Environmentally friendly combined wall

Abstract

The invention discloses an environmentally friendly combined wall, including mortise and tenon bricks, exterior wall panels and blind hole bricks; a plurality of mortise and tenon bricks are stacked to form an interior wall, a plurality of exterior wall panels are spliced ​​into a wall panel layer, and are arranged on the walls on both sides of the interior wall; the blind hole bricks are located at the top of the interior wall and the wall panel layer assembly; the mortise and tenon bricks include a mortise and tenon brick body, the mortise and tenon brick body is a hollow structure, and the mortise and tenon brick body is provided with a mortise and tenon structure; the inner surface of the exterior wall panel is provided with a support frame, and the support frame is composed of a cross-arranged pasting plate and a plug-in plate, and the end section of the plug-in plate is a trapezoid; the end of the plug-in plate is inserted into the gap between adjacent mortise and tenon bricks, and the pasting plate fits the outer side of the mortise and tenon brick, so that a filling cavity is formed between the pasting plate and the adjacent mortise and tenon bricks, and the filling cavity is filled with mortar; the connection of each part of the invention is stable and reliable, the construction process is reduced, and a green and environmentally friendly construction method is achieved. The invention processes the tailings through multiple processes, recycles them, and can be recycled and reused for a wide range of uses, protecting the ecological environment.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly building materials, and more particularly to an environmentally friendly combined wall. Background Art

[0002] At present, most of the existing composite structural building systems use steel frame as the main body, with brick walls and aerated concrete blocks filled inside. Although they have strong anti-aging ability, they have hidden dangers such as heavy weight, poor thermal insulation, and easy cracking of the wall. Some use light steel frame structural systems, fill thermal insulation materials such as thermal insulation cotton between light steel keels, and install PVC hanging panels or Et board and other enclosure system systems on the outside. Although they are light in weight, they have the disadvantages of poor thermal insulation performance, poor sound insulation effect, and short wall weather resistance. At the same time, when it is necessary to hang objects, the hollow wall cannot be drilled to install expansion screws

[0003] With the development of economy, the demand for mineral products has increased significantly, the scale of mining development has increased accordingly, and the amount of beneficiation tailings generated will continue to increase; in addition, the grade of many available metal ores is decreasing day by day. In order to meet the growing demand for mineral products, the scale of beneficiation is getting larger and larger, so the amount of beneficiation tailings generated will also increase significantly. The large amount of stockpiled tailings has caused many problems for mining, environment and economy, and there are the following problems:

[0004] 1. Serious waste of mineral resources. Since tailings contain not only useful components such as metal ores and non-metallic ores that can be reselected, but also the final tailings that cannot be reselected have many uses, the amount of useful components wasted in tailings is quite considerable.

[0005] 2. Tailings storage takes up a lot of land and requires huge investment. Domestic and foreign treatment of tailings, regardless of whether the useful minerals in the tailings have recycling value, is mostly stored on the ground. The storage of tailings not only takes up a lot of arable land, but also easily causes environmental pollution in the mining area, soil erosion, vegetation destruction, etc.

[0006] 3. Tailings have an impact on the natural ecological environment. The impact of tailings on the natural ecological environment is specifically manifested in: tailings are easy to flow and collapse when stored, causing vegetation damage and injuries, especially in the rainy season, which is very likely to cause collapse and landslides. The tailings pond dam is relatively high, which poses a safety hazard.

[0007] The composition of tailings and residual mineral processing agents cause serious damage to the ecological environment, especially tailings containing heavy metals. Sulfides in them produce acidic water that further leaches heavy metals, and their loss will cause harm to the entire ecological environment.

