TW202304834A - Calcium silicate board using waste glass powder and manufacturing method thereof contributing to the development of waste solar photovoltaic panels toward the goal of sustainable utilization of waste materials - Google Patents

Abstract

The present invention provides a calcium silicate board using waste glass powder and its related manufacturing method. In the step of preparing a raw material, an industrial waste recycled material containing a predetermined proportion of waste glass powder is mixed with a base material, and then steps such as copy molding, on-time cutting and leveling, curing and drying are performed to complete the finished calcium silicate board. In this way, the amount of expensive raw materials can be reduced, and the fire resistance of the entire calcium silicate board can be improved. In particular, the present invention can provide another better and feasible way to recycle the waste glass of solar photovoltaic panels, thereby contributing to the development of waste solar photovoltaic panels toward the goal of sustainable utilization of waste materials.

Description

Calcium silicate board using waste glass powder and its manufacturing method

The present invention relates to a calcium silicate board, and aims to provide a calcium silicate board using waste glass powder and a related manufacturing method.

Calcium silicate board is a composite material of calcium silicate hydrate and fiber. According to the classification specification of the national standard CNS13777, it belongs to a kind of fiber reinforced cement board. It is also the main flame-resistant board for interior decoration. The raw material is generally made of silicon (calcium silicate powder, quartz powder, diatomaceous earth, etc.), calcareous materials (cement, lime, etc.), reinforcing fibers (pulp fiber, glass fiber, etc.), after pulping, billeting, steam curing, surface sanding Lightweight panels made by light and other processes.

Due to the high cost of calcium silicate powder and diatomite raw materials in the production of calcium silicate boards, the price of calcium silicate boards is high; considering the limited environmental resources, it should not be over-developed, and urban mining will make waste Recyclable materials can not only make limited resources last forever, but also reduce environmental load. Under the dual consideration of environmental resources and cost reduction, the use of recycled materials or alternative materials has become an important policy promotion of the government's environmental and economic departments. direction.

The use of calcium silicate board in the use of recycled materials is mainly to participate in the Buzuolan reaction, which means that the Buzuolan material will undergo a second hydration with the hydration product of cement. Chemical reaction, so it is also called the secondary reaction of cement. The common materials used for cement include hearthstone, fly ash, rice husk ash, diatomaceous earth, silica fume and quartz powder.

In addition, the calcium silicate board made of waste must also meet the requirements of all quality test items in CNS 13777. It is not easy to predict the properties it should have from a single raw material during the product development process. Through the indirect evaluation in the tedious manufacturing process (process) of the mixture, by constantly adjusting the structure of the raw material components with similar properties, we can explore the characteristics that may be required, and then determine the final product of each component, including: fire resistance, durability , heat insulation, sound insulation, environmental protection, construction and even anti-mildew and anti-bacterial performance.

Therefore, in the product development process of calcium silicate board, a specific industrial waste recycled material is usually selected as the raw material source for the Buzuolan reaction in materials other than cement; however, industrial waste recycled materials are often used due to limited pipeline options. High acquisition costs must be spent, and there is a potential risk that the upstream industry will not be able to maintain the normal production of the production line due to production reduction or shutdown.

Furthermore, in recent years, the environmental protection concept of energy saving and carbon reduction has risen, and the application of solar panels has become more extensive, and its output has also increased significantly. According to the general lifespan of solar photovoltaic panels, it is generally more than 15-25 years, and a large number of solar photovoltaic panels will also be produced during the production process. Waste glass, so it can be estimated that a large number of waste solar photovoltaic panels will continue to be generated in the next 20 years.

At present, the waste glass of solar photovoltaic panels is oriented toward recycling and reuse. The main treatment method is to make the waste glass of solar photovoltaic panels into environmentally friendly floor tiles through sintering. If other recycling methods can be developed, it will help waste Solar photovoltaic panels achieve the goal of sustainable utilization of waste materials.

In view of this, the main purpose of the present invention is to provide a calcium silicate board that can reduce the amount of expensive raw materials used in the calcium silicate board and improve fire resistance, and its related manufacturing method.

