KR101524025B1 - Apparatus and method for manufacturing foamed glass - Google Patents

Abstract

When the foamed glass is manufactured by melting, foaming, firing, or quenched while being conveyed by a belt conveyor, the foamed glass is efficiently transported and manufactured.

A belt conveyor device 21 for conveying the mixture on the mesh belt 21b in an even state and passing the same through the firing device; , And a coarse grinding device (40) which is taken out of the firing device by the belt conveyor device (21) and which divides the foamed glass (BG) in a plate form which is rapidly cooled and cracked.

Foaming, glass, foaming agent, melting, foaming, baking, plate, crushing.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for manufacturing a foamed glass,

The present invention relates to a manufacturing apparatus and a manufacturing method of a foamed glass using various glass waste materials such as waste plate glass and waste glass bottle as raw materials.

A foamed glass having a porous structure and a large number of voids in its interior and its surface has been conventionally used as a civil engineering material or an aggregate for building. As a technique for producing such a foamed glass from a glass cullet using a waste glass bottle as a main material, for example, a foamed glass production method disclosed in Patent Document 1 is known.

In the method for producing a foamed glass described in Patent Document 1, the glass collet is finely pulverized, 0.1 to 5.0 mass% of calcium carbonate, silicon carbide, borax and the like are added as a foaming agent, and the mixed fine powder is dispersed in a roller hearth kiln The sheet is placed on the belt continuously and continuously with a thickness of 5 to 50 mm and heated to 700 to 1000 占 폚 in the roller husk kiln so as to be melted, foamed and fired, and the residence time in the kiln is 5 to 60 minutes. Is quenched by exposing it to room temperature or cooled air, or by spraying with water, and by natural deformation caused by the deformation at this time, a frozen glass of pseudo-mass is obtained.

Examples of the foaming agent used for obtaining the foamed glass include magnesium carbonate, sodium hydrogencarbonate, barium carbonate, fine carbon, limestone, dolomite, talc and the like as described in Patent Documents 2 and 3 .

The applicant of the present invention has proposed a method for producing a glass fiber composite material by mixing a mixture obtained by mixing at least one of calcium carbonate, dolomite, silicon carbide and borax in a glass powder having a particle diameter of 5 to 100 μm as described in Patent Document 4, And the glass material is melted, foamed and fired by heating at 600 to 1000 占 폚 by transferring the inside of the firing furnace by means of a belt conveyor to obtain a fired body of 400 占 폚 to 800 占 폚 at room temperature To form a mist-like cooling liquid, and spraying or spraying a cooling gas at a temperature not higher than room temperature. According to this production method, it is possible to efficiently produce a foamed glass having a particle diameter of about 5.0 to 30.0 mm.

Patent Document 1: Japanese Patent Application Laid-Open No. 10-203836

Patent Document 2: Japanese Patent Application Laid-Open No. 2004-34596 (paragraph 0006)

Patent Document 3: Japanese Patent Publication No. 2000-317316 (paragraph 0012)

Patent Document 4: JP-A-2004-67400

However, as described in Patent Document 4, when melted, foamed and fired while being conveyed on a belt conveyor, the foamed glass formed in the firing furnace is in the form of a plate, and cracks are generated by the subsequent quenching, Therefore, the situation is bad when it is transferred to the next process.

Therefore, the present invention provides a manufacturing apparatus and a manufacturing method of a foamed glass capable of efficiently manufacturing a foamed glass by producing the foamed glass by melting, foaming, firing, or quenched while being conveyed by a belt conveyor The purpose.

An apparatus for producing a foamed glass of the present invention comprises a sintering apparatus for heating a mixture obtained by mixing a glass powder with a foaming agent and melting, foaming and firing the sintered glass, a belt for conveying the mixture in a state in which the mixture is uniformly conveyed, A conveyor device, and a coarse grinding device which is carried out in a firing device by a belt conveyor device and which divides the plate-like foamed glass which is rapidly cooled and cracked.

The plate-shaped foamed glass formed on the belt of the belt conveyor apparatus by the firing apparatus is taken out of the firing apparatus, quenched and cracked to form a plate-like shape. Thus, in the apparatus for producing a foamed glass of the present invention, the plate-like foamed glass which generates the cracks is divided by the coarse grinding apparatus so that the plate-shaped foamed glass is cracked and separated, do.

