TWI711591B - Manufacture method and device of expansion glass material - Google Patents

Abstract

The present invention relates to a method for cooperating with a device to manufacture an expansion glass material, the method comprising the steps below: grinding the recycle glass to form a plurality of glass granules; mixing a plurality of glass granules, an expansion agent, a thickening agent and a water to generate a liquid glass slurry; atomizing the liquid glass slurry to form an atomized glass and desiccating the atomized glass to form a plurality of dry glass granules; at last, heating sintering a plurality of dry glass granules to generate a plurality of expansion glass materials. The expansion glass material of present invention presents as a tiny granule after the procedure of atomizing, desiccating and sintering. So the expansion glass material can be used in various technical fields without the problem of oversize volume.

Description

Method for manufacturing expanded glass substrate and manufacturing device thereof

The present invention relates to a manufacturing method and manufacturing device for manufacturing expanded glass substrates using recycled glass, in particular to a manufacturing method capable of manufacturing recycled glass containing different silicon contents to produce expanded glass substrates in the form of small particles And manufacturing equipment.

At present, the common expanded glass on the market is mainly made of recycled glass as the main raw material, and the recycled glass is crushed and then mixed with expansion agent, thickener and aqueous solution, and then sintered at high temperature in a furnace. Glass has the characteristics of fireproof, waterproof, non-toxic, anti-corrosion, mothproof, insulation, sound insulation, anti-magnetic wave, anti-static and high mechanical strength, and expanded glass can be widely used in fields such as construction, chemical industry, packaging, medicine or military.

However, before the production of expanded glass, the recycled glass must be classified according to the silicon content and glass color, and then the appropriate recycled glass must be selected to make expanded glass, and the current manufacturing method for making expanded glass can only select specific types of recycled glass It cannot be used in different types of recycled glass, and because the recycled glass must be classified before production, the time for making expanded glass will be lengthened, which will relatively reduce the efficiency of producing expanded glass.

Furthermore, before high-temperature sintering, the cullet, expansion agent, thickener, and aqueous solution are mixed to form a mixture through an injection molding machine to form a plurality of granular expanded glasses, and then the plurality of expanded glasses are sintered. , The expanded glass made by the injection molding machine will show the shape of large particles, which will be limited to the application field because the expanded glass is too large, and the expanded glass with too large shape will be inconvenient to use. .

The main purpose of the present invention is to use recycled glass to produce an expanded glass substrate in the form of fine particles, so that the expanded glass substrate in the form of fine particles can be widely used in various technical fields without the shape of the expanded glass substrate being too large. It cannot be used.

The secondary purpose of the present invention is to be able to directly start the production of expanded glass substrates without classifying the recycled glass, thereby shortening the production time and improving production efficiency.

In order to achieve the foregoing objective, the present invention relates to a method for manufacturing an expanded glass substrate. The method for manufacturing an expanded glass substrate is used in conjunction with an expanded glass substrate manufacturing device. The method for manufacturing an expanded glass substrate includes the following steps: Steps: crushing at least one recycled glass to form a plurality of glass particles; a mixing and grinding step: mixing the above-mentioned plurality of glass particles, an expanding agent, a thickening agent and an aqueous solution to form a fluid glass paste; a spray drying Step: atomizing the above-mentioned fluid glass slurry to form a mist-like glass, the above-mentioned mist-like glass is contacted with a hot air to remove the aqueous solution to form a plurality of dried glass particles; and a sintering step: the above-mentioned plurality of dried glass particles Heat and sinter to form a plurality of expanded glass substrates.

In this embodiment, the above-mentioned grinding step can directly crush a plurality of different types of recycled glass to form the above-mentioned plural glass particles, and during the above-mentioned mixed grinding step, each of the above-mentioned glass particles is ground to reduce the above-mentioned glass particles. The particle size is such that the fluid glass slurry contains a plurality of fine glass particles with a particle size smaller than the dry glass particles, and the particle size of the dry glass particles is between the glass particles and the fine glass particles.

