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WO2013011838A1 - Dispositif de fusion de verre, dispositif de formation d'une fibre de verre et procédé de formation d'une fibre de verre - Google Patents

Dispositif de fusion de verre, dispositif de formation d'une fibre de verre et procédé de formation d'une fibre de verre Download PDF

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Publication number
WO2013011838A1
WO2013011838A1 PCT/JP2012/067129 JP2012067129W WO2013011838A1 WO 2013011838 A1 WO2013011838 A1 WO 2013011838A1 JP 2012067129 W JP2012067129 W JP 2012067129W WO 2013011838 A1 WO2013011838 A1 WO 2013011838A1
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WO
WIPO (PCT)
Prior art keywords
glass
thin film
molten glass
film forming
forming member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/067129
Other languages
English (en)
Japanese (ja)
Inventor
鎌太郎 小川
中村　幸一
平山　紀夫
俊介 原島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Boseki Co Ltd
Original Assignee
Nitto Boseki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitto Boseki Co Ltd filed Critical Nitto Boseki Co Ltd
Priority to JP2013524654A priority Critical patent/JP5892166B2/ja
Publication of WO2013011838A1 publication Critical patent/WO2013011838A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/20—Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
    • C03B5/03—Tank furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/18—Stirring devices; Homogenisation
    • C03B5/193—Stirring devices; Homogenisation using gas, e.g. bubblers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/225—Refining
    • C03B5/2252—Refining under reduced pressure, e.g. with vacuum refiners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/225—Refining
    • C03B5/2257—Refining by thin-layer fining
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels

Definitions

  • the present invention relates to a glass melting apparatus for melting a glass raw material, a glass fiber manufacturing apparatus and a glass fiber manufacturing method for manufacturing glass fiber using the glass melting apparatus.
  • Patent Document 1 describes that a glass raw material is melted at a high temperature by heating the skull crucible by induction heating, and further, the life of the skull crucible is extended by cooling the skull crucible with a cooling pipe. Patent Document 1 describes that bubbles contained in the molten glass are raised to the surface of the molten glass and ruptured by high-temperature purification or addition of a purification agent.
  • Patent Document 2 discloses that a glass raw material is melted by heating a skull crucible with high-frequency energy of a coil mechanism, and the molten glass is cooled by a cooling bridge disposed on the top of the skull crucible, whereby molten glass in the skull crucible is obtained. It is described to promote convection. Patent Document 2 describes that the influence of the coil mechanism on the quality is minimized by disposing the outlet of the molten glass above the coil mechanism.
  • Patent Document 3 describes melting a glass raw material at a high temperature using an iridium melting vessel with a tubular outlet. Patent Document 3 describes that the outlet of the melting vessel is clogged by cooling the lower portion of the melting vessel to solidify the molten glass and clarifying the molten glass in the melting vessel.
  • Patent Document 4 describes that bubbles are raised and burst on the surface of the melt by flowing the melt into a thin layer of 5 to 10 cm and flowing it in a horizontal flow path.
  • Patent Document 4 describes that a conduit is immersed in the melt while being inclined downward toward the downstream, whereby bubbles are separated from the melt and the conduit is caused to flow backward.
  • Patent Documents 1 to 4 have the following problems.
  • an object of the present invention is to provide a glass melting apparatus, a glass fiber manufacturing apparatus, and a glass fiber manufacturing method capable of effectively clarifying and homogenizing molten glass when melted at a high temperature.
  • a glass melting apparatus includes a glass melting furnace having a bottom wall and a side wall formed of an electric heating member that generates resistance when energized, and an outlet port through which molten glass is drawn, and is disposed above the glass melting furnace.
  • the glass was introduced and the bottom wall between the inlet and the outlet was erected, dammed the molten glass melted by the resistance heating of the bottom wall and the side wall caused by current flow, and overflowed
  • a thin film forming member having a thin film forming surface formed into a thin film shape by lowering and extending the molten glass.
  • the molten glass melted by the resistance heating of the bottom wall and the side wall is blocked by the thin film forming plate, and the molten glass overflowing from the thin film forming plate is the thin film forming surface on the outlet side.
  • the film is thinly drawn to form a thin film, and then led out to the outlet.
  • the bubbles cannot maintain their shape and break the bubbles, so that a very excellent clarification effect can be obtained.
  • the heat transfer efficiency to a molten glass will become high when a molten glass is reduced in thickness, fusion
  • the glass raw material put into the glass melting furnace can be heated and melted by heat conduction and radiation from the bottom wall and the side wall, so that it melts in the entire area of the glass melting furnace.
  • the glass can be heated. For this reason, it is possible to heat and melt the glass raw material even when there is no molten glass in the glass melting furnace as in the case of heat-up, and the outlet itself is resistant even if no additional heating means is provided near the outlet. Since it generates heat, it can be prevented that the temperature of the molten glass drawn from the outlet is lowered.
  • the heating efficiency of a glass raw material is high.
  • the easiness of electricity flow can be changed by partially changing the thickness of the bottom wall and the side wall, the temperature distribution of the glass melting furnace can be changed.
  • it is not necessary to put a separate heating member in the molten glass it is possible to prevent impurities from being mixed into the molten glass.
  • the thin film forming member is formed in a plate shape, and is arranged between the vertical lower side of the inlet and the outlet, the lower end is in contact with the bottom wall, and the side end is in contact with the side wall. And an upper passage part that allows the molten glass to pass therethrough at the upper end part.
  • the thin film forming member is configured in this manner, the thin film forming member is arranged between the lower portion in the vertical direction of the inlet and the outlet, so that the molten glass melted by the resistance heat generation of the bottom wall and the side wall is directly drawn. It is blocked by the thin film forming member without being led out to the outlet.
