WO2012108364A1 - Four de fusion de verre, procédé pour produire du verre fondu, procédé pour produire des produits de verre et appareil pour produire des produits de verre - Google Patents

Four de fusion de verre, procédé pour produire du verre fondu, procédé pour produire des produits de verre et appareil pour produire des produits de verre Download PDF

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Publication number
WO2012108364A1
WO2012108364A1 PCT/JP2012/052550 JP2012052550W WO2012108364A1 WO 2012108364 A1 WO2012108364 A1 WO 2012108364A1 JP 2012052550 W JP2012052550 W JP 2012052550W WO 2012108364 A1 WO2012108364 A1 WO 2012108364A1
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Prior art keywords
glass
raw material
molten
molten glass
glass raw
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PCT/JP2012/052550
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English (en)
Japanese (ja)
Inventor
酒本　修
千禾夫 田中
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旭硝子株式会社
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Priority to JP2012556866A priority Critical patent/JP5966933B2/ja
Priority to CN201280007241.8A priority patent/CN103339072B/zh
Publication of WO2012108364A1 publication Critical patent/WO2012108364A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C03B3/005—Charging the melting furnaces using screw feeders
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C03B3/02—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet
    • C03B3/026—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet by charging the ingredients into a flame, through a burner or equivalent heating means used to heat the melting furnace
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping

