A basalt fiber ecological permeable brick and its preparation method

Abstract

The present invention provides basalt fiber ecological permeable bricks and a preparation method thereof, relating to the technical field of permeable bricks. The preparation method comprises the steps of making sand from waste basalt fiber, mixing it with chopped basalt fibers, dry-mixing it with cement, natural river sand, and natural basalt stones to obtain a prefabricated material, delivering the prefabricated material to a brick-making machine for vibration molding to obtain a base material, and drying it in a drying workshop. The present invention utilizes sand-making equipment to reuse waste fibers while saving waste fiber processing costs. Furthermore, by adding a predetermined proportion of chopped basalt fibers, the resulting basalt fiber ecological permeable bricks comply with national green environmental protection policies, are eco-friendly, and ensure product quality (such as splitting and compressive strength) meets industry standards.

Description

Technical Field

[0001] The present invention relates to the technical field of permeable bricks, and in particular to a basalt fiber ecological permeable brick and a preparation method thereof. Background Art

[0002] Permeable bricks are a new environmentally friendly building material designed to address urban surface hardening, create a high-quality natural living environment, and maintain urban ecological balance. Made from slag waste and ceramic waste, they are environmentally friendly products that maintain ground permeability and moisture retention, and offer high strength, cold and weather resistance, and noise reduction. However, existing permeable bricks are formed using a crushed stone matrix bonded and cured with various organic or inorganic adhesives. While achieving permeability, their overall structural strength is limited, with technical issues such as splitting and compressive strength failing to meet industry standards.

[0003] Basalt fiber is a continuous fiber made by melting basalt stone at high temperatures and then drawing it at high speed through a platinum-rhodium alloy drawing plate. It is composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide, and titanium dioxide. Basalt continuous fiber not only has high strength but also exhibits excellent properties such as electrical insulation, corrosion resistance, and high-temperature resistance. It also has minimal environmental pollution, making it a truly green and environmentally friendly material. my country has designated basalt fiber as one of the four major fiber categories (along with carbon fiber, aramid, ultra-high molecular weight polyethylene, and basalt fiber) for development, and has achieved industrialized production.

[0004] The basalt fiber drawing process inevitably produces a large amount of waste fiber. This waste fiber, still primarily composed of silica, is environmentally friendly, but after recycling, it cannot be incinerated for power generation or reused for secondary processing. The typical disposal method is landfill, where it is allowed to degrade naturally. However, the cost of landfilling waste fiber remains high year after year, and it violates national environmental protection policies.

[0005] Currently, basalt fiber waste comes in a variety of forms, including long soft filaments, long hard filaments, long flocs, irregular black glassy shapes, and black glassy droplets. Due to the diverse shapes, hardness, and length of these waste fibers, directly processing them into usable semi-finished products (i.e., waste fiber sand) is extremely difficult, and there is no commercially available equipment to process this material. Manually sorting and categorizing these waste fibers and then processing them using different production equipment would be prohibitively expensive and time-consuming, which is one reason why the industry has yet to effectively handle the waste generated during the basalt fiber drawing process.

[0006] Therefore, based on the concept of turning waste into treasure and the excellent performance of basalt fiber, how to process these waste fibers so that they can be used as raw materials for preparing permeable bricks to achieve waste recycling is the main research and development direction and idea in the future. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the present invention provides a basalt fiber ecological permeable brick and a preparation method thereof to solve the problems that the overall structural strength of the existing permeable bricks is limited and the splitting and compressive strengths do not meet industry standards.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A method for preparing basalt fiber ecological permeable bricks comprises the following steps:

[0010] S1. Collecting waste fibers generated during the basalt fiber drawing process and processing them in a sand making device to obtain waste fiber sand;

[0011] S2. Put the waste silk sand into the mixing equipment, and add the predetermined proportion of basalt chopped fibers and mix them evenly;

[0012] S3, adding cement, natural river sand, and natural basalt stones to a mixing device for dry mixing to obtain prefabricated materials;

[0013] S4, sending the prefabricated material to the interior of the brick making machine for vibration molding to obtain a base material;

[0014] S5. Covering the surface of the base material with a wear-resistant layer or a color layer, vibrating and extruding the base material, and then demoulding the base material to obtain a brick;

[0015] S6. The bricks are conveyed to the drying workshop via a belt for drying, and the finished basalt fiber ecological permeable bricks are obtained and shipped out.