Here, it is preferable that the coarse grinding apparatus is provided with a crushing tool for crushing the plate-like foamed glass by moving up and down on the roller at the end of the belt conveyor apparatus. The foamed glass plate on the belt is supported by the belt to hold the plate shape, but receives a bending load due to its own weight by the curved surface of the roller at the end of the belt conveyor apparatus. Therefore, when the crushing tool is lifted up on the roller at the end of the belt conveyor apparatus to crush the plate-like foamed glass, the force of the crushing tool is further applied to the bending load, and the plate- Lt; / RTI >

It is preferable that the shredding tool has a plurality of blades arranged at a predetermined interval in the width direction of the belt, and each of the blades has a long blade surface in the advancing direction of the belt. Thus, the foamed glass plate on the belt is subjected to a bending load due to its own weight by the curved surface of the roller at the end of the belt conveyor apparatus, and the force of the shredding tool is applied at a predetermined interval in the width direction of the belt, It becomes possible to efficiently divide the plate-like foamed glass efficiently with a small force.

The apparatus for producing a foamed glass of the present invention preferably has a sawtooth-shaped ply plate for inserting a plurality of rows of comb-like marks along the advancing direction of the belt on a mixture evenly spread on the belt, at the front end of the sintering apparatus. As a result, it becomes possible to form a uniform foamed glass by spreading heat to the interior of the mixture at the time of firing, and a plurality of rows of grooves are formed on the plate-like foamed glass along the advancing direction of the belt after firing, This makes it easier for the foamed glass to be divided into large pieces.

The method for producing a foamed glass of the present invention is a method for producing a foamed glass according to the present invention comprising a firing step of heating a mixture obtained by mixing a glass powder with a foaming agent and conveying the mixture on a belt of a belt conveyor in an even state, And a coarsely crushing step of coarsely separating the plate-like foamed glass which is taken out by the belt conveyor apparatus and quenched to generate cracks.

According to the method for producing a foamed glass of the present invention, the plate-like foamed glass in which cracks are generated is divided into large pieces, whereby the plate-shaped foamed glass is cracked and separated, and is broken.

(1) A mixture obtained by mixing a glass powder with a foaming agent is melted, foamed, and fired while being conveyed while being evenly conveyed on a belt of a belt conveyor device. The mixture is taken out by a belt conveyor device, The foamed glass in the plate form is separated from the foamed glass by propagating the cracks to obtain the foamed glass in a broken state. This makes it possible to efficiently transport the foamed glass when the foamed glass is produced by melting, foaming, firing, and quenching while being conveyed by the belt conveyor.

(2) By a construction in which the plate-like foamed glass is crushed by the crushing tool which climbs on the roller at the end of the belt conveyor apparatus, the plate-like foamed glass on the belt is bent by the curved surface of the roller at the end of the belt conveyor apparatus, And the force of the shredding tool is applied, so that it becomes possible to divide the plate-like foamed glass into a large size with a small force. As a result, the driving force of the shredding tool can be reduced, and the cost of the apparatus can be suppressed.

(3) The shredding tool has a plurality of blades arranged at predetermined intervals in the width direction of the belt, and each of the blades has a long blade surface in the advancing direction of the belt, Is subjected to a bending load due to its own weight by the curved surface of the roller at the end of the belt conveyor apparatus and the force of the shredding tool is applied at a predetermined interval in the width direction of the belt, It becomes possible to divide it into a large size. As a result, the driving force of the shredding tool can be further reduced, and the cost of the apparatus can be suppressed.

(4) By arranging a plurality of rows of comb-like marks along the advancing direction of the belt on the belt evenly placed on the belt before firing, it becomes possible to form uniform foamed glass by spreading heat to the inside of the mixture during firing In addition, since a plurality of rows of grooves are formed along the advancing direction of the belt on the plate-like foamed glass after firing, the foamed glass is more easily divided along the grooves. As a result, the driving force of the shredding tool can be further reduced, and the cost of the apparatus can be suppressed.

(Best Mode for Carrying Out the Invention)

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a schematic configuration of a foamed glass manufacturing apparatus according to an embodiment of the present invention; and FIG. 2 is a diagram showing a production process in the foamed glass production apparatus of FIG.

