CN112847739B

CN112847739B - Large-area mixed particle three-dimensional cloth stone-like brick and preparation method and equipment thereof

Info

Publication number: CN112847739B
Application number: CN202110063982.9A
Authority: CN
Inventors: 张松竹; 吴文武; 尹伟; 陈琴云; 李万平
Original assignee: Guangdong Qingyuan Monalisa Building Ceramic Co ltd
Current assignee: Guangdong Qingyuan Monalisa Building Ceramic Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-12
Anticipated expiration: 2041-01-18
Also published as: CN112847739A

Abstract

The invention discloses a large-area mixed particle three-dimensional cloth stone-like brick and a preparation method and equipment thereof. The preparation method comprises the following steps: polishing the toner with different colors, and then dropping the toner into a stirring cylinder for stirring; the mixed toner after stirring falls into a trough formed on a particle conveying belt provided with a height limiting trough, so that the mixed toner is uniformly accumulated on the particle conveying belt through a height limiting plate, passes through a rolling belt arranged on the particle conveying belt at a constant speed and is pressed into a sheet-shaped powder block; cutting the flaky powder blocks by a cutter arranged at the tail end of the conveying belt to prepare granules; the particles pass through the vibrating flat plate, are driven by a plurality of vibrators to vibrate the particles in the material groove of the particle distributor to the tail end of the vibrating flat plate, and are sprinkled on the powder layer distributed on the large belt of the skip car; and (3) conveying the powder layer with the distributed particles into a die frame of a molding press, pressing and forming into a blank, and then drying and sintering the blank to obtain the large-area mixed particle three-dimensional distributed stone-like brick.

Description

Large-area mixed particle three-dimensional cloth stone-like brick and preparation method and equipment thereof

Technical Field

The invention relates to the technical field of architectural ceramics, in particular to a large-area mixed particle three-dimensional cloth stone-like brick and a preparation method and equipment thereof.

Background

The natural stone is widely applied to the field of decoration due to rich textures, and particularly, the natural stone with massive large particles has a prominent surface stereo effect formed by bright and colorful particles, so that the natural stone is more popular with people in the field of modern decoration. Because natural stone is a non-renewable resource, after years of development, the storage capacity is less and less, and most of large grain textures existing in the natural stone are generated through crystallization, so that cracks with different degrees exist in the stone due to grain boundary stress, the strength is lower, the stone is very easy to break in the cutting process, and the decoration difficulty is high. The ceramic product with the effect of imitating the texture of the large-grained stone on the market has the defects of single color, small grain diameter (less than 10 mm) and small proportion of grains in the whole brick due to the limitation of the production process. And the product which is prepared by jetting large-particle patterns on the green brick has a decorative effect which can not be compared with that of natural stone completely, and has a thin ink-jet layer, a surface which can not be processed deeply and a narrow application range. For example, deep processing such as chamfering or grooving may expose the base blank, and the base blank may not be able to conform to the pattern on the surface, failing to achieve the full body effect.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a large-area mixed particle three-dimensional cloth stone-like brick and a preparation method and equipment thereof. On the basis of keeping the colorful particles, the invention solves the defects of single particle size and less particle proportion of the product by changing the particle granulation and distribution modes, and keeps the effects of different sizes and colorful natural stone particles. The preparation method provided by the invention improves the technical level of preparation of large-area mixed particle stone-like bricks, and the obtained product not only can be deeply processed on the surface like natural stone, but also has the simulation whole-body effect and high-strength ceramic characteristic superior to stone.

