KR200333939Y1 - Porous block, brick and tile for sidewalk made by waste glass - Google Patents

Abstract

The present invention relates to a porous waste glass molded product and a method for manufacturing the same, and more specifically, the porous waste glass block for a press, the porous waste glass molded article, the brick or tile of the porous waste glass molded product of the present invention is 99 ~ 99.5 It consists of 0.5% to 1% by weight of the fusion aid and the fusion rate, characterized in that the porosity is 15% to 40%, the manufacturing process is a step of crushing the raw material waste glass to screen the waste glass particles of 2-15mm size; Mixing 99 to 99.5% by weight of the waste glass particles and 0.5 to 1% by weight of a fusion aid; Quantitatively loading the mixture into a refractory mold; The mixture loaded on the refractory mold is heat-treated at a temperature of 700 ° C. to 850 ° C. to form a fusion process and a demolding process to partially fuse the waste glass particles. Porous waste glass block, brick or tile for the press, the porous waste glass molded product according to the present invention has a high porosity, excellent water permeability, beautiful appearance by utilizing various colors of waste glass as it is, and made of glass alone, and is environmentally friendly. In addition, there is an effect that can significantly improve the recycling rate of waste glass.

Description

Porous block, brick and tile for sidewalk made by waste glass}

The present invention relates to a porous waste glass molded product and a method of manufacturing the same. More specifically, the porous waste glass molded product of the present invention is composed of 99 to 99.5% by weight of waste glass particles of 2-15mm size and 0.5 to 1% by weight of fusion aid, and the waste glass particles and the particles are partially fused. Characterized in that the porosity is 15 ~ 45%, the method for producing a porous waste glass molded product of the present invention is a step of crushing waste glass particles of 2-15mm size by crushing the raw waste glass; Mixing 99 to 99.5% by weight of the waste glass particles and 0.5 to 1% by weight of a fusion aid; Quantitatively loading the mixture into a refractory mold; A molding step of partially fusion of the waste glass particles by heat-treating the mixture loaded on the fire mold at a temperature of 700 ° C. to 850 ° C .; Slowly cooling the molded article and demolding it; Characterized in that consists of.

The glass molded product according to the present invention has high porosity, excellent permeability, beautiful appearance, and environmentally friendly, such as brick, block, tile, artificial reef, etc. requiring permeability and breathability or environment-friendly and beautiful aesthetics. It is suitable for applications such as sidewalk blocks (including brick or tile shapes), roadblocks on roadsides or landscaping blocks in parks, or artificial reefs that should not emit pollutants or exterior tiles of buildings.

Glass waste can be classified into flat glass, bottle glass, fiber glass and optical glass. However, their recycling status is relatively low compared to metals and plastics. Waste glass recycling methods proposed to date have been recovered and reused or recycled as raw glass for glass products. If it is not possible to reuse it, it is only possible to mix it with concrete, or to make glass beads and use them for pavement. The demand is minimal, and the glass powder (less than 100㎛) generated during the production of glass beads for road marking is Since it cannot be used due to the function of the glass for road marking paints, there is a disadvantage that the glass fine powder generated about 10,000 tons per year is left as waste glass again. (Thesis: Ph.D. Hyun-Sung Hyun / Institute of Ceramic Technology, Feb. 1999

In addition, a method of recycling to foamed glass is also proposed, but when the foamed glass is made by using waste glass mixed with various kinds of glass, which are not glass having a specially adjusted composition as a foam for glass, and which have many differences in chemical composition, foaming of the glass It is difficult to manufacture the foam glass, such as a lightweight insulation material having a low density, in particular, more difficult situation. (Excerpt: The recycling of Waste Glass: Professor Chul-tae Lee / Dankook University, Prospectives of industrial chemistry.Vol. 3. No. 2., 2000)

Conventionally, a method of manufacturing bricks or tiles using waste glass has been proposed, using waste glass which is an industrial waste. As an example of the conventional brick manufacturing method using waste glass, a method of mixing waste glass with waste gypsum, lime, clay minerals, etc., and firing it has a value as a brick, but has a low mixing ratio of waste glass and thus its low utilization. Had. In addition, due to the use of dense lime or clay, the permeability and air permeability are greatly deteriorated. As a result, the soil in the lower part of the brick is completely blocked from the air in the upper part, and various kinds of microorganisms in the soil cannot be inhabited. In addition, the manufacturing method of the brick using the conventional waste glass has a disadvantage that a lot of energy loss because the firing temperature reaches 1000 -1100 ℃. In addition, a product in which waste glass is pressed and molded together with a binder such as an adhesive has been proposed, but this also has problems in environmental pollution and strength and permeability.