In order to achieve the above purpose, the present invention provides a calcium silicate board using waste glass powder. The calcium silicate board is mixed with industrial waste recycled materials and basic materials, and then formed by copying, cutting and leveling, curing and drying and other steps to obtain the finished calcium silicate board; the basic material includes Portland cement accounting for 15-25% by weight, pulp accounting for 5-10% by weight, calcium silicate powder accounting for 5-20% by weight, and 3-8% by weight of quicklime; and, the recycled industrial waste material comprises 5-15% by weight of spent zeolite catalyst, 5-20% by weight of waste glass powder, 5-20% by weight of quartz bricks for grinding sludge.

The present invention can not only reduce the consumption of expensive calcium silicate powder by adding a set proportion of waste glass powder to the industrial waste recycled materials, but also help to reduce the cost of recycling industrial waste recycled materials; especially, the calcium silicate of the present invention During the high temperature process of the board, the pores and channels between the waste glass powder particles change the shape through diffusion, and the powder is transformed into a compact block material, which can obtain better fireproof characteristics.

According to the above structural features, the waste glass powder can be pulverized from waste solar photovoltaic panels after removal of polymer encapsulant and metal.

The present invention also provides a method for making calcium silicate board using waste glass powder. The method comprises the following steps: (a) preparing a primary material, the primary material comprises basic materials and recycled industrial waste materials, the basic material comprises Portland cement accounting for 15-25% by weight, 5-10% by weight % pulp, calcium silicate powder accounting for 5-20% by weight, quicklime accounting for 3-8% by weight, and the industrial waste regeneration materials include waste zeolite catalyst accounting for 5-15% by weight, 5-20% of waste glass powder, 5-20% by weight of quartz brick grinding sludge; (b) mixing ingredients, mixing the initial materials, and then adding water to adjust to viscous raw materials; (c) making type, the mixed viscous raw material is copied into a green board with a preset thickness; (d) one-time cutting and leveling, the raw board is cut into a preset size, and pressure is applied for leveling, so that Its size and thickness are the same; (e) health preservation, the flattened raw board is first subjected to normal pressure curing at 40-65 °C, then dehydrated and stripped, and then subjected to high-pressure curing at 150-210 °C to make the flattened raw board The material of the raw board shows physical properties; (f) Drying, the raw board is dried at a working temperature of 120~170°C for 30~50 minutes, and the raw board is completely dried to obtain the green building material calcium silicate board.

According to the above-mentioned technical features, after the plurality of green boards have passed through the step (d), the soft residues produced during the cutting of the green boards in the step (d) can be further added back to the step after being dispersed and refined. (b) blending with the starting materials.

According to the above technical features, the present invention can further include a step (g) secondary cutting, cutting the primary calcium silicate board into a size that meets the product requirements to obtain the final calcium silicate board.

According to the above-mentioned technical characteristics, the present invention can further include a step (g) secondary cutting, cutting the initial calcium silicate board into a size that meets the product requirements, and obtaining to obtain the final calcium silicate board; and, after the plurality of calcium silicate board preliminary products pass through the step (g), the hard residual material produced when the calcium silicate board preliminary products are cut in the step (g) is passed through After crushing, add back to the step (b) to fuse with these initial materials.

According to the above technical features, the present invention can further include a step (g) secondary cutting, cutting the primary product of the calcium silicate board into a size that meets the product requirements, and obtaining the final product of the calcium silicate board; After passing through the step (d), the soft residual materials generated during the cutting of the green boards in the step (d) are dispersed and refined and then added back to the step (b) to fuse with the initial materials; and, After the multiple calcium silicate board preliminary products pass through the step (g), the hard residues generated during the cutting of the calcium silicate board preliminary products in the step (g) are further crushed and then added back to the step (b) Combine with these starting materials.

According to the above technical features, in the step (c) of the present invention, the mixed viscous raw material can be made into a green board with a predetermined thickness through a sheet-making machine.

According to the above technical features, the waste glass powder can be pulverized from waste solar photovoltaic panels after removal of polymer encapsulants and metals.