In a preferred embodiment, the particle size of the glass particles is between 1 and 2 mm, the particle size of the fine glass particles is between 0.015 and 0.03 mm, and the particle size of the dried glass particles is between 0.05 and 0.5 mm, then The particle size of the expanded glass substrate is between 0.1 and 2 mm, and the dry glass particles have 95% by weight of the fine glass particles, 1 to 5% by weight of the expansion agent, and 1 to 5 by weight. % Of the above thickener.

In addition, during the sintering step, the plurality of dried glass particles are heated and sintered in a sintering environment where the temperature is increased from a first temperature to a second temperature higher than the first temperature. In a preferred embodiment, the above The first temperature is 300°C, and the second temperature is 850°C, wherein the expanded glass substrate has a plurality of pores inside, and the density of the expanded glass substrate is 150~420kg/m ³ and the compressive strength is 1.4~2Mpa.

Furthermore, the above-mentioned expanded glass substrate manufacturing device is mainly composed of a crushing mechanism, a mixing mechanism, a spray drying mechanism, and a sintering mechanism. The crushing mechanism is used to crush at least one recovered glass to form a plurality of glass particles. , And the mixing mechanism receives the plurality of glass particles, and mixes an expansion agent, a thickener, and an aqueous solution with the plurality of glass particles to form a fluid glass paste.

In addition, the spray drying mechanism atomizes the fluid glass slurry to form a mist glass, and provides a hot air contacting the mist glass, and the hot air removes the moisture of the mist glass to form a plurality of particle sizes. The dried glass particles smaller than the glass particles, wherein the sintering mechanism receives the plurality of dried glass particles, and heats and sinters the plurality of dried glass particles to form a plurality of expanded glass substrates.

In this embodiment, the spray drying mechanism has an evaporator, a sprayer, and a separating cylinder. The evaporator has a guide surface to allow the hot air to pass through the guide surface to form a spiral heat convection, and the sprayer is connected In the evaporating cylinder, the mist glass is provided to the inside of the evaporating cylinder, wherein the separating cylinder is connected to the evaporating cylinder, and the spiral heat convection can move part of the dried glass particles into the inside of the separating cylinder, and the spiral Thermal convection can move the remaining dry glass particles out of the evaporating cylinder.

Furthermore, the sintering mechanism has a rotary kiln and a burner. The rotary kiln is used for accommodating a plurality of dried glass particles, and has an inlet and an outlet. The rotary kiln can be rotated so that the A plurality of dry glass particles can be moved from the inlet to the outlet via tumbling, and the burner is located on one side of the outlet, and can provide a sintering heat convection, the sintering heat convection is from the outlet The material port flows to the material inlet, so that the internal temperature of the rotary kiln is gradually reduced from the material outlet to the material inlet.

The feature of the present invention is that the fluid glass slurry formed by mixing glass particles, expansion agent, thickening agent and aqueous solution is atomized to form a mist glass, and the mist glass is exposed to hot air to remove moisture to form a plurality of fine particles. Finally, the dried glass particles are heated and sintered to form a plurality of expanded glass substrates. By this, the expanded glass substrates in the form of fine particles can be widely used in various technical fields without the expansion of the glass substrates. Is too large to be used.

Furthermore, when the crushing step is performed, multiple types of recycled glass (which can be different in silicon content, color, or composition) can be directly crushed to produce expanded glass substrates, so that it is not necessary to recycle The glass is sorted, and the expanded glass substrate can be directly produced, thereby shortening the production time and improving production efficiency.