[0016] In one embodiment disclosed in the present application, the sand making equipment described in step S1 includes the following arranged in sequence:

[0017] Belt conveyor, feed hopper, processing host, high-pressure fan, feeding pipe, discharge hopper and dust collector;

[0018] Among them, a vibrating screen plate for screening fiber waste and vitreous waste is provided at the bottom of the feed hopper, and the vibrating screen plate has two working states: closed and open. When the vibrating screen plate is in the closed state, the fiber waste is intercepted by its own vibration, and the vitreous waste can pass through the sieve holes of the vibrating screen plate and leak into the processing host for processing; when the vibrating screen plate is in the open state, the intercepted fiber waste falls freely into the processing host for processing.

[0019] In one embodiment disclosed in the present application, the processing host includes a frame, a box and a host body, the box is fixedly mounted on the frame, and has a processing area and idle areas on both sides of the processing area, wherein the processing area is located directly below the feed hopper;

[0020] The main body includes grinding teeth and shredding teeth that are arranged in the box and rotate coaxially. The grinding teeth and shredding teeth can be switched by the push of a hydraulic mechanism to enter the processing area to crush the glass waste and fiber waste respectively.

[0021] In one embodiment disclosed in the present application, the fiber waste includes long fiber soft filament waste, long fiber hard filament waste and long fiber flocculent waste;

[0022] The vitreous waste silk includes irregular black vitreous waste silk and black vitreous teardrop-shaped waste silk.

[0023] In one embodiment disclosed in the present application, the waste silk sand in step S1 is mainly composed of a mixture of small sand-like particles, medium-sized gravel-like particles and micro-fibrous particles;

[0024] The proportion of the sand-like small particles is 80% to 90%, the proportion of the stone-like medium-sized particles is 10% to 15%, and the proportion of the microfibrous particles is 5% to 10%.

[0025] In one embodiment disclosed in the present application, the basalt chopped fibers described in step S2 use a hydrophilic sizing agent, with a drawing range of 17 to 22 μm and a chopped range of 20 to 30 mm. The baking process has a temperature range of 90 to 140° C. and a baking time of 6 hours.

[0026] In one embodiment disclosed in the present application, the length of the chopped basalt fibers is 20 mm, and the predetermined proportion of the added basalt fibers is 0.3% of the total weight of the permeable brick.

[0027] A basalt fiber ecological permeable brick is prepared by adopting the preparation method of the basalt fiber ecological permeable brick.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the sand making equipment, the waste silk is reused, while saving the waste silk processing cost. By adding a predetermined proportion of basalt chopped fibers, the prepared basalt fiber ecological permeable bricks comply with the national green environmental protection policy, are eco-friendly, and ensure that the product quality (splitting, compressive strength, etc.) meets industry standards.

[0030] 2. The sand making equipment screens the waste silk through the vibrating screen plate without manual sorting, and switches the grinding teeth and shredding teeth to crush the waste silk of different shapes to produce waste silk sand, making waste silk sand making easier and reducing production costs.

[0031] 3. The length of basalt chopped fibers is 20 mm, and they are added at a predetermined ratio of 0.3% of the total weight of the permeable brick. They are easier to combine with cement. After mixing, the two ends of a single group of fibers will appear dandelion-shaped, and they can be well clustered in the base material to grasp the pebbles and other mixtures therein. They play a good skeleton role in the brick body, which can significantly improve the toughness and bending and tensile properties of the brick body, and enhance the overall strength of the brick body. At the same time, it increases the porosity and water permeability, and is consistent with the thermal expansion coefficient of cement, effectively preventing the cracking of cement in the brick body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 This is a schematic diagram of the main structure of the sand making equipment involved in the present invention;

[0034] Figure 2 This is a schematic diagram of the top view of the sand making equipment involved in the present invention;

[0035] Figure 3 It is a partial structural schematic diagram of the sand making equipment involved in the present invention from the right side;

[0036] Figure 4 This is the relationship between the splitting strength of 15mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0037] Figure 5 This is the relationship between the splitting strength of 20mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0038] Figure 6 This is the relationship between the splitting strength of 30mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0039] Figure 7 This is the relationship between the compressive strength of 15mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0040] Figure 8This is the relationship between the compressive strength of 20mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0041] Figure 9 This is the relationship between the compressive strength of 30mm basalt fiber ecological permeable brick and the content of basalt chopped fiber;

[0042] Figure 10 The figure is a schematic diagram of the steps of the preparation method of the basalt fiber ecological permeable brick involved in the present invention. DETAILED DESCRIPTION

[0043] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0046] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention.