1, a foamed glass manufacturing apparatus 10 according to an embodiment of the present invention includes a firing apparatus 20 for heating, foaming, and firing a mixture obtained by mixing a blowing agent with a glass powder, a firing apparatus 20 And a crushing device 30 for granulating the foamed glass formed in the crushing device 30. The crushing apparatus 30 performs crushing 31 and classification 32 of the foamed glass formed in the firing apparatus 20.

The pretensioner 22, the firing furnace 23 and the cooling stand 24 are disposed in the firing apparatus 20 along the conveying direction of the belt conveyor apparatus 21 for conveying the foamed glass raw material. On the downstream side of the preliminary stage 22 and the cooling stand 24, there are disposed intake devices 25, 26 for heat recovery. The intake devices 25 and 26 are heating means for sucking hot air above the belt conveyor device 21 by a fan F and supplying the hot air to another place.

Next, a manufacturing process of the foamed glass in the foamed glass manufacturing apparatus 10 shown in Fig. 1 will be described based on Fig.

As shown in Fig. 2, first, pretreatment 50 is performed on waste glass to be a raw material. In the pretreatment 50, a metal such as a cap or the like mixed in waste glass is removed. Although waste glass is used as a raw material in the present embodiment, it is not limited to this, and general glass materials can be used as a raw material.

The waste glass that has been subjected to the pretreatment process 50 is pulverized to a particle size of about 2 to 5 mm in the primary pulverization process 51 and then to a glass powder having a particle size of about 30 to 100 탆 in the secondary pulverization process 52 And then stored in the glass powder raw material storage part 53. [0064] Then, the foaming agent mixture (54) is performed on the glass powder supplied from the glass powder material storage part (53). In the present embodiment, calcium carbonate as a foaming agent is added to the glass powder in an amount of about 0.5 to 15 mass%, but the present invention is not limited thereto.

The glass powder having passed through the foaming agent mixture 54 is transferred to the belt conveyor apparatus 21 of the firing apparatus 20 shown in Fig. 1 and passes through the preliminary stage 22, the firing furnace 23 and the cooling firing stage 24, 55), thereby forming a foamed glass. In the present embodiment, the firing temperature is 800 to 900 DEG C and the firing time is 30 to 120 minutes, but the present invention is not limited to this. The foamed glass formed through the firing (55) process is crushed in the foamed glass crushing (56) process, and is made into an aggregate having a particle size of about 100 mm, and then stored in the primary storage unit (57).

The massive foamed glass supplied from the primary storage section 57 is pulverized through the foamed glass pulverization process 58 in the pulverizing device 30 shown in FIG. 1 to be granulated to a size of 50 mm or less, Classification and bag filling are performed in the bag filling (59) process. At this time, the classified granular foamed glass having a particle size of 2 mm or less is incorporated into the glass powder before the foaming agent mixing (54) process.

Next, the details of the structure, functions, and the like of various devices constituting the foamed glass manufacturing apparatus 10 will be described with reference to Figs. 3 to 7. Fig.

3 is a schematic diagram showing the vicinity of a storage silo constituting the apparatus 10 for producing a foamed glass of Fig. The storage silo 27 shown in Fig. 3 is for storing the glass powder GP and is disposed in the above-described glass powder raw material storage portion 53 (see Fig. 2). The reservoir silo 27 has a cylindrical portion 27a having the same inner diameter and a funnel portion 27b connected to the lower portion of the funnel portion 27b. The funnel portion 27b has a diameter gradually reduced toward its lower end opening 27c Shape. The vibrating device MB is disposed on the outer surface of the funnel portion 27b and the lower opening 27c of the funnel portion 27b is installed in a position facing the screw conveyor 28. [ The glass powder GP stored in the storage silo 27 is sent from the lower opening 27c to the screw conveyor 28. By vibrating the storage silo 27 by operating the vibrating device MB, GP) can be exported without congestion.

4 is a perspective view showing a part of the belt conveyor apparatus 21 constituting the apparatus 10 for manufacturing foamed glass of Fig. 4, the belt conveyor apparatus 21 (see Fig. 1) mainly includes a plurality of rollers 21a arranged in parallel at predetermined intervals, and a plurality of rollers 21a wound on the rollers 21a 21b. Blending of the foaming agent Mixture (GPM) of the glass powder and foaming agent obtained in the step (54) is evenly spread on the mesh belt 21b of the belt conveyor device 21 as shown in Fig.