In order to facilitate a deeper, clear and detailed knowledge and understanding of the structure, use and characteristics of the present invention, a preferred embodiment is given, and the detailed description is as follows in conjunction with the drawings:

Please refer to FIG. 1, the manufacturing method 1 of an expanded glass substrate of the present invention is used in conjunction with an expanded glass substrate manufacturing device 2. The expanded glass substrate manufacturing device 2 is mainly composed of a crushing mechanism 20, a mixing mechanism 21, and a The spray drying mechanism 22 and a sintering mechanism 23 are constituted. In a preferred embodiment, as shown in FIG. 5, the spray drying mechanism 22 has an evaporating cylinder 221 showing a hollow inside, and the top of the evaporating cylinder 221 is connected with a sprayer 222, An opening 221a communicating with the inside of the evaporation cylinder 221 is formed at the end away from the sprayer 222, wherein the evaporation cylinder 221 is further connected to a separating cylinder 223, and a guiding surface 221b that changes the air flow direction is formed inside, and the evaporation cylinder The internal space of 221 is connected to the internal space of separation cylinder 223.

In addition, as shown in FIG. 6, the sintering mechanism 23 has a rotary kiln 231 and a burner 232. The interior of the rotary kiln 231 is hollow and can be rotated. In addition, the rotary kiln 231 is inclined 2 degrees to the horizontal plane to make the rotation The kiln 231 is inclined, and the opposite ends of the rotating kiln 231 respectively form an inlet 231a and an outlet 231b, and the burner 232 is located at one side of the outlet 231b.

Please refer to Figures 1 and 3. In the specific application, a grinding step 10 is first performed. First, a plurality of recycled glasses 30 are collected. In this embodiment, the silicon content and color of each recycled glass 30 are different. Similarly, subsequently, a plurality of recycled glasses 30 with different silicon contents are put into the crushing mechanism 20, and the crushing mechanism 20 directly crushes a plurality of different types of recycled glasses 30 to form a plurality of different particle sizes. The glass particles 31, in this embodiment, the particle size of each glass particle 31 is between 1 and 2 mm, and the type of recycled glass 30 can be classified according to the silicon content, color or composition.

After the grinding step 10 is completed, a mixing and grinding step 11 is performed, a plurality of glass particles 31 are put into the mixing mechanism 21, and an expansion agent 40, a thickening agent 50 and an aqueous solution 60 are added to the mixing mechanism 21. Then, the mixing mechanism 21 mixes a plurality of glass particles 31, an expansion agent 40, a thickener 50, and an aqueous solution 60 to form a fluid glass paste 32 in the form of a paste. In the mixing and grinding step 11, the mixing The mechanism 21 will grind each glass particle 31, so that the particle size of each glass particle 31 is gradually reduced and transformed into a fine glass particle 311 with a particle size smaller than the glass particle 31, so that the fluid glass paste 32 contains a plurality of fine glass particles 311 In this embodiment, the particle size of the fine glass particles 311 is between 0.015 and 0.03 mm.

Please refer to FIGS. 1 and 5. Next, a spray drying step 12 is performed. The fluid glass paste 32 containing a plurality of fine glass particles 311 is put into the sprayer 222 of the spray drying mechanism 22, and the sprayer 222 treats the fluid glass paste 32 is atomized to form a mist glass 33 inside the evaporation tube 221, wherein the mist glass 33 contacts the hot air 224 flowing out of the evaporation tube 221 to remove the aqueous solution 60, so that the mist glass 33 gradually changes from wet To dry to form a plurality of dried glass particles 34 with a particle size between the glass particles 31 and the fine glass particles 311, in this embodiment, the particle size of the dried glass particles 34 is between 0.05 and 0.5 mm, and, The dry glass particles 34 have 95% by weight of fine glass particles 311, 1 to 5% by weight of expansion agent 40, and 1 to 5% by weight of thickener 50, wherein, when hot air 224 flows into the evaporation tube Inside the 221, the hot air 224 passes through the guide surface 221b to form a spiral heat convection 224a flowing from top to bottom, and part of the spiral heat convection 224a will move a part of the lighter dry glass particles 34 to the separation cylinder 223, and part of the spiral heat convection 224a will flow from the inside of the separation cylinder 223 to the outer space. In addition, the remaining spiral heat convection 224a will cause the remaining heavy dry glass particles 34 directly from the opening of the evaporation cylinder 221 221a is discharged.