Definitions

  • the present invention relates to a glass melting furnace, a method for manufacturing a molten glass, a method for manufacturing a glass product, and an apparatus for manufacturing a glass product.
  • Patent Document 1 discloses a glass melting apparatus that produces molten glass from a glass raw material, and includes at least one oxygen burner and a gaseous state from the oxygen burner.
  • a glass melting apparatus with means for controlling the fuel and oxygen rates is described.
  • This glass melting apparatus generates a laminar gaseous fuel flow and a laminar oxygen flow such that the velocity of the gaseous fuel and the velocity of oxygen are substantially equal, and the generated flame is heated on the surface of the glass raw material.
  • the molten glass is produced by melting the glass raw material.
  • a granulated body (glass raw material particles) composed of a mixed powder of glass raw materials is heated and melted in a high-temperature gas phase atmosphere to form molten glass particles.
  • a method for producing molten glass that is accumulated to form a molten glass (glass melt) see Patent Document 2.
  • this method for producing molten glass is referred to as an in-flight glass melting method.
  • the conventional molten glass manufacturing apparatus and manufacturing method as described above have the following problems.
  • an unmelted material tends to remain in the initial melt at the start of melting of the glass raw material, and there is a problem in terms of energy saving operation.
  • the air melting method described in Patent Document 2 is used, glass raw material particles are individually melted in a high-temperature gas-phase atmosphere, so that high-quality molten glass particles having a uniform composition can be easily obtained and energy-saving operation is also possible. It becomes.
  • the current production of glass is mainly the production of molten glass using a glass melting furnace by a Siemens kiln, and this glass melting furnace is to be changed to a glass melting furnace mainly based on the air melting method.
  • the glass cullet used for recycling is currently mixed with glass cullet of different sizes from several millimeters to 50 millimeters, so it takes time and effort to process all these glass cullets to 1 mm or less.
  • This invention is made
  • the glass melting furnace of the present invention supplies a glass raw material containing glass cullet to a furnace body that stores molten glass, and a supply region on the molten glass that is provided in a side portion of the furnace body and is stored in the furnace body.
  • the glass melting furnace of the present invention includes a second charging unit that is provided in the furnace body and charges glass raw material particles toward another region on the molten glass that is different from the supply region, and below the second charging unit.
  • the first charging section may be provided such that the discharge direction of the molten glass particles is vertically downward.
  • a molten glass discharge port is formed on the side opposite to one side of the furnace body provided with the glass raw material supply unit, and the first charging unit is a discharge direction of the molten glass particles. May be provided so as to be inclined downward and inclined toward the glass raw material supply unit.
  • a molten glass discharge port is formed on the side opposite to one side of the furnace body provided with the glass raw material supply unit, and the first charging unit has a discharge direction of molten glass particles. It may be provided so as to be inclined downward and inclined toward the discharge port side.
  • the glass melting furnace of the present invention may include a heating means for heating the molten glass at the furnace bottom of the furnace body.
  • the glass melting furnace of the present invention may include an auxiliary heating burner on the furnace wall of the furnace body.
  • a glass raw material containing glass cullet is supplied onto the molten glass in a furnace body in which the molten glass is stored, and the first charging unit is supplied to the supply region to which the glass raw material is supplied.
  • the glass raw material particles are charged from above, and the glass raw material particles from the first charging portion are converted into molten glass particles by the first heating gas phase portion below the first charging portion, and then on the glass raw material including the glass cullet.
  • the glass raw material containing the glass cullet is melted by dropping.
  • glass raw material particles are charged from a second charging portion toward another region on the molten glass different from the supply region, and the second raw material is below the second charging portion.
  • the glass raw material particles from the charging part may be supplied to the molten glass after being converted into molten glass particles by the second heated gas phase part.
  • the first charging part or the second Using the glass raw material particles whose components are adjusted so as to compensate for the insufficient composition component with respect to the glass raw material particles charged into the furnace body from the charging portion, the component-adjusted glass is supplied from the first charging portion or the second charging portion.
  • an insufficient composition component can be supplied to the glass raw material containing the glass cullet.
  • the glass raw material is supplied while continuously or intermittently supplying a glass raw material containing glass cullet onto the molten glass in the furnace body storing the molten glass.
  • the glass raw material particles are continuously or intermittently charged from the first charging portion toward the supply region, and the glass raw material particles from the first charging portion are molten glass particles through the first heating gas phase portion.
  • the glass raw material containing the glass cullet may be melted by dropping on the glass raw material containing the glass cullet.
  • the average particle diameter of the glass raw material particles is preferably 30 to 1000 ⁇ m.
  • the manufacturing method of the molten glass of this invention can use what adjusted the quantity of the at least 1 sort (s) or more of a clarifier, a coloring agent, and a fusion aid as the said glass raw material particle after component adjustment.
  • the method for producing a molten glass product according to the present invention comprises a step of producing a molten glass from the glass raw material and the glass raw material particles using the method for producing a molten glass according to any one of the above, and molding the molten glass. And a step of slowly cooling the glass after molding.
  • An apparatus for producing a glass product according to the present invention includes a glass melting furnace according to any one of the above, a molding means for molding the molten glass produced by the glass melting furnace, and a slow cooling means for gradually cooling the glass after molding. And comprising.
  • glass raw material particles are charged into the furnace from the first charging part, and the molten glass particles melted in the first heating gas phase part are placed on the glass raw material containing the glass cullet. It can be directly dropped to the glass raw material including glass cullet to transfer heat and melt. For this reason, glass raw materials containing glass cullet can be efficiently transferred by using heat transfer from molten glass particles in addition to heat transfer from molten glass, and can be quickly melted. Can be manufactured. Further, the molten glass particles dropped onto the glass raw material are melted by the first heating gas phase portion to become molten glass particles having a uniform composition, and glass is obtained by good heat transfer from the molten glass particles having a uniform composition.
  • the composition can be made more uniform than the conventional molten glass.
  • the glass melting furnace of the present invention when a flame of the burner directly hits a pile of glass raw materials including glass cullet on the molten glass with a burner for heating ordinary glass raw materials, fine glass cullet or glass Although the raw material powder is scattered, glass raw material particles are charged into the furnace from the first charging part, and the molten glass particles melted in the first heating gas phase part are directly dropped onto the glass raw material including the glass cullet. Therefore, the scattered fine cullet or glass raw material powder is adsorbed by the molten glass particles deposited by dropping, and scattering of the glass raw material powder and the like can be suppressed.
  • the structure for supplying the glass raw material containing the glass cullet to the supply region in the furnace can be the same as that of the existing melting furnace, and the furnace body has the first charging portion and the first charging portion.
  • the molten glass raw material particles can be supplied onto the glass raw material and heated. Therefore, the structure of the melting furnace equipped with existing equipment such as glass raw material and glass cullet supply equipment can be used as it is, and glass raw material particles containing glass cullet can be used effectively without significant modification of the existing glass melting furnace.
  • the glass raw material can be directly heated using the molten glass particles, and high-quality molten glass can be produced with good thermal efficiency.
  • the molten glass manufacturing apparatus and manufacturing method of the present invention can efficiently manufacture high-quality molten glass having a uniform composition, and thus is manufactured by an energy-saving operation. High quality glass products can be provided.
  • FIG. 1 is a schematic configuration diagram showing the configuration of the first embodiment of the glass melting furnace according to the present invention.
  • FIG. 2 is a sectional view taken along line AA in FIG.
  • FIG. 3 is a schematic cross-sectional view showing an example of an air melting burner applied to the glass melting furnace shown in FIG.
  • FIG. 4 is a flowchart showing an example of a glass product manufacturing method using the glass melting furnace according to the present invention.
  • FIG. 5 is a schematic explanatory view showing the behavior of the molten glass particles in one embodiment of the method for producing molten glass according to the present invention, and FIG. 5 (a) shows that the molten glass particles descend toward the glass raw material.
  • FIG. 5 is a schematic explanatory view showing the behavior of the molten glass particles in one embodiment of the method for producing molten glass according to the present invention, and FIG. 5 (a) shows that the molten glass particles descend toward the glass raw material.
  • FIG. 5B is an explanatory diagram showing a state in which the molten glass particles falling on the glass raw material transmit heat
  • FIG. 5C is a diagram in which the deposition of the molten glass particles proceeds on the glass raw material. It is explanatory drawing which shows a state.
  • FIG. 6 is a schematic configuration diagram showing a second embodiment of the glass melting furnace according to the present invention.
  • FIG. 7 is a sectional view taken along line BB in FIG.
  • FIG. 8 is a schematic configuration diagram showing the main part of the third embodiment of the glass melting furnace according to the present invention
  • FIG. 8 (a) is a horizontal sectional view
  • FIG. 8 (b) is a diagram of FIG. 8 (a). It is sectional drawing which follows CC line.
  • FIG. 8 is a schematic configuration diagram showing a second embodiment of the glass melting furnace according to the present invention.
  • FIG. 7 is a sectional view taken along line BB in FIG.
  • FIG. 8 is a schematic configuration diagram showing the main part of the
  • FIG. 9 is a schematic configuration diagram showing the main part of the fourth embodiment of the glass melting furnace according to the present invention.
  • FIG. 10 is a schematic configuration diagram showing a main part of a fifth embodiment of the glass melting furnace according to the present invention.
  • FIG. 11 is a schematic configuration diagram showing a main part of a sixth embodiment of the glass melting furnace according to the present invention.
  • FIG. 12 is a schematic configuration diagram showing a main part of a seventh embodiment of the glass melting furnace according to the present invention, FIG. 12 (a) is a longitudinal sectional view, and FIG. 12 (b) is a diagram of FIG. 12 (a). It is sectional drawing which follows the DD line.
  • FIG. 13 is a schematic configuration diagram showing a main part of an eighth embodiment of the glass melting furnace according to the present invention, FIG. 13 (a) is a longitudinal sectional view, and FIG. 13 (b) is a diagram of FIG. 13 (a). It is sectional drawing which follows the EE line.
  • FIG. 1 is a schematic configuration diagram showing the configuration of an embodiment of a glass melting furnace according to the present invention
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1
  • FIG. 3 is applied to the glass melting furnace.
  • It is a block diagram which shows an example of an air melting burner.
  • the air melting burner is a burner for use in the air melting method.
  • the glass melting furnace 100 of the present embodiment mainly includes a furnace body 1, an in-air melting burner 2, a gas supply source 3, a glass raw material particle supply unit 4, and a glass raw material supply unit 5. It is configured.