In a first aspect, the invention provides a preparation method of a large-area mixed particle three-dimensional cloth stone-like brick. The preparation method comprises the following steps:

polishing the toner with different colors, and then dropping the toner into a stirring cylinder for stirring;

the mixed toner after stirring falls into a trough formed on a particle conveying belt provided with a height limiting trough, so that the mixed toner is uniformly accumulated on the particle conveying belt through a height limiting plate, passes through a rolling belt arranged on the particle conveying belt at a constant speed and is pressed into a sheet-shaped powder block;

cutting the flaky powder blocks by a cutter arranged at the tail end of the conveying belt to prepare granules;

the particles pass through the vibrating flat plate, are driven by a plurality of vibrators to vibrate the particles in the material groove of the particle distributor to the tail end of the vibrating flat plate, and are sprinkled on the powder layer distributed on the large belt of the skip car;

and (3) conveying the powder layer with the distributed particles into a die frame of a molding press, pressing and forming into a blank, and then drying and sintering the blank to obtain the large-area mixed particle three-dimensional distributed stone-like brick.

The preparation method is different from the traditional production process of uniformly superposing and briquetting single-color powder or multi-color powder and then crushing the powder in a granulation mode and the method of controlling the particle discharging amount by using a roller, and the large-size and high-area-proportion flaky particles are distributed in the green body layer in a vibration mode, so that the through stone grain effect can be formed, the deep processing of grooving, beveling and the like of the stone-like brick is facilitated, and the decorative surface of the stone-like brick is greatly enriched.

Preferably, the main shaft of the material cutter is provided with cutting nails with different lengths, and the cutting nails can be formed into at least two lengths: the long nail is formed into a length capable of completely penetrating the flaky powder block and is used for cutting the flaky powder block in a large area; the short spikes are formed not to penetrate the length of the patch completely, but can damage the integrity of the patch.

Preferably, the proportion of the long nails in the cutting nails is 20-30%.

Preferably, the falling speed of the particles on the vibration flat plate is controlled by controlling the vibration frequency of a vibrator for vibrating the flat plate, so that the blanking amount of the particles is controlled; the distribution of the particle size is controlled by controlling the vibration intensity of a vibrator for vibrating the flat plate.

Preferably, the proportion of the particles with the particle size of more than 2mm in the whole brick surface of the stone-like brick is more than 70%.

Preferably, the particle size of the particles and the proportion of the corresponding particles in the whole brick surface of the stone-like brick are as follows: 40-50 mm: 6-15%; 20-40 mm: 15-30%; 10-20 mm: 10-25%; 2-10 mm: 20-50%. In some technical schemes, the particle size of the particles and the proportion of the corresponding particles in the whole brick surface of the stone-like brick are as follows: 40-50 mm: 10-15 percent; 20-40 mm: 20-30%; 10-20 mm: 10-20%; 2-10 mm: 40-50%.

Preferably, the toner comprises a base powder and a colorant; preferably, the chemical composition of the base powder comprises: by mass percentage, the loss on ignition is 3.0-3.5%, and SiO is₂ 68.0～70.0％，Al₂O₃17.80-19.0%, 1-2% alkaline earth metal oxide, 4-7% alkali metal oxide.

Preferably, the feeding speed of the single-color toners with different color combinations to the stirring cylinder is controlled through a preset feeding program so as to control the feeding amount.

In a second aspect, the invention provides a large-area mixed particle three-dimensional cloth stone-like brick prepared by any one of the methods.

In a third aspect, the invention provides equipment for preparing a large-area mixed particle three-dimensional cloth stone-like brick. The preparation apparatus includes:

a mixing tank for mixing the powder;

a trough of a height limiting plate is arranged below a discharge hole of the stirring cylinder;

the conveying belt is arranged below the material groove and used for conveying mixed powder;

a rolling belt disposed above the conveyor belt downstream of the agitator;

a cutter arranged above the conveying belt at the downstream of the rolling belt;

and the particle distributor is arranged at the downstream of the material cutter and uniformly sprays particles on the powder layer distributed on the large belt of the material trolley by vibration.

Preferably, the particle distributor is provided with a trough for receiving particles cut by the cutter;

the bottom of the trough is provided with a vibrating flat plate;

the vibrators are arranged on four feet of the vibrating flat plate.