[0008] How to utilize tailings to make building materials so as to construct a composite wall that is environmentally friendly, has a strong structure, is short in construction time, is easy to install, and is beautiful is a problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0009] In view of this, the present invention provides an environmentally friendly composite wall to at least solve one of the problems raised in the above background technology section.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] An environmentally friendly combined wall, comprising mortise and tenon bricks, exterior wall panels and blind hole bricks; a plurality of the mortise and tenon bricks are stacked to form an interior wall, a plurality of the exterior wall panels are spliced ​​to form a wall panel layer, and are arranged on both side walls of the interior wall; the blind hole bricks are located on the top of the interior wall and the wall panel layer combination;

[0012] The mortise and tenon brick comprises a mortise and tenon brick body, the mortise and tenon brick body is a hollow structure, the mortise and tenon brick body is provided with a mortise and tenon structure, the mortise and tenon structure comprises a raised tenon portion and a raised tenon portion mortise hole, the raised tenon portion is arranged at the top of the hollow cavity of the mortise and tenon brick body and protrudes outward; the raised tenon portion mortise hole is arranged at the bottom of the hollow cavity of the mortise and tenon brick body, and the raised tenon portion mortise hole is arranged corresponding to the raised tenon portion;

[0013] A support frame is provided on the inner surface of the exterior wall panel, and the support frame is composed of a cross-arranged pasting plate and an inserting plate, and the end section of the inserting plate is a trapezoid; the end of the inserting plate is inserted into the gap between the adjacent mortise and tenon bricks, and the pasting plate is fitted with the outer side surface of the mortise and tenon bricks, so that a filling cavity is formed between the pasting plate and the adjacent mortise and tenon bricks, and the filling cavity is filled with mortar;

[0014] The blind hole brick comprises a blind hole brick body, a plurality of blind holes are opened on one brick surface of the blind hole brick, the blind hole brick is located at the top of the cavity formed by the mortise and tenon brick and the exterior wallboard, and the blind hole of the blind hole brick is placed upward, and a closed cavity is formed between the blind hole brick, the mortise and tenon brick and the wallboard layer. Soil can be placed in the blind hole of the blind hole brick to plant herbaceous ornamental plants.

[0015] The mortise and tenon bricks are matched together through the mortise and tenon structure to form the inner wall. No glue is required in the whole process, and the connection of each part is stable and reliable, which reduces the construction process. The support frame arranged on the external wall panel is used to make the pasting plate fit with the outer side of the mortise and tenon brick, and a filling cavity is formed between the pasting plate and the adjacent mortise and tenon brick. The filling cavity is filled with mortar, and the plug-in plate can be fixed inside after the mortar solidifies. The end of the plug-in plate is set to a trapezoidal shape, which can prevent the plug-in plate from being pulled out of the mortar after the mortar is loosened, thereby enhancing the stability of its connection. At the same time, when it is necessary to hang objects, holes can be drilled at the location of the plug-in plate of the external wall panel, which solves the problem that it is impossible to drill holes in the hollow wall to install expansion screws.

[0016] A closed chamber is formed between the blind hole bricks, the mortise and tenon bricks and the wallboard layer, which can block the propagation of part of the heat and achieve a good sound insulation effect;

[0017] Preferably, in the above-mentioned environmentally friendly composite wall, a partition is provided in the hollow cavity of the mortise and tenon brick body, and the partition divides the hollow cavity of the mortise and tenon brick body into two sub-cavities, each of the sub-cavities is provided with the mortise and tenon structure, the raised tenon portion is arranged at the top of the sub-cavity, and the raised tenon portion mortise hole is arranged at the bottom of the sub-cavity and corresponds to the raised tenon portion.

[0018] Preferably, in the above-mentioned environmentally friendly combined wall, the partition is provided with a first through hole which passes through from top to bottom, and two first through holes are provided.

[0019] Preferably, in the above-mentioned environmentally friendly combined wall, the first through holes of the mortise and tenon bricks located in the same row on the inner wall are arranged correspondingly, and steel pipes or cast-in-place concrete columns are arranged in the first through holes to form a skeleton structure, making the combined wall more stable.

[0020] Preferably, in the above-mentioned environmentally friendly composite wall, steel bars are embedded in the cast-in-place concrete columns.

[0021] Preferably, in the above-mentioned environmentally friendly combined wall, the inner edge size of the mortise hole of the raised tenon is the same as the outer edge size of the raised tenon, and a second through hole is provided on the raised tenon, and a potted plant pot can be placed in the second through hole of the mortise and tenon brick located on the top of the wall for planting potted plants.