  • a molding apparatus 6 for molding the molten glass G manufactured in the glass melting furnace 100 into a glass product is connected to the downstream side of the glass melting furnace 100.
  • the furnace body 1 has a hollow structure made of a refractory material such as a refractory brick. That is, furnace wall portions 1c, 1d, 1e, and 1f (see FIGS. 1 and 2) are provided between the furnace bottom portion 1b and the ceiling portion 1a, and a storage portion for the molten glass G that is a glass melt is provided inside these. 1h is formed.
  • a glass raw material inlet 1A for introducing the glass raw material GM 2 into the molten glass G in the furnace is provided at the intermediate portion in the height direction of the furnace wall 1c. In FIG. 1, only one glass raw material inlet 1A is drawn, but in this embodiment, as shown in FIG. 2, it is provided in two places spaced apart in the horizontal direction.
  • molding apparatus 6 side is formed in the furnace wall part 1d of the side facing the furnace wall part 1c.
  • the glass raw material supply part 5 of this embodiment is provided in the side part of the furnace body 1, ie, the furnace wall part 1c side of the furnace body 1, and the upstream of the method through which molten glass flows, and glass raw material GM. 2 , a transport pipe 5 d connected to the lower portion of the hopper 5 a, a transport screw 5 b provided inside the transport pipe 5 d, and a drive unit 5 c that rotationally drives the transport screw 5 b.
  • the hopper 5a includes a raw material inlet 5A at the top and a bottom opening 5B at the bottom, a transport pipe 5d is connected horizontally below the bottom opening 5B, and one end of the transport pipe 5d is connected to the glass raw material inlet 1A.
  • the conveying screw 5b is conveyed toward the glass raw material GM 2 in the transport pipe 5d to the glass raw material inlet 1A.
  • one glass raw material supply unit 5 is provided for each glass raw material inlet 1A. Therefore, the glass material GM 2 contained in the hopper 5a is put in the storage portion 1h of glass raw material inlet 1A by the transport screw 5b. If the already molten glass G or molten glass particles U in the storage portion 1h is accumulated molten glass U 'is stored, as shown in FIGS. 1 and 2, the glass raw material GM 2 is formed a mountain-like mass Then, it floats on the liquid surface of the molten glass G (U ′).
  • the raw material supply direction of the glass raw material supply unit 5 is the direction from the furnace wall 1c toward the furnace wall 1d.
  • the air melting burner 2 is provided to melt the glass raw material particles GM 1 in the heated gas phase portion K to form the molten glass particles U, and discharge them toward the supply region S to which the glass raw material GM 2 is supplied. It has been.
  • Aerial melting burner 2 of the present embodiment as in release direction of the glass raw material particles GM 1 is vertically below, attached to a ceiling portion 1a of the furnace body 1 along the vertical axis passing through the center of the supply region S Yes.
  • An example of the internal structure of the air melting burner 2 applied to the present embodiment includes a cylindrical nozzle body 22 having a supply path 21 through which the glass raw material particles GM 1 pass, as shown in FIG.
  • the three-layer structure includes a cladding tube 23 disposed so as to surround the periphery of the nozzle body 22 and an outer tube 24 disposed so as to surround the periphery of the cladding tube 23.
  • a flow path between the nozzle body 22 and the cladding tube 23 is a fuel gas supply path 25, and a flow path between the cladding pipe 23 and the outer pipe 24 is a combustion gas supply path 26.
  • a gas supply source 3 for supplying a fuel gas such as propane, butane, methane, LPG (liquefied petroleum gas) and a combustion gas containing O 2 gas is supplied to the air melting burner 2 through a supply pipe 3a, 3b is connected.
  • the supply pipe 3 a is a pipe that supplies the fuel gas, and is connected to the fuel gas supply path 25.
  • the supply pipe 3 b is a pipe that supplies the combustion gas, and is connected to the combustion gas supply path 26.
  • the gas is introduced into the combustion gas supply passage 26 as indicated by the arrow 29.
  • the air fusion burner 2 can inject the oxyfuel combustion flame H by the said fuel gas and the said gas for combustion to the front end side (lower side of FIG. 1, FIG. 3).
  • the nozzle body 22 of the air melting burner 2, glass material grains supply unit 4 is connected for supplying glass raw material particles GM 1 with a carrier gas through a supply pipe 4a.
  • a carrier gas oxygen or air can be employed.
  • the carrier gas, the glass raw material particles GM 1 is supplied to the nozzle body 22, as long as gas can be injected from the outlet side of the nozzle body 22, not limited to oxygen or air.
  • the configuration of the glass raw material supply unit 4 includes a hopper that stores the glass raw material particles GM 1, and gas delivery means that moves the glass raw material particles GM 1 stored in the hopper into the supply pipe 4 a by the carrier gas. For this reason, when the glass raw material particles GM 1 are supplied from the glass raw material particle supply unit 4 together with the carrier gas to the nozzle body 22, the in-air melting burner 2 injects the oxygen combustion flame H from the tip and the glass raw material particles GM. 1 can be released.
  • the oxygen combustion flame H has a heating gas phase portion K of about 2000 to 3000 ° C. higher than the melting point of each raw material constituting the glass raw material particles GM 1 in and around the oxygen combustion flame H. Can be formed.
  • the glass raw material particles GM 1 are discharged vertically downward as molten glass particles U in the molten liquid phase.
  • the gas burned in the oxyfuel flame H together with the molten glass particles U and the gas that has passed through the heated gas phase portion K without being burned are referred to as a heated gas g heated in the heated gas phase portion K. Injected vertically downward.
  • the heated gas g is heated to substantially the same temperature as the heated gas phase portion K at the time of injection.
  • the glass raw material particles GM 1 are melted in the heated gas phase part K by the air melting burner 2 having the above-described configuration to form the molten glass particles U, and the molten glass particles U are directed to the glass raw material GM 2 containing the glass cullet. Can be released.
  • the air-melting burner 2 of the present embodiment generates a first charging part capable of ejecting glass raw material particles GM 1 in an intended direction through an internal supply path 21 and a heated gas phase part K accompanying the oxyfuel combustion flame H. also serves as a first heating means for melting the glass raw material particles GM 1 and.
  • the structure of the air melting burner 2 is that the glass raw material particles GM 1 are melted in the heated gas phase part K to form the molten glass particles U and discharged toward the supply region S to which the glass raw material GM 2 is supplied.
  • a heating means to be used it is not particularly limited, and all the heating means used in the air melting method can be adopted.
  • the specific suitable heating means the above-described air-melting burner 2 using an oxyfuel flame such as a natural gas-oxygen flame can be used.
  • An apparatus capable of generating at least one of a thermal plasma arc such as a direct current plasma, a multiphase plasma, and a high frequency induction plasma can be used.
  • specific examples are given as the first heating means.
  • the second heating means which will be described later, or a heating means provided in addition to the second heating means will also be described. Means can be used.
  • the molten glass G to be produced in the glass melting furnace 100 of the present embodiment the glass raw material particles GM 1 and the glass raw material GM 2 as the raw materials will be described below.
  • the molten glass G to be manufactured using the glass melting furnace 100 of the present embodiment is not particularly limited in terms of composition. Therefore, it may be any of soda lime glass, alkali-free glass, mixed alkali glass, borosilicate glass, or other glass.
  • the molten glass G is soda lime glass used for a plate glass for construction or vehicles
  • the molten glass G is expressed in terms of mass percentage on the basis of oxide, SiO 2 : 65 to 75%, Al 2 O 3 : 0. ⁇ 3%, CaO: 5-15%, MgO: 0-15%, Na 2 O: 10-20%, K 2 O: 0-3%, Li 2 O: 0-5%, Fe 2 O 3 : 0 to 3%, TiO 2 : 0 to 5%, CeO 2 : 0 to 3%, BaO: 0 to 5%, SrO: 0 to 5%, B 2 O 3 : 0 to 5%, ZnO: 0 to 5 %, ZrO 2 : 0 to 5%, SnO 2 : 0 to 3%, SO 3 : 0 to 0.5%.
  • the molten glass G is a non-alkali glass used for a substrate for a liquid crystal display
  • the molten glass G is expressed in terms of mass percentage on the basis of oxide, SiO 2 : 39 to 75%, Al 2 O 3 : 3 to 27 %, B 2 O 3: 0 ⁇ 20%, MgO: 0 ⁇ 13%, CaO: 0 ⁇ 17%, SrO: 0 ⁇ 20%, BaO: 0 ⁇ 30%, it is preferable to have a composition of.
  • the molten glass G is a mixed alkaline glass used for a substrate for a plasma display
  • the molten glass G is expressed in terms of mass percentage on the basis of oxides, SiO 2 : 50 to 75%, Al 2 O 3 : 0 to It is preferable to have a composition of 15%, MgO + CaO + SrO + BaO + ZnO: 6 to 24%, Na 2 O + K 2 O: 6 to 24%.
  • the molten glass G is a borosilicate glass used in a heat-resistant container or a physics and chemistry instrument
  • the molten glass G is expressed in terms of mass percentage on the basis of oxide, SiO 2 : 60 to 85%, Al It is preferable to have a composition of 2 O 3 : 0 to 5%, B 2 O 3 : 5 to 20%, Na 2 O + K 2 O: 2 to 10%.
  • the glass raw material powder having any one of the above compositions for example, the particulate glass raw material powder particles of each of the above-mentioned components is used as the composition ratio of the target glass.
  • the above-described glass raw material particles GM 1 that are mixed to form a granulated body are prepared.
  • the air melting method is a method for producing a molten glass by melting glass raw material particles GM 1 in a high-temperature gas phase atmosphere in order to produce a glass composed of a plurality of (usually three or more components) components. Can be written.
  • a method of preparing the glass raw material particles GM 1 from the glass raw material powder particles a method such as a spray dry granulation method can be used, and an aqueous solution in which a glass raw material is dispersed and dissolved is sprayed into a high temperature atmosphere to dry and solidify.
  • the grain method is preferred.
  • this granulated body may be composed only of raw materials having a mixing ratio corresponding to the target glass component composition, but the granulated body is further mixed with glass cullet powder having the same composition, and this is mixed with glass. It can also be used as raw material particles GM 1.
  • glass cullet usually has various sizes
  • glass cullet that has already become fine powder may be mixed with glass raw material particle GM 1 , but the average constituting glass raw material particle GM 1
  • a glass cullet having a particle diameter larger than that of the glass particle GM 2 is used after being mixed with a glass raw material GM 2 described later.
  • the glass raw material powder particles in the range of 2 to 500 ⁇ m are dispersed in a solvent such as distilled water, stirred for a predetermined time with a stirrer such as a ball mill, mixed, and pulverized, so that the glass raw material powder particles of the above components are almost uniform.
  • a slurry dispersed in is obtained.
  • the glass raw material particles GM 1 are obtained by spraying this into a heated air stream.
  • a binder such as 2-aminoethanol or PVA (polyvinyl alcohol) may be mixed and stirred for the purpose of uniformly dispersing the raw material powder particles and improving the strength of the granulated raw material.
  • the glass raw material particles GM 1 used in the present embodiment can be formed by a dry granulation method such as a tumbling granulation method or a stirring granulation method in addition to the spray dry granulation method described above.
  • the average particle diameter (weight average) of the glass raw material particles GM 1 is preferably 30 to 1000 ⁇ m. More preferably, glass raw material particles GM 1 having an average particle diameter (weight average) in the range of 50 to 500 ⁇ m are used, and glass raw material particles GM 1 in the range of 70 to 300 ⁇ m are more preferable.
  • An example of the glass raw material particles GM 1 is enlarged and shown in a circle of a two-dot chain line in FIG. It is preferable that almost matches either approximated the composition ratio of the composition ratio of the glass to a final object in one of the glass raw material particles GM 1.
  • the average particle diameter (weight average) of the molten glass particles U in which the glass raw material particles GM 1 are melted is usually about 80% of the average particle diameter of the glass raw material particles GM 1 in many cases.
  • the particle size of the glass raw material particles GM 1 can heat in a short time, that it is easy to dissipate the generated gas from the glass raw material particles GM 1, and in terms of reduction of compositional variation between particles, select the range of above It is preferable to do.
  • These glass raw material particles GM 1 is optionally refining agents as auxiliary materials, coloring agents, can contain molten aids like.
  • boric acid and the like in these glass raw material particles GM 1 have a relatively high vapor pressure at a high temperature, and are thus easily evaporated by heating. Therefore, they should be mixed in excess of the composition of the glass as the final product. Can do.