On the belt conveyor device 21, the mixture GPM on the mesh belt 21b is uniformly distributed in a thickness of 10 to 20 mm, and the mixture GPM is applied to the mixture GPM along the conveying direction to a depth of 5 to 10 mm and a width of 10 to 20 mm And a serration-type pincushion plate 29 for inserting a plurality of comb-tooth traces 29a is disposed. 5 is a cross-sectional view showing a state in which the comb tooth mark 29a is put on the mixture GPM on the mesh belt 21b. The mixture GPM is evenly spread on the mesh belt 21b by the serrated ply plate 29 and conveyed by the belt conveyor device 21 with the comb trail 29a being put in, 20).

At this time, in the firing apparatus 20, as shown in Fig. 5, not only the upper surface of the mixture GPM but also the comb fingertip 29a put in the mixture GPM by the serrated- (H) during firing to the interior of the mixture (GPM). As a result, heat (H) is uniformly transferred to the interior of the mixture GPM, and a foamed glass having uniform voids is formed.

Fig. 6 is a schematic view showing a foamed glass raw material crushing apparatus constituting the foamed glass producing apparatus 10 of Fig. 1, and Fig. 7 is a perspective view of a crushing tool of the foamed glass raw material crushing apparatus of Fig. 6 is used in the foamed glass pre-grinding process 56 (see Fig. 2). The foamed glass BG formed in the firing furnace 23 is in the form of a plate and is rapidly quenched by contact with the outside air to cause cracks. In this state, the foamed glass BG is excessively large and is conveyed to the primary storage portion 57 It can not be transported, so it is divided by the foamed glass coarse grinding machine 40 into a large size.

6, the coarse grinder 40 includes a shredding tool 41 which is lifted and lowered on the roller 21z at the end of the belt conveyor apparatus 21 and a motor 42 ). The shredding tool 41 has a plurality of blades 43 arranged at predetermined intervals in the width direction of the mesh belt 21b as shown in Fig. Each of the blades 43 has a blade surface 44 that is long in the advancing direction of the mesh belt 21b and inclined with respect to the upper surface of the mesh belt 21b. The inclination of the blade surface 44 is formed such that the rear side in the advancing direction of the mesh belt 21b is lowered.

The foamed glass BG in the form of a plate, which is cracked and conveyed by the mesh belt 21b rotating in the direction of the arrow in FIG. 6, is crushed by the crushing tool 41 raised and lowered by the motor 42. As a result, the foamed glass (BG) becomes an agglomerate (LG) having a particle size of about 10 to 100 mm. This droplet LG falls onto the belt conveyor device 60 for conveying the next process lower than the end of the belt conveyor device 21 and is conveyed by the next process conveying belt conveyor device 60 to the next primary storage device (57) process.

As described above, in the foamed glass manufacturing apparatus 10 of the present embodiment, the plate-like foamed glass BG formed on the mesh belt 21b of the belt conveyor apparatus 21 by the firing apparatus 20 is fired by the firing apparatus 20, (20), and quenched to generate cracks. The foamed glass (BG) in the form of a plate having cracks is divided by the coarse grinder 40 at the end of the belt conveyor device 21, cracks propagate, separated, and broken. This makes it possible to efficiently transport the foamed glass to the next primary storage portion 57 process by the next process transfer belt conveyor device 60.

Particularly, in the foamed glass manufacturing apparatus 10, by using the coarse grinding apparatus 40 having the crushing tool 41 that ascends and descends on the roller 21z at the end of the belt conveyor apparatus 21, The foamed glass BG in the form of a plate on the mesh belt 21b is subjected to a bending load due to its own weight by the curved surface of the roller 21z at the end of the belt conveyor apparatus 21, 41) is applied. Therefore, in this coarse grinding apparatus 40, the plate-like foamed glass BG can be divided into a large number with a small force and the driving force of the motor 42 of the shredding tool 41 can be reduced, 42, it is possible to suppress the production cost and the operation cost of the coarse grinder 40 by using a small output.

The shredding tool 41 is provided with a plurality of blades 43 arranged at a predetermined interval in the width direction of the mesh belt 21b so that the blades 43 are moved in the advancing direction of the mesh belt 21b The force of the crushing tool 41 is applied at a predetermined interval in the width direction of the mesh belt 21b so that the plate-like foamed glass BG can be efficiently efficiently applied with a smaller force, It is possible to divide it into a large size.

