Lightweight building decorative artificial stone prepared based on calcined kaolin

Abstract

The application discloses a light building decoration artificial stone prepared based on calcined kaolin, which comprises the following raw materials: aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, resin, dispersing agent, color particle and reinforcing agent. The artificial stone is prepared by limiting the raw material composition of the artificial stone and matching a specific preparation method, so that the prepared artificial stone has the following advantages: good surface gloss, irregularly distributed color particles with different sizes, bright and rich color, good decoration effect, high overall strength of the artificial stone and low deformation cracking.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of artificial stone preparation, and particularly relates to a light building decoration artificial stone prepared based on calcined kaolin. BACKGROUND

[0002] With the rapid development of society and the improvement of people's living standards, people's appreciation of beauty has also risen to a certain level. Stone, as a high-grade building decoration material, is widely used, and is applied to indoor and outdoor decoration and the production and processing of various handicrafts, and the market demand is increasing. Stone is divided into natural stone and artificial stone. Natural stone refers to the material processed into block or plate shape from natural rock body, and has clear texture and high strength, thus having good use and decoration effect. However, the resource of natural stone is decreasing year by year, and it is not easy to mine and transport, and the construction intensity is large, and there is a certain degree of radiation.

[0003] In recent years, people have begun to study artificial stone. Artificial stone is made of industrial raw materials through scientific process. Artificial marble is mainly composed of binder and inorganic filler. At present, there are various binders and inorganic fillers applied to artificial marble. However, the present application found in practice that the existing artificial marble still has the problems of low hardness, poor wear resistance, poor mechanical properties, easy deformation and fracture of the product, and single appearance and poor decoration effect of the produced artificial stone. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art, and provides a light building decoration artificial stone prepared based on calcined kaolin.

[0005] The present application adopts the following technical scheme:

[0006] A light building decoration artificial stone prepared based on calcined kaolin comprises the following raw materials in parts by weight: aggregate 40-50 parts, calcined kaolin 25-30 parts, diatomite 10-12 parts, expanded vermiculite powder 5-8 parts, sepiolite powder 6-10 parts, resin 15-20 parts, dispersing agent 3-5 parts, color particle 5-10 parts, and reinforcing agent 6-8 parts.

[0007] The preparation method comprises the following steps:

[0008] Step one, the aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, dispersing agent, color particle and reinforcing agent are weighed according to the weight, mixed, and 5-7% of water by weight of the mixture is added, and then the resin is added and stirred and mixed uniformly;

[0009] Step two, the mixed material stirred in step one is poured into a mold, oscillated and spread flat, and then sent into a pressing device for pressing and forming;

[0010] Step three, after the pressing is completed, demolding, the blank after demolding is sent into the kiln with preheating of 180-200℃, after the kiln cooling chamber is cooled to room temperature, the blank is placed in the kiln for 12h or more, then the kiln is controlled to be heated to 115-125℃, and the blank is cured for 5-6h, and then the kiln is cooled to room temperature again;

[0011] Step four, the blank after curing is sent into a thickness setting device to set the thickness, then the blank is inspected, cut into the required size, and placed in a natural environment for air drying for 12h or more, and then packaged and stored in a warehouse.

[0012] Further, the modification method of the calcined kaolin is as follows: the kaolin is first sent into a kiln, calcined at 980-1020℃ for 5-6h, cooled to room temperature, added into water, and stirred and mixed into a slurry; then 1-2% of the modification liquid by weight of the kaolin is added, and the stirring is continued for 3-4h, and then centrifugal separation is performed; the separated kaolin is again sent into a kiln, calcined at 90-110℃ for 1-2h, and cooled to room temperature to obtain the calcined kaolin.

[0013] Further, the modification liquid is composed of vinyltrimethoxysilane, ethyl acetate, and lauric acid diethanolamide in a volume ratio of 1:0.2-0.3:0.12-0.15.

[0014] Further, the color particle is composed of the following raw materials in parts by weight: 3-5 parts of pigment, 30-40 parts of quartz, 10-12 parts of limestone, 15-18 parts of potassium feldspar, 5-8 parts of borax, 3-5 parts of spodumene, 8-12 parts of illite, 0.5-1 part of titanium oxide, and 2-3 parts of zinc oxide.