  • a clarifier when a clarifier is contained as an auxiliary material, a necessary amount of a clarifier containing one or more elements selected from chlorine (Cl), sulfur (S), and fluorine (F) is required. Can be added.
  • Frit GM 2 is a glass raw material for forming the molten glass G in conjunction with the glass raw material particles GM 1.
  • the composition of the glass raw material GM 2 is set based on the target glass composition range of the molten glass G and the quantity ratio of the composition supplied as the glass raw material particles GM 1 .
  • the composition of the glass raw material particles GM 1 preferably matches the target glass composition range as the molten glass G.
  • the composition of the glass raw material GM 2 is also adjusted to the target glass composition range as the molten glass G.
  • the composition of the glass raw material particles GM 1 is out of the range of the glass composition of the target as the molten glass G, the composition of the glass material GM 2 is a composition to compensate for the composition to be insufficient in the glass raw material particles GM 1.
  • the composition of the glass raw material GM 2 deviates from the target glass composition, the composition of the glass raw material particles GM 1 is a composition that supplements the composition lacking in the glass raw material GM 2 .
  • the composition of the composition and the glass material GM 2 glass material grain GM 1 in consideration can achieve a glass composition of the target.
  • Glass raw materials GM 2 used in this embodiment it is preferable to adopt a configuration including a glass cullet least 10 mass%.
  • the glass cullet contained in the glass raw material GM 2 either or both of glass waste generated in the manufacturing process of glass products (in-process circulation cullet) and a glass piece recovered from the city to remove impurities is used. Can be mentioned. These glass scraps and glass pieces are crushed and formed into, for example, a powder form or a broken piece form having a particle size ranging from 1 mm to 50 mm.
  • the size of the glass cullet is meltable and preferably larger. This glass cullet large size by covering the raw material surface of the glass raw material GM 2, it is to suppress the scattering of fine raw materials.
  • the proportion of glass cullet in a glass material GM 2 for example, the type of glass product manufacturing, inventory step in the circulation cullet can appropriately set according to the condition of the purchase prices of commercial cullet.
  • the amount (% by mass) of glass cullet in the total mass of the glass product is often about 30% for plate glass, about 90% for bottle glass, and about 50% for glass for liquid crystal. .
  • the glass raw material GM 2 as components other than the glass cullet, and batch material obtained by mixing powders of a plurality of glass raw materials are glass compositions required by melt obtained. As other glass materials may include those to granulate the pre-batch raw material such as glass raw material particles GM 1. Further, the glass raw material GM 2, as the components other than the glass cullet, a clarifying agent is auxiliary material, colorant, a melting aid or the like can be added.
  • Glass cullet has better meltability than batch materials. Therefore, increasing the amount of glass cullet in a glass material GM 2 is preferred from the viewpoint of energy saving operation. However, since glass cullet is poor in reactivity, defoaming becomes difficult when the number of glass cullet increases. Therefore, in this case, it is preferable to add a clarifying agent with batch material in a glass raw material GM 2. Although a larger amount of clarifier may be added to the glass raw material particles GM 1 , it is relatively effective to add the clarifier to the batch raw material from the viewpoint of volatilization of the clarifier.
  • FIG. 4 is a flowchart showing an example of a method for producing a glass product according to the present invention.
  • FIG. 5 is a schematic explanatory view of the behavior of the molten glass particles U in this example.
  • the oxyfuel flame H is formed by the air melting burner 2, and the heated gas phase part K is formed on the lower end side of the air melting burner 2.
  • the ceiling part 1a, the furnace bottom part 1b, the furnace wall parts 1c, 1d, 1e, and 1f are heated by radiant heat transfer and convection heat transfer by the oxyfuel flame H, and a high-temperature gas phase of, for example, about 1500 ° C. is stored in the storage part 1h. Create an atmosphere. Thereby, the storage part 1h can store the molten glass G as a glass melt.
  • a batch raw material may be accommodated in the storage part 1h, and it may be heated with the air melting burner 2 to form the molten glass G, or it may be melted in the air.
  • the molten glass G may be formed by the burner 2 as described below.
  • the glass raw material particles GM 1 are supplied from the glass raw material particle supply unit 4 together with the carrier gas to the nozzle body 22 of the air-melting burner 2.
  • the glass raw material particles GM 1 move downward in the nozzle body 22 and are charged into the heated gas phase portion K formed by the oxyfuel flame H.
  • the individual glass raw material particles GM 1 are rapidly heated and melted in the heated gas phase portion K, and the whole is melted and individually converted into molten glass particles U.
  • Each molten glass particle U is jetted vertically downward together with the carrier gas and the heated gas g heated in the heated gas phase part K, falls into the storage part 1h of the furnace body 1, and is accumulated in the storage part 1h.
  • U ′ is formed.
  • the glass raw material particles GM 1 are generated in the air-burning burner 2 by the carrier gas, the fuel gas supply path 25, the fuel gas injected from the combustion gas supply path 26, and the airflow formed by the combustion gas. Without staying at the tip, it is sprayed downward and heated.
  • each molten glass particle U is the target molten glass G, and a high-quality melt with a uniform composition. It is glass G.
  • the molten glass particles U are the droplet particles of small particle size which is formed by melting a glass raw material particles GM 1, less bubbles as a result of dissipation of the generated gas is made sufficiently.
  • the glass raw material particles GM 1 are charged into the furnace from the air melting burner (first charging part) 2 and melted in the heating gas phase part K (first heating gas phase part). Since the glass particles U are directly dropped and deposited on the glass raw material GM 2 containing glass cullet, the fine cullet or glass raw material powder scattered on the molten glass particles U is adsorbed, and scattering of the glass raw material powder and the like can be prevented. .
  • the scattered glass raw material powder is often different from the target glass composition, it is possible to reduce the scattered glass raw material powder and prevent it from being mixed into the molten glass G (U '). Effective for obtaining glass. Further in the present invention, since an effect as described above, the flames such as heating gas phase portion K, can be formed to relatively closer to the mass of the glass raw material GM 2. In the case of conventional heating burner, since such action is not, when the flame mass of the glass material GM 2 is too small, fine glass cullet or glass raw material powder as described above is problematic scattered.
  • the molten glass U ' the glass raw material GM 2 containing glass cullet is floated on the liquid surface, the glass material GM 2 containing glass cullet is heated from below, for further melting, dissolution of the initial stage It will be in the state used as the melt, what is called an initial melt (initial melt).
  • an initial melt initial melt
  • the amount of the fining agent remaining in the molten glass U ′ can be controlled by using the melting conditions such as the addition ratio, supply amount, and combustion amount of the fining agent in the glass raw material particles GM 1 as parameters. U ′ can be obtained. Further, by using the air in the molten burner 2, when preparing the initial melt is melt running initial melt early stage of the manufacturing apparatus, not contain ingredients according to the contribution of the glass raw material GM 2.
  • the composition of the glass raw material particles GM 1 and the glass raw material GM 2 is different, in order to form a more homogeneous molten glass G more efficiently, at least the glass raw material particles that form the initial melt at the initial stage of operation of the production apparatus It is preferable that the composition of GM 1 is matched with the composition range of the molten glass G or a composition approximate to the composition range of the molten glass G.
  • the glass raw material GM 2 including the glass cullet is supplied from the glass raw material supply unit 5 after the molten glass U ′ has been stored to some extent. That is, a glass raw material GM 2 were charged into the raw material inlet 5A, by the rotation of the conveying screw 5b, is charged into the reservoir portion 1h of glass raw material inlet 1A.
  • the glass cullet has a size variation in the range of several millimeters to several tens of millimeters, there is no problem in the method in which the glass cullet is introduced into the furnace from the raw material inlet 5A using the conveying screw 5b. Can be thrown in.
  • the glass raw material GM 2 charged into the storage unit 1 h floats in a lump (pile) on the liquid surface of the molten glass U ′ already stored, and is supplied below the air melting burner 2. It is pushed out toward. During this time, the glass raw material GM 2 is heated by heat transfer from the molten glass U ′ and gradually begins to melt from the lower side. In the supply region S, since the molten glass particles U discharged vertically downward from the air melting burner 2 are poured, the glass raw material GM 2 containing the glass cullet comes into contact with the molten glass particles U, and the glass raw material GM 2 is melted. Is promoted. This state will be described below with reference to FIG.
  • FIG. 5A shows an image of the upper portion of the lump of the glass raw material GM 2 including the glass cullet GC floating on the molten glass U ′ and the batch raw material GB.
  • the batch raw material GB having a small size enters the gap between the glass cullet GCs.
  • another glass cullet is laminated under the glass cullet GC, and the batch raw material is contained in the gap.
  • the lump of the glass raw material GM 2 including the glass cullet GC floating on the molten glass U ′ is heated while the lower surface of this lump is in contact with the molten glass U ′ (not shown), and the upper surface m 1 is the inner wall portion of the glass melting furnace 100.
  • the glass material GM 2 containing glass cullet GC in accordance with each amount of heating, the upper surface m 1, is heated and melted from the lower surface mixed in the molten glass U ', the molten glass G is gradually formed.
  • the molten glass particles U on the upper face m 1 falls, as shown in FIG. 5 (b), the molten glass particles U are spread on the upper surface m 1, into close contact with the part of the upper surface m 1.
  • This coherent molten glass particles U via the contact surface mc the upper m 1, occurs heat conduction, can be heated wide glass batch GM 2 through contact surfaces mc.
  • the molten glass particles U pass through the region of about 2000 ° C. to about 3000 ° C., which is the temperature of the heated gas phase portion K, and are heated to a high temperature, so that the temperature is much higher than that of the molten glass U ′. Moreover, it is much higher than the temperature of the glass raw material GM 2 in the solid state.
  • the molten glass particles U have a small diameter, the amount of heat conduction per unit area is extremely large. Further, the molten glass particles U becomes flat by the impact, to attach a wide range as compared with the particle size of the molten glass particles U, heat efficiently transfer heat to the glass raw material GM 2 of molten glass particles U. For this reason, the molten glass particles U flow into the gaps between the glass cullet GCs, and melt the surface of the glass cullet GC and its lower part.
  • FIG. 5C shows, as an example, a state in which a plurality of molten glass particles U that have fallen into an adjacent region have enlarged their respective contact surfaces mc so as to merge with each other and expand like a contact surface mc ′. Show. In such contact surfaces mc (mc '), result in contact in close contact with the glass raw material GM 2 were melted and the molten glass particles U are chemical reactions efficiently proceed.
  • the contact surface mc (mc ′) is larger than the particle volume, the reaction proceeds quickly and a highly uniform reaction occurs in a short time.
  • the droplet-shaped molten glass G according to the composition ratio of the glass raw material of the molten glass particle U and the glass raw material GM 2 is formed on the upper surface m 1 of the glass raw material GM 2 containing the glass cullet GC. Go.
  • the droplet-shaped molten glass G grows and merges with the adjacent similar molten glass G and flows downward or laterally, penetrates the lump, and mixes with the stored molten glass U ′. .
  • the molten glass in the storage part 1h increases.
  • the molten glass particles U that pour down adjacently have been described with reference to the drawings.