Please refer to Figures 1 and 6, the final sintering step 13 is to move a plurality of dried glass particles 34 from the inlet 231a of the rotary kiln 231 into the interior of the rotary kiln 231, and the burner 232 provides a sintering heat convection 232a , And the sintering heat convection 232a flows from the discharge port 231b of the rotary kiln 231 into the interior of the rotary kiln 231. Because the inlet 231a is far away from the burner 232, the rotary kiln 231 is close to the part of the internal space of the inlet 231a. The temperature is lower than the first temperature of the sintering heat convection 232a, and because the discharge port 231b is close to the burner 232, the part of the internal space of the rotary kiln 231 near the discharge port 231b presents a second temperature greater than the first temperature. With this, the internal temperature of the rotary kiln 231 is gradually reduced from the discharge port 231b to the input port 231a. In this embodiment, the first temperature is 300°C and the second temperature is 850°C, thereby rotating the interior of the kiln 231 The temperature increases from 300°C toward the discharge port 231b to 850°C.

Subsequently, the rotary kiln 231 starts to rotate, so that the dried glass particles 34 move from the inlet 231a toward the outlet 231b, so that each dried glass particle 34 is sintered in the first temperature environment, and when the dried glass particles When 34 is close to the discharge port 231b, then each of the dried glass particles 34 is sintered in an environment of a second temperature, whereby the dried glass particles 34 can be sintered in an environment where the first temperature increases to a second temperature In order to form a plurality of expanded glass substrates 35, in this embodiment, the dried glass particles 34 are sintered at a temperature of 300 to 850°C. In addition, the expanded glass substrate 35 has a plurality of holes inside, and the expanded glass The density of the substrate 35 is 150-420 kg/m ³ and the compressive strength is 1.4-2 Mpa. In a preferred embodiment, the particle size of the expanded glass substrate is 0.1-2 mm.

The above-mentioned embodiments are only used to facilitate the description of the present invention and are not intended to limit them. Without departing from the spirit of the present invention, those skilled in the industry who are familiar with the scope of the invention’s patent application and the description of the invention should make various simple modifications and modifications. Included in the scope of the following patent applications.

1: Expanded glass substrate manufacturing method 10: Grinding step 11: Mixed grinding step 12: Spray drying step 13: Sintering step 2: Expanded glass substrate manufacturing device 20: Grinding mechanism 21: Mixing mechanism 22: Spray drying mechanism 221 : Evaporation tube 221a: Opening 221b: Guide surface 222: Sprayer 223: Separation tube 224: Hot air 224a: Spiral heat convection 23: Sintering mechanism 231: Rotary kiln 231a: Feed inlet 231b: Discharge outlet 232: Burner 232a : Sintering heat convection 30: Recycled glass 31: Glass particles 311: Fine glass particles 32: Fluid glass paste 33: Mist glass 34: Dry glass particles 35: Expanded glass substrate 40: Expanding agent 50: Thickening agent 60: Aqueous solution

Fig. 1 is a step flow chart of the method for manufacturing an expanded glass substrate of the present invention; Fig. 2 is a module block diagram of an apparatus for manufacturing an expanded glass substrate of the present invention; Fig. 3 is a schematic diagram of the crushing step in Fig. 1; Fig. 4 is Fig. 1 Figure 5 is a schematic diagram of the spray drying step in Figure 1; and Figure 6 is a schematic diagram of the sintering step in Figure 1.

