KR101752283B1 - The manufacturing method of light weight aggregate and construction material using waste from glass - Google Patents

Abstract

The present invention relates to a method for producing a waste glass comprising the steps of: pulverizing waste glass; Mixing the pulverized waste glass and the foaming agent; And a step of heating and firing the waste glass in which the blowing agent is mixed, by using the waste glass.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lightweight aggregate and a method of manufacturing a lightweight aggregate and a construction material using waste glass,

The present invention relates to a lightweight aggregate and a method of manufacturing a building material using waste glass.

With the progress of industrialization, various industrial wastes are increasing. Glass has a high value as a material to be used in various products or parts ranging from substrates for electronic products, cathode-ray tubes, LCDs (liquid crystal displays) to food packages.

However, the glass used for a specific product is not recycled but is disposed of. For example, glass used for a cathode ray tube (CRT), an LCD, and the like is discarded in a state in which the coating materials are applied, so that the glass is not recycled and disposed of in a landfill.

Such a landfill method has various problems such as landfill, cost of disposal, environmental pollution, and the like.

On the other hand, various demands are being made regarding the quality of building materials as well as the high-rise buildings. In particular, non-structural building materials that do not bear the load directly must have structural merits because of their light weight, and they must have the facilities advantages such as soundproofing, heat insulation and heat resistance.

However, existing non-structural building materials are made of petrochemical products such as styrofoam or wood, and are vulnerable to fire or sick house syndrome.

The present invention aims at providing a new concept building material which can solve buried waste glass and solve environmental problems, and can replace existing non-structural building materials.

A method of manufacturing a building material using waste glass according to the present invention includes the steps of: pulverizing waste glass; Mixing the pulverized waste glass and the foaming agent; And heating and firing the waste glass in which the blowing agent is mixed.

The mixing ratio of the pulverized waste glass and the foaming agent can be controlled by predetermined conditions.

The particle size of the foaming agent can be controlled by predetermined conditions.

The blowing agent may be any one of calcium carbonate, carbon black, and sodium carbonate, or a mixture thereof.

The waste glass is pulverized by a first pulverizer and a second pulverizer, the first pulverizer including: a hollow main body into which waste glass is supplied; And a crushing unit disposed inside the main body and moving up and down to crush the waste glass, and the second crusher may be a drum type precision crusher to which pulverized waste glass is supplied from the first crusher.

In the first crusher, the crusher may further include a main shaft penetrating the main body as a rotation axis of the crushing unit and screwed to one side of the main body.

The crushing section comprises: an impeller disposed radially; And a projecting blade disposed on one surface of the impeller.

And separating the pollutants from the waste glass before the pulverization of the waste glass and the mixing of the foaming agent.

Wherein the pollutant is separated by a separator and the second crusher comprises a discharge line for supplying pulverized waste glass to the separator, wherein the discharge line is provided with a sieve filter The separator comprising: a basket to which waste glass is supplied from the second crusher; A driven shaft connected to the first supporting member to support the basket and having the first cam disposed therein; And a second cam disposed opposite to the first cam and disposed to be spaced apart from the driven shaft and including a driving shaft for rotating the basket, wherein the basket includes a first cam and a second cam by rotation of the driving shaft, The pendulum motion can be performed by the interaction of the pendulum.

Wherein the separator comprises: a second supporting member for supporting the driven shaft; A linear actuator connected to the second support member; Further comprising a bearing disposed between the second support member and the driven shaft, wherein the basket is capable of performing a reciprocating lifting and lowering motion by the action of the linear actuator while performing pendulum movement.

In the present invention, it is desired to provide an eco-friendly building material utilizing the buried waste glass. Further, it is intended to provide lightweight building materials by foaming waste glass. Furthermore, when used as a non-proof wall, soundproofing, insulation, and heat resistance are required.