[0015] Further, the preparation method of the color particle is as follows: the quartz, limestone, potassium feldspar, borax, and spodumene are first put into a smelting furnace, smelted into blocks at 1180-1230℃, and then the smelted blocks are quenched in water, mixed with the pigment, illite, titanium oxide, and zinc oxide, crushed, and wet ball milled into a slurry; and then the slurry is screened, de-ironed, and spray granulated to obtain the color particle.

[0016] Further, the reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.5-0.6.

[0017] Further, the color particle includes 30-40 parts of 1-3mm color particle blocks, 30-40 parts of 3-6mm color particle blocks, and 10-20 parts of 8-10mm color particle blocks.

[0018] Further, the aggregate is mullite leftover material.

[0019] From the above description of the present application, compared with the prior art, the beneficial effects of the present application are: by limiting the raw material composition of artificial stone and cooperating with a specific preparation method, the prepared artificial stone has good surface gloss, irregularly distributed color particles of different sizes, bright and rich color, good decoration effect, and high overall strength of the artificial stone, which is not easy to crack and deform; wherein, diatomite, expanded vermiculite powder and sepiolite powder with porous structure are introduced into the raw material to cooperate with calcined kaolin, so that the prepared artificial stone has the characteristics of light weight, and the introduced calcined kaolin is modified by a specific process, which can effectively enhance the strength and surface gloss of the artificial stone to meet the use requirements of the artificial stone;

[0020] The modification method of calcined kaolin is specifically limited, which is high-temperature calcination, addition of modification liquid and low-temperature calcination, so that the obtained calcined kaolin has higher dispersity and stability, can be uniformly dispersed in various raw materials, the structure of kaolin is changed by high-temperature calcination, and the performance is improved by cooperating with the limited modifier, so as to effectively improve the strength of the prepared artificial stone and ensure the strength of the prepared artificial stone;

[0021] By limiting the raw material composition and preparation method of the color particles, the prepared color particles are translucent, have strong color stability and have light color degree, which has excellent decoration effect. In the preparation process, the raw materials except pigments, illite, titanium oxide and zinc oxide are first melted to prevent the pigments from settling in the subsequent stirring process, thereby affecting the color of the color particles, avoiding the color layer of the color particles caused by direct stirring and mixing, and ensuring the uniformity of the color of the color particles.

[0022] The composition of the reinforcing agent is specifically limited, so that the montmorillonite and fly ash are filled in the gaps between the raw materials to improve the strength of the prepared artificial stone and meet the use requirements of the artificial stone.

[0023] The specific process of curing is limited, the kiln is first cooled to room temperature and placed for more than 12h, so that the water in the middle of the blank can slowly drain out, preventing the internal cracking of the artificial stone caused by direct heating and curing, thereby affecting the strength of the prepared artificial stone. DETAILED DESCRIPTION

[0024] The present application is further described by the following specific embodiments.

[0025] The light building decoration artificial stone prepared based on calcined kaolin comprises the following raw materials in parts by weight: aggregate 40-50 parts, calcined kaolin 25-30 parts, diatomite 10-12 parts, expanded vermiculite powder 5-8 parts, sepiolite powder 6-10 parts, resin 15-20 parts, dispersing agent 3-5 parts, color particle 5-10 parts, and reinforcing agent 6-8 parts; specifically, the aggregate is mullite leftover material, comprising 40-50 parts of 1-5 mm aggregate and 50-60 parts of 5-8 mm aggregate; further, the particle size of the calcined kaolin, diatomite, expanded vermiculite powder and sepiolite powder is 80-100 mesh.

[0026] The color particle comprises 30-40 parts of 1-3 mm color particle block, 30-40 parts of 3-6 mm color particle block and 10-20 parts of 8-10 mm color particle block; specifically, the color particle comprises the following raw materials in parts by weight: pigment 3-5 parts, quartz 30-40 parts, limestone 10-12 parts, potassium feldspar 15-18 parts, borax 5-8 parts, spodumene 3-5 parts, illite 8-12 parts, titanium oxide 0.5-1 part and zinc oxide 2-3 parts; and the preparation method is as follows: first, the quartz, limestone, potassium feldspar, borax and spodumene are put into a smelting furnace and smelted into blocks at 1180-1230℃, and then the smelted blocks are quenched in water, mixed with the pigment, illite, titanium oxide and zinc oxide, crushed, wet ball milled into mud slurry; and then the mud slurry is screened, de-ironed and spray granulated to obtain the color particle.