[0022] Preferably, in the above-mentioned environmentally friendly composite wall, the mortar is air bubble concrete, which has a certain thermal insulation effect.

[0023] Preferably, in the above-mentioned environmentally friendly combined wall, the outer side of the exterior wall panel is provided with a relief pattern to make the combined wall more beautiful.

[0024] Preferably, in the above-mentioned environmentally friendly combined wall, the mortise and tenon bricks, the exterior wall panels and the blind hole bricks are all made of tailings as raw materials and processed by a brick making process, which includes the following steps:

[0025] Step 1, prepare raw materials: select tailings with mud content ≤ 15% and water content ≥ 10%, and remove impurities. The fine tailings in the tailings have a mesh size of ≥ 40 and the coarse tailings have a particle size of 3 mm; at the same time, prepare 325 grade silicate cement or 425 grade silicate cement;

[0026] Step 2, crushing the raw materials: drying, iron removal, impurity soil removal, stone removal, rolling, and shredding the tailings selected in step 1, and finally passing through a powder mill to make them into powder;

[0027] Step 3, Proportioning: Use an automated electronic scale to weigh the proportion, 60 parts by weight of fine tailings, 22 parts by weight of coarse tailings, 25 parts by weight of 325 grade silicate cement or 18 parts by weight of 425 grade silicate cement;

[0028] Step 4, stirring: the raw materials prepared in step 3 are sent into a mixer through an automatic conveyor belt conveyor, stirred for 130 seconds, and after being stirred evenly, sent to an aging bin through an automatic conveyor belt conveyor, aged for 120 seconds, and then sent to a brick press, and pressed into a brick blank by a pressure of 1100 tons for 14 seconds;

[0029] Step 5, steaming: Use a robotic arm to carry the bricks in step 4 onto a steaming trolley, push them into a steaming kettle, and seal the steaming kettle; introduce steam to start heating up to 200°C for 3 hours, and the pressure reaches 12Ma. After keeping the temperature and pressure for 4 hours, cool down to 0°C for 3 hours, then open the vent valve to exhaust, and let it stand for three hours;

[0030] Step 6: Packing and storage: Use a winch to drag the cooled steam-cured trolley out of the steam-curing kettle, and pack and store the tailings bricks after checking that they meet the qualified standards.

[0031] Preferably, in the above-mentioned environmentally friendly combined wall, the impurities removed in the impurity removal treatment in step one include branches, grass leaves and turf; and the silica content of the tailings used in step one is ≥50%.

[0032] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses an environmentally friendly composite wall, which does not require any glue during the entire construction process, and the connections between the various parts are stable and reliable, which reduces the construction process, has little impact on the on-site environment, and achieves a green and environmentally friendly construction method.

[0033] The invention processes the tailings through multiple processes for recycling, thereby treating various tailings solid wastes, being recyclable and having a wide range of uses, and protecting the ecological environment; it is more environmentally friendly, has a simple and elegant appearance, and can also be polished and processed by sculpture art, thereby improving the visual effect and artistic value of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 The accompanying drawing is a structural schematic diagram of an environmentally friendly combined wall of the present invention;

[0036] Figure 2 The accompanying drawing is a schematic diagram of the combined structure of the mortise and tenon brick and the exterior wall panel in the present invention;

[0037] Figure 3-4 The accompanying drawing is a schematic diagram of the structure of the mortise and tenon brick;

[0038] Figure 5 The accompanying drawing is a schematic diagram of the structure of the exterior wall panel;

[0039] Figure 6 The attached figure is a process flow chart for the processing of mortise and tenon bricks, exterior wall panels and blind hole bricks. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention discloses an environmentally friendly combined wall, comprising mortise and tenon bricks 1, exterior wall panels 2 and blind hole bricks 3; a plurality of mortise and tenon bricks 1 are stacked to form an interior wall, a plurality of exterior wall panels 2 are spliced ​​to form a wall panel layer, and are arranged on both side walls of the interior wall; the blind hole bricks 3 are located on the top of the combination of the interior wall and the wall panel layer;