  • the thin film forming member is preferably inclined toward the inlet side.
  • the molten glass that has passed through the upper passage portion slides down the thin film forming surface of the thin film forming member without leaving the thin film forming member, so the molten glass is smoothly formed into a thin film. Can be formed.
  • the thin film forming member can also be formed in a tubular shape surrounding the outlet, with the lower end being in contact with the bottom wall.
  • the outlet is covered with the thin film forming member, and a thin film forming plate is formed inside the thin film forming member. Then, the molten glass melted by the resistance heating of the bottom wall and the side wall is not led out directly to the outlet, but is blocked by the thin film forming member, and the molten glass in the glass melting furnace is adjusted by adjusting the input amount of the glass raw material.
  • the molten glass overflowing from the thin film forming member descends along the thin film forming surface of the thin film forming member to form a thin film. . Thereby, molten glass can be formed in a thin film shape.
  • the thin film forming member preferably has a shape in which the thin film forming surface is narrowed from the upper part in the vertical direction toward the lower part in the vertical direction.
  • the glass melting furnace is preferably made of iridium or an iridium-based alloy.
  • the glass raw material can be melted at a high temperature equal to or higher than the melting point of silica, so that the melting time of the glass raw material can be dramatically shortened.
  • iridium does not generate silicon from molten glass even when it comes into contact with molten glass, silicon particles in the molten glass can be reduced and the quality of the molten glass can be improved.
  • a casing covering the glass melting furnace and an inert gas supply means for supplying an inert gas into the casing.
  • an upper partition plate provided between the lower portion in the vertical direction of the charging port and the thin film forming member, and having a lower passage portion through which the molten glass passes from the bottom of the glass melting furnace.
  • a glass fiber manufacturing apparatus is introduced into any one of the glass melting apparatuses described above, a storage tank into which molten glass disposed below the glass melting furnace and drawn from the outlet is introduced, and the storage tank. And a fiberizing apparatus for fiberizing and spinning the molten glass.
  • the glass fiber manufacturing apparatus according to the present invention, high-quality glass fibers are manufactured because the molten glass melted by the resistance heating of the bottom wall and the side wall is clarified and homogenized by the thin film forming member and then fiberized. be able to.
  • a glass fiber manufacturing method is a glass fiber manufacturing method using the glass fiber manufacturing apparatus described above, in which a glass raw material is charged into a glass melting furnace from a charging port, and the bottom wall and the side wall are energized. The bottom wall and the side wall are heated by resistance to melt the glass raw material charged into the glass melting furnace, and after the molten glass is formed into a thin film by the thin film forming member, the molten glass is drawn from the outlet and introduced into the storage tank. The molten glass introduced into the storage tank is made into a fiber by a fiberizing device to produce glass fiber.
  • high-quality glass fibers are manufactured in order to fiberize the molten glass melted by the resistance heat generation of the bottom wall and the side wall after clarification and homogenization by the thin film forming member. be able to.
  • the glass melting apparatus has a casing that covers the glass melting furnace, and the inside of the casing is preferably in an inert gas atmosphere.
  • the inside of a casing is made into inert gas atmosphere, since the whole glass melting furnace can be isolated from air
  • the molten glass it is preferable to heat the molten glass to 1700 to 2000 ° C. by resistance heating of the bottom wall and the side wall.
  • the melting time of the glass raw material can be drastically shortened because it is melted by the single silica as the main component of the glass.
  • clarification and homogenization of molten glass can be effectively performed when melted at a high temperature.
  • FIG. 5 is a cross-sectional view of the glass melting furnace shown in FIG. 4 taken along the line VV. It is a figure which shows the other example of a plate-shaped thin film formation member. It is a figure which shows the other example of a tubular thin film formation member. It is a schematic diagram of the glass fiber manufacturing apparatus which attached the vacuum degassing furnace.
  • FIG. 1 is a schematic diagram of a glass fiber manufacturing apparatus according to the first embodiment.
  • the glass fiber manufacturing apparatus 1 which concerns on 1st Embodiment is provided with the glass melting apparatus 10 mounted in the floor 2, and the fiberization equipment 30 arrange
  • the fiberization equipment 30 arrange
  • the glass melting apparatus 10 includes a glass melting furnace 11 that melts a glass raw material such as a glass raw material powder or a glass lump, and a casing 18 that covers the glass melting furnace 11.
  • the glass raw material powder is a glass raw material mixed with powders of metal oxides such as silica and alumina
  • the glass lump is a marbled glass raw material cooled once the glass raw material powder is melted, or this marbled glass raw material Is a cullet-shaped glass raw material.
  • a cullet-shaped glass raw material In order to increase the homogeneity of the molten glass, it is preferable to use a cullet-shaped glass raw material.
  • the glass raw material for an E glass, T glass, a silica fiber, and nitride glass manufacture use can be used conveniently.
  • the glass melting furnace 11 is disposed below the inlet 19 into which the glass raw material is charged and is formed in a box shape opened upward, and the bottom wall 12 on which the outlet 15 from which the molten glass is drawn is formed. And a side wall 13 erected on the bottom wall 12. As long as the glass melting furnace 11 has a bottom wall 12 and a side wall 13, the glass melting furnace 11 may have any shape such as a circular shape in a top view and a polygonal shape in a top view.
  • the bottom wall 12 and the side wall 13 which comprise the glass melting furnace 11 are comprised with the electrothermal member (electric conductor) which carries out resistance heat_generation
  • the bottom wall 12 and the side wall 13 are preferably made of a platinum group metal that has low reactivity with the molten glass and is less susceptible to erosion by the molten glass.