[0027] The modification method of the calcined kaolin is as follows: first, the kaolin is sent into a kiln and baked at 980-1020℃ for 5-6 hours, then cooled to room temperature, mixed with water by stirring to form a slurry; then 1-2% of a modification liquid by weight of the kaolin is added, and the mixture is continuously stirred for 3-4 hours and then centrifuged; the separated kaolin is again sent into a kiln and baked at 90-110℃ for 1-2 hours, and then cooled to room temperature to obtain the calcined kaolin; specifically, the modification liquid is composed of vinyl trimethoxysilane, ethyl acetate and lauric acid diethanolamide in a volume ratio of 1:0.2-0.3:0.12-0.15.

[0028] The reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.5-0.6.

[0029] The preparation method comprises the following steps:

[0030] Step one, the aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, dispersing agent, color particle and reinforcing agent are weighed and mixed according to the weight, and 5-7% of water by weight of the mixture is added, and then the mixture is stirred and mixed uniformly, and then the resin is added and continuously stirred and mixed uniformly;

[0031] Step two, the mixed material stirred in step one is poured into a mold, vibrated, spread flat and then sent into a pressing equipment for pressing and forming.

[0032] Step three, after the completion of the pressing, demolding, the blank after demolding into the kiln with 180-200℃ preheating, with the kiln cooling room room temperature, placed in the kiln for 12h or more, and then control the kiln temperature to 115-125℃, curing 5-6h, and then with the kiln cooling to room temperature;

[0033] Step four, the blank after curing into the thickness equipment for thickness, and then test, cutting into the required size, and then placed in the natural environment drying 12h or more, packaging, storage.

[0034] Example 1

[0035] A kind of light building decoration artificial stone based on calcined kaolin preparation, including the following weight parts of raw materials: aggregate 40 parts, calcined kaolin 30 parts, diatomite 10 parts, expanded vermiculite powder 8 parts, sepiolite powder 6 parts, resin 15 parts, dispersing agent 5 parts, color particle 10 parts, reinforcing agent 6 parts;Specifically, the aggregate is mullite scrap, including 40 parts of 1-5mm aggregate and 60 parts of 5-8mm aggregate;Further, the particle size of calcined kaolin, diatomite, expanded vermiculite powder and sepiolite powder is 80-100 mesh.

[0036] Among them, the color particle includes 30 parts of 1-3mm color particle block, 40 parts of 3-6mm color particle block and 10 parts of 8-10mm color particle block;Specifically, the color particle includes the following weight parts of raw materials: pigment 3 parts, quartz 40 parts, limestone 10 parts, potassium feldspar 18 parts, borax 5 parts, spodumene 3 parts, illite 12 parts, titanium oxide 0.5 parts, zinc oxide 3 parts;Its preparation method is as follows: first, put quartz, limestone, potassium feldspar, borax and spodumene into a smelting furnace, smelt into blocks at 1180℃, and then mix, crush, wet ball mill the smelted blocks with pigment, illite, titanium oxide and zinc oxide to obtain mud slurry;Then sieve the mud slurry, remove iron and spray granulation to obtain color particles.

[0037] The modification method of calcined kaolin is as follows: first, put kaolin into a kiln, calcine at 980℃ for 6 hours, cool to room temperature, add water, stir and mix into slurry;Then add 1% of the weight of the kaolin of the modification liquid, continue to stir for 4h, and then centrifugal separation;The separated kaolin is again put into a kiln, calcine at 90℃ for 2h, and then cool to room temperature to obtain the calcined kaolin;Specifically, the modification liquid is composed of vinyl trimethoxysilane, ethyl acetate and lauric acid diethanolamide in a volume ratio of 1:0.2:0.15.

[0038] The reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.5.