Compared with the traditional conventional technology, the present invention mainly mixes the regenerated industrial waste material containing a set proportion of waste glass powder with the basic material in the step of preparing the primary material. Since the waste glass powder is rich in siliceous raw materials, it can not only reduce the cost The amount of calcium silicate powder used can reduce the cost of recycling industrial waste recycled materials, and it can also provide another better and feasible recycling method for waste solar photovoltaic panels, which will help waste solar photovoltaic panels to achieve the goal of sustainable utilization of waste materials. develop.

In particular, when one of the sources of industrial waste recycled materials is reduced Or when the stock is out of stock, it can also strike a balance between other types of industrial waste recycled materials, and use relatively more active and reliable means to reduce the risk of upstream industries reducing production or shutting down and unable to maintain normal production of the production line.

In addition, the calcium silicate board using waste glass powder in the present invention can transform the powder into a compact block material through the pores and channels between the waste glass powder particles through diffusion during the process of high temperature action , resulting in better fire performance.

10: initial material

11: Basic material

12: Industrial waste recycled materials

20: viscous raw meal

30: raw board

31: Soft remaining material

40: The first finished product of calcium silicate board

41: Hard remainder

50: Calcium silicate board final product

[FIG. 1] A schematic diagram of a process for obtaining waste glass frit that may be implemented in the present invention.

[Fig. 2] The basic flowchart of the first possible implementation of the calcium silicate board manufacturing method of the present invention.

[Fig. 3] A schematic diagram of the possible implementation of the raw materials or products added in each step in the first possible implementation of the calcium silicate board manufacturing method of the present invention.

[Fig. 4] A schematic diagram of another possible implementation of raw materials or products added in each step of the first possible implementation of the calcium silicate board manufacturing method of the present invention.

[Fig. 5] The basic flowchart of the second possible implementation of the calcium silicate board manufacturing method of the present invention.

[FIG. 6] A schematic diagram of the possible implementation of raw materials or products added in each step in the second possible implementation of the calcium silicate board manufacturing method of the present invention.

[FIG. 7] A schematic diagram of another possible implementation of raw materials or products added in each step of the second possible implementation of the calcium silicate board manufacturing method of the present invention.

The present invention mainly provides a calcium silicate board using waste glass powder, and its related calcium silicate board production method; the calcium silicate board is mixed with industrial waste recycled materials and basic materials, and then shaped by copying and cut at one time And leveling, curing and drying steps to obtain the finished calcium silicate board.

Among them, the basic material includes 15-25% by weight of Portland cement, 5-10% by weight of pulp, 5-20% by weight of calcium silicate powder, 3-8% by weight of quicklime; and, the regenerated industrial waste material comprises 5-15% by weight of spent zeolite catalyst, 5-20% by weight of waste glass powder, and 5-20% by weight of quartz brick grinding sludge.

By adding a set proportion of waste glass powder to the industrial waste recycled materials, not only can reduce the amount of expensive calcium silicate powder, but also help to reduce the cost of recycling industrial waste recycled materials; especially, the calcium silicate board of the present invention can be used in In the process of high temperature action, the pores and channels between the waste glass powder particles can be changed through diffusion to change the shape, and the powder can be transformed into a compact block material, resulting in better fireproof properties.

As shown in [Figure 1], the waste glass powder used in the present invention can be crushed from waste solar photovoltaic panels after removing the polymer encapsulant and metal, and the obtained waste glass powder is composed of SiO ₂ , SiO ₂ Accounting for 68~75%, it can be used as the raw material for the manufacture of fiber reinforced cement board; in addition, solar photovoltaic panels are mainly composed of glass, aluminum, silicon, copper, precious metals and polymer encapsulation adhesives, which can pass through heat after proper classification and dismantling The pyrolysis or stripping method removes the polymer encapsulant from the waste solar photovoltaic panels.