  • the melting point is 2447 ° C. and the mechanical strength at high temperature is high. It is preferably composed of excellent iridium (Ir) or an iridium-based alloy.
  • the iridium-based alloy preferably contains 50% or more of iridium, and more preferably 60% or more of iridium.
  • the bottom wall 12 and the side wall 13 may be configured by covering the surface of a general furnace material such as brick with a platinum group metal such as iridium (Ir) and an iridium-based alloy.
  • a pair of electrode portions 13a is formed on the side wall 13, and a power source 14 for supplying current is connected to each electrode portion 13a. For this reason, by supplying current from the power source 14 to the glass melting furnace 11 via each electrode portion 13 a, the glass melting furnace 11 generates resistance heat, and heat conduction and radiation from the glass melting furnace 11 cause the glass melting furnace 11 to generate heat. It is possible to melt the charged glass raw material. In addition, since the glass melting furnace 11 is made to generate resistance heat, the glass melting furnace 11 is preferably small. And this glass melting apparatus 10 is mainly used for the marble melt method (MM method) which melts the glass raw material of a glass lump, but it can also be used for the direct melt method (DM method) etc. which melts glass raw material powder. Good.
  • MM method marble melt method
  • DM method direct melt method
  • the bottom wall 12 and the side wall 13 which comprise the glass melting furnace 11 are comprised by the electrothermal member, the ease of electricity passage can be changed by changing the thickness according to a place. For this reason, the temperature distribution in the glass melting furnace 11 can be adjusted by partially changing the thickness of the bottom wall 12 and the side wall 13. For example, when the glass raw material settles in the bottom of the furnace of the glass melting furnace 11, by making the path connecting the pair of electrode parts 13a through the lower part in the vertical direction of the charging port 19 thicker than the other parts, Glass raw materials can be efficiently melted.
  • each route is preferably the shortest distance.
  • Such a glass melting furnace 11 is partitioned into the first region A and the second region B by the upper partition plate 16.
  • the first region A is a region that is arranged vertically below the charging port 19 and melts the glass raw material charged into the glass melting furnace 11.
  • the second region B is a region where the molten glass is clarified and the outlet 15 is formed in the bottom wall 12.
  • a bubbler 24 is inserted in the first region A of the glass melting furnace 11.
  • the bubbler 24 is a tubular member that ejects an inert gas into the molten glass in order to promote melting of the glass raw material.
  • the jet port of the bubbler 24 is preferably disposed near the bottom of the first region A and near the lower portion of the input port 19 in the vertical direction.
  • the inert gas ejected from the bubbler 24 may be any kind of inert gas, but is preferably a non-oxidizing gas from the viewpoint of preventing the molten glass from being oxidized. Nitrogen gas is most preferable in terms of stable supply.
  • the bubbler 24 may be inserted into the first region A of the glass melting furnace 11 from any position. However, if the bubbler 24 is inserted from above the first region A of the glass melting furnace 11, the glass melting The structure of the furnace 11 can be simplified.
  • the upper partition plate 16 is formed in a flat plate shape, and allows the molten glass in the first region A to pass through the second region B only from the bottom of the glass melting furnace 11.
  • the both end portions of the upper partition plate 16 are in contact with the side walls 13 and seal between the side walls 13.
  • the upper end portion of the upper partition plate 16 is disposed at a position higher than the liquid level of the molten glass so as to dam the surface layer of the molten glass.
  • the upper end of the glass melting furnace 11 may be arranged at any position as long as it can dam the surface layer of the molten glass in the first region A. For example, it may extend to the upper surface of the glass melting furnace 11. .
  • a passage port 16 a through which the molten glass passes from the vicinity of the inner bottom portion of the glass melting furnace 11 is formed.
  • the passage port 16a may have any shape and configuration as long as the molten glass can pass through.
  • the passage opening 16 a may be formed by separating the lower end portion of the upper partition plate 16 from the bottom wall 12, and the passage opening 16 a is formed by forming a through hole in the lower end portion of the upper partition plate 16. Also good.
  • the passage port 16a is located below at least half of the height (depth) of the glass melting furnace 11.
  • the standing direction of the upper partition plate 16 configured in this way may be a direction perpendicular to the horizontal direction, and is a direction inclined from the direction perpendicular to the horizontal direction to the inlet 19 side. Also good.
  • the upper partition plate 16 may change the standing direction in the middle.
  • the lower part immersed in the molten glass is directed to the direction inclined from the direction perpendicular to the horizontal direction to the inlet 19 side.
  • the upper part which is not immersed in the surface may be directed in a direction perpendicular to the horizontal direction.
  • the upper partition plate 16 is composed of an electrically heated member that generates resistance when energized, like the bottom wall 12 and the side wall 13 of the glass melting furnace 11.
  • the upper partition plate 16 is particularly preferably composed of a platinum group metal, and is preferably composed of iridium (Ir) or an iridium-based alloy.
  • the upper partition plate 16 may be configured by covering the surface of a general furnace material such as brick with a platinum group metal such as iridium (Ir) and an iridium-based alloy.
  • a flat thin film forming member 25 is disposed between the upper partition plate 16 and the outlet 15.
  • the thin film forming member 25 dams up the molten glass melted in the first region A, forms a flow path for the molten glass to flow upward from below with the upper partition plate 16, and draws the overflowed molten glass. It is led out to the outlet 15 by being lowered along the thin film forming surface 25b on the outlet 15 side.
  • FIG. 2 is a cross-sectional perspective view of the glass melting furnace shown in FIG.
  • the thin film forming member 25 is formed in a plate shape. Both end portions of the thin film forming member 25 are in contact with the side walls 13 to seal between the side walls 13. The lower end portion of the thin film forming member 25 is in contact with the bottom wall 12 and seals between the bottom wall 12.