Drawings

FIG. 1 is a flow chart of the preparation of the large-area mixed particle three-dimensional cloth stone-like brick of the present invention;

FIG. 2 is a schematic illustration of a pelletizing structure according to the invention; 1: stirring cylinder, 2: height limiting plate, 3: rolled belt, 4: a material cutter 5: a particle conveyor;

FIG. 3 is a schematic view of a fabric structure according to the present invention; 1: stirring cylinder, 2: height limiting plate, 3: rolled belt, 4: material cutter, 5: particle conveyer belt, 6: particle distributor chute, 7: vibrating plate, 8: cloth big belt.

Detailed Description

The present invention is further illustrated by the following examples, which are to be understood as merely illustrative of, and not restrictive on, the present invention. Unless otherwise specified, each percentage means a mass percentage.

The preparation method of the large-area mixed particle three-dimensional cloth stone-like brick of the invention is exemplarily described below with reference to fig. 1.

Preparing a base powder. The formula of the base powder comprises: according to mass percent, ultra-white clay: 15-20% of talc: 1.5-2.5% of bentonite: 1-5% of potassium sand: 20-35% of sodium stone powder: 10-20% of medium-temperature sand: 10-25%, potassium feldspar: 10 to 25 percent.

Chemical composition (wt.%) of the raw materials in the base powder

In the above table "-" means "the corresponding chemical composition was not measured".

Some embodimentsThe chemical composition of the base powder may include: by mass percentage, the loss on ignition is 3.0-3.5%, and SiO is₂ 68.0～70.0％，Al₂O₃17.80-19.0%, 1-2% alkaline earth metal oxide, 4-7% alkali metal oxide. Preferably, the chemical composition of the base powder may include: calculated by mass percentage, the loss on ignition is 3.0-3.5 percent, and SiO₂ 68.0～70.0％，Al₂O₃ 17.80～19.0％，Fe₂O₃ 0.30～0.35％，TiO₂ 0.05～0.10％，CaO 0.40～0.50％，MgO 0.70～0.82％，K₂O 2.95～3.20％，Na₂O 2.50～2.90％。

The base powder can be prepared by the following steps: weighing the raw materials according to the formula composition of the basic powder, ball-milling, removing iron, and sieving to form the basic formula slurry.

Toner is prepared. The toner includes a base powder and a colorant. The pigment includes but is not limited to one or more of orange, green, praseodymium yellow, orange red, blank black and the like. And uniformly stirring the pigment and the basic formula slurry to form mixed color paste. The mixed color paste is dried, such as by spray drying, to form a toner powder. In some embodiments, the colorant may also be in the form of a slurry that is mixed with the base formulation slurry. The color of the toner can be adaptively changed by adjusting the type and the dosage of the toner according to actual requirements.

For example, in a specific embodiment, toners 1-4 are prepared as follows:

the formula of the toner 1 is as follows: the base formula slurry and color paste 1 (0.01-0.02 wt% of orange);

the formula of the toner 2 is as follows: base formula slurry + color paste 2 (orange 0.5-1.0 wt% + fruit green 0.02-0.30 wt% + praseodymium yellow 0.2-0.4 wt%);

the formula of the toner 3 is as follows: base formula slurry and color paste 3 (0.2-1.0 wt% of orange red);

the formula of the toner 4 is as follows: the base formula slurry and the color paste 4 (0.5-1.0 wt% of orange, 0.02-0.05 wt% of orange, 0.03-0.05 wt% of green black and 0.01-0.04 wt% of fruit green).