[0042] The mortise and tenon brick 1 comprises a mortise and tenon brick body 4, the mortise and tenon brick body 4 is a hollow structure, the mortise and tenon brick body 4 is provided with a mortise and tenon structure, the mortise and tenon structure comprises a raised tenon portion 5 and a raised tenon portion mortise hole 6, the raised tenon portion 5 is arranged at the top of the hollow cavity of the mortise and tenon brick body 4 and protrudes outward; the raised tenon portion mortise hole 6 is arranged at the bottom of the hollow cavity of the mortise and tenon brick body 4, and the raised tenon portion mortise hole 6 is arranged corresponding to the raised tenon portion 5;

[0043] The inner surface of the exterior wall panel 2 is provided with a support frame 7, which is composed of a cross-arranged pasting plate 8 and a plugging plate 9, and the end section of the plugging plate 9 is a trapezoidal; the end of the plugging plate 9 is inserted into the gap between the adjacent mortise and tenon bricks 1, and the pasting plate 8 is fitted with the outer side of the mortise and tenon brick 1, so that a filling cavity 10 is formed between the pasting plate 8 and the adjacent mortise and tenon brick 1, and the filling cavity 10 is filled with mortar;

[0044] The blind hole brick 3 includes a blind hole brick body, and a plurality of blind holes are opened on one brick surface of the blind hole brick 3. The blind hole brick 3 is located at the top of the cavity formed by the mortise and tenon brick 1 and the exterior wall panel 2, and the blind hole of the blind hole brick 3 is placed upward, and a closed cavity is formed between the blind hole brick 3, the mortise and tenon brick 1 and the wall panel layer. Soil can be placed in the blind hole of the blind hole brick 3 to plant herbaceous ornamental plants.

[0045] The mortise and tenon bricks 1 are matched together through the mortise and tenon structure to form an inner wall. No glue is required throughout the process, and the connections between the various parts are stable and reliable, which reduces the construction process. The support frame 7 arranged on the exterior wall panel 2 is used to make the pasting plate 8 fit the outer side of the mortise and tenon brick 1, and a filling cavity 10 is formed between the pasting plate 8 and the adjacent mortise and tenon brick 1. The filling cavity 10 is filled with mortar. After the mortar solidifies, the plug-in plate 9 can be fixed inside, and the end of the plug-in plate 9 is set to a trapezoidal shape, which can prevent the plug-in plate 9 from being pulled out of the mortar after the mortar is loosened, thereby enhancing the stability of its connection. At the same time, when it is necessary to hang objects, holes can be drilled at the location of the plug-in plate 9 of the exterior wall panel 2, which solves the problem that it is impossible to drill holes in the hollow wall to install expansion screws.

[0046] A closed chamber is formed between the blind hole bricks 3, the mortise and tenon bricks 1 and the wallboard layer, which can block the spread of part of the heat and achieve a good sound insulation effect;

[0047] In order to further optimize the above technical solution, a partition 11 is arranged in the hollow cavity of the mortise and tenon brick body 4, and the partition 11 divides the hollow cavity of the mortise and tenon brick body 4 into two sub-cavities, each of which is provided with a mortise and tenon structure, and the raised tenon portion 5 is arranged at the top of the sub-cavity, and the raised tenon portion mortise hole 6 is arranged at the bottom of the sub-cavity and corresponds to the raised tenon portion 5.

[0048] In order to further optimize the above technical solution, a first through hole 12 penetrating from top to bottom is provided on the partition 11, and two first through holes 12 are provided.

[0049] In order to further optimize the above technical solution, the first through holes 12 of the mortise and tenon bricks 1 located in the same row on the inner wall are correspondingly arranged, and steel pipes or cast-in-place concrete columns 13 are arranged in the first through holes 12 to form a skeleton structure, making the combined wall more stable.

[0050] In order to further optimize the above technical solution, steel bars are embedded in the cast-in-place concrete column 13 .