  • the upper passage part 25a which lets the molten glass fuse
  • the upper passage portion 25a may be formed by, for example, the upper end surface of the thin film forming member 25, or may be formed by a through hole or a notch formed in the thin film forming member 25.
  • the upper passage portion 25a is formed in a horizontal plane at a position slightly lower than the liquid level of the molten glass in order to form the molten glass into a thin film having a uniform thickness.
  • a thin film forming surface 25b is formed on the drawing outlet 15 side of the thin film forming member 25.
  • the thin film forming surface 25b is formed by lowering and extending the molten glass that has passed through the upper passage portion 25a.
  • the thin film forming surface 25b is formed in a flat shape in order to make the thickness of the thin molten glass uniform. However, if the molten glass can be formed in a thin film shape, the thin film forming surface 25b may be formed in a curved surface curved in the vertical direction or the horizontal direction.
  • the thin film forming member is described as having a plate shape.
  • the overflowing molten glass can be lowered along the thin film forming surface of the thin film forming member without leaving the thin film forming member.
  • Any shape is possible if possible.
  • the thin film forming member may be tubular.
  • the thin film forming member when the thin film forming member is plate-shaped, it may be a curved surface or a step shape, and when the thin film forming member is tubular, it may be a mortar shape or a step shape.
  • the thin film forming member 25 is composed of an electric heating member that generates resistance by energization, like the bottom wall 12 and the side wall 13 of the glass melting furnace 11.
  • the upper partition plate 16 is particularly preferably composed of a platinum group metal, and is preferably composed of iridium (Ir) or an iridium-based alloy.
  • the thin film forming member 25 may be configured by coating the surface of a general furnace material such as brick with a platinum group metal such as iridium (Ir) and an iridium-based alloy.
  • the standing direction of the thin film forming member 25 configured as described above may be a direction perpendicular to the horizontal direction, and is a direction inclined from the direction perpendicular to the horizontal direction to the inlet 19 side. Also good. However, the molten glass that has passed from the upper passage portion 25a may be directed from the direction perpendicular to the horizontal direction to the inlet 19 side so as to be formed in a thin film shape while sliding down the thin film forming surface 25b. preferable.
  • the standing angle of the thin film forming member 25 is preferably 30 to 85 ° C. with respect to the horizontal direction, more preferably 35 to 80 ° C., and most preferably 40 to 70 ° C.
  • the upper end surface of the upper passage portion 25a is preferably formed in a curved surface with the thin film formation surface 25b side chamfered so as to smoothly guide the molten glass that has passed through the upper passage portion 25a to the thin film formation surface 25b.
  • the upper partition plate 16 and the thin film it is preferable to arrange the forming member 25 in parallel in the standing direction.
  • region B of the glass melting furnace 11 comprised in this way is heated by the resistance heat_generation
  • heating means such as a heater.
  • a drain 26 is formed on the bottom wall 12 of the first region A in the glass melting furnace 11 to draw out the molten glass blocked by the thin film forming member 25 when the glass type to be melted is switched.
  • the molten glass exceeding the thin film forming member 25 can be drawn out from the outlet 15, but the molten glass dammed up by the thin film forming member 25 is not melted unless the glass melting furnace 11 is turned over. It cannot be withdrawn from the furnace 11. Therefore, when the glass type to be melted is switched, the drain glass formed on the bottom wall 12 of the first region A is opened, so that the molten glass blocked by the thin film forming member 25 can be drawn out. .
  • the drain 26 can be opened and closed by various methods.
  • the drain 26 can be air-cooled or water-cooled to cure the molten glass in the drain 26, the drain 26 can be sealed, and the drain 26 is heated to melt the cured glass in the drain 26.
  • the drain 26 can be opened.
  • the drain 26 can be sealed by plugging the drain 26 using the lid member, and the drain 26 can be opened by removing the plug from the drain 26.
  • the casing 18 is placed on the floor 2, and is disposed above the glass melting furnace 11 in the vertical direction, and a ceiling wall 18 a serving as a ceiling of the casing 18, and the periphery of the glass melting furnace 11.
  • positioned below the vertical direction of the glass melting furnace 11 are formed in box shape.
  • an inlet 19 for feeding a glass material into the glass melting furnace 11 is formed above the first region A in the glass melting furnace 11 in the vertical direction.
  • a screw charger 20 is connected to the charging port 19 for supplying a glass raw material to be charged into the glass melting furnace 11.
  • An inert gas inlet 21 for introducing an inert gas into the casing 18 is formed in the side wall 18b.
  • An inert gas supply device 22 that supplies an inert gas to be introduced into the casing 18 is connected to the inert gas inlet 21.
  • the gas supplied from the inert gas supply device 22 may be any kind of inert gas, but is preferably a non-oxidizing gas in terms of preventing the oxidation of the molten glass, Nitrogen gas is most preferable because it can be stably supplied at a low cost.
  • a discharge port 23 for discharging the molten glass drawn out from the outlet 15 is formed below the outlet 15 of the glass melting furnace 11 in the vertical direction. Further, the discharge port 23 can discharge the inert gas simultaneously with the discharge of the molten glass.
  • the casing 18 thus configured may cover any shape and any material as long as it covers the entire glass melting furnace 11 and can ensure airtightness. However, mechanical properties, workability, price, heat resistance, and airtightness may be used. In view of the above, a metal container is preferable.
  • a heat insulating material such as a refractory brick or a heat-resistant board that keeps and insulates the glass melting furnace 11 is inserted.
  • a material whose innermost layer is not alloyed with iridium is disposed, and the outer layer is configured by appropriately combining an alumina heat resistant board and a heat resistant brick.