And (4) preparing particles. As shown in fig. 2, toner of different colors is ground and then dropped into a mixing tank 1 equipped with mixing blades via a small feeding belt (not shown) at a predetermined feeding speed to be mixed. The number of the toners in the present embodiment may be two to four, but is not limited thereto. The mixed toner (for example, toner 1-4) after stirring falls into a trough formed on a particle conveyer belt 5 (also referred to as "conveyer belt 5"), and since the conveyer belt 5 is provided with a height limiting plate 2, the mixed toner passes through the height limiting plate 2 and is uniformly stacked on the conveyer belt 5, passes through a rolling belt 3 arranged on the conveyer belt 5 at a constant speed, and is pressed into a sheet-like powder block (also referred to as "sheet-like powder layer") with certain thickness and strength. The toner falls and is stirred by the stirrer at the same time, and the mixing of the toners has non-uniformity, so that the toners in the sheet-like powder block are not uniformly distributed, and the cut sheets can be used for producing particles with rich colors. In this regard, a conventional granulating apparatus or granulating method is to simply stack and/or extrude toner layers after a single toner or multiple toners are discharged from a roller to form a monotonous sandwich structure. The toner of the invention also comprises a stirring step of different toners before being discharged to the conveying belt for stacking, so that various toners are mixed to form flaky toner blocks with rich colors and staggered color patterns.

And controlling the particle size of the particles. At the end of the horizontal conveyor belt 5 a cutter 4 is mounted. The main shaft of the material cutter 4 is provided with material cutting nails with different lengths. The blanking nail can be formed into at least two lengths; the long nail is formed into a length capable of completely penetrating the flaky powder block and is used for cutting the flaky powder block in a large area; the short nail is formed in a length which does not completely penetrate through the sheet-like powder piece, but can damage the integrity of the sheet-like powder piece so as to lead the sheet-like powder piece to be cracked into particles with different sizes in the subsequent process due to different conditions such as collision, vibration and the like. More specifically, each blanking nail can be mounted on the main shaft at different angles, for example, in the range of 70-90 degrees. The cutting nails can be randomly and disorderly arranged at different intervals or in different arrangements, and the long nails and the short nails in the cutting nails can be uniformly distributed on the main shaft. The proportion (number ratio) of the long nails to the blanking nails can be 20-30%. Otherwise, the flaky particles can be relatively finely divided, which is not favorable for forming large stone-like grains. For example, a long staple may be 2mm longer than a short staple. In addition, the material cutter 4 and the conveyer belt 5 rotate oppositely, so that the size of particles after material cutting can be controlled by controlling the speed difference between the conveyer belt and the material cutter, and the damage degree of each material cutting nail to the sheet-like powder block can be further adjusted by controlling the height of the material cutter 4 relative to the conveyer belt 5. Therefore, based on the mutual matching of the structures, the flaky powder block can be cut into shapes with different particle sizes and controllable sizes on the whole, so that the particle sizes are multilevel and the cutting shapes are diversified. The mounting method and the specific structure of the present embodiment are not limited to the above-mentioned examples, and may be adjusted adaptively according to actual needs and site conditions, as long as the purpose of the irregular cutting can be achieved without departing from the scope of the invention.

In the preparation process of the particles, the particle size of the flaky particles can be adaptively controlled by controlling the strength of the flaky powder block formed by pressing and the slicing speed.