[0049] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] See also Figure 10 As shown, the present invention provides a method for preparing basalt fiber ecological permeable bricks, comprising the following steps:

[0051] S1. Collect waste fibers generated during the basalt fiber drawing process and process them in sand making equipment to obtain waste fiber sand.

[0052] Specifically, see Figures 1 to 3 As shown, the sand making equipment includes a belt conveyor 1, a feed hopper 2, a processing host 3, a high-pressure fan 4, a feeding pipe 5, a discharge hopper 6 and a dust collector 7 which are arranged in sequence.

[0053] A vibrating screen plate (not shown in the figure) is provided at the bottom of the feed hopper 2 for screening fiber waste and vitreous waste.

[0054] The vibrating screen plate has two working states: closed and open. When the vibrating screen plate is in the closed state, the fiber waste is intercepted by its own vibration, while the glass waste can pass through the sieve holes of the vibrating screen plate and leak into the processing host 3 for processing. When the vibrating screen plate is in the open state, the intercepted fiber waste falls freely into the processing host 3 for processing.

[0055] In this embodiment, the mesh aperture of the vibrating screen plate is 30-50 mm. Because the volume of vitreous waste is smaller than the mesh aperture of the vibrating screen plate, when the vibrating screen plate vibrates, the vitreous waste naturally flows through the mesh aperture, thereby separating it from the fiber waste. On-machine experiments have shown that after the vibrating screen plate vibrates, over 95% of the waste fibers flow through the mesh aperture.

[0056] The processing host 3 includes a frame 31, a box 32 and a host body. The box 32 is fixedly installed on the frame 31, and a processing area and idle areas on both sides of the processing area are provided inside it. The processing area is located directly below the feed hopper 2; the host body includes grinding teeth and shredding teeth that are arranged in the box 32 and rotate coaxially. The grinding teeth and shredding teeth can be switched by the push of a hydraulic mechanism to enter the processing area to crush glass waste silk and fiber waste silk respectively. At the beginning of the process, the grinding teeth are located in the processing area, and the shredding teeth are located in the idle area on one side of the processing area. The closed vibrating screen plate is activated, and the glass-like waste silk in the feed hopper 2 leaks into the processing area. Then, the grinding teeth rotate to complete the crushing process, and waste silk sand in the form of small sand-like particles and medium-sized gravel-like particles is obtained. The waste silk sand is then extracted by the high-pressure fan 4 in the form of negative pressure. Then, the hydraulic mechanism is activated to push the grinding teeth into the idle area on the other side of the processing area and the shredding teeth into the processing area to achieve switching. At this time, the vibrating screen plate is opened, allowing the intercepted fiber waste silk to fall freely into the processing area. The shredding teeth rotate to complete the crushing process, and waste silk sand in the form of micro-fibrous particles is obtained. The waste silk sand is then extracted by the high-pressure fan 4 in the form of negative pressure. Finally, the reverse action of the hydraulic mechanism pushes the grinding teeth and shredding teeth to switch again to restore to the initial state. In this embodiment, the hydraulic mechanism can be a hydraulic telescopic cylinder, which is not specifically limited here.

[0057] The above-mentioned fiber waste includes long fiber soft filament waste, long fiber hard filament waste and long fiber flocculent waste; the above-mentioned vitreous waste includes irregular black vitreous waste and black vitreous water drop-shaped waste.

[0058] The working principle of sand making equipment is as follows:

[0059] The collected waste silk materials are sent to the inside of the feed hopper 2 through the belt conveyor 1, and the vibrating screen plate is started, so that the glass waste silk leaks into the processing area of ​​the processing host 3 and is crushed by the rotating grinding teeth. The crushed first particle material (i.e. waste silk sand of small sand-like particles and medium-sized gravel-like particles) is blown to the discharge hopper 6 through the feeding pipe 5 under the suction action of the high-pressure fan 4; at this time, what is left in the feed hopper 2 is basically the fiber waste silk material intercepted by the vibrating screen plate, because the fiber waste silk material cannot pass through the sieve holes of the vibrating screen plate, even if a small amount leaks into the processing area, it will not affect the grinding effect of the grinding teeth; after that, the hydraulic mechanism is started, the shredding teeth are switched to enter the processing area to work, the vibrating screen plate is opened, and the fiber waste silk material is discharged. The fiber waste material falls freely to the processing area and is crushed by the rotating shredder teeth. The processed second granular material (i.e., waste silk sand of microfibrous particles) is blown to the discharge hopper 6 again through the high-pressure fan 4 and the feeding pipe 5; the large-sized particles that are not sucked away by the high-pressure fan 4 will fall to the bottom of the box 32. After the cleaning cycle and maintenance, the box 32 will be opened and collected to prepare for the next production. Due to the blowing of the high-pressure fan 4, the two granular materials will be fully mixed in the discharge hopper 6 to meet the use standards as a base material for permeable bricks. During this period, the dust collector 7 is always in working condition, which can absorb the dust entering the discharge hopper 6 in time, thereby effectively reducing dust pollution.