As another prior art using waste glass, Japanese Patent Laid-Open No. Hei 11-1988711 discloses an interlocking sidewalk block in which glass is added. Low re-utilization and lack of breathability, of course, there is a problem that can not overcome the environmental damage of the concrete.

The present invention is to solve the problems of the prior art as described above by using only waste glass to provide a porous waste glass molded product and a method of manufacturing the same to greatly increase the utilization of waste glass as industrial waste.

In addition, the present invention is to provide a porous waste glass molded article having a high porosity and excellent permeability and breathability and a method of manufacturing the same.

Still another object of the present invention is to provide an environmentally friendly porous waste glass molded product and a method of manufacturing the same.

The object of the present invention is to uniformly mix 99 ~ 99.5% by weight and 0.5 ~ 1% by weight of fusion aid of 2-15mm waste glass particles loaded on a refractory mold of the shape to be molded in 700 ℃ to 850 in a heating furnace It can achieve by heat-processing at the temperature of ° C, and partially fusion and shaping the waste glass particles.

Figure 1a is a cross-sectional structure of the porous waste glass molded article according to the present invention.

Figure 1b is a photograph of the surface of the porous waste glass molded article according to the present invention.

Figure 2a to 2c is a roadside protection area composed of a roadside protection block according to the present invention.

Figure 3a to 3d is a photograph of the porous waste glass molded article according to the present invention.

Explanation of symbols on main parts of drawing

1: porous waste glass molded products

10: waste glass particles 20: fusion aid

30: fusion part 40: void

The present invention relates to a porous waste glass molded product and a method of manufacturing the same.

The porous waste glass molded product of the present invention is composed of 99% to 99.5% by weight of waste glass particles and 0.5 to 1% by weight of fusion aid of 2-15mm in size, and the waste glass particles and the particles are partially fused to have a porosity of 15 to 40%. It is characterized by being%.

The manufacturing method of the porous waste glass molded product is a step of crushing the raw waste glass to sort the waste glass particles of 2-15mm size; Mixing 99 to 99.5% by weight of the waste glass particles and 0.5 to 1% by weight of a fusion aid; Quantitatively loading the mixture into a refractory mold; A molding step of partially fusion of the waste glass particles by heat-treating the mixture loaded on the fire mold at a temperature of 700 ° C. to 850 ° C .; Slowly cooling the molded article and demolding it; Characterized in that consists of.

The porous waste glass molded product according to the present invention has high porosity, excellent permeability and breathability, and preserves a variety of colors of waste glass as it is, making it beautiful and beautiful, made of glass, which is environmentally friendly. It is particularly suitable for applications such as roadblocks of trees or landscape trees in parks, interior and exterior tiles of buildings or artificial reefs. The shapes of the bricks, blocks, tiles, artificial reefs and the like can be molded into conventional known shapes. For example, any of a variety of shapes, such as a rectangular or tetrahedron or an hexahedron of the English letter "S", or a shape (1) for constituting an existing roadside tree or landscape protection guard in a park shown in FIGS. 2A to 2C. It can be molded into.

In the porous waste glass molded article according to the present invention and a method for producing the waste glass, waste glass that is not to be recycled as a raw glass, for example, liquor bottles, beverage bottles, cosmetic bottles, pesticide bottles, medicine bottles, etc. Lamps from fluorescent lamps, TV picture tubes, etc., waste glass from building window glass, plate glass such as automobile glass, glass fiber or tableware, etc. may be used as raw materials. The waste glass is crushed and used to sort waste glass particles having a size of 2-15 mm (hereinafter referred to as "cullets"). In the present invention, by adjusting the particle size (particle size or particle distribution) of the waste glass to a size of 2-15mm, it is possible to secure the porosity and the appropriate strength of the molded product. If the size of the pallet is smaller than 2 mm, the strength is increased but the porosity is lowered. If it is larger than 15 mm, the porosity is increased but the strength is lowered.