And (4) particle distribution. As shown in fig. 3, the base of the particle conveyor belt 5 (also called "conveyor belt") of the granulator is located on the particle distributor platform, and the base is driven by the transmission shaft in the bracket to move left and right in the horizontal plane, so that the particles cut by the cutter 4 further fall into the particle distributor trough 6 unevenly, and the color is changed more. Granule distributing device silo 6 is located 5 downstream side end of conveyer belt and installs in vibrations dull and stereotyped 7 top, vibrations dull and stereotyped 7 is installed in the big belt 8 top of skip and disposes with the form slope of certain angle with the horizontal direction, this angle uses the granule to fall on it can not quick landing as the limit, install the electromagnetic shaker in its four feet, the granule shakes to the dull and stereotyped 7 end of vibrations that is located the lower from granule distributing device silo 6 that is located the higher under the vibrations of electromagnetic shaker, the granule falls behind from vibrations dull and stereotyped 7, spill on the powder layer that the big belt 8 of skip was distributed. The powder layer is a green body bottom layer formed by mixing green body powder and toner. The powder layer can be distributed by using a traditional distribution method, including but not limited to grid distribution, belt distribution and the like. Thus, by controlling the vibration frequency of the vibrator vibrating the plate 7, the falling speed of the particles on the vibrating plate 7 can be controlled, thereby controlling the amount of the particles to be discharged. The particle size distribution can be controlled by controlling the vibration intensity of the vibrator vibrating the plate 7. More specifically, by the control, such as increasing the vibration frequency and increasing the falling speed and the number of the particles, the proportion of particles with a size of more than 2mm in the whole ceramic tile can be increased by more than 70%, so that the problem of small proportion of particles on the surface of the traditional particle-decorated ceramic tile is effectively solved. In some embodiments, the particle size of the particles and the proportion of the corresponding particles to the whole brick surface of the stone-like brick are as follows: 40-50 mm: 6-15%; 20-40 mm: 15-30%; 10-20 mm: 10-25%; 2-10 mm: 20-50%, which is beneficial to effectively solving the problem that the particle size and the color are too single. Further preferably, the particle size of the particles and the proportion of the corresponding particles in the whole brick surface of the stone-like brick are as follows: 40-50 mm: 10-15%; 20-40 mm: 20-30%; 10-20 mm: 10-20%; 2-10 mm: 40-50%.

Most of the traditional particle texture stone-like bricks are coated with particles in a roller spreading mode. In the process, the discharge amount of the particles is controlled by the rotating speed of the roller, the height of the roller and the outlet of the hopper for containing the particles and the like. However, in the development process, it is found that when the large granules formed by the sheet powder block of the present invention are distributed by using a roller distribution method, the large granules are blocked at the outlet of the roller and the hopper containing the granules and cannot fall down or be crushed by extrusion, so that large granules of simulated stone texture cannot be formed.

Shaping (which may also be referred to as "forming"). And (3) conveying the powder layer with the distributed particles into a die frame of a die press through a material conveying belt, and pressing and forming the powder layer into a blank. Pressing can be carried out in a direct beating mode. And a mould with concave-convex textures can be selected to increase the particle and layering sense of the surface of the product so as to achieve the texture and the charm of the natural stone.

And drying and sintering the obtained blank to obtain the stone-like brick. The firing temperature can be 1180-1200 ℃, and the firing period can be 55-65 min.

The invention has the beneficial effects that: through the progressive cooperation of the granulation mode and the material distribution mode, the mixed particles with different diameters and rich color change are added into the series of products, the stereoscopic impression of the products is increased, and the perfect fusion of the particles and the powder layer is completely close to the pattern of the natural stone. The problem of the granule that natural stone exists split, intensity is low, very easily broken in the cutting course of working is solved, still overcome the general granule particle diameter of current large granule imitative stone brick and little defect, kept natural stone size different, rich and varied particle effect, overcome the product surface of this pattern effect can not carry out deep-processing's technical barrier.

The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing description are intended to be included within the scope of the invention. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below. In the case where no specific explanation is given, the term "stirring speed" means "motor frequency for controlling stirring".

Example 1

(1) Preparing a flaky powder layer for preparing particles: after the toner is polished, the feeding speed (1: 10Hz, 2: 30Hz, 3: 20Hz and 4: 40Hz) is set according to a program by a feeding small belt and falls into a stirring cylinder (the stirring speed is 10-20 Hz), the stirred powder falls into a trough (the outlet is 2cm high) provided with a height limiting plate, so that the mixed toner is accumulated on a conveying belt (the rotating speed is 30Hz), and the mixed toner is pressed into a flaky powder block with the thickness of 3mm through a rolling belt (the rotating speed is 30Hz) arranged on the conveying belt at a constant speed.