As shown in [Figure 2] and [Figure 3], the present invention uses calcium silicate of waste glass powder The method for making a board basically comprises the following steps:

(a) Prepare the initial material, the initial material 10 comprises a base material 11 and industrial waste recycled material 12, the base material 11 comprises Portland cement accounting for 15% to 25% by weight, 5% to 10% by weight of Pulp, calcium silicate powder accounting for 5-20% by weight, and quicklime accounting for 3-8% by weight. The industrial waste regeneration material 12 includes spent zeolite catalyst accounting for 5-15% by weight, accounting for 5% by weight ~20% waste glass powder, 5~20% by weight of quartz brick grinding sludge.

(b) Mixing the ingredients, mixing the raw material 10, and then adding water to make a viscous raw material 20.

(c) Forming, forming the mixed viscous raw material 20 into a green board 30 with a predetermined thickness; in this step, the mixed viscous raw material can be formed into a predetermined thickness through a paper-making machine raw board.

(d) Once cutting and leveling, the raw board 30 is cut into a predetermined size, and pressure is applied to level it so that its size and thickness are consistent.

(e) Health preservation, the flattened raw board 30 is first subjected to normal pressure curing at 40-65°C, then dehydrated and defilmed, and then subjected to high-pressure curing at 150-210°C to make the material of the raw board 30 appear physical properties.

(f) Drying: Dry the raw board 30 at a working temperature of 120-170° C. for 30-50 minutes to completely dry the raw board to obtain the green building material calcium silicate board preliminary product 40 .

In the above method of making calcium silicate board using waste glass powder, the industrial waste recycled material 12 used includes 5-15% of waste zeolite catalyst, 5-20% of waste glass powder and 5-20% of Quartz brick grinding sludge; Among them, "waste zeolite catalyst" is a by-product of the heavy oil cracking process in the oil refining industry. The results of toxicity dissolution tests show that it is a harmless industrial waste, and its main components are about 41% Al ₂ O ₃ And SiO ₂ about 45%, has the characteristics of partial non-crystalline phase and Buzuolan reactivity, and the rest of the ingredients are Fe ₂ O ₃ , CaO, MgO. The high-fineness amorphous _SiO2 spent zeolite catalyst has relatively high reactivity, that is, under the alkalinity induction of calcium hydroxide, a cement hydration product, it can quickly react with CH to form hydrated calcium silicate colloid ( CSH), contribute to the improvement of concrete strength and hardening performance.

As for "waste glass powder", as mentioned above, it can be crushed from waste solar photovoltaic panels after removing the polymer encapsulant and metal. The obtained waste glass powder is composed of SiO ₂ , and SiO ₂ accounts for 68~75%. It can be used as a raw material for fiber-reinforced cement boards; in addition, solar photovoltaic panels are mainly composed of glass, aluminum, silicon, copper, precious metals and polymer packaging adhesives. After proper classification and dismantling, they can be discarded by pyrolysis or stripping. Polymer encapsulant removal on solar photovoltaic panels.

And, the source of "quartz brick grinding sludge" is mainly the wastewater produced in the quartz brick manufacturing process of refractory, clay building materials and other ceramic products manufacturing industries. The sludge produced after wastewater treatment equipment is also inorganic sludge. The main components of XRF analysis are SiO ₂ and Al ₂ O ₃ , SiO ₂ accounts for 68.0~78.0%, Al ₂ O ₃ accounts for 14.0~20.0%, and the inorganic sludge is a mixture of silica and aluminate, which can be used as a haze material. As a raw material for the manufacture of fiber reinforced cement boards.

Because the initial material 10 comprises 5-15% waste zeolite catalyst, 5-20% waste glass powder and 5-20% quartz brick grinding sludge and other industrial waste regenerated materials 12, it can reduce The cost of using raw materials in low-production system and at the same time play the function of recycling and reuse, making good use of recycled environmental resources, and the finished calcium silicate board finished product 40 has high strength, light weight, fire prevention, durability, heat insulation, and sound insulation , environmental protection, easy construction, strong anti-mildew and anti-bacterial ability, etc. Its samples have been tested by the SGS material and engineering laboratory, and all of them can meet the requirements of CNS 13777 on all quality test items of fiber reinforced cement boards. It is the best fireproof non-combustible building materials.