  • the floor hole 3 for introducing the molten glass drawn out from the outlet 15 of the glass melting furnace 11 into the fiberizing equipment 30 is formed in the floor 2.
  • the fiberizing facility 30 is a facility for fiberizing the molten glass drawn from the outlet 15 of the glass melting furnace 11.
  • This fiberizing equipment 30 includes a forehearth 31 into which the molten glass drawn from the outlet 15 is introduced, a bushing 32 for forming a large number of filaments from the molten glass in the forehearth 31, and a high speed by drawing the filament from the bushing 32.
  • a rotating drum 33 that winds up, an applicator 37 that applies a sizing agent to each filament drawn from the bushing 32, and a focusing roller 34 that focuses each filament.
  • the Fore Haas 31 is a storage tank in which the molten glass drawn out from the outlet 15 is introduced and the temperature of the molten glass is adjusted to adjust the viscosity of the molten glass to be easily fiberized.
  • the forehearth 31 is disposed below the floor hole 3 in the vertical direction, and is formed with an upper opening 35 into which the molten glass drawn from the outlet 15 is introduced.
  • the forehearth 31 is open to the atmosphere through the upper opening 35.
  • the forehearth 31 includes a heating means for adjusting the temperature of the molten glass.
  • This heating means may be, for example, an electric heater 36 suspended from the ceiling surface of the forehearth 31, and any heating means capable of adjusting the temperature of molten glass such as a gas burner in place of the electric heater 36. May be used.
  • the bushing 32 is provided at the bottom of the forehearth 31, and a large number (for example, about 100 to 4000) of nozzles (not shown) for spinning are formed.
  • the bushing 32 includes a heating means (not shown) for adjusting the temperature of the molten glass. This heating means is for generating resistance heat by energization. For this reason, the bushing 32 is formed of an electrothermal member that generates heat when energized, and is made of, for example, platinum or a platinum alloy.
  • FIG. 3 is a cross-sectional view showing the flow of molten glass in the glass melting furnace.
  • the bubbler 24 is omitted for convenience.
  • the inside of the casing 18 is evacuated or at least depressurized with a vacuum pump to remove oxygen present in the casing 18, and then supplied from the inert gas supply device 22.
  • the operation of introducing the active gas into the casing 18 from the inert gas inlet 21 is repeated several times until the oxygen concentration in the casing 18 is at least 1% or less, thereby making the inside of the casing 18 an inert gas atmosphere. Note that the gas filled in the casing 18 before the inert gas is introduced and the inert gas introduced into the casing 18 are discharged from the discharge port 23.
  • the glass raw material is supplied from the screw charger 20, the glass raw material is supplied from the charging port 19 to the first region A of the glass melting furnace 11, current is supplied from the power supply 14, and the glass melting furnace 11 is energized. . Then, the glass melting furnace 11 generates resistance heat, and the glass raw material put into the first region A is heated and melted. At this time, the molten glass is heated to 1700 to 2000 ° C. by resistance heating in the glass melting furnace 11 by energization. Thereby, the melting of the silica contained in the glass raw material is promoted, the glass raw material is rapidly melted, and the unmelted glass raw material is eliminated.
  • the forehearth 31 and the bushing 32 of the fiberizing equipment 30 are also heated, and the heating temperature of the forehearth 31 and the bushing 32 is appropriately adjusted so that the molten glass has a temperature at which fiber is easily formed according to the glass composition of the glass fiber to be manufactured Keep it.
  • the glass raw material thrown into the glass melting furnace 11 is adjusted, and the liquid level of the molten glass in the glass melting furnace 11 is made slightly higher than the upper passage part 25 a of the thin film forming member 25.
  • the liquid level of the molten glass in the glass melting furnace 11 is adjusted by adjusting the viscosity of the molten glass with the heating means provided in the second region B and adjusting the amount of the molten glass drawn from the outlet 15. It may be slightly higher than the upper passage portion 25a of the thin film forming member 25.
  • the molten glass melted in the first region A moves from the first region A to the second region B only from the passage port 16a of the upper partition plate 16 formed in the bottom of the furnace.
  • the flow path formed between the thin film forming member 25 is raised to the liquid level.
  • the unmelted material rides on the fast flow of the surface layer in the molten glass from the first region A to the second region B. It is blocked from moving.
  • the upper partition plate 16 and the thin film forming member 25 generate heat by energization from the power source 14, the molten glass flows through the flow path formed between the upper partition plate 16 and the thin film forming member 25.
  • the molten glass that reaches the liquid level and overflows from the thin film forming member 25 passes through the upper passage portion 25a of the thin film forming member 25 and is formed into a thin film shape along the thin film forming surface 25b of the thin film forming member 25. While sliding down. At this time, when the molten glass is made into a thin film, the bubbles cannot maintain their shape, so that the bubbles contained in the molten glass break up when they slide down along the thin film forming surface 25b. For this reason, the upper passage part 25a and the thin film forming surface 25b of the thin film forming member 25 function as a clarified part of the molten glass. Moreover, since the heat transfer efficiency of molten glass improves because molten glass is thinned by the thin film formation member 25, the heating of molten glass is accelerated
  • the high-temperature molten, clarified and homogenized molten glass in the glass melting furnace 11 is drawn out vertically from the outlet 15.
  • the molten glass drawn from the outlet 15 passes through the outlet 23 formed in the casing 18, the floor hole 3 formed in the floor 2, and the upper opening 35 formed in the forehearth 31 of the fiberizing facility 30. It is introduced into the forehearth 31, and is further drawn out as a glass filament from a number of nozzles of the bushing 32 provided at the bottom of the forehearth 31.