[0060] This sand making equipment uses a vibrating screen plate to screen waste silk without manual sorting, and switches the grinding teeth and shredding teeth specifically to crush waste silk of different shapes to produce waste silk sand, making waste silk sand making easier and reducing production costs.

[0061] Waste silk sand is mainly composed of a mixture of small sand-like particles, medium-sized gravel-like particles and microfibrous particles, which are used to replace traditional gravel and sand as the base material for permeable bricks; among them, the proportion of small sand-like particles (as a percentage of the total weight of waste silk sand, the same below) is 80% to 90%, the proportion of medium-sized gravel-like particles is 10% to 15%, and the proportion of microfibrous particles is 5% to 10%.

[0062] S2. Put the waste silk sand into the mixing equipment, and add the predetermined proportion of basalt chopped fibers and mix them evenly through stirring.

[0063] Specifically, the basalt chopped fibers use a hydrophilic sizing agent (model QS-021), with a drawing range of 17 to 22 μm and a chopped range of 20 to 30 mm (i.e., the length of the basalt chopped fibers). The baking process includes a temperature range of 90 to 140°C and a baking time of 6 hours.

[0064] See also Figures 4 to 6 As shown in the figure, the splitting strength of basalt fiber ecological permeable brick represented by the vertical axis has an obvious nonlinear relationship with the basalt chopped fiber content represented by the horizontal axis.

[0065] See also Figures 7 to 9 As shown in the figure, the compressive strength of the basalt fiber ecological permeable brick represented by the vertical axis has an obvious nonlinear relationship with the basalt chopped fiber content represented by the horizontal axis.

[0066] It can be seen from these figures that when the content of basalt chopped fiber (as a percentage of the total weight of permeable bricks) is 0.1% to 0.4%, the performance indicators of basalt fiber ecological permeable bricks at different ages (7 days and 28 days) such as splitting and compressive strength are greatly improved.

[0067] After comprehensive comparison, when the content of basalt chopped fibers reaches 0.3%, the splitting and compressive strength stability of basalt fiber ecological permeable bricks at different ages (7 days and 28 days) is the best (the difference is the smallest), and the corresponding optimal length range of basalt chopped fibers is 15-20 mm.

[0068] In this embodiment, the chopped basalt fibers are 20 mm long and are added at a predetermined ratio of 0.3% of the total weight of the permeable brick. These chopped basalt fibers bond easily with cement. After mixing, the ends of individual fiber groups form a dandelion-like shape, clumping together in the matrix to hold small pebbles and other materials. This provides a strong structural support within the brick, significantly improving its toughness and flexural tensile properties, enhancing its overall strength. This also increases porosity and permeability, and its thermal expansion coefficient matches that of cement, effectively preventing cracking in the cement within the brick.

[0069] S3. Add cement, natural river sand, and natural basalt stones to a mixing device for dry mixing to obtain prefabricated materials.

[0070] Specifically, the proportion of waste silk sand (as a percentage of the total weight of the permeable brick, the same below) is 18%, the proportion of cement is 30%, the proportion of natural river sand is 41.7%, and the proportion of natural basalt stone is 10%. Natural basalt stone can be replaced by natural quartz sand.

[0071] S4. The prefabricated material is sent to the interior of a brick making machine for vibration molding to obtain a base material.

[0072] S5. Cover the surface of the base material with a wear-resistant layer or a color layer, vibrate, extrude and form, and then demould to obtain a brick.

[0073] Specifically, during production, a color layer or color layer height is reserved in proportion to the brick thickness. After the base material is filled into the mold, the corresponding material is added and applied to the base material surface before entering the brick making machine. Natural stone particles offer a variety of color options and can be blended according to customer needs. They contain no harmful dyes, and after installation, they produce no harmful substances or pollute groundwater resources.