The pallet is a mixture of various colors having the same color as raw materials such as empty bottles, lamps, plates, glass fibers or tableware. As a result, the molded product is partially fused to a part of the surface between the particles of the glass and the particles of different colors, thereby obtaining a beautiful product in which the various colors of the raw material glass are intact.

The fusion aid that can be used in the present invention consists of a combination of inorganic materials capable of achieving glass surface crystallization, the preferred composition is 50-70 parts by weight of silicon dioxide (SiO ₂ ), 15-25 weight of alumina (Al ₂ O ₃ ) parts of iron oxide (Fe ₂ O ₃₎ is 5 to 10 parts by weight of sodium (Na ₂ O) a composition consisting of 0.5 to 1 part by weight of calcium (CaO) 10-15 parts by weight of oxide. The fusion aid is preferably a fine powder of about 150㎛, and form crystals and the surface of the heat treated glass glass particles at a temperature of 700 ℃ to 850 ℃. As a result, the appropriate strength and many voids are formed in the molded article.

The porous waste glass molded product of the present invention is uniformly mixed with 99 ~ 99.5% by weight of the pallet and 0.5 to 1% by weight of the fusion aid to be loaded into a refractory mold of the shape to be molded in the heating furnace 700 ℃ to 850 ℃ It can be prepared by heat-treating at a temperature of to form partial fusion between the pellets, and then gradually cooling and demolding.

The process for producing the porous waste glass molded product of the present invention will be described in more detail. A process for sorting waste glass particles having a size of 2-15 mm by crushing the raw waste glass, and 99 to 99.5 wt% of the waste glass particles and the fusion aid Uniformly mixing 0.5 to 1% by weight, quantitatively loading the mixture into a refractory mold, and heat-treating the mixture loaded on the refractory mold at a temperature of 700 ° C. to 850 ° C. It consists of a molding process and a demolding process of forming by partial fusion.

The porous waste glass molded product (1) of the present invention manufactured by the manufacturing method is composed of 99 ~ 99.5% by weight of waste glass particles (10) of 2-15mm size and 0.5 to 1% by weight of the fusion aid (20) In addition, the waste glass particles 10 are fused to each other (30), are bonded to form a structure of the void 40 is 15 to 40%.

In the present invention, the waste glass particles 10 having a size of 2-15 mm are pulverized using waste crushers such as empty bottles, lamps, plates, glass fibers or tableware, using a crusher, and then fine particles of less than 2 mm and 15 mm. By separating particles exceeding by a conventional screen, a 2-15 mm sized pellet can be obtained.

The waste glass particles and the fusion aid may be uniformly mixed by stirring for 10 to 30 minutes in a conventional stirrer.

The uniformly mixed mixture of the waste glass particles 10 and the fusion aid 20 is loaded in a mold of a refractory material according to a product to be molded. The refractory mold (Mold) is a mold (or mold) made of a refractory material having a strength such as murite, alumina, SiC, etc. and having a soft surface, and one side is opened, the waste glass molding material is loaded through the opening, and one side is opened. It may be a hexahedron, or a fire-resistant mold having an upper mold and a lower mold (or a left mold and a right mold) having a specific shape and structure.

The heat treatment fusion and molding process is carried out in a continuous furnace of 20 to 80 meters in length. The refractory mold loaded with the raw material mixture may be heat-treated in a continuous furnace having a length of 20 to 80 meters for 5 hours to 9 hours to form a partial melt fusion 30. Heat treatment is performed for 1 hour to 2 hours at the maximum temperature of 700 ~ 850 ℃, gradually adjust the passage time of the entry portion and the cooling process exit portion to 2 hours to 4 hours to reach the maximum temperature gradually to reach the maximum temperature Cool slowly. When the maximum heat treatment temperature is lower than 700 ℃, partial fusion or crystallization between the pellets is insufficient to obtain the appropriate strength, and if it exceeds 850 ℃, the fusion between the pellets is vitrified, the porosity and strength is greatly reduced.

