tea residue, sawdust, and peanut shell powder in a mass ratio of 80:5:10:5 and add them to mixed powder 2;

[0103] (3) preparing a mixed solution of guar gum, potassium sorbate and deionized water in a ratio of 5:5:90;

[0104] (4) Mixing mixed powder 1 and mixed powder 2 in a ratio of 75:25 to obtain mixed powder 3;

[0105] (5) feeding the mixed powder 3 obtained in step (4) into a disc granulator, spraying the mixed solution obtained in step (3), and granulating the mixture by the granulator;

[0106] (6) The water-containing particles obtained in step (5) were dried at a temperature of 150° C. for 30 min to obtain finished cat litter 3.

[0107] The product of the embodiment is tested according to T / SDPIA05-2022 "General Technical Specifications for Pet Cat Litter", and the specific data are as follows:

[0108] Table 1: Product performance table

[0109]

[0110]

[0111] Through various experiments, it can be found that the cat litter products prepared in each embodiment meet the standards and have relatively excellent performance. The invention not only realizes the high-value utilization of lithium slag, but also proposes a method for preparing cat litter with excellent performance.

[0112] The applicant declares that the present invention illustrates the detailed method of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed method, that is, it does not mean that the present invention must rely on the above-mentioned detailed method to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the method of the present invention, addition of auxiliary steps, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method for preparing a lithium slag-based cat litter, characterized in that: The method comprises: Obtaining lithium slag raw materials; calcining the lithium slag raw material, and obtaining modified lithium slag after cooling; The modified lithium slag, siliceous auxiliary materials and additives are wet ball-milled and then sieved, and the sieved materials are dried to obtain powder materials; Adding plant fiber powder to the powder material, and mixing evenly to obtain a mixed powder material; The mixed powder is fed into a disc granulator, sprayed with the first solution, and granulated by the granulator to obtain an embryo body; Drying the embryo to obtain lithium slag-based cat litter; Wherein, the lithium slag raw material includes spodumene slag or lepidolite; and the first solution includes a binder, a bactericide and deionized water.

2. The preparation method of lithium slag-based cat litter according to claim 1, wherein When the lithium slag raw material is spodumene slag; The step of calcining the lithium slag raw material and obtaining modified lithium slag after cooling comprises: The spodumene slag and the modifier are uniformly mixed and calcined, and then cooled to obtain modified lithium slag; The modifier includes one or more of potassium hydroxide, sodium hydroxide, potassium carbonate and sodium carbonate, and the addition amount of the modifier is 0.5%-10% of the mass of the spodumene slag.

3. The preparation method of lithium slag-based cat litter according to claim 1, wherein The siliceous auxiliary material comprises a first auxiliary material and a second auxiliary material, wherein the first auxiliary material comprises one or more of kaolin, diatomaceous earth and bentonite, and the second auxiliary material comprises vermiculite and / or perlite; and the additive comprises calcium carbonate and / or calcium hydroxide.

4. The preparation method of lithium slag-based cat litter according to claim 3, wherein The mass ratio of each substance in the powder material is as follows: lithium slag raw material: first auxiliary material: second auxiliary material: modifier = (70-85): (5-15): (0-10): (1-5).

5. The preparation method of lithium slag-based cat litter according to claim 1, characterized in that, The plant fiber powder includes one or more of bean curd residue powder, sweet potato residue powder, bagasse powder, tea residue powder, bamboo chips, wood chips, coconut shell powder, palm shell powder, pine cone powder and peanut shell powder.

6. The preparation method of lithium slag-based cat litter according to claim 1, characterized in that, The binder includes one or more of sodium silicate, polyacrylamide, carboxymethyl cellulose, sodium alginate, guar gum, soluble gelatin and soluble modified starch; The bactericide includes one or more of sodium benzoate, p-hydroxybenzoate, potassium sorbate, sodium lactate, sodium dehydroacetate, sodium diacetate, sodium fumarate and phenylisothiazoline-3-one; The mass ratio of the binder, the bactericide and the deionized water in the first solution is (5-15): (2.5-5): (80-90).

7. The preparation method of lithium slag-based cat litter according to claim 1, characterized in that, The mass ratio of the powder material to the plant fiber powder in the mixed powder is (75-85):(15-25).

8. The preparation method of lithium slag-based cat litter according to claim 2, characterized in that, The particle size of the lithium slag-based cat litter is 2mm-5mm.

9. A lithium slag-based cat litter, characterized in that: The lithium slag-based cat litter is prepared by the preparation method of the lithium slag-based cat litter according to any one of claims 1 to 8.

Images