[0074] S6. The bricks are conveyed to the drying workshop via a belt for drying, and the finished basalt fiber ecological permeable bricks are obtained and shipped out.

[0075] The test report of the basalt fiber ecological permeable brick prepared by the above method is shown in the table below:

[0076] Table 1-Test report of basalt fiber ecological permeable brick

[0077]

[0078] It can be seen from this that the average compressive strength of the basalt fiber ecological permeable bricks added with waste silk sand and basalt chopped fibers is 1.13 times the technical requirements, the minimum compressive strength is 1.33 times the technical requirements, the water retention rate is 3.1 times the technical requirements, the mass loss rate of frost resistance and the frost resistance strength loss rate are 3.9 times and 1.9 times the technical requirements respectively, indicating that all indicators of this basalt fiber ecological permeable brick are better than the standard indicators and meet the requirements of JGJ / 376-2012 standard.

[0079] In summary, the basalt fiber ecological permeable bricks prepared by the above method realize the reuse of waste fibers, while saving the cost of waste fiber processing, complying with the national green environmental protection policy, being eco-friendly, and ensuring that product quality (splitting, compressive strength, etc.) meets industry standards.

[0080] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A method for preparing basalt fiber ecological permeable bricks, characterized in that: The following steps are involved: S1. Collecting waste fibers generated during the basalt fiber drawing process and processing them in a sand making device to obtain waste fiber sand; S2. Put the waste silk sand into the mixing equipment, and add the predetermined proportion of basalt chopped fibers and mix them evenly; S3, adding cement, natural river sand, and natural basalt stones to a mixing device for dry mixing to obtain prefabricated materials; S4, sending the prefabricated material to the interior of the brick making machine for vibration molding to obtain a base material; S5. Covering the surface of the base material with a wear-resistant layer or a color layer, vibrating and extruding the base material, and then demoulding the base material to obtain a brick; S6. The bricks are conveyed to the drying workshop via a belt for drying, and the finished basalt fiber ecological permeable bricks are obtained and shipped out; The sand making equipment described in step S1 includes a belt conveyor, a feed hopper, a processing main unit, a high-pressure fan, a feeding pipe, a discharge hopper and a dust collector arranged in sequence; a vibrating screen plate for screening fiber waste and vitreous waste is provided at the bottom of the feed hopper, and the vibrating screen plate has two working states: closed and open; when the vibrating screen plate is in the closed state, the fiber waste is intercepted by the vibration of the vibrating screen plate, while the vitreous waste can pass through the sieve holes of the vibrating screen plate and leak into the processing main unit for processing; when the vibrating screen plate is in the open state, the intercepted fiber waste falls freely into the processing main unit for processing; The processing host includes a frame, a box and a host body. The box is fixedly installed on the frame, and a processing area and idle areas on both sides of the processing area are provided inside the box. The processing area is located directly below the feed hopper; the host body includes grinding teeth and shredding teeth that are arranged in the box and rotate coaxially. The grinding teeth and shredding teeth can be switched by the push of a hydraulic mechanism to enter the processing area to crush the glass waste and fiber waste respectively.

2. The method for preparing basalt fiber ecological permeable bricks according to claim 1, characterized in that: The fiber waste includes long fiber soft filament waste, long fiber hard filament waste and long fiber flocculent waste. The vitreous waste silk includes irregular black vitreous waste silk and black vitreous teardrop-shaped waste silk.

3. The method for preparing basalt fiber ecological permeable brick according to claim 1, characterized in that: The waste silk sand in step S1 is mainly composed of a mixture of small sand-like particles, medium-sized stone-like particles and micro-fibrous particles; The proportion of the sand-like small particles is 80% to 90%, the proportion of the stone-like medium-sized particles is 10% to 15%, and the proportion of the microfibrous particles is 5% to 10%.

4. The method for preparing basalt fiber ecological permeable brick according to claim 1, characterized in that: The basalt chopped fibers described in step S2 use a hydrophilic sizing agent, with a drawing range of 17 to 22 μm and a chopped range of 20 to 30 mm. The baking process has a temperature range of 90 to 140° C. and a baking time of 6 hours.

5. The method for preparing basalt fiber ecological permeable brick according to claim 4, characterized in that: The length of the basalt chopped fibers is 20 mm, and the predetermined proportion of the added fibers is 0.3% of the total weight of the permeable brick.

6. A basalt fiber ecological permeable brick, characterized in that: The basalt fiber ecological permeable brick is prepared by the preparation method of any one of claims 1 to 5.

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