[0039] The preparation method comprises the following steps:

[0040] Step one, the aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, dispersant, color particle, reinforcing agent by weight, mixed, and add 5% of the weight of the mixture water, mixed and stirred evenly, then add resin, continue to stir and mix evenly;

[0041] Step two, the mixed material of step one is poured into the mold, shaken and spread evenly, and then sent to the pressing equipment for pressing;

[0042] Step three, after pressing, demolding, the blank after demolding is sent to the kiln with preheating at 180℃, and after the room temperature of the cooling chamber, it is placed in the kiln for 12h or more, and then the kiln is controlled to rise to 115℃, and the curing is maintained for 6h, and then the kiln is cooled to room temperature;

[0043] Step four, the blank after curing is sent to the thickness setting equipment for thickness setting, then inspected, cut to the required size, and placed in a natural environment for air drying for 12h or more, packaged and stored in the warehouse.

[0044] Example 2

[0045] A kind of light building decoration artificial stone based on calcined kaolin preparation, including the following weight parts of raw materials: aggregate 50 parts, calcined kaolin 25 parts, diatomite 12 parts, expanded vermiculite powder 5 parts, sepiolite powder 10 parts, resin 20 parts, dispersant 3 parts, color particle 5 parts, reinforcing agent 8 parts;Specifically, the aggregate is mullite scrap, including 50 parts of 1-5mm aggregate and 50 parts of 5-8mm aggregate;Further, the particle size of calcined kaolin, diatomite, expanded vermiculite powder and sepiolite powder is 80-100 mesh.

[0046] Among them, the color particle includes 40 parts of 1-3mm color particle block, 30 parts of 3-6mm color particle block and 20 parts of 8-10mm color particle block;Specifically, the color particle includes the following weight parts of raw materials: pigment 5 parts, quartz 30 parts, limestone 12 parts, potassium feldspar 15 parts, borax 8 parts, spodumene 5 parts, illite 8 parts, titanium oxide 1 part, zinc oxide 2 parts;Its preparation method is as follows: first, put quartz, limestone, potassium feldspar, borax and spodumene into a smelting furnace, smelt into blocks at 1230℃, and after quenching the smelted block, mix it with pigment, illite, titanium oxide and zinc oxide, crush, wet ball mill to get mud slurry;Then sieve the mud slurry, remove iron, spray granulation to get color particles.

[0047] The modification method of the calcined kaolin is as follows: firstly, the kaolin is sent into a kiln, calcined at 1020℃ for 5 hours, cooled to room temperature, added into water, and stirred and mixed into a slurry; then 2% of the modification liquid by weight of the kaolin is added, and the stirring is continued for 3 hours, and then centrifugal separation is performed; the separated kaolin is again sent into a kiln, calcined at 110℃ for 1 hour, cooled to room temperature, and the calcined kaolin is obtained; specifically, the modification liquid is composed of vinyltrimethoxysilane, ethyl acetate, and lauric acid diethanolamide in a volume ratio of 1:0.3:0.12.

[0048] The reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.6.

[0049] The preparation method comprises the following steps:

[0050] Step one, the aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, dispersing agent, color particle, and reinforcing agent are weighed and mixed according to the weight ratio, and 7% of water by weight of the mixture is added, and the mixture is stirred and mixed uniformly, and then the resin is added and the stirring and mixing are continued until uniform;

[0051] Step two, the stirred mixture in step one is poured into a mold, oscillated and spread flat, and then sent into a pressing device for pressing and forming;

[0052] Step three, after the pressing is completed, the mold is removed, and the blank after demolding is sent into a kiln with a preheating temperature of 200℃, and after the room temperature of the kiln cooling chamber, the kiln is placed in the kiln for 12 hours or more, and then the kiln is controlled to be heated to 125℃, and the temperature is maintained for 5 hours, and then the kiln is cooled to room temperature;

[0053] Step four, the blank after the maintenance is sent into a thickness setting device for thickness setting, and then inspected and cut into the required size, and then placed in a natural environment for air drying for 12 hours or more, and then packaged and stored in a warehouse.