  • the glass filaments drawn out from a number of nozzles of the bushing 32 are coated with a sizing agent by an applicator 37 and wound by a rotating drum 33 that rotates at a high speed while focusing a number of glass filaments by a focusing roller 34. Glass fibers in which glass filaments are bundled are produced.
  • the molten glass melted by the resistance heat generation of the bottom wall 12 and the side wall 13 is Since the film is blocked by the thin film forming member 25, the liquid level of the molten glass is made slightly higher than the upper passage part 25a, and the molten glass that has passed through the upper passage part 25a is transmitted to the thin film formation surface 25b of the thin film formation member 25. By being lowered, the molten glass can be stretched and formed into a thin film. Thereby, since the bubbles contained in the molten glass can no longer hold the shape and break the bubbles, a very excellent clarification effect can be obtained.
  • the inside of the glass melting furnace 11 is heated to an extremely high temperature by the resistance heat generation of the bottom wall 12 and the side wall 13, and the heat transfer efficiency to the molten glass is increased by reducing the thickness of the molten glass. Melting of the melt is greatly promoted and homogenization of the molten glass is achieved.
  • the molten glass which passed the upper passage part 25a slides down on the thin film formation surface 25b without leaving
  • the molten glass is made into a thin film smoothly Can be formed.
  • the glass raw material put into the glass melting furnace 11 can be heated and melted by heat conduction and radiation from the bottom wall 12 and the side wall 13.
  • the molten glass can be heated throughout the furnace 11. For this reason, the glass raw material can be heated and melted even when there is no molten glass in the glass melting furnace 11 as in the case of heat-up, and since the outlet 15 itself generates resistance heat, no additional heating means is provided. Moreover, it can prevent that the temperature of the molten glass pulled out from the outlet 15 falls.
  • the heating efficiency of a glass raw material is high. Moreover, since the easiness of electricity flow can be changed by partially changing the plate thickness of the bottom wall 12 and the side wall 13, the temperature distribution of the glass melting furnace 11 can be changed. Moreover, since it is not necessary to put a separate heating member in the molten glass, it is possible to prevent impurities from being mixed into the molten glass.
  • the glass raw material can be melted at a high temperature equal to or higher than the melting point of silica by configuring the glass melting furnace 11 with iridium or an iridium-based alloy, the melting time of the glass raw material can be dramatically shortened. Moreover, since iridium does not generate silicon from molten glass even when it comes into contact with molten glass, silicon particles in the molten glass can be reduced and the quality of the molten glass can be improved.
  • the molten glass is heated to 1700-2000 ° C. by the resistance heat generation of the bottom wall 12 and the side wall 13, so that the melting time of the glass raw material is drastically shortened because it is melted by the single silica as the main component of the glass. be able to.
  • the inside of the casing 18 is made an inert gas atmosphere, so that the glass melting furnace 11 can be prevented from being oxidized and sublimated. For this reason, even if a molten glass is heated to high temperature, it can suppress that the lifetime of the glass melting apparatus 10 falls.
  • the upper partition plate 16 in the glass melting furnace 11, it is possible to prevent unmelted material from being drawn out from the outlet through the rapid flow of the surface layer of the molten glass, and to melt in the glass melting furnace 11.
  • the moving path of the glass can be extended. Thereby, since the residence time of the molten glass in the glass melting furnace 11 becomes long, defoaming is promoted and the clarification effect of the molten glass is enhanced, and the melting of the glass raw material is promoted to achieve homogenization of the molten glass. It is done. Further, since a flow path for flowing the molten glass upward is formed between the upper partition plate 16 and the thin film forming member 25, the bubbles contained in the molten glass are pushed upward to break at the liquid surface of the molten glass. Can be foamed. Thereby, the clarification effect of molten glass can further be improved.
  • the second embodiment is basically the same as the first embodiment, and only the shape of the thin film forming member is different. For this reason, in the following description, only the part which is different from the first embodiment will be described, and the description of the same part as the first embodiment will be omitted.
  • FIG. 4 is a plan view of a glass melting furnace in the glass fiber manufacturing apparatus according to the second embodiment.
  • FIG. 5 is a cross-sectional view of the glass melting furnace shown in FIG. 4 taken along the line VV.
  • the glass melting furnace 70 of the glass fiber manufacturing apparatus which concerns on 2nd Embodiment is provided with the thin film formation member 71 instead of the thin film formation member 25 of 1st Embodiment. Yes.
  • the thin film forming member 71 dams the molten glass melted in the first region A, and forms the overflowing molten glass in a thin film shape, and then the outlet 15 Is derived.
  • the thin film forming member 71 is formed in a circular tube shape surrounding the outlet 15, and is erected on the bottom wall 12 and is in contact with the bottom wall 12.
  • An upper passage portion 71 a through which the molten glass melted in the first region A passes is formed at the upper end portion of the thin film forming member 71.
  • the upper passage portion 71a may be formed by, for example, the upper end surface of the thin film forming member 71, or may be formed by a through hole or a notch formed in the thin film forming member 71.
  • the upper passage portion 71a is formed in a horizontal plane at a position slightly lower than the liquid surface of the molten glass in order to form the molten glass into a thin film having a uniform thickness.
  • a thin film forming surface 71b that is formed into a thin film shape is formed on the inner side of the thin film forming member 71 disposed on the outlet 15 side by lowering and extending the molten glass that has passed through the upper passage portion 71a.
  • the cross section of the thin film forming surface 71b is formed in a perfect circle, but may be formed in any shape such as an ellipse or a polygon as long as the molten glass can be formed in a thin film.
  • the thin film forming member 71 is made of a platinum group metal, similarly to the bottom wall 12 and the side wall 13 of the glass melting furnace 11, and is preferably made of iridium (Ir) or an iridium-based alloy.