In the foamed glass manufacturing apparatus 10 according to the present embodiment, before the firing, a plurality of rows of comb-like marks 29a are formed on the mixture GPM evenly spread on the mesh belt 21b by the serrated- It is possible to form a uniform foamed glass by spreading heat to the inside of the mixture GPM during firing as described above and to prevent the foamed glass BG from being fired on the plate by using the mesh belt 21b A plurality of rows of grooves are formed along the traveling direction. This makes it easier for the plate-shaped foamed glass (BG) to be uniformly divided along the groove, so that it is possible to efficiently divide the plate-shaped foamed glass (BG) with a smaller force.

The present invention relates to a non-absorbent material suitable for a variety of glass waste materials such as waste plate glass and waste glass bottles and used for civil engineering materials, aggregate for buildings, aggregate for concrete secondary products, lightweight embankment or the like for slope reaping, retaining wall greening, As a suitable absorbent material, a water-retaining material, and a water quality purification material, it is suitable as a manufacturing apparatus and a manufacturing method of a foamed glass which can be used for various purposes.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a schematic configuration of an apparatus for producing a foamed glass in an embodiment of the present invention; FIG.

Fig. 2 is a view showing a manufacturing process in the apparatus for producing a foamed glass of Fig. 1. Fig.

Fig. 3 is a schematic view showing the vicinity of a storage silo constituting the apparatus for producing foamed glass of Fig. 1. Fig.

Fig. 4 is a perspective view showing a part of a belt conveyor apparatus constituting the apparatus for manufacturing foamed glass of Fig. 1; Fig.

5 is a cross-sectional view showing a state in which a comb-like mark is put on a mixture on a mesh belt.

Fig. 6 is a schematic diagram showing a foamed glass raw material crushing apparatus constituting the foamed glass producing apparatus of Fig. 1. Fig.

Fig. 7 is a perspective view of the shredding tool of the foamed glass roughing apparatus of Fig. 6;

(Explanation of Symbols)

10 Foaming glass manufacturing apparatus 20 Firing apparatus

21 belt conveyor device 21a, 21z roller

21b mesh belt 22 cases Tropical

23 Firing furnace 24 Cooling zone

25, 26 Intake device 27 Storage silo

27a tubular portion 27b funnel portion

27c bottom opening 28 screw conveyor

29 Serrated pincushion plate 29a Comb tooth

30 Crushing device 40 Crushing device

41 Shredding tool 42 Motor

43 Blade 44 Blade Face

60 Next process conveying belt conveyor device

Claims (8)

A sintering apparatus for heating a mixture obtained by mixing a glass powder with a foaming agent to melt, foam and sinter, A belt conveyor device for conveying the mixture on the belt evenly and passing the mixture through the firing device; There is provided a coarse grinding device which is carried out by the belt conveyor device and divided by a crushing tool which is lifted and crushed on a roller at the end of the belt conveyor device, Wherein the foamed glass is produced by a method comprising the steps of: delete The apparatus according to claim 1, wherein the shredding tool has a plurality of blades arranged at a predetermined interval in a width direction of the belt, and each of the plurality of blades has a long blade surface in a traveling direction of the belt Of the foamed glass. 4. The method according to any one of claims 1 to 3, further comprising a serration-type ply plate for placing a plurality of rows of comb-like marks along the advancing direction of the belt on a mixture evenly placed on the belt, Apparatus for manufacturing glass. A firing step in which a mixture obtained by mixing a glass powder with a foaming agent is melted, foamed and fired by heating while being conveyed while being evenly conveyed on a belt of a belt conveyor apparatus, And a coarse grinding step of coarse grinding by means of a grinding tool which is carried out by the belt conveyor apparatus through the above-mentioned firing step and is lifted and crushed on the roller at the end of the belt conveyor apparatus, Wherein the foamed glass is produced by a method comprising the steps of: delete 6. The apparatus according to claim 5, wherein the shredding tool has a plurality of blades arranged at a predetermined interval in a width direction of the belt, and each of the plurality of blades has a long blade surface in a traveling direction of the belt By weight. The method of manufacturing a foamed glass according to claim 5 or 7, wherein, before the firing step, a plurality of rows of comb-like marks are inserted into the mixture evenly spread on the belt along the traveling direction of the belt.

Images