[0054] Example 3

[0055] A light building decoration artificial stone prepared based on calcined kaolin, comprising the following raw materials by weight: aggregate 45 parts, calcined kaolin 28 parts, diatomite 11 parts, expanded vermiculite powder 6 parts, sepiolite powder 8 parts, resin 18 parts, dispersing agent 4 parts, color particle 7 parts, and reinforcing agent 7 parts; specifically, the aggregate is mullite offcut, including 45 parts of 1-5mm aggregate and 55 parts of 5-8mm aggregate; further, the particle size of the calcined kaolin, diatomite, expanded vermiculite powder, and sepiolite powder is 80-100 mesh.

[0056] The color granules include 35 parts of 1-3mm color granule blocks, 35 parts of 3-6mm color granule blocks and 15 parts of 8-10mm color granule blocks; specifically, the color granules include the following raw material components by weight: 4 parts of pigment, 35 parts of quartz, 11 parts of limestone, 16 parts of potassium feldspar, 6 parts of borax, 4 parts of spodumene, 10 parts of illite, 0.8 parts of titanium oxide and 2.5 parts of zinc oxide; the preparation method is as follows: first, the quartz, limestone, potassium feldspar, borax and spodumene are put into a smelting furnace and smelted into blocks at 1210℃, and then the smelted blocks are quenched in water, mixed with the pigment, illite, titanium oxide and zinc oxide, crushed, wet ball milled into a slurry; then the slurry is screened, de-ironed and spray granulated to obtain the color granules.

[0057] The modification method of the calcined kaolin is as follows: first, the kaolin is sent into a kiln and calcined at 1000℃ for 5.5 hours, then cooled to room temperature, mixed with water by stirring to form a slurry; then 1.5% of the modification liquid by weight of the kaolin is added, and the stirring is continued for 3.5 hours, and then centrifugal separation is performed; the separated kaolin is again sent into a kiln and calcined at 100℃ for 1.5 hours, and then cooled to room temperature to obtain the calcined kaolin; specifically, the modification liquid is composed of vinyltrimethoxysilane, ethyl acetate and lauric acid diethanolamide in a volume ratio of 1:0.25:0.13.

[0058] The reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.55.

[0059] The preparation method comprises the following steps:

[0060] Step one, the aggregate, calcined kaolin, diatomite, expanded vermiculite powder, sepiolite powder, dispersing agent, color granules and reinforcing agent are weighed and mixed according to the weight, and 5-7% of water by weight of the mixture is added, mixed and stirred uniformly, and then the resin is added and continuously stirred and mixed uniformly;

[0061] Step two, the mixed material stirred in step one is poured into a mold, vibrated, spread flat and then sent into a pressing device for pressing and forming;

[0062] Step three, after pressing is completed, demolding is performed, and the roughcast after demolding is sent into a kiln with preheating at 190℃, and after the room temperature of the kiln cooling chamber, the kiln is placed for 12h or more, and then the kiln is controlled to be heated to 120℃, and the temperature is maintained for 5.5h, and then the kiln is cooled to room temperature;

[0063] Step four, the roughcast after curing is sent into a thickness setting device for thickness setting, and then inspected, cut into the required size, and then placed in a natural environment for air drying for 12h or more, and then packaged and stored in a warehouse.

[0064] Comparative Example 1

[0065] The raw material composition is basically the same as that of Example 3, and the difference lies in that the calcined kaolin in the raw material composition is replaced by conventional unmodified kaolin.

[0066] Comparative Example 2

[0067] It is a commercially available artificial stone of the same specification.

[0068] The artificial stones prepared in Examples 1-3 and Comparative Examples 1-3 are tested under the same test conditions, and the following data are obtained:

[0069] Table 1: Test data table of each example

[0070] Test item Mori hardness Flexural strength / MPa Bending strength / MPa Glossiness Example 1 7.0 46.8 19.6 73 Example 2 7.1 45.3 19.8 73 Example 3 7.3 47.5 20.3 75 Comparative Example 1 6.2 38.6 16.2 65 Comparative Example 2 6.0 36.2 14.5 68

[0071] As can be seen from the above table, the artificial stone prepared in the application has excellent strength and surface gloss, wherein the diatomite, expanded vermiculite powder and sepiolite powder with porous structure are introduced into the raw material to cooperate with the calcined kaolin, so that the prepared artificial stone has the characteristics of light weight, and the introduced calcined kaolin is modified by a specific process, which can effectively enhance the strength and surface gloss of the artificial stone.