  • the thin film forming member 71 may be configured by covering a surface of a general furnace material such as brick with a platinum group metal such as iridium (Ir) and an iridium-based alloy.
  • the thin film forming member 71 configured as described above may have the same horizontal cross-sectional shape from the upper end to the lower end, or may have different horizontal cross-sectional shapes. However, in the case of different horizontal cross-sectional shapes from the upper end to the lower end, the thin film forming surface 71b is such that the molten glass overflowing from the thin film forming member 71 slides down along the thin film forming surface 71b without leaving the thin film forming surface 71b.
  • the shape is preferably narrowed from the upper part in the vertical direction toward the lower part in the vertical direction. Specifically, it is preferable that the thin film forming surface 71b has a mortar shape, a funnel shape, a taper shape, or the like that narrows from the upper part in the vertical direction to the lower part in the vertical direction.
  • the upper end surface of the upper passage portion 71a is formed in a curved shape with the thin film formation surface 71b side chamfered so as to smoothly guide the molten glass that has passed through the upper passage portion 71a to the thin film formation surface 71b.
  • the molten glass in the glass melting furnace 11 when the liquid level of the molten glass in the glass melting furnace 11 is slightly higher than the upper passage portion 71a of the thin film forming member 71, the molten glass melted in the first region A. However, it moves from the 1st area
  • the molten glass overflowing from the thin film forming member 71 passes through the upper passage portion 71a of the thin film forming member 71 and slides down while being formed in a thin film shape along the thin film forming surface 71b of the thin film forming member 71.
  • the bubbles cannot retain their shape, so that the bubbles contained in the molten glass break up when sliding down the thin film forming surface 71b.
  • the upper passage part 71a and the thin film forming surface 71b of the thin film forming member 71 function as a clarified part of the molten glass.
  • the heat transfer efficiency of molten glass improves because molten glass is thinned by the thin film formation member 71, the heating of molten glass is accelerated
  • the tubular thin film forming member 71 surrounding the outlet 15
  • the molten glass melted by the resistance heat generation of the bottom wall 12 and the side wall 13 is caused by the thin film forming member 71. Since it is blocked, the liquid level of the molten glass is made slightly higher than that of the upper passage portion 71a, and the molten glass overflowing from the thin film forming member 71 is lowered to the thin film forming surface 71b, thereby extending the molten glass. Can be formed into a thin film. Thereby, since the bubbles contained in the molten glass can no longer hold the shape and break the bubbles, a very excellent clarification effect can be obtained.
  • the thin film forming member 25 may have any shape and structure as long as the molten glass can be dammed and lowered into a thin film shape, and may have the shape shown in FIGS.
  • FIG. 6 is a view showing another example of a plate-like thin film forming member, in which (a) and (b) are sectional views of the glass melting furnace, and (c) and (d) are plan views of the glass melting furnace. is there.
  • FIG. 7 is a view showing another example of a tubular thin film forming member, in which (a) is a cross-sectional view of a glass melting furnace, and (b) to (d) are plan views of the glass melting furnace. In FIGS. 6 and 7, the glass melting furnace is illustrated with components other than the thin film forming member omitted.
  • the plate-like thin film forming member 25A shown in FIG. 6A is formed in a curved surface curved in an arc shape in the horizontal direction.
  • the plate-shaped thin film forming member 25B shown in FIG. 6B is formed in a curved surface curved in a wave shape in the horizontal direction.
  • the plate-shaped thin film forming member 25C shown in FIG. 6C is formed in a curved surface curved in an arc shape in the vertical direction.
  • the thin film forming member 25D shown in FIG. 6D is formed in a curved surface that is curved in a wave shape (step shape) in the vertical direction.
  • the tubular thin film forming member 71A shown in FIG. 7A is formed in a rectangular ring shape, and the inner diameter of the outlet differs from the inner diameter of the thin film forming member.
  • the tubular thin film forming member 71B shown in FIG. 7B is formed in a tapered shape in which the thin film forming surface is narrowed from the upper part in the vertical direction toward the lower part in the vertical direction.
  • a tubular thin film forming member 71 ⁇ / b> C shown in FIG. 7C is formed in a mortar shape or funnel shape in which the thin film forming surface narrows in a curved manner from the upper part in the vertical direction toward the lower part in the vertical direction.
  • a tubular thin film forming member 71D shown in FIG. 7 (d) is formed in a two-stage mortar shape in which the thin film forming surface gradually narrows gradually from the upper part in the vertical direction toward the lower part in the vertical direction.
  • a thin film formation member can be easily manufactured by forming a thin film formation member in a rectangular ring shape. Further, as shown in FIG. 7 (a), by making the inner diameter of the outlet different from the inner diameter of the thin film forming member, there is no need to match the outlet and the thin film forming member with high accuracy. Can be easily manufactured. Further, as shown in FIGS. 7B to 7D, the molten glass overflowing from the thin film forming member is not separated from the thin film forming member by narrowing the thin film forming member downward in the vertical direction. Since the thin film forming surface of the thin film forming member slides down, the molten glass can be smoothly formed into a thin film. Further, as shown in FIG.
  • the thin film forming member can be easily manufactured by linearly constricting the thin film forming member.
  • the residence time of the molten glass on the thin film forming surface of the thin film forming member can be increased.
  • the clarification effect can be improved.
  • the residence time of the molten glass on the thin film forming surface of the thin film forming member can be further increased by gradually narrowing the thin film forming member.
  • the glass melting furnace 11 is described as being covered by the casing 18, but oxidation problems such as the glass melting furnace 11 can be tolerated, and it is not necessary to expose the glass melting furnace 11 to an inert gas atmosphere. In the case, it is not always necessary to cover the glass melting furnace 11 with the casing 18.