[0051] In order to further optimize the above technical solution, the inner edge size of the mortise hole 6 of the raised tenon is the same as the outer edge size of the raised tenon 5, and a second through hole 14 is opened on the raised tenon 5, and a potted plant pot can be placed in the second through hole 14 of the mortise and tenon brick 1 located on the top of the wall for planting potted plants.

[0052] In order to further optimize the above technical solution, the mortar is air bubble concrete, which has a certain thermal insulation effect.

[0053] In order to further optimize the above technical solution, a relief pattern is provided on the outer side of the exterior wall panel 2 to make the combined wall more beautiful.

[0054] In order to further optimize the above technical solution, the mortise and tenon bricks 1, the exterior wall panels 2 and the blind hole bricks 3 are all made of tailings as raw materials and processed through a brick making process, including the following steps:

[0055] Step 1, prepare raw materials: select tailings with mud content ≤ 15% and water content ≥ 10%, and remove impurities. The fine tailings in the tailings have a mesh size of ≥ 40 and the coarse tailings have a particle size of 3 mm; at the same time, prepare 325 grade silicate cement or 425 grade silicate cement;

[0056] Step 2, crushing the raw materials: drying, iron removal, impurity soil removal, stone removal, rolling, and shredding the tailings selected in step 1, and finally passing through a powder mill to make them into powder;

[0057] Step 3, Proportioning: Use an automated electronic scale to weigh the proportion, 60 parts by weight of fine tailings, 22 parts by weight of coarse tailings, 25 parts by weight of 325 grade silicate cement or 18 parts by weight of 425 grade silicate cement;

[0058] Step 4, stirring: the raw materials prepared in step 3 are sent into a mixer through an automatic conveyor belt conveyor, stirred for 130 seconds, and after being stirred evenly, sent to an aging bin through an automatic conveyor belt conveyor, aged for 120 seconds, and then sent to a brick press, and pressed into a brick blank by a pressure of 1100 tons for 14 seconds;

[0059] Step 5, steaming: Use a robotic arm to carry the bricks in step 4 onto a steaming trolley, push them into a steaming kettle, and seal the steaming kettle; introduce steam to start heating up to 200°C for 3 hours, and the pressure reaches 12Ma. After keeping the temperature and pressure for 4 hours, cool down to 0°C for 3 hours, then open the vent valve to exhaust, and let it stand for three hours;

[0060] Step 6: Packing and storage: Use a winch to drag the cooled steam-cured trolley out of the steam-curing kettle, and pack and store the tailings bricks after checking that they meet the qualified standards.

[0061] In order to further optimize the above technical solution, in step one, the impurities removed include branches, grass leaves and turf; the silica content of the tailings used in step one is ≥50%.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0063] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An environmentally friendly composite wall, characterized in that: It comprises mortise and tenon bricks, exterior wall panels and blind hole bricks; a plurality of the mortise and tenon bricks are stacked to form an interior wall, a plurality of the exterior wall panels are spliced ​​to form a wall panel layer, and are arranged on the wall surfaces on both sides of the interior wall; the blind hole bricks are located on the top of the interior wall and the wall panel layer combination; The mortise and tenon brick comprises a mortise and tenon brick body, the mortise and tenon brick body is a hollow structure, the mortise and tenon brick body is provided with a mortise and tenon structure, the mortise and tenon structure comprises a raised tenon portion and a raised tenon portion mortise hole, the raised tenon portion is arranged at the top of the hollow cavity of the mortise and tenon brick body and protrudes outward; the raised tenon portion mortise hole is arranged at the bottom of the hollow cavity of the mortise and tenon brick body, and the raised tenon portion mortise hole is arranged corresponding to the raised tenon portion; A support frame is provided on the inner surface of the exterior wall panel, and the support frame is composed of a cross-arranged pasting plate and an inserting plate, and the end section of the inserting plate is a trapezoid; the end of the inserting plate is inserted into the gap between the adjacent mortise and tenon bricks, and the pasting plate is fitted with the outer side surface of the mortise and tenon bricks, so that a filling cavity is formed between the pasting plate and the adjacent mortise and tenon bricks, and the filling cavity is filled with mortar; The blind hole brick comprises a blind hole brick body, a plurality of blind holes are opened on one brick surface of the blind hole brick, the blind hole brick is located at the top of the cavity formed by the mortise and tenon brick and the exterior wall panel, and the blind holes of the blind hole brick are placed upward, and a closed cavity is formed between the blind hole brick, the mortise and tenon brick and the wall panel layer.