The toner used in example 1 contained a colorant in a mass percentage (wt%) of the base formulation

	Orange peel	Fruit green	Praseodymium yellow	Exocarpium Citri rubrum	Base black
						Toner
1	0.15～0.02	—	—	—	—
						Toner 2	0.83～0.90	0.03～0.05	0.25～0.30	—	—
Toner 3	—	—	—	0.33～0.45	—
						Toner 4	0.55～0.62	0.02～0.03	—	0.03～0.05	0.04～0.05

(2) Preparing particles: setting the distance between the material cutter and the conveyer belt to be 1mm, and the rotating speed of the material cutter to be 35Hz, cutting the flaky powder blocks, and making into granules. The particle size of the prepared particles is 2-50 mm.

(3) Material distribution: the vibration frequency of four vibrators of the vibration flat plate is controlled to be 15Hz, and the four vibrators are uniformly sprinkled on the powder layer distributed on the large belt of the skip car. The particle size distribution of the vibrated particles is 40-50 mm: 10-12%; 20-40 mm: 25-30%; 10-20 mm: 16-20%; 2-10 mm: 43-50%. The particles with the diameter of more than 2mm account for more than 70 percent of the surface of the whole brick.

(4) And selecting a concave-convex texture die, conveying the distributed material into a die frame, and performing compression molding in a positive beating mode to obtain a blank body. The chemical composition of the blank comprises: by mass percent, 3.3 percent of loss on ignition and SiO₂ 69.5％，Al₂O₃ 18.5％，Fe₂O₃ 0.32％，TiO₂ 0.1％，CaO 0.44％，MgO 0.75％，K₂O 2.95％，Na₂O 2.86％。

(5) And drying the obtained blank and then sintering to obtain the stone-like brick. The sintering temperature is 1190-1200 ℃, and the sintering period is 58-62 min.

Example 2

(1) Preparation of a flaky powder layer for preparing particles: after the toner is polished, the feeding speed (1: 15Hz, 2: 33Hz, 3: 28Hz and 4: 35Hz) is set according to a program by a small feeding belt and falls into a stirrer (the stirring speed is 15-20 Hz), the stirred toner falls into a trough provided with a height limiting plate (the outlet is 3cm high), the mixed toner is stacked on a conveying belt (the rotating speed is 25Hz) through the height limiting groove, and the mixed toner is pressed into a sheet-shaped toner layer with the thickness of 4mm through a rolling belt (the rotating speed is 25Hz) arranged on the conveying belt at a constant speed.

In the toner used in example 2, the colorant was contained in the base formulation in a percentage by mass (wt%)

(2) Preparing particles: and setting the distance between the material cutter and the conveying belt to be 2mm and the rotating speed to be 25Hz, and cutting the flaky powder layer to prepare particles. The particle size of the prepared particles is 2-50 mm.

(3) Material distribution: the vibration frequency of four vibrators of the vibration flat plate is controlled to be 15Hz, and the four vibrators are uniformly sprinkled on the powder layer distributed on the large belt of the skip car. The particle size distribution of the vibrated particles is 40-50 mm: 6-10%; 20-40 mm: 15-20%; 10-20 mm: 15-25%; 2-10 mm: 20-30%. The particles with the diameter of more than 2mm account for more than 60 percent of the surface of the whole brick.

(4) And selecting a concave-convex texture die, conveying the distributed material into a die frame, and performing compression molding in a positive beating mode to obtain a blank body. The chemical composition of the blank comprises: by mass percent, 3.5 percent of loss on ignition and SiO₂ 68.4％，Al₂O₃ 19.0％，Fe₂O₃ 0.30％，TiO₂ 0.10％，CaO 0.48％，MgO 0.68％，K₂O 3.1％，Na₂O 2.90％。

(5) And drying the obtained blank and then sintering to obtain the stone-like brick. The firing temperature is 1190-1200 ℃, and the firing period is 58-62 min.