  • the molten glass particles U have a wide area on the upper surface m 1 depending on the input amount of the glass raw material particles GM 1 and the discharge range of the molten glass particles U. Cover. Therefore, in the supply area S, while covering the upper surface m 1 glass raw GM 2 by the deposition layer of the molten glass particles U, the melting of the above can proceed on the upper surface m 1.
  • the amount of heat contributing to the melting of the molten glass particles U glass material GM 2 is set to 50% of the heat required for melting the glass raw materials GM 2 to about 60%, from the lower surface due to the contribution of the molten glass U ' and melting, it is possible to substantially balance the melt from the top surface m 1 contributed by the molten glass particles U, it is possible to substantially uniformly melt the glass material GM 2 from the outer surface, it is efficient.
  • the energy saving operation can be realized as the input amount of the glass raw material particles GM 1 increases. That's right. Glass, however, since the ratio of the glass raw material GM 2 to the total amount of the molten glass G increasing the input amount of the glass raw material particles GM 1 is reduced, should the upper limit of the input amount of the glass raw material particles GM 1 occupy the molten glass G It can be determined according to the ratio of the raw material GM 2 , particularly the required amount of glass cullet to be occupied in the glass raw material GM 2 . Therefore, the input amount of the glass raw material particles GM 1 may be appropriately set in consideration of energy efficiency within the upper limit range.
  • the molten glass particles U is continued melting of glass raw material GM 2 and releases on the glass raw material GM 2.
  • the input amount of the glass raw material particles GM 1 and the glass raw material GM 2 becomes a quantitative ratio that satisfies the composition ratio for forming the molten glass G, and when the glass raw material GM 2 corresponding to this quantitative ratio is melted, it is stored.
  • the molten glass becomes a molten glass G having a target glass composition.
  • the molten glass G is manufactured using the glass melting furnace 100.
  • the molten glass G having a target composition ratio in the glass melting furnace 100 is clarified as necessary, transferred from the discharge port 1B to the molding device 6, and can be molded into the target shape by the molding device 6.
  • the glass raw material supply unit 5 supplies the glass raw material GM 2 containing glass cullet into the furnace body 1, and the melting formed by the air melting burner 2.
  • the glass raw material GM 2 can be to the glass raw material GM 2 provide efficient heat transfer from the molten glass particles U hot and liquid phase can be quickly melted. For this reason, molten glass can be efficiently manufactured using the air melting burner 2 while using the glass cullet without reducing the diameter so that the glass cullet can be supplied to the air melting burner 2.
  • the molten glass particles U whose composition is uniformly formed by the air melting burner 2 can be made to adhere to the lump of the glass raw material GM 2 little by little, the reactivity in the melting part of the glass raw material GM 2 is improved, The composition of the hybrid with the molten glass particles U can be made uniform.
  • the clarifier contained in the molten glass particle U acts on the molten glass G, so that the glass cullet with poor reactivity contained in the glass raw material GM 2 is melted. Even when the molten glass G is used, the defoaming effect in the molten glass G can be exhibited. For this reason, since the time for convection and storage of the molten glass G in the furnace body 1 for defoaming can be shortened, the high-quality molten glass G can be produced efficiently.
  • the amount of fining agent necessary for the target fining is 0.3% by mass of the total glass raw material and the amount of glass cullet added is 50% of the glass raw material GM 2 , the fining agent content of the glass cullet is 0. If the glass raw material GM 2 excluding the glass cullet contains 0.4% by weight of the fining agent, the glass raw material GM 2 containing the glass cullet is suitable as the target fining agent amount. It can be set to any value. In addition, when the amount of fining agent necessary for the target fining is 0.3% by mass of the total glass raw material and the amount of glass cullet added is 80% of the glass raw material GM 2 , the amount of fining agent in the glass cullet is 0.
  • the addition rate becomes excessively low, the defoaming effect is reduced, or the addition rate becomes excessively high and white bubbles or the like are generated due to precipitation of the molten salt. Can be prevented.
  • the fining agent has been described as an example.
  • the method for adjusting the addition amount can be similarly applied to other auxiliary materials added to the glass raw material GM 2 , for example, a colorant, a melting aid, and the like.
  • the glass melting furnace 100 described above can be realized by further adding an air melting burner 2 to a glass melting furnace having a conventional structure in which a plurality of oxygen burners for heating are provided on the furnace wall portion to melt batch raw materials.
  • an air melting burner 2 to a glass melting furnace having a conventional structure in which a plurality of oxygen burners for heating are provided on the furnace wall portion to melt batch raw materials.
  • Molten glass G can be manufactured.
  • the molten glass G is introduce
  • a glass product manufacturing apparatus the glass melting furnace 100 described above, a molding apparatus 6 for forming the molten glass G manufactured by the glass melting furnace 100, and the glass molded by the molding apparatus 6 are gradually cooled.
  • size can be illustrated.
  • the glass product manufacturing method and manufacturing apparatus since the molten glass G having a uniform composition efficiently manufactured by the glass melting furnace 100 is used, a high-quality glass product manufactured by energy saving is used. Can be provided.
  • FIG. 6 is a schematic configuration diagram showing a second embodiment of the glass melting furnace according to the present invention.
  • FIG. 7 is a sectional view taken along line BB shown in FIG.
  • the glass melting furnace 101 of the present embodiment is an air melting burner 2 ⁇ / b> A (second air melting burner) and a gas supply to the glass melting furnace 100 of the first embodiment.
  • Add a source 3A instead of the glass material grain supply portion 4 of the glass melting furnace 100 of the first embodiment, the glass material having a supply pipe 4b for supplying glass raw material particles GM 1 independent of the supply pipe 4a It has the structure provided with the particle
  • Other configurations are the same as those of the glass melting furnace 100 of the first embodiment, and the following description will focus on differences from the first embodiment.
  • the air melting burner 2A melts the glass raw material particles GM 1 in the heated gas phase portion K to form the molten glass particles U, and is a region S A that is a region in the furnace body 1 different from the supply region S (FIG. 7). 2) a second air-melting burner that discharges toward the reference). Although the detailed configuration of the air melting burner 2A is not particularly illustrated, it has the same configuration as the air melting burner 2.
  • Aerial melting burner 2A of the present embodiment as in release direction of the glass raw material particles GM 1 is vertically downward, is attached to a ceiling portion 1a between the molten burner 2 and the furnace wall portion 1d in the air.
  • the gas in the molten burner 2A is connected to the glass raw material particle supply section 4A via a supply pipe 4b, a similar form as the air in the molten burner 2, so that the glass raw material particles GM 1 is supplied through a supply pipe 4b It has become. Therefore, the glass melting furnace 101, a glass raw material particle supply unit 4A, the supply pipe 4a, or by appropriately changing the supply amount of supplying glass raw material particles GM 1 to 4b, it or to stop the supply.
  • the gas supply source 3A has the same configuration as that of the gas supply source 3 of the first embodiment, and the supply pipes 3a and 3b are respectively connected to the air-melting burner 2 of the previous first embodiment. It is connected to the air melting burner 2A in the form of. Therefore, the fuel gas is introduced from the gas supply source 3A through the supply pipe 3a into the fuel gas supply path of the air melting burner 2A, and the combustion gas is supplied from the gas supply source 3A through the supply pipe 3b. It is introduced into the 2A combustion gas supply path.
  • the air melting burner 2 ⁇ / b> A can inject the oxyfuel combustion flame H by the fuel gas and the combustion gas on the tip side (the lower side in FIG. 6) similarly to the air melting burner 2.
  • the inside, respectively, from the gas in the molten burner 2,2A can release glass material particles GM 1.
  • air in the molten burner 2A in order to release the glass raw material particles GM 1 toward the different regions S A of the supply area S, glass material grains GM 1 is not melting the glass raw material GM 2 directly, The molten glass G in the reservoir 1 h is increased by the molten glass particles U.
  • the molten glass U ′ which is the initial melt, can be quickly stored by introducing the glass raw material particles GM 1 into both the air melting burners 2 and 2A.
  • the amount ratio of the glass raw material GM 2 to the molten glass G is less than the ratio of the glass raw material particles GM 1, by placing the glass raw material particles GM 1 on both the gas in the molten burner 2, 2A, rapid The molten glass G can be manufactured. Further, for example, when the input amount of the glass raw material GM 2 containing glass cullet changes depending on the situation such as the inventory of circulating cullet in the process, the purchase price of cullet in the city, etc. by adjusting the input amount of the glass raw material particles GM 1, and capable of producing molten glass G.
  • the glass melting furnace 101 the case of producing a molten glass G without using the glass raw material GM 2, without stopping the gas in the molten burner 2, a glass raw material particles in both the air in the molten burner 2,2A By introducing GM 1 , molten glass G can be manufactured quickly.
  • FIG. 8 is a schematic configuration diagram showing a main part of a third embodiment of the glass melting furnace according to the present invention
  • FIG. 8 (a) is a horizontal sectional view
  • FIG. 8 (b) is FIG. Is a cross-sectional view taken along the line CC of FIG.
  • the glass melting furnace 102 of the present embodiment is the same as the glass melting furnace 100 of the first embodiment except that the oxygen burner 30 (auxiliary heating unit) is used.
  • a heating electrode 31 see FIG. 8B.
  • Oxygen-fuel burner 30 is supplied with fuel gas and oxygen from the not shown gas supply source, the oxygen combustion flame h formed sideways, an auxiliary heating unit for heating a mass of glass batch GM 2.
  • the oxygen burner 30 is installed side by side so that the flame ejection direction is the horizontal direction, one at each of the furnace wall portions 1f and 1e between the glass raw material inlet 1A and the supply region S. .
  • the installation height of each oxygen burner 30 can be set at an appropriate position slightly higher than the liquid level of the molten glass G.
  • Each oxygen burner 30 is installed at a certain distance from the glass raw material inlet 1A toward the outlet 1B. By these, scattering of glass raw material powder etc. can be prevented.
  • the oxygen burner 30 of the present embodiment preheats the glass raw material GM 2 until the glass raw material GM 2 constituting the lump reaches the supply region S.
  • the electrode 31 is a heating means for keeping the temperature of the molten glass G (U ′) stored in the storage part 1h within a certain range and causing it to convect, and is a rod-like shape capable of heating the molten glass G (U ′) from the inside side.
  • a structure in which a plurality of electrodes 31 are arranged vertically and horizontally can be employed.
  • the arrangement position of the electrodes 31 is preferably provided as appropriate at a position where the temperature of the molten glass G (U ′) is likely to decrease. For example, it provided on the downstream side of the furnace bottom portion 1b from a region where the mass by the glass raw material GM 2 is formed.
  • the glass melting furnace 102 of the present embodiment since the glass raw material GM 2 that includes the oxygen burner 30 and forms a lump can be preheated, the melting capacity of the glass raw material GM 2 by the molten glass particles U is relatively increased. As a result, melting of the glass raw material GM 2 is further accelerated. Further, it is possible to reduce the temperature drop of the molten glass particles U dropped on the glass raw material GM 2, capable of producing molten glass G at a stable constant speed. Further, oxygen-fuel burner 30 in accordance with the input amount of the glass raw material GM 2, may be carried out on-off control. Oxygen-fuel burner 30, to heat the glass batch GM 2 which is turned on, to suppress the temperature drop of the molten glass G (U ') from investing.
  • the temperature of the molten glass G (U ′) stored in the storage unit 1h can be stabilized.
  • to provide the electrode 31 on the downstream side of the furnace bottom portion 1b of the area mass is formed, to reduce the temperature drop due to introduction of the glass raw material GM 2, a melt of the lower surface m 2 side stable Can be