1: Manufacturing method of expanded glass substrate

10: Crushing step

11: mixing and grinding steps

12: Spray drying step

13: Sintering step

Claims (8)

A method for manufacturing an expanded glass substrate, comprising: a crushing step: crushing a plurality of recycled glasses of different colors to form a plurality of glass particles; a mixing and grinding step: the above-mentioned plurality of glass particles, an expansion agent, and a thickening Mixing agent with an aqueous solution to form a fluid glass paste; a spray drying step: atomizing the fluid glass paste to form a mist glass, the mist glass is exposed to a hot air to remove the aqueous solution to form a plurality of Drying glass particles; and a sintering step: heating and sintering the plurality of dried glass particles to form a plurality of expanded glass substrates, and the plurality of dried glass particles increase from a first temperature to a temperature higher than the first temperature Heating and sintering in a sintering environment at a second temperature. The dried glass particles are first sintered in an environment at a first temperature, and then the dried glass particles are sintered in an environment at a second temperature, where the first temperature is 300 ℃, and the above-mentioned second temperature is 850℃. The method for manufacturing an expanded glass substrate according to claim 1, wherein when the mixing and grinding step is performed, each of the glass particles is ground to reduce the particle size of the glass particles, so that the fluid glass paste contains a plurality of particles smaller than The dry glass particles are fine glass particles, and the particle size of the dry glass particles is between the glass particles and the fine glass particles. The method for manufacturing an expanded glass substrate according to claim 2, wherein the particle size of the glass particles is between 1 and 5 mm, and the particle size of the fine glass particles is between 0.015 and 0.03 mm. If the particle size is between 0.05 and 0.5 mm, the particle size of the expanded glass substrate is between 0.1 and 2 mm. The method for manufacturing an expanded glass substrate according to claim 3, wherein the dry glass particles have 95% by weight of the fine glass particles, 1 to 5% by weight of the expansion agent, and 1 to 5% by weight. 5% of the above thickener. The method for manufacturing an expanded glass substrate according to claim 1, wherein the expanded glass substrate has a plurality of holes inside, and the expanded glass substrate has a density of 150 to 420 kg/m ³ and a compressive strength of 1.4 ~2Mpa. An expanded glass substrate manufacturing device, comprising: a crushing mechanism for crushing a plurality of different colors to form a plurality of glass particles; a mixing mechanism for receiving the plurality of glass particles, and adding an expanding agent and The thickener and an aqueous solution are mixed with the plurality of glass particles to form a fluid glass paste; a spray drying mechanism atomizes the fluid glass paste to form a mist glass, and provides a heat contacting the mist glass Air, the hot air removes the moisture of the mist glass to form a plurality of dried glass particles having a particle size smaller than the glass particles; and a sintering mechanism that receives the plurality of dried glass particles and provides a temperature increase from a first to a A sintering environment at a second temperature higher than the first temperature is used to heat and sinter the plurality of dried glass particles to form a plurality of expanded glass substrates. The dried glass particles are first sintered in an environment at the first temperature, and then The dried glass particles are sintered in a second temperature environment, wherein the first temperature is 300°C and the second temperature is 850°C. The expanded glass substrate manufacturing device according to claim 6, wherein the spray drying mechanism includes: an evaporation drum having a guide surface, so that the hot air passes through the guide surface to form a spiral heat convection; A sprayer connected to the evaporating cylinder and providing the mist glass to the inside of the evaporating cylinder; and a separating cylinder connected to the evaporating cylinder, and the spiral heat convection can move part of the dried glass particles into the inside of the separating cylinder At the same time, the spiral heat convection can move the remaining dry glass particles out of the evaporation cylinder. The expanded glass substrate manufacturing device according to claim 6, wherein the sintering mechanism includes: a rotary kiln for accommodating a plurality of dried glass particles, and having an inlet and an outlet, and the above The rotary kiln can be rotated so that the plurality of dry glass particles can be moved from the inlet to the outlet via tumbling; and a burner is located on one side of the outlet and can provide a sintering heat convection The convection of the sintering heat flows from the discharge port to the inlet, so that the internal temperature of the rotary kiln is gradually reduced from the outlet to the inlet.

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