In particular, the industrial waste recycled materials 12 other than the basic materials 11 in the primary material 10 include waste zeolite catalysts, waste glass powder and quartz brick grinding sludge, which are rich in silicon dioxide, which not only contributes to Reduce the cost of recycling industrial waste recycled materials, and when one of the sources of industrial waste recycled materials is reduced or out of stock, it can also strike a balance among other types of industrial waste recycled materials, with a relatively more active and reliable means , to reduce the production risk of the upstream industry reducing production or shutting down and unable to maintain the normal production line.

As shown in [Fig. 2] and [Fig. 4], the present invention uses the waste glass fritted calcium silicate board manufacturing method. During implementation, these raw boards 30 may produce or more after cutting once through the step (d). Therefore, after the multiple green boards 30 pass through the step (d), the soft residual materials 31 produced during the cutting of the green boards 30 in the step (d) can be further dispersed and refined. Add back to the step (b) to fuse with the initial materials 10.

As shown in [Fig. 5] and [Fig. 6], the method for making calcium silicate board using waste glass powder in the present invention may further include a step (g) of secondary cutting, and the calcium silicate board is initially The finished product 40 is cut into a size that meets the product requirements, and the final product 50 of the calcium silicate board is obtained.

Similarly, the present invention uses waste glass powder for the production of calcium silicate boards, and further includes a step (g) of secondary cutting, cutting the calcium silicate board preliminary product 40 into a size that meets the product requirements to obtain silicic acid Under the implementation state of the calcium board final product 50, these calcium silicate board preliminary products 40 may also produce more or less hard residues 41 after the second cutting of the step (g), so it can be used in the complex silicic acid After the calcium board preliminary product 40 passes through this step (g), the hard surplus material 41 produced when these calcium silicate board preliminary products 40 are cut in this step (g) is added back to this step (b) and after being pulverized. These initial materials 10 are fused.

Of course, the present invention uses waste glass powder for the production of calcium silicate boards, and further includes a step (g) of secondary cutting, cutting the primary product 40 of calcium silicate boards into a size that meets the product requirements to obtain calcium silicate boards. Under the implementation state of the final product 50 of the board, as shown in [Figure 5] and [Figure 7], after the plurality of green boards 30 pass through the step (d), these green boards 30 are further processed in the step (d) ) The soft residual material 31 produced during cutting is dispersed and refined and added back to the step (b) to fuse with the initial materials 10, and after the plurality of calcium silicate board preliminary products 40 pass through the step (g), the It is preferable to add the hard residual material 41 produced during the cutting of the calcium silicate board preliminary products 40 in the step (g) to the step (b) after being crushed and then merged with the raw materials 10 .

Specifically, the present invention mainly mixes industrial waste regenerated materials containing a set proportion of waste glass powder with basic materials in the step of preparing primary materials. Since waste glass powder is rich in siliceous raw materials, it can not only reduce expensive silicic acid The amount of calcium powder used can reduce the cost of recycling industrial waste recycled materials, and it can also provide another better and feasible way to recycle waste solar photovoltaic panels, which will help waste solar photovoltaic panels to be discarded The goal of sustainable utilization of materials and materials is developed.

In particular, when the source of one type of industrial waste recycled materials is reduced or out of stock, a balance can also be achieved among other types of industrial waste recycled materials, and a relatively more active and reliable means can be used to reduce the risk of production reduction or shutdown of upstream industries. The risk of not being able to maintain the normal production of the production line.

In addition, the calcium silicate board using waste glass powder in the present invention can transform the powder into a compact block material through the pores and channels between the waste glass powder particles through diffusion during the process of high temperature action , resulting in better fire performance.

The technical content and technical features of the present invention have been disclosed above, but those who are familiar with this technology may still make various replacements and modifications based on the disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to those disclosed in the embodiments, but should include various replacements and modifications that do not depart from the present invention, and are covered by the scope of the following patent applications.