  • the oxygen burner 30 and the electrode 31 are provided side by side, they combine to suppress the temperature drop of the molten glass G (U ′) and increase the melting ability of the molten glass particles U. it can.
  • FIG. 9 is a schematic configuration diagram showing the main part of the fourth embodiment of the glass melting furnace according to the present invention
  • FIG. 10 is a schematic configuration diagram showing the main part of the fifth embodiment
  • FIG. It is a typical block diagram which shows the principal part of 6 embodiment.
  • the fourth to sixth embodiments are embodiments relating to the arrangement posture and arrangement position of the air-melting burner 2, and the respective components are the same as those of the glass melting furnace 100 of the first embodiment.
  • the glass melting furnace 103 according to the fourth embodiment is configured such that the air melting burner 2 is inclined obliquely downward with respect to the vertical axis and directed toward the glass raw material supply unit 5. It is attached to the ceiling portion 1a in a posture of discharging the molten glass particles U (in the direction from the discharge port 1B side to the raw material input port 5A side). Also, release the central axis of the gas in the molten burner 2 is directed to the center O S of the supply area S.
  • the heating gas g jetted from the gas in the molten burner 2 and the molten glass particles U is to hit diagonally downward toward the upstream side of the raw material supply direction of the glass raw material GM 2, frit GM
  • the forward movement of the lump consisting of 2 can be suppressed.
  • it is possible to prevent the glass material GM 2 will move to the discharge port 1B side through the supply area S before melt sufficiently, can be sufficiently melted mass of glass raw material GM 2.
  • the glass melting furnace 104 of the fifth embodiment is configured such that the air melting burner 2 is inclined obliquely downward with respect to the vertical axis and directed toward the discharge unit 1 ⁇ / b> B (that is, In the direction from the raw material inlet 5A side to the outlet 1B side), it is attached to the ceiling portion 1a in a posture to discharge the molten glass particles U. Also, release the central axis of the gas in the molten burner 2 is directed to the center O S of the supply area S.
  • the heating gas g jetted from the gas in the molten burner 2 and the molten glass particles U hits the downstream side of the glass raw material GM 2 (outlet 1B side), promote the forward movement of the masses it can.
  • the time until the glass raw material GM 2 reaches the supply region S can be shortened, the lump becomes too large and the supply of the glass raw material GM 2 is delayed, or the molten glass G (U ′) is supplied to the glass raw material inlet 1A. It is possible to prevent the temperature from being excessively lowered in the vicinity.
  • the molten glass manufacturing apparatus 105 is configured such that the in-air molten burner 2 is inclined obliquely downward with respect to the vertical axis and directed toward the discharge unit 1 ⁇ / b> B. It is attached to the upper part of the furnace wall part 1c with the attitude
  • FIG. 11 is a schematic diagram, the glass raw material supply unit 5 and the air melting burner 2 are drawn so as to be arranged on the same plane, but their positions in the depth direction are shifted. Also good. For example, if the air melting burner 2 is disposed between the two glass raw material supply parts 5, it is difficult to interfere with the glass raw material supply part 5, so that the air melting burner 2 does not interfere with the glass raw material supply part 5. Can be installed.
  • the air melting burner 2 since the arrangement posture of the air melting burner 2 is the same as that of the fifth embodiment, the air melting burner 2 has the same action as the fifth embodiment. Moreover, since it is provided in the furnace wall part 1c unlike 5th Embodiment, the glass raw material particle supply part 4 can be installed in the exterior of the glass melting furnace 105 near the furnace wall part 1c. Therefore, close the loading position of the glass raw material particles GM 1 and the glass raw material GM 2, the position of the device according to the glass raw material can be aggregated, thereby improving the work efficiency, transportation efficiency of the glass raw material at the time on.
  • This embodiment is an example in the case where the in-air melting burner 2 is provided on the furnace wall 1 c of the glass melting furnace 105.
  • the in-air melting burner 2 is one of the furnace wall parts 1e and 1f close to the furnace wall part 1c when the glass raw material supply part 5 is constituted by one unit or when the interval between the furnace wall parts 1e and 1f is narrow. Or both. In this case as well, the same operation as in this embodiment can be obtained. Moreover, since it is hard to interfere with the glass raw material supply part 5, arrangement
  • FIG. 12 is a schematic configuration diagram showing the main part of a seventh embodiment of the molten glass manufacturing apparatus according to the present invention
  • FIG. 12 (a) is a longitudinal sectional view
  • FIG. 12 (b) is FIG. 2 is a cross-sectional view taken along the line DD of FIG.
  • the glass melting furnace 106 of the seventh embodiment replaces the glass raw material charging port 1 ⁇ / b> A and the glass raw material supply unit 5 of the glass melting furnace 100 of the first embodiment with a glass raw material.
  • the inlet 1C and the glass raw material supply part 32 are provided.
  • a description will be given centering on differences from the first embodiment.
  • the glass raw material inlet 1C of the present embodiment is a rectangular opening provided in the middle of the furnace wall 1c in the height direction and penetrating in the wall thickness direction.
  • the opening shape of the glass raw material inlet 1C in the furnace wall 1c is a rectangular shape in which the horizontal width is substantially the same as that of the supply region S and the width is narrowed in the height direction.
  • the height of the glass raw material inlet 1C is set to the same height as the glass raw material inlet 1A of the first embodiment.
  • Glass raw material supply unit 32 in the present embodiment in order to put the glass raw material GM 2 from the outside of the glass melting furnace 106, a hopper 32a which raw material inlet 32A, the bottom opening 32B in the bottom provided in the upper, glass end the glass raw material GM 2 which is connected to the raw material inlet 1C introduced through a bottom opening 32B and a transport pipe 32d for guiding along a diagonal direction that is inclined downwardly toward the glass raw material inlet 1C.
  • a glass raw material GM 2 were charged into the hopper 32a, the glass raw material GM 2 is pushed out by the not shown blanket feeder for extruding aligned glass raw materials GM 2 in the width direction, the conveying pipe from the bottom opening 32B It falls to the lower side along 32d, and is charged into the reservoir 1h from the glass raw material inlet 1C. Since the glass raw material inlet 1C has a flat rectangular opening parallel to the liquid surface, the glass raw material GM 2 is charged in a state of being shaped into a flat layer.
  • the glass raw material GM 2 when is stored, the glass raw material GM 2 is to form a mass of a layered molten glass G (U' that floats on the liquid surface of) Become.
  • the formed mass when the charged glass raw material GM 2 continues, of a beltlike shape having substantially the same width as the horizontal width of the glass raw material inlet 1C, pushed toward the furnace wall portion 1c in the furnace wall portion 1d side Then, it is supplied to a supply region S indicated by a two-dot chain line in FIG. Glass raw materials GM 2 supplied to the supply area S, as in the above embodiments is efficiently melted by emitted molten glass particles U.
  • the layer thickness of the mass is equalized. Therefore, to reduce the imbalance of the melting rate of the glass raw material GM 2 according to the layer thickness variation can be reduced melt remaining. Further, according to the glass melting furnace 106, for supplying a free-fall of the glass raw material GM 2, a simple device configuration.
  • FIG. 13 is a schematic configuration diagram showing a main part of an eighth embodiment of the glass melting furnace according to the present invention
  • FIG. 13 (a) is a longitudinal sectional view
  • FIG. 13 (b) is a diagram of FIG. 13 (a). It is sectional drawing which follows the EE line.
  • the glass melting furnace 107 of the eighth embodiment replaces the glass raw material inlet 1 ⁇ / b> A and the glass raw material supply unit 5 of the glass melting furnace 100 of the first embodiment with a connecting hole. 1D, the glass raw material supply part 33 is provided.
  • the in-air melting burner 2 is installed in the same manner as in the fifth embodiment.
  • a description will be given centering on differences from the first embodiment.
  • connection hole 1D is a through-hole having a circular cross section provided through the furnace wall portion 1c obliquely downward in an intermediate portion in the height direction of the furnace wall portion 1c in order to connect the glass raw material supply unit 33. is there.
  • the height of the connecting hole 1D is provided at a position higher than the glass raw material inlet 1A of the first embodiment.
  • Glass material supply unit 33 of the present embodiment in order to put the glass raw material GM 2 from the outside of the furnace body 1, a hopper 33a which raw material inlet 33A, the bottom opening 33B in the bottom provided in the upper, end connecting hole the glass raw material GM 2 which is inserted into 1D introduced from concatenated bottom opening 33B toward the reservoir 1h and a conveying pipe 33d for guiding along a diagonal direction that is inclined downward.
  • the transfer pipe 33d protrudes obliquely downward from the furnace wall 1c toward the interior of the storage part 1h, and a glass material inlet 33e that is a circular opening is formed at the tip.
  • the glass raw material inlet 33e is opened above the liquid surface of the integrated molten glass G (U '), the opening position, the glass material GM 2 falling obliquely from a glass raw material inlet 33e is supplied region It is set to an appropriate height spread on S.
  • the conveying pipe 33d from the bottom opening 33B Are pushed out obliquely downward and fallen, and discharged from the glass raw material inlet 33e into the air in the storage portion 1h and charged. Therefore, the glass material GM 2 released is released each a parabola according to the initial speed in the glass raw material inlet 33e, it is sprayed onto the supply area S.
  • the glass raw material GM 2 sprayed and supplied to the supply region S is efficiently melted by the molten glass particles U released from the air melting burner 2 as in the above embodiment.
  • the glass melting furnace 107 of this embodiment in order to slightly spread the glass raw material GM 2 from above the molten glass G (U '), even with a small opening area of the glass raw material inlet 33e, extensively frit GM 2 can be supplied. Further, the glass raw material GM 2 that has been sprinkled to form a mountain-shaped lump, like the structure of the fifth embodiment, promotes the forward movement of the lump by the injection of the heated gas g and the molten glass particles U, and oxygen The glass raw material GM 2 forming a lump by the combustion flame H is melted.
  • first air-melting burners and second air-melting burners are not limited to one, and one or more appropriate numbers can be provided.
  • a plurality of first air-melting burners and second air-melting burners may be provided, for example, in accordance with the plurality of arrangements of the glass raw material supply unit 5 of the embodiment.
  • the first air melting burner and the second air melting burner may be provided anywhere on the ceiling or furnace wall of the furnace body as long as the molten glass particles can be discharged and supplied.
  • the example in which the air melting burner 2 is provided on the furnace wall portion 1c in order to incline the discharge direction of the air melting burner 2 has been described. However, it is provided on the furnace wall portions 1f and 1e. It may be done. When the furnace wall portion 1f, provided 1e has only to be mounted at an angle in a plane perpendicular to the discharge direction may be perpendicular with respect to the raw material supply direction of the glass raw material GM 2.
  • the technology of the present invention can efficiently produce a high-quality molten glass having a uniform composition by an energy-saving operation using a glass raw material containing glass cullet, and can be used for building glass, vehicle glass, and optical glass. It can be widely applied to the production of medical glass, display glass, and other general glass products.
  • the entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2011-024273 filed on February 7, 2011 are incorporated herein by reference. .
  • Glass raw material inlet 100 ... Glass melting furnace , 101,102,103,104,105,106,107 ... glass melting furnace, G, U '... molten glass, GM 1 ... glass raw material particles, GM 2 ... glass raw material, GC ... glass cullet, GB ... batch material, H, h ... oxygen combustion flame, K Heating gas phase, S ... supply region, U ... molten glass particles, g ... heating gas, S1 ... glass melting step, S2 ... molding step, S3 ... annealing step, S4 ... cutting step, S A ... other areas.