The sharp and pointed surface of the scarlet is mixed with the fusion aid and heated to a temperature of 700 ° C to 850 ° C to change the surface into a spherical shape. In case of 200 × 40mm, the refractive strength is more than 7N / ㎠, and in case of KS standard, concrete walkway block size is 5N / ㎠ or more), and the gap between each pallet is maintained by using fusion aid. As a result, when the crystallized glass is erected and the surface is partially fused, the waste glass of various colors is mixed to prevent the cracking phenomenon caused by the expansion coefficient of the different glass caused by the mixing of the color dyes. Can be.

The cooled molded product is demolded to obtain a porous waste glass molded product according to the present invention. In the present invention, the demolding can be easily demolded by forming an inorganic coating film using silicate or alumina powder in the mold.

Hereinafter, the present invention will be described in more detail.

Example 1

995 kg of various colored pellets (10) with a particle size distribution of 3-7 mm were mixed for 10 minutes with a stirrer, 60 parts by weight of silicon dioxide (SiO ₂ ), 15 parts by weight of alumina (Al ₂ O ₃ ), and iron oxide (Fe ₂ O ₃₎ ) 5 kg of a fusion aid (20) consisting of 10 parts by weight, 0.5 parts by weight of sodium oxide (Na ₂ O) and 14 parts by weight of calcium oxide (CaO) was added and mixed again with a stirrer for 30 minutes, followed by a mu of 102 mm in width and 202 mm in height of 80 mm. Using a light material, the pellet was calcined at 1300 degrees (based on the entire inner diameter), and heat treated for 7 hours using a continuous furnace having a length of 50 meters to partially melt the pellets (30). The heat treatment was performed for 1 hour at the maximum temperature of 750 ° C. and 3 hours at the remaining entry and exit portions, and gradually reached the maximum temperature, and gradually cooled and demolded to obtain a brick having a width of 100 mm, 200 mm, and 50 mm in height (FIG. 3a). The strength was measured using a test machine, and the result was 7 N / cm 2, and the void ratio 40 was 24%.

Example 2

993 kg of various colored pellets (10) having a particle size distribution of 7-12 mm are mixed with a stirrer for 10 minutes, 60 parts by weight of silicon dioxide (SiO ₂ ), 15 parts by weight of alumina (Al ₂ O ₃ ), and iron oxide (Fe ₂ O ₃₎ ) 7 kg of a fusion aid (20) consisting of 10 parts by weight, 0.5 parts by weight of sodium oxide (Na ₂ O) and 14 parts by weight of calcium oxide (CaO) was added and mixed again with a stirrer for 30 minutes, followed by mu 202 mm long and 202 mm high and 80 mm high. Using a light material, the pellet was calcined at 1300 degrees (based on the entire inner diameter), and heat treated for 7 hours using a continuous furnace having a length of 50 meters to partially melt the pellets (30). The heat treatment was performed for 1 hour at the maximum temperature of 750 ° C. and 3 hours at the remaining entry and exit portions, and gradually reached the maximum temperature, and gradually cooled and demolded to obtain a block having a width of 200 mm and a width of 200 mm and a height of 50 mm (FIG. 3B), and a bending test As a result of measuring the intensity using the device, the pore 40 was 31%.

Example 3

500 kg of a pellet (10) made of only tempered glass of a 10-15 mm particle size distribution was put into a blender, and again 60 parts by weight of silicon dioxide (SiO ₂ ), 15 parts by weight of alumina (Al ₂ O ₃ ) and iron oxide (Fe ₂ O ₃ ) ₃ kg of fusion aid (20) consisting of 10 parts by weight, 0.5 parts by weight of sodium oxide (Na ₂ O) and 14 parts by weight of calcium oxide (CaO) were added and mixed well for 30 minutes, followed by 303 mm in width, 303 mm in height, and 30 mm in height. The pellets were poured into a refractory mold, and then placed in a fixed furnace (shuttle kilon) and heat-treated for 5 hours to partially fusion the pellet 10. At this time, the maximum temperature was 800 ℃, and the maximum temperature was maintained for 1 hour, and it took 2 hours for each temperature step to raise the maximum temperature, and the cooling time was slowly lowered to 2 hours. Through this process, a tile having a width of 300 mm and a length of 300 mm and a thickness of 15 mm was obtained (FIG. 3C). The void ratio 40 of the tiles obtained in this example was 40%.