10: initial material

11: Basic material

12: Industrial waste recycled materials

20: viscous raw meal

30: raw board

31: Soft remaining material

40: The first finished product of calcium silicate board

41: Hard remainder

50: Calcium silicate board final product

Claims (9)

A calcium silicate board using waste glass powder. The calcium silicate board is mixed with industrial waste recycled materials and basic materials, and then the finished calcium silicate board is obtained through the steps of copying molding, one-time cutting and leveling, health preservation and drying. ; The base material comprises 15-25% by weight of Portland cement, 5-10% by weight of paper pulp, 5-20% by weight of calcium silicate powder, and 3-8% by weight of quicklime ;as well as, The recycled industrial waste material comprises 5-15% by weight of spent zeolite catalyst, 5-20% by weight of waste glass powder, and 5-20% by weight of quartz brick grinding sludge. The calcium silicate board using waste glass powder as described in claim 1, wherein the waste glass powder is pulverized from waste solar photovoltaic panels after removal of polymer encapsulants and metals. A method for manufacturing a calcium silicate board using waste glass powder, comprising the following steps: (a) Prepare the initial material, which includes basic materials and industrial waste recycled materials. The basic materials include Portland cement accounting for 15-25% by weight, pulp accounting for 5-10% by weight, Calcium silicate powder with a percentage of 5-20% and quicklime with a percentage of 3-8% by weight. Glass powder, quartz brick grinding sludge accounting for 5-20% by weight; (b) mixing the ingredients, mixing the initial ingredients, adding water to blend into viscous raw ingredients; (c) copy forming, copying the mixed viscous raw material into a green board with a preset thickness; (d) Cutting and leveling at one time, cutting the raw board into a preset size, and applying pressure to level it so that its size and thickness are consistent; (e) Health preservation, the flattened raw board is first subjected to normal pressure curing at 40-65°C, then dehydrated and defilmed, and then subjected to high-pressure curing at 150-210°C to make the raw board material show physical properties; (f) Drying: Dry the raw board for 30-50 minutes at a working temperature of 120-170°C to completely dry the raw board to obtain the green building material calcium silicate board primary product. The method for making calcium silicate boards using waste glass powder as described in claim 3, wherein, in the method for making calcium silicate boards using waste glass powder, after the multiple raw boards pass through the step (d), these The soft residual material produced during the cutting of the green board in the step (d) is dispersed and refined and then added back to the step (b) to fuse with the raw materials. The manufacturing method of calcium silicate board using waste glass powder as described in claim 3, wherein, the manufacturing method of calcium silicate board using waste glass powder further includes a step (g) secondary cutting, the calcium silicate The finished product of the board is cut into the size that meets the product requirements, and the final product of the calcium silicate board is obtained. The manufacturing method of calcium silicate board using waste glass powder as described in claim 3, wherein, the manufacturing method of calcium silicate board using waste glass powder further includes a step (g) secondary cutting, the calcium silicate The finished product of the board is cut into a size that meets the requirements of the product to obtain the final product of the calcium silicate board; (g) The hard residue produced during cutting is added back to the step (b) after crushing to fuse with the initial materials. The manufacturing method of calcium silicate board using waste glass powder as described in claim 3, wherein, the manufacturing method of calcium silicate board using waste glass powder further includes a step (g) secondary cutting, the calcium silicate The finished product of the board is cut into the size that meets the product requirements to obtain the final product of the calcium silicate board; and, after the multiple raw boards pass through the step (d), the raw boards are produced during the step (d) cutting After the soft residual materials are dispersed and refined, they are added back to the step (b) to be fused with these initial materials; The hard residue produced when the finished product is cut in the step (g) is added back to the step (b) and the some raw material fusion. The method for making calcium silicate board using waste glass powder as described in any one of claims 3 to 7, wherein, the method for making calcium silicate board using waste glass powder passes through a papermaking machine in step (c) The mixed viscous raw material is made into a green board with a preset thickness. The method for making calcium silicate board using waste glass powder as described in any one of claims 3 to 7, wherein the waste glass powder is pulverized from waste solar photovoltaic panels after removal of polymer encapsulant and metal .

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