1 is a conceptual view showing a method of manufacturing a building material using the waste glass of the present invention.
2 is a conceptual diagram showing a first crusher of the present invention.
3 is a conceptual sectional view showing the first crusher of the present invention.
4 is a conceptual diagram showing a second pulverizer of the present invention.
5 is a conceptual view showing a separator of the present invention.
6 is a conceptual diagram showing the mixer of the present invention.
7 is a conceptual view showing a firing furnace of the present invention.
8 is a graph showing porosity and pore size according to the mixing ratio and the particle size of the foaming agent in the present invention.
9 is a photograph showing the building material of the present invention of the present invention.
10 is a flowchart of the present invention.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to the other component, It is to be understood that another element may be "connected "," coupled ", or "connected" between elements.

Hereinafter, a method of manufacturing a building material using the waste glass of the present invention will be described with reference to the drawings. 2 is a conceptual view showing a first crusher according to the present invention, FIG. 3 is a conceptual sectional view showing a first crusher according to the present invention, FIG. 3 is a conceptual view showing a first crusher according to the present invention, FIG. 4 is a conceptual view showing a second crusher according to the present invention, FIG. 5 is a conceptual view showing a separator of the present invention, FIG. 6 is a conceptual view showing a mixer of the present invention, FIG. 8 is a graph showing porosity and pore size according to mixing ratio and particle size of the foaming agent in the present invention, FIG. 9 is a photograph showing a building material of a comparative example of the present invention, and FIG. And Fig. 11 is a flowchart of the present invention.

The method for manufacturing a building material using the waste glass of the present invention comprises the steps of crushing waste glass (S1, hereinafter referred to as the first step) and separating the contaminants from the crushed waste glass (S2, A step (S3) of mixing pulverized waste glass and a foaming agent, and a step (S4) of heating the waste glass in which the foaming agent is mixed, followed by foaming and firing (S4). The kind of waste glass used in the present invention is not limited. In particular, it should be noted that glass which is used for a cathode-ray tube, an LCD, etc. and can not be recycled but disposed of in a landfill manner can also be used. For reference, in the fourth step, which will be described later, the waste glass is completely burned by pressurization heating, so that contaminants existing deep inside the surface or the inner surface of the glass which can not be recycled can be completely removed.

The first step (S1) is a step of pulverizing waste glass. In the first step S1, the waste glass can be finely pulverized to a size of 100-200 mu m. The first crusher 100 and the second crusher 200 may be used for crushing the waste glass in the first step S1.

The first crusher 100 may be designed to crush the waste glass to a predetermined size (approximately 1-5 cm 3) by a pretreatment crusher. A typical mechanical pre-treatment consists of a main body to which waste glass is supplied and housed, and a rotating blade that rotates inside the main body. However, such a conventional pretreatment crusher has not been able to perform its role properly due to its crushing ability.

The first crusher 100 of the present invention may include a main body 110, a supply unit 120, a discharge unit 130, and a crushing unit 140.

The main body 110 can be supplied with waste glass by a known hollow tank. The upper portion of the main body 110 is opened and can be connected to the supply part 120 through which the waste glass is supplied. Generally, the feeder 120 may be a conveyor belt. In addition, a discharge portion 140 through which the primary pulverized waste glass is discharged may be formed in the lower portion. A screw hole 111 may be formed on the bottom surface of the main body 110. A crushing unit 140 having a main shaft 150 as a rotation axis may be disposed inside the main body 110. A main shaft 150 passing through the center of the main body 110 may be disposed on a bottom surface of the main body 110.

The main shaft 150 may be formed as a rotary shaft, and the crushing unit 140 may be disposed at the upper portion thereof, the screw portion 151 may be formed at the middle portion thereof, and the first helical stroke 153 may be formed at the lower portion thereof . The main shaft 150 passes through the bottom surface of the main body 110 and the threaded portion 151 of the main shaft 150 can be engaged with the threaded hole 111 of the main body 110. Accordingly, the upper portion of the main shaft 150 is disposed inside the main body, and the lower portion of the main shaft 150 can be exposed to the outside.