[0072] The application limits the raw material composition of the artificial stone and the specific preparation method, so that the prepared artificial stone has good surface gloss, irregularly distributed color particles of different sizes, bright and rich color, good decoration effect, and high overall strength of the artificial stone, which is not easy to crack and deform, so as to meet the use requirements of the artificial stone.

[0073] The above is only a preferred embodiment of the application, and therefore cannot limit the scope of the application, that is, equivalent changes and modifications made according to the patent scope and content of the specification should still be within the scope of the application.

Claims

1. A lightweight artificial stone for building decoration prepared based on calcined kaolin, characterized in that: The raw materials include the following parts by weight: 40-50 parts aggregate, 25-30 parts calcined kaolin, 10-12 parts diatomaceous earth, 5-8 parts expanded vermiculite powder, 6-10 parts sepiolite powder, 15-20 parts resin, 3-5 parts dispersant, 5-10 parts colorant, and 6-8 parts reinforcing agent. The aggregate is mullite scraps, and the reinforcing agent is composed of montmorillonite and fly ash in a weight ratio of 1:0.5-0.

6. Its preparation method includes the following steps: Step 1: Weigh and mix the aggregate, calcined kaolin, diatomaceous earth, expanded vermiculite powder, sepiolite powder, dispersant, colorant, and reinforcing agent by weight, add 5-7% water by weight of the mixture, mix and stir evenly, then add the resin and continue to stir and mix evenly. Step 2: Pour the mixture from Step 1 into the mold, vibrate and spread it evenly, and then send it into the pressing equipment to press and shape it. Step 3: After pressing, demold the blank and send it into a kiln preheated to 180-200℃. After cooling to room temperature in the kiln, place it in the kiln for more than 12 hours. Then, control the kiln temperature to rise to 115-125℃ and keep it warm for 5-6 hours. Then, cool it to room temperature in the kiln again. Step 4: Send the cured blank into the thickness calibrating equipment for thickness calibration, then inspect it, cut it into the required size, and then air dry it in a natural environment for more than 12 hours before packaging and storing it in the warehouse. The preparation method of the calcined kaolin is as follows: First, kaolin is fed into a kiln and calcined at 980-1020℃ for 5-6 hours, then cooled to room temperature, water is added, and the mixture is stirred to form a slurry; then, 1-2% of the weight of the kaolin is added as a modifying liquid, and the mixture is stirred for 3-4 hours, followed by centrifugation; the separated kaolin is fed back into the kiln and calcined at 90-110℃ for 1-2 hours, then cooled to room temperature to obtain the calcined kaolin. The modified liquid is composed of vinyltrimethoxysilane, ethyl acetate, and lauric acid diethanolamide in a volume ratio of 1:0.2-0.3:0.12-0.

15.

2. The lightweight architectural decorative artificial stone prepared based on calcined kaolin according to claim 1, characterized in that: The color particles consist of the following raw materials in parts by weight: 3-5 parts pigment, 30-40 parts quartz, 10-12 parts limestone, 15-18 parts potassium feldspar, 5-8 parts borax, 3-5 parts spodumene, 8-12 parts illite, 0.5-1 parts titanium dioxide, and 2-3 parts zinc oxide.

3. The lightweight architectural decorative artificial stone prepared based on calcined kaolin as described in claim 2, characterized in that: The preparation method of the color particles is as follows: Quartz, limestone, potassium feldspar, borax and spodumene are first put into a melting furnace and melted into blocks at 1180-1230℃. After the blocks are quenched with water, they are mixed with pigment, illite, titanium dioxide and zinc oxide, crushed and wet-ball milled to obtain a slurry. Then the slurry is sieved, iron is removed and spray granulated to obtain the color particles.

4. The lightweight artificial stone for building decoration prepared based on calcined kaolin as described in claim 1, characterized in that: The color particles include 30-40 parts of 1-3mm color particle blocks, 30-40 parts of 3-6mm color particle blocks, and 10-20 parts of 8-10mm color particle blocks.