2. The environmentally friendly combined wall according to claim 1, characterized in that: A partition is arranged in the hollow cavity of the mortise and tenon brick body, and the partition divides the hollow cavity of the mortise and tenon brick body into two sub-cavities. Each sub-cavity is provided with the mortise and tenon structure. The raised tenon portion is arranged at the top of the sub-cavity, and the raised tenon portion mortise hole is arranged at the bottom of the sub-cavity and corresponds to the raised tenon portion.

3. The environmentally friendly combined wall according to claim 2, characterized in that: The partition plate is provided with a first through hole which passes through from top to bottom, and two first through holes are provided.

4. The environmentally friendly combined wall according to claim 3, characterized in that: The first through holes of the mortise and tenon bricks located in the same row on the inner wall are correspondingly arranged, and steel pipes or cast-in-place concrete columns are arranged in the first through holes.

5. The environmentally friendly combined wall according to claim 4, characterized in that: Steel bars are embedded in the cast-in-place concrete column.

6. The environmentally friendly combined wall according to claim 1, characterized in that: The inner edge size of the mortise hole of the raised tenon is the same as the outer edge size of the raised tenon, and a second through hole is opened on the raised tenon.

7. The environmentally friendly combined wall according to claim 1, characterized in that: The mortar is air bubble concrete.

8. The environmentally friendly combined wall according to claim 1, characterized in that: The outer side of the exterior wall panel is provided with a relief pattern.

9. The environmentally friendly combined wall according to claim 1, characterized in that: Mortise and tenon bricks, exterior wall panels and blind hole bricks are all made from tailings and processed through a brick-making process that includes the following steps: Step 1, prepare raw materials: select tailings with mud content ≤ 15% and water content ≥ 10%, and remove impurities. The fine tailings in the tailings have a mesh size of ≥ 40 and the coarse tailings have a particle size of 3 mm; at the same time, prepare 325 grade silicate cement or 425 grade silicate cement; Step 2, crushing the raw materials: drying, iron removal, impurity soil removal, stone removal, rolling, and shredding the tailings selected in step 1, and finally passing through a powder mill to make them into powder; Step 3, Proportioning: Use an automated electronic scale to weigh the proportion, 60 parts by weight of fine tailings, 22 parts by weight of coarse tailings, 25 parts by weight of 325 grade silicate cement or 18 parts by weight of 425 grade silicate cement; Step 4, stirring: the raw materials prepared in step 3 are sent into a mixer through an automatic conveyor belt conveyor, stirred for 130 seconds, and after being stirred evenly, sent to an aging bin through an automatic conveyor belt conveyor, aged for 120 seconds, and then sent to a brick press, and pressed into a brick blank by a pressure of 1100 tons for 14 seconds; Step 5, steaming: Use a robotic arm to carry the bricks in step 4 onto a steaming trolley, push them into a steaming kettle, and seal the steaming kettle; introduce steam to start heating up to 200°C for 3 hours, and the pressure reaches 12Ma. After keeping the temperature and pressure for 4 hours, cool down to 0°C for 3 hours, then open the vent valve to exhaust, and let it stand for three hours; Step 6: Packing and storage: Use a winch to drag the cooled steam-cured trolley out of the steam-curing kettle. After the tailings bricks are inspected and meet the qualified standards, they are packaged and stored.

10. The environmentally friendly combined wall according to claim 9, characterized in that: The impurities removed in the step 1 include branches, grass leaves and turf; the silicon dioxide content of the tailings used in the step 1 is ≥50%.

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