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  • Glass Melting And Manufacturing (AREA)
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Abstract

La présente invention concerne la production efficace de verre fondu et de produits de verre en utilisant un matériau de départ de verre comprenant des déchets de verre et en appliquant un procédé de fusion de verre à la volée dans un four de fusion de verre. La présente invention concerne un four de fusion de verre comprenant : un corps de four (1) dans lequel du verre fondu est accumulé ; une section d'alimentation de matériau de départ de verre (5) qui est disposée sur un côté du corps de four (1), et qui alimente un matériau de départ de verre (GM2) comprenant des déchets de verre dans une zone d'alimentation (S) au-dessus du verre fondu (G) accumulé à l'intérieur du corps de four ; une première section d'injection qui est disposée sur une partie du corps de four (1), et qui injecte des particules de matériau de départ de verre (GM1) vers la zone d'alimentation (S) ; et un premier moyen de chauffage qui génère, au-dessus de la zone d'alimentation (S), une première partie en phase gazeuse chauffante (K) dans laquelle les particules de matériau de départ de verre (GM1) provenant de la première section d'injection sont formées en particules de verre fondu, au-dessous de la première section d'injection.
PCT/JP2012/052550 2011-02-07 2012-02-03 Four de fusion de verre, procédé pour produire du verre fondu, procédé pour produire des produits de verre et appareil pour produire des produits de verre WO2012108364A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012556866A JP5966933B2 (ja) 2011-02-07 2012-02-03 ガラス溶融炉、溶融ガラスの製造方法、ガラス製品の製造方法、およびガラス製品の製造装置
CN201280007241.8A CN103339072B (zh) 2011-02-07 2012-02-03 玻璃熔融炉、熔融玻璃的制造方法、玻璃制品的制造方法及玻璃制品的制造装置