  • the molten glass pulled out from the outlet 15 like the glass fiber manufacturing apparatus 60 shown in FIG.
  • FIG. The vacuum degassing furnace 62 hermetically covers the furnace 63 into which the molten glass is introduced with a casing 64 and depressurizes the inside of the casing 64 with a vacuum pump 65, thereby removing the molten glass introduced into the furnace 63. It encourages bubbles.
  • the glass melting apparatus 10 is described as being applied to the glass fiber manufacturing apparatus 1, but it can be applied to various product manufacturing apparatuses such as a glass cullet manufacturing apparatus.
  • the outlet 15 is described as being formed in the bottom wall 12, but the outlet 15 is perpendicular to the liquid level of the molten glass passing through the upper passage portion 25 a of the thin film forming member 71. It may be formed at any position as long as it is below the direction. For example, it is formed at the joint between the bottom wall 12 and the side wall 13 (the corner portion formed by the bottom wall 12 and the side wall 13) or at the lower part of the side wall 13 (near the joint between the bottom wall 12 and the side wall 13). May be.
  • the present invention can be used as a glass melting apparatus for melting glass raw materials, a glass fiber manufacturing apparatus for manufacturing glass fibers using this glass melting apparatus, and a glass fiber manufacturing method.
  • SYMBOLS 1 Glass fiber manufacturing apparatus, 2 ... Floor, 3 ... Floor hole, 10 ... Glass melting apparatus, 11 ... Glass melting furnace, 12 ... Bottom wall, 13 ... Side wall, 13a ... Electrode part, 14 ... Power supply, 15 ... Outlet 16 ... Upper partition plate, 16a ... Passage port (lower passage part), 18 ... Casing, 18a ... Top wall, 18b ... Side wall, 18c ... Bottom wall, 19 ... Loading port, 20 ... Screw charger, 21 ... Inert gas Inlet port, 22 ... inert gas supply device, 23 ... discharge port, 24 ... bubbler, 25 (25A to 25D) ... thin film forming member, 25a ...

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

La présente invention concerne un dispositif de fusion de verre. Selon la présente invention, la clarification et l'homogénéisation du verre fondu sont réalisées efficacement lorsqu'une fusion à température élevée a été réalisée. Dans la présente invention, l'intérieur d'un four de fusion de verre (11), qui comprend une paroi latérale (13) et une paroi de fond (12) dans laquelle un élément chauffant électrique qui effectue un chauffage résistif par électrification est formé, une sortie de verre fondu (15) étant formée dans la paroi de fond (12), comprend : une plaque de séparation supérieure (16) qui permet le passage de verre fondu uniquement depuis le fond intérieur du four de fusion de verre (11) ; et un élément de formation d'un film mince (25) qui est disposé entre la plaque de séparation supérieure (16) et la sortie (15), retient le verre fondu, forme un passage avec la plaque de séparation supérieure (16) au travers duquel le verre fondu s'écoule du bas vers le haut, et sur lequel une surface de formation d'un film mince (25b) est formée, qui permet la chute du verre fondu qui déborde et la formation d'un film mince.
PCT/JP2012/067129 2011-07-15 2012-07-04 Dispositif de fusion de verre, dispositif de formation d'une fibre de verre et procédé de formation d'une fibre de verre Ceased WO2013011838A1 (fr)

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JP2013524654A JP5892166B2 (ja) 2011-07-15 2012-07-04 ガラス溶融装置、ガラス繊維製造装置及びガラス繊維製造方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015182940A (ja) * 2014-03-26 2015-10-22 日本電気硝子株式会社 ガラス溶融炉及び溶融ガラスの素地替え方法
JP2021091569A (ja) * 2019-12-09 2021-06-17 日本電気硝子株式会社 ガラス溶融装置、ガラス物品の製造方法、及び、容積調節部材

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113603337B (zh) * 2021-08-06 2023-03-17 中国建材国际工程集团有限公司 一种光伏压延玻璃熔窑及其溢流口结构

Citations (3)

* Cited by examiner, † Cited by third party
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
US20070220923A1 (en) * 2006-03-21 2007-09-27 Oakleaf Anthony P Melter flow guide for glass fiberizing system
WO2012086470A1 (fr) * 2010-12-21 2012-06-28 日東紡績株式会社 Four de fusion du verre, appareil de production de fibre du verre, et procédé de production de fibre du verre

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596827B2 (ja) * 1981-03-10 1984-02-14 日東紡績株式会社 再溶融式ガラス繊維製造用白金系紡糸炉
PL332381A1 (en) * 1997-07-22 1999-09-13 Saint Gobain Isover Glass-furnace and production plant incorporating same

Patent Citations (3)

* Cited by examiner, † Cited by third party
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
US20070220923A1 (en) * 2006-03-21 2007-09-27 Oakleaf Anthony P Melter flow guide for glass fiberizing system
WO2012086470A1 (fr) * 2010-12-21 2012-06-28 日東紡績株式会社 Four de fusion du verre, appareil de production de fibre du verre, et procédé de production de fibre du verre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015182940A (ja) * 2014-03-26 2015-10-22 日本電気硝子株式会社 ガラス溶融炉及び溶融ガラスの素地替え方法
JP2021091569A (ja) * 2019-12-09 2021-06-17 日本電気硝子株式会社 ガラス溶融装置、ガラス物品の製造方法、及び、容積調節部材
JP7392910B2 (ja) 2019-12-09 2023-12-06 日本電気硝子株式会社 ガラス溶融装置、ガラス物品の製造方法

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