Example 4

996 kg of pellets (10) mixed with various color pellets having a particle size distribution of 2-5 mm, 60 parts by weight of silicon dioxide (SiO ₂ ), 15 parts by weight of alumina (Al ₂ O 3), and iron oxide (Fe ₂ O ₃₎ ) 4 kg of fusion aid (20) consisting of 10 parts by weight, 0.5 parts by weight of sodium oxide (Na ₂ O), and 14 parts by weight of calcium oxide (CaO) is added to a blender, mixed well for 30 minutes, and then used for a conventional concrete brick process. After inserting into the interlocking block mold prepared by the automatic feeding machine using a press machine, it forms a shape by vibrating and pressurizing for 30 seconds, then naturally dried for 2 days, dried to the desired shape with the same dimensions as the mold, and loaded on a SiC board. The heat treatment was performed under the same conditions as in Example 1 to partially melt 30 the pellets 10 to obtain an interlocking block (FIG. 3D).

The strength was tested using a bending tester and the void ratio 40 was 15%.

Porous waste glass molded product according to the present invention has the effect of dramatically increasing the recycling rate of waste glass because only waste glass as a raw material. Porous waste glass molded product of the present invention has a high porosity (15-40%) and a certain level of strength, so that it is suitable for the use of bricks, blocks, tiles, or artificial reefs.

When the porous waste glass molded product of the present invention is used as a brick or a block for sidewalks or as a block for constructing a landscape tree guard on a roadside or in a park, the porosity is high and the water permeability is excellent, thus preventing flood damage and sliding of pedestrians in rain. Not only does it have good ventilation, but it also contributes to the prevention of urban heat islands, and in particular, it is not necessary to distinguish between sidewalk bricks and blocks and roadside trees or landscaped water protection blocks in parks. There is no need to install the roadside guards separately, and thus there is an effect that can prevent the inconvenience and danger of passers-by.

In addition, due to the diffuse reflection of light and the color of the color of the waste glass mixture, it is possible to create a gorgeous urban aesthetic without the addition of pigments and to use the waste glass without using cement or other industrial adhesives. Because it is made of glass material can be recycled again and does not cause secondary pollution.

When the porous waste glass molded product of the present invention is used as an artificial reef, the artificial reef of the present invention is made of glass and is more environmentally friendly than conventional artificial reefs made of concrete. It is easy to purify when water is passed, and provides a good ecological environment by maximizing the surface area of the porous material to provide a living environment such as shellfish and small fish, and also creates a clean propagation environment such as plankton and seaweed. Superior environmentally friendly artificial reefs are possible.

When the porous waste glass molded product of the present invention is used as interior and exterior tiles of a building, even if a thin molded product is made, it has a certain strength (for example, about 10 mm), so it is easy to install and various colored pallets are used. Depending on the content of the combination, paintings and forms with various artistry can be expressed, and the lighting effect can be obtained by the diffuse reflection effect of the glass itself.

Claims (2)

99 to 99.5% by weight of the waste glass particles (10) of the size of 2-15mm and 0.5 to 1% by weight of the fusion aid (20), the waste glass particles 10 are fused to each other (30), the pores (40) Covering porous waste glass blocks, bricks or tiles for the sidewalk, characterized in that the ratio is 15% to 40%. According to claim 1, wherein the fusion aid 20 is 50-70 parts by weight of silicon dioxide (SiO ₂ ), 15-25 parts by weight of alumina (Al ₂ O ₃ ), 5-10 parts by weight of iron oxide (Fe ₂ O ₃ ) , Composition consisting of 0.5-1 part by weight of sodium oxide (Na ₂ O), 10-15 parts by weight of calcium oxide (CaO), porous waste glass block for the sidewalk, characterized in that the crystallized with the surface of the waste glass particles, brick or tile .