Claims

1. A preparation method of a large-area mixed particle three-dimensional cloth stone-like brick is characterized by comprising the following steps:

after the toner with different colors is polished, blanking, and dropping into a stirring cylinder for stirring, wherein the dropping of the toner and the stirring of a stirrer are simultaneously carried out;

the mixed toner after stirring falls into a trough formed on a particle conveying belt provided with a height limiting trough, so that the mixed toner is uniformly accumulated on the particle conveying belt through a height limiting plate, passes through a rolling belt arranged on the particle conveying belt at a constant speed and is pressed into flaky powder blocks with rich colors and staggered color grains;

cutting the flaky powder blocks by a cutter arranged at the tail end of the conveying belt to prepare particles; be equipped with the blank nail that differs in size on the main shaft of blank ware, the blank nail can form two kinds of lengths at least: the long nail is formed into a length which completely penetrates through the flaky powder block and is used for cutting the flaky powder block in a large area; the short nails are formed to a length that does not completely penetrate the sheet-like powder clumps and destroy the integrity of the sheet-like powder clumps;

the particles pass through the vibrating flat plate, are driven by a plurality of vibrators to vibrate the particles in the material groove of the particle distributing device to the tail end of the vibrating flat plate, and are sprayed on a powder layer distributed on a large belt of a skip car; controlling the falling speed of the particles on the vibrating plate by controlling the vibrating frequency of a vibrator of the vibrating plate so as to control the blanking amount of the particles; controlling the particle size distribution of the particles by controlling the vibration intensity of a vibrator for vibrating the flat plate;

and (3) conveying the powder layer with the distributed particles into a die frame of a die press, pressing and forming into a blank, and then drying and sintering the blank to obtain the large-area mixed particle three-dimensional distributed stone-like brick, wherein the proportion of particles with the particle size of more than 2mm in the whole brick surface of the stone-like brick is more than 70%.

2. The method according to claim 1, wherein the ratio of the long nails to the blanking nails is 20 to 30%.

3. The preparation method of claim 1, wherein the particle size of the particles and the proportion of the corresponding particles in the whole brick surface of the stone-like brick are as follows: 40-50 mm: 6-15%; 20-40 mm: 15-30%; 10-20 mm: 10-25%; 2-10 mm: 20 to 50 percent.

4. The production method according to claim 1, wherein the toner includes a base powder and a colorant; the chemical composition of the base powder comprises: calculated by mass percentage, the loss on ignition is 3.0-3.5 percent, and SiO₂68.0～70.0%，Al₂O₃17.80-19.0%, 1-2% alkaline earth metal oxide, 4-7% alkali metal oxide.

5. A large-area mixed particle three-dimensional cloth stone-like brick obtained by the preparation method of any one of claims 1 to 4.

6. The utility model provides a preparation equipment of three-dimensional cloth imitative stone brick of large tracts of land mixed particle which characterized in that includes:

a mixing tank for mixing the powder;

a rolling belt disposed above the conveyor belt downstream of the agitator;

a cutter arranged above the conveying belt at the downstream of the rolling belt; be equipped with the blank nail that differs in size on the main shaft of blank ware, the blank nail can form two kinds of lengths at least: the long nail is formed into a length which completely penetrates through the flaky powder block and is used for cutting the flaky powder block in a large area; the short nails are formed to a length that does not completely penetrate the sheet-like powder clumps and destroy the integrity of the sheet-like powder clumps;

the particle distributor is arranged at the downstream of the material cutter and uniformly sprays particles on the powder layer distributed on the large belt of the material trolley through vibration; the particle distributing device is provided with a material groove for receiving the particles cut by the material cutter; the bottom of the trough is provided with a vibrating flat plate; the vibrators are arranged on four feet of the vibrating flat plate; controlling the falling speed of the particles on the vibrating flat plate by controlling the vibrating frequency of a vibrator for vibrating the flat plate, thereby controlling the blanking amount of the particles; the particle size distribution of the particles is controlled by controlling the vibration intensity of a vibrator for vibrating the flat plate.