The upper portion of the main shaft 150 may be connected to the crushing unit 140. In this case, a hub rotor 143 may be interposed between the crushing unit 140 and the main shaft 150. The threaded portion 151 of the main shaft 150 can engage with the threaded hole 111 of the main body 110. A first spiral stroke 153 may be formed in the lower portion of the main shaft 150. The first spiral stroke 153 can be connected to the second spiral stroke 157 by a chain 155. The second helical stroke 157 may be formed in the shaft of the first motor 160. The first motor 160 may be an electric motor. The first motor 160 can be controlled to alternate forward rotation and reverse rotation. The first spiral stroke 153 connected by the chain 155 is rotated forwardly or reversely when the first motor 160 performs the forward rotation or the reverse rotation and the second spiral stroke 157 performs forward rotation or reverse rotation, Or reverse rotation. Further, the main shaft 150 integrally formed with the first spiral stroke 153 can also be driven to move up and down in the forward or reverse direction. As a result, the crushing unit 140 connected by the main shaft 150 and the hub rotor 143 can also be raised and lowered. According to the above description, the first crusher 100 of the present invention has a difference in that the crusher 140 is moved up and down and rotated forward or reverse as compared with a known pretreatment crusher. As a result, the crushed parts of the waste glass are popped by the crushing part 140, and the flow of scattering is seen, so that the crushing ability can be increased. Further, the first spiral stroke 153 and the second spiral stroke 157 help to smoothly drive such a three-dimensional Archimedes spiral. The crushing part 140 may be in the form of a radially branched impeller 145. On one surface of the impeller 145, a projection 147 protruding upward can be formed. As a result, the flow of the waste glass can be promoted. The waste glass that is first crushed by the crushing unit 140 in the first crusher 100 may be discharged to the second crusher 200 after being discharged through the discharge unit 130.

The second mill 200 may be a well-known drum type precision mill. The primary pulverized waste glass can be finely pulverized in the second pulverizer 200 to a size having a particle size of approximately 100-200 탆. The second mill 200 may include a discharge line for supplying the finely pulverized waste glass to the separator 300. In this case, the discharge line may be in the form of a discharge tube. The waste water line may be provided with a sieve filter plate 132 through which waste glass supplied from the waste glass to the separator 300 passes. That is, the sieve filter plate 132 is disposed on the return line supplied to the separator 300, and the sieved fine glass can be sieved by the sieving principle. As a result, only the fine waste paper that matches the predetermined size (size suitable for plastic deformation) can be supplied to the separator 300.

In the first step S1, the waste glass may be pulverized into fine particles and supplied to the separator 300 through the process described above.

The second step S2 is the step of separating the pollutants from the pulverized waste glass. In the second step S2, the contaminants can be separated by the separator 300. In the second step S2, the pulverized waste glass and contaminants can be separated by specific gravity difference or sieving. In general, a glass which is used for a cathode ray tube (CRT), an LCD, or the like and can not be recycled and disposed of in a landfilled manner, can be coated or adhered with a coating material or the like to form a scale. These contaminants may be desorbed during the grinding process, but still remain mixed with the waste glass. The pollutants may be removed during the firing process described below, but if the fuels are heated in the firing furnace containing the pollutants, there is a problem that the quality can not be maintained. In the second step (S2), such contaminants are separated and removed to secure the uniformity of quality.

The separator 300 includes a basket 310 receiving the pulverized waste glass from the discharge line 132 of the second pulverizer 200, first and second support members 312 and 330, a driven shaft 320, a drive shaft 340 ).

The basket 310 may have a shape in which an inner space is formed by a side surface and a bottom surface curved downward. The basket 310 may be supplied with pulverized waste glass from the second pulverizer 200. The basket 310 may be positioned below the driven shaft 320. The basket 310 may be connected to the driven shaft by the first support member 312. The basket 310 may be connected to the first support member 312 and supported by the follower shaft 320.