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JP2011-024273 2011-02-07
JP2011024273 2011-02-07

Publications (1)

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WO2012108364A1 true WO2012108364A1 (fr) 2012-08-16

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JP (1) JP5966933B2 (fr)
CN (1) CN103339072B (fr)
TW (1) TW201236986A (fr)
WO (1) WO2012108364A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9102560B2 (en) 2013-01-17 2015-08-11 Sibelco Asia Pte. Ltd. Charging load for making TFT glass and method of making same
FR3025195A1 (fr) * 2014-08-29 2016-03-04 Kimpe Procede de fabrication de verre colore et dispositif pour sa mise en oeuvre
WO2018039398A1 (fr) * 2016-08-26 2018-03-01 Corning Incorporated Appareil et procédé pour la mise en forme d'un article en verre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115180824B (zh) * 2022-07-05 2024-01-16 河北光兴半导体技术有限公司 防火玻璃组合物、防火玻璃及其制备方法

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JP2003183031A (ja) * 2001-12-18 2003-07-03 Nippon Electric Glass Co Ltd ガラス繊維製造用電気溶融炉及び繊維用ガラスの溶融方法
JP2010222217A (ja) * 2009-03-25 2010-10-07 Nippon Electric Glass Co Ltd ガラス溶融炉
WO2011001757A1 (fr) * 2009-06-29 2011-01-06 旭硝子株式会社 Procédé pour la fabrication de verre fondu, four de fusion de verre, dispositif de fabrication d'un article en verre et procédé de fabrication d'un article en verre
WO2011013594A1 (fr) * 2009-07-27 2011-02-03 旭硝子株式会社 Four de fusion du verre, procédé de production de verre fondu, appareil de production du verre, et procédé de production du verre

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CN101323499A (zh) * 2008-07-25 2008-12-17 昆明理工大学 一种玻璃飞行熔化的制造方法
CN102803160B (zh) * 2009-06-18 2015-02-18 旭硝子株式会社 原料供给方法及原料供给装置、以及玻璃板的制造装置及制造方法

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Publication number Priority date Publication date Assignee Title
JP2003183031A (ja) * 2001-12-18 2003-07-03 Nippon Electric Glass Co Ltd ガラス繊維製造用電気溶融炉及び繊維用ガラスの溶融方法
JP2010222217A (ja) * 2009-03-25 2010-10-07 Nippon Electric Glass Co Ltd ガラス溶融炉
WO2011001757A1 (fr) * 2009-06-29 2011-01-06 旭硝子株式会社 Procédé pour la fabrication de verre fondu, four de fusion de verre, dispositif de fabrication d'un article en verre et procédé de fabrication d'un article en verre
WO2011013594A1 (fr) * 2009-07-27 2011-02-03 旭硝子株式会社 Four de fusion du verre, procédé de production de verre fondu, appareil de production du verre, et procédé de production du verre

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9102560B2 (en) 2013-01-17 2015-08-11 Sibelco Asia Pte. Ltd. Charging load for making TFT glass and method of making same
FR3025195A1 (fr) * 2014-08-29 2016-03-04 Kimpe Procede de fabrication de verre colore et dispositif pour sa mise en oeuvre
WO2018039398A1 (fr) * 2016-08-26 2018-03-01 Corning Incorporated Appareil et procédé pour la mise en forme d'un article en verre
JP2019524630A (ja) * 2016-08-26 2019-09-05 コーニング インコーポレイテッド ガラス物品形成装置および方法
EP3896037A1 (fr) * 2016-08-26 2021-10-20 Corning Incorporated Procédé pour la mise en forme d'un article en verre
JP7058641B2 (ja) 2016-08-26 2022-04-22 コーニング インコーポレイテッド ガラス物品形成装置および方法
US11319234B2 (en) 2016-08-26 2022-05-03 Corning Incorporated Apparatus and method for forming a glass article

Also Published As

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CN103339072B (zh) 2016-04-06
JPWO2012108364A1 (ja) 2014-07-03
JP5966933B2 (ja) 2016-08-10
CN103339072A (zh) 2013-10-02
TW201236986A (en) 2012-09-16

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