The driven shaft 320 can be connected to the basket 310 by the first support member 312 in the form of a rod. In this case, the first support member 312 may be formed as a flat plate having a triangular shape, a base connected to the basket 310, and an upper vertex portion connected to the driven shaft 320 so as to be integrally formed.

A plurality of first cams 321 may be disposed in the longitudinal direction of the driven shaft 320. The driven shaft 320 and the driven shaft 340 may be spaced apart from the driven shaft 320 at an upper portion thereof. The drive shaft 340 may be provided with a plurality of second cams 341 in the longitudinal direction. The first cam 321 of the driven shaft 320 and the second cam 341 of the drive shaft 340 can be opposed to each other. The driving shaft 340 is connected to the second motor 342 and can rotate. The second cam 341 can periodically push the first cam 321 by the rotation of the drive shaft 340. [ The driven shaft 320 integrally coupled to the first cam 321 by the force that the second cam 341 pushes the first cam 321 can perform the first operation alternating between the forward rotation and the reverse rotation have. That is, the driven shaft 320 rotates in the rotational direction of the drive shaft 340 by the force that the second cam 341 pushes the first cam 321, Thereby performing a first operation that is reversed. The basket 310 can perform pendulum movement by the interaction of the first and second cams 321 and 341 due to the rotation of the drive shaft 340.

Both ends of the driven shaft 320 can be connected to the vertical second support member 330. Thus, the driven shaft 320 can be supported by the second support member 330. In this case, a bearing 322 may be interposed between the driven shaft 320 and the second support member 330. As a result, the driven shaft 320 can be rotatably supported by the second support member 330.

The second support member 330 may be coupled to the linear actuator 331 to move up and down. A known technique (for example, a linear motor) may be used as the linear actuator 331. [ In the present invention, a hydraulic cylinder was used. The linear actuator 331 may be disposed below the second support member 330. The linear actuator 331 can lift the second support member 330 by the action of the hydraulic cylinder. The linear actuator 331 can lift and lower the second support member 330 by the action of the hydraulic cylinder. In this case, the driven shaft 320, which is supported at both ends by the second support member 330, can perform the second operation of reciprocatingly moving up and down. At first, it may be desirable for the second support member 330 to descend. This is because the first cam 321 and the second cam 341 may inadvertently contact with each other when the second support member 330 ascends first. When the driven shaft 320 moves up and down, the basket 310 connected by the driven shaft 320 and the first supporting member 312 can reciprocate.

The basket 310 can perform the pendulum motion by the interaction of the first and second cams 321 and 341 driven by the second motor 342. In addition, the basket 310 can be moved up and down by driving the linear actuator 331. When the second motor 342 and the linear actuator 331 are operated together, the basket 310 can simultaneously perform pendulum movement and elevation movement. As a result, the pollutants mixed and carried in the basket 310 and the pulverized waste glass can be scattered and separated in the course of the pendulum movement and the lifting movement of the basket 310. For example, contaminants with relatively low specific gravity can be removed farther away than pulverized waste glass. The separator 300 of the present invention can simultaneously perform the pendulum motions and the elevating motions, so that the separation efficiency due to the specific gravity difference can be enhanced.

In the second step S2, the pollutants may be removed from the pulverized waste glass through the above-described process.

The third step (S3) is a step of mixing the pulverized waste glass from which the contaminants are separated and the foaming agent. The mixer 400 may be used to mix the waste glass and the foaming agent. The mixer 400 may stir the waste glass and the blowing agent with a known apparatus to produce a mixture. The blowing agent may be any one of calcium carbonate (CaCO ₃ ), carbon black (C), sodium carbonate (Na ₂ CO ₃ ), or a mixture thereof. In a preferred embodiment of the present invention, a calcium carbonate ratio is used as a foaming agent. When the waste glass and the foaming agent are mixed and heated, carbon dioxide is generated in the foaming agent, so that the waste glass can be foamed. In this case, the mixing ratio of the foaming agent can be controlled. Further, the particle size of the foaming agent can be controlled.

In the third step S3, waste glass mixed with the blowing agent may be produced through the above-described process.

The fourth step (S4) is a step of heating the foaming glass mixed with the foaming agent to foam and sinter. The foaming and baking steps may be carried out by heating the continuous glass fired furnace 500 after charging the waste glass in which the foaming agent is mixed. The continuous firing furnace 500 is equipped with a thermostat to form an internal heating temperature ranging from 650 to 1200 ° C. from the inlet to a predetermined section. After the firing, the temperature is lowered to 400 to 500 ° C. to stabilize the foaming agent And is formed to prevent internal residual stress and to prevent cracking. In the fourth step S4, a conveyor belt having a speed regulating device is formed in the continuous firing furnace 500 so that the speed setting can be controlled according to the introduced waste glass mixture. The material of the conveyor belt is a heat-resistant stainless steel Of metal material is used.

In the fourth step S4, fired glass produced through the above-described process can be generated. The molten waste glass can then be dried and / or cooled to produce building material. Further, the cooled foamed glass can be pulverized to produce concrete aggregate. That is, the cooled foamed glass of the present invention may be used as concrete aggregate in place of sand or mixed with sand or the like.

The building material produced by the manufacturing method of the present invention may have an apparent specific gravity of 0.13-0.5. For example, since the waste glass in the case of mixing (mixing ratio: 1%), calcium carbonate (CaCO ₃₎ of 10kg with a blowing agent to 1ton, the molecular weight of calcium carbonate (CaCO ₃₎ 50g / mole, by calcium carbonate (CaCO ₃₎ The generated carbon dioxide (CO ₂ ) is 200 moles. Moreover, carbon dioxide (CO ₂₎ the volume of 1mole, carbon dioxide (CO ₂₎ and 10kg of carbon dioxide (CO ₂₎ of the bubble generated in the 4.48㎥ so 22.4L. According to the above description, when the mixing ratio is 1%, 4.48 m 3 of carbon dioxide is generated per 1 ton of waste glass, and thus a building material having a specific gravity of 0.25 (1 / 4.48) can be produced. Also, it has a porous form by the foaming agent, and the size of pores formed is 0.5-10 mm. That is, since the building material of the present invention is low in specific gravity and porous, it is a lightweight member as compared with conventional concrete, and the pore is excellent in sound insulation effect and insulation effect. However, the construction material of the present invention may have low strength. Therefore, the building material of the present invention needs to control the porosity and pore size.

In the present invention, the porosity can be controlled by adjusting the mixing ratio of the blowing agent in the third step (S3). As shown in FIG. 8A, as the mixing ratio of the blowing agent in the waste glass mixture is increased, the porosity is increased. As a result, the building material is lighter, and the sound insulation effect and the insulation effect are increased. However, the strength becomes smaller. Based on this, it is possible to produce a building material having a predetermined porosity by controlling the mixing ratio of the foaming agent according to the use of the building material of the present invention by predetermined conditions. For example, when the building material of the present invention is used as an outer heat insulating material (non-proof member) or the like, strength is not important, but sound insulation and heat insulation are important. Further, since the building material is used as a non-resistant member, the weight of the structure is advantageously reduced as the weight of the building is reduced. In the present invention, in consideration of such conditions, the mixing ratio of the blowing agent in the waste glass mixture may be increased to produce a building material having a large porosity.

In the present invention, the size of the pores can be controlled by controlling the particle size of the blowing agent in the third step (S3). As shown in Fig. 8B, the larger the particle size of the blowing agent in the waste glass mixture, the larger the pore size. As a result, the building material is lighter, and the sound insulation effect and the insulation effect are increased. However, the strength becomes smaller. Based on this, it is possible to produce a building material having a predetermined porosity by controlling the particle diameter of the foaming agent according to the use of the building material of the present invention by predetermined conditions. For example, when the building material of the present invention is used as an outer heat insulating material (non-proof member) or the like, strength is not important, but sound insulation and heat insulation are important. Further, since the building material is used as a non-resistant member, the weight of the structure is advantageously reduced as the weight of the building is reduced. In the present invention, it is possible to increase the particle diameter of the blowing agent in the waste glass mixture to produce a building material having a large pore size in view of such conditions.

9A and 9B are photographs showing building materials of the present invention. The building material of Fig. 9A was produced under the condition that the weight percentage of the foaming agent was large and the particle diameter of the foaming agent was low. As a result, the porosity is large and the pore size is small. The building material of Fig. 9B was produced under the condition that the weight percentage of the foaming agent was low and the diameter of the foaming agent was large. As a result, the porosity is small and the pore size is large. Thus, a building material having various porosities and pore sizes can be manufactured by controlling the weight% and particle size of the blowing agent.

Further, the building material of the present invention is excellent in fire resistance because the main component is a compound similar to sand.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (11)

Pulverizing waste glass by a first crusher and a second crusher;
Separating contaminants from waste glass by a separator;
Mixing the pulverized waste glass and the foaming agent;
Heating the waste glass mixed with the foaming agent to foam and sinter,
The first pulverizer may comprise:
A hollow body into which waste glass is supplied; And
And a crushing unit disposed inside the main body, for crushing the waste glass by moving up and down,
Wherein the second grinder comprises:
Wherein the pulverized waste glass is supplied from the first pulverizer,
Wherein the separator comprises:
A basket to which waste glass is supplied from the second mill;
A driven shaft connected to the first supporting member to support the basket and having the first cam disposed therein;
A second support member for supporting the driven shaft;
A linear actuator connected to the second support member;
A bearing disposed between the second support member and the driven shaft;
A second cam disposed to be spaced apart from the driven shaft and opposed to the first cam, and a drive shaft that rotates,
Wherein the basket is made of a construction material utilizing a waste glass which performs a pendulum movement by an interaction between the first cam and the second cam due to the rotation of the drive shaft and performs a reciprocating lifting movement by the action of the linear actuator, ≪ / RTI >
The method according to claim 1,
Wherein the mixing ratio of the pulverized waste glass and the foaming agent is controlled by predetermined conditions.
The method according to claim 1,
Wherein the particle size of the foaming agent is controlled by predetermined conditions.
The method according to claim 1,
Wherein the foaming agent is any one of calcium carbonate, carbon black, and sodium carbonate, or a mixture thereof.
delete The method according to claim 1,
In the first mill,
And a main shaft passing through the main body as a rotation axis of the crushing unit and screwed to one side of the main body.
The method according to claim 1,
Wherein the crushing unit comprises:
A radially arranged impeller;
And a projecting blade disposed on one surface of the impeller.
delete delete delete Pulverizing waste glass by a first crusher and a second crusher;
Separating contaminants from waste glass by a separator;
Mixing the pulverized waste glass and the foaming agent;
Heating the waste glass in which the blowing agent is mixed to foam and firing the waste glass;
And crushing the cooled foamed glass,
The first pulverizer may comprise:
A hollow body into which waste glass is supplied; And
And a crushing unit disposed inside the main body, for crushing the waste glass by moving up and down,
Wherein the second grinder comprises:
Wherein the pulverized waste glass is supplied from the first pulverizer,
Wherein the separator comprises:
A basket to which waste glass is supplied from the second mill;
A driven shaft connected to the first supporting member to support the basket and having the first cam disposed therein;
A second support member for supporting the driven shaft;
A linear actuator connected to the second support member;
A bearing disposed between the second support member and the driven shaft;
A second cam disposed to be spaced apart from the driven shaft and opposed to the first cam, and a drive shaft that rotates,
Wherein the basket has pendulum motions by the interaction of the first cam and the second cam due to the rotation of the drive shaft, and the lightweight aggregate using the waste glass, which performs the reciprocating lifting motion by the action of the linear actuator, ≪ / RTI >

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