JPH0431325A - Production of colored glass - Google Patents
Production of colored glassInfo
- Publication number
- JPH0431325A JPH0431325A JP13701190A JP13701190A JPH0431325A JP H0431325 A JPH0431325 A JP H0431325A JP 13701190 A JP13701190 A JP 13701190A JP 13701190 A JP13701190 A JP 13701190A JP H0431325 A JPH0431325 A JP H0431325A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- colorant
- molten glass
- stirring
- molten
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000003086 colorant Substances 0.000 claims abstract description 21
- 239000006060 molten glass Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000011437 continuous method Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000005356 container glass Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
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
- C03B5/173—Apparatus for changing the composition of the molten glass in glass furnaces, e.g. for colouring the molten glass
-
- 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
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は連続式タンク炉における均質な着色された溶融
ガラスの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing homogeneous colored molten glass in a continuous tank furnace.
［従来の技術］
従来、溶融びんガラスの色替において着色剤を溶解槽の
下流で分離投入する方法は知られている（ Ｇｌａｓｓ
Ｔｅｃｈｎｏｌｏｇｙ Ｖｏｌ、３０．９ （１９８
９））が、素地の均質性の上で問題があり、この均質性
欠点の解消を目的として機械的攪拌が行われている。し
かし、撹拌においては泡が発生するという点で問題があ
り、特にびんガラス素地以外の下流での撹拌は従来はと
んど行われていなかった。即ち、連続タンク炉において
着色剤を分離投入することによる均質な着色ガラスを製
造する望ましい方法は見い出されていなかった。[Prior Art] Conventionally, a method is known in which a coloring agent is separated and introduced downstream of a melting tank in order to change the color of molten bottle glass (Glass
Technology Vol, 30.9 (198
9)) However, there is a problem in the homogeneity of the base material, and mechanical stirring is carried out for the purpose of eliminating this homogeneity defect. However, stirring poses a problem in that bubbles are generated, and in particular, stirring downstream of materials other than bottle glass substrates has rarely been carried out in the past. That is, a desirable method for producing homogeneous colored glass by separately introducing a coloring agent in a continuous tank furnace has not been found.
［発明の解決しようとする問題点］
本発明の目的は着色剤を用いた着色ガラスの製法の従来
技術が有していた前述の欠点を解消しようとするもので
ある。[Problems to be Solved by the Invention] An object of the present invention is to overcome the above-mentioned drawbacks of the prior art methods of producing colored glass using colorants.
［問題点を解決するための手段］
本発明は、前述の問題点を解決すべくなされたものであ
り、連続的に溶融ガラスに着色剤を添加、撹拌し、次い
で減圧して脱泡を行うことを特徴とする連続的な着色ガ
ラスの製造方法を提供するものである。[Means for Solving the Problems] The present invention was made to solve the above-mentioned problems, and involves continuously adding a coloring agent to molten glass, stirring it, and then degassing it by reducing the pressure. The present invention provides a continuous method for manufacturing colored glass characterized by the following.
本発明における溶融ガラスとしては、加熱溶融法により
製造されるガラスであれば組成的には制約されない。例
えば通常の窓ガラスとして使用されるライムシリカ系ガ
ラス、容器ガラスとして使用されるホウケイ酸アルカリ
ガラスが例示される。The molten glass in the present invention is not limited in composition as long as it is glass manufactured by a heating melting method. Examples include lime silica glass used as ordinary window glass and borosilicate alkali glass used as container glass.
着色剤を添加する際の溶融ガラスの粘度としては１０’
ボイス以下が好ましい。粘度が１０３ボイスを越えると
着色剤が均一に混合され難くなるので好ましくない。The viscosity of molten glass when adding colorant is 10'
Voice or lower is preferable. If the viscosity exceeds 103 voices, it is not preferable because it becomes difficult to mix the colorant uniformly.
かかる溶融ガラスは目標組成となるように調整した原料
を連続的に溶融槽に投入し、加熱溶融することにより得
られる。Such molten glass is obtained by continuously charging raw materials adjusted to a target composition into a melting tank and heating and melting them.
かかる溶融ガラスに添加される着色剤としては、Ｔｉ
、Ｖ 、Ｃｒ 、Ｍｎ 、Ｆｅ 、Ｃｏ 、Ｎｉ 、Ｃ
ｕ 、Ｍｏ 、Ｃｅ等の金属イオンによるもの、元素状
セレンによるといわれる金属セレンが例示される。着色
剤の種類および添加量は、目標とするガラスの色調によ
り定まる。かかる着色剤は酸化物、金属状で添加しても
よいが、予め低融点フリットに混入した着色フリットと
して添加すると溶融ガラスと着色剤との均質化が容易で
あるので特に好ましい。As a coloring agent added to such molten glass, Ti
, V, Cr, Mn, Fe, Co, Ni, C
Examples include those based on metal ions such as u, Mo, Ce, etc., and metallic selenium said to be based on elemental selenium. The type and amount of the colorant to be added are determined by the desired color tone of the glass. Such a coloring agent may be added in the form of an oxide or metal, but it is particularly preferable to add it as a colored frit mixed in a low melting point frit in advance, since it is easy to homogenize the molten glass and the coloring agent.
かかる着色剤を添加した溶融ガラスを撹拌するに当って
は、白金、耐火物等の耐熱材料で構成された回転撹拌機
を溶融ガラス中に浸漬し撹拌機を回転する。この回転撹
拌機としては棒状の回転軸に攪拌羽根を設けた公知のタ
イプのものが例示される。この回転撹拌機の代りに櫛状
の往復運動をする撹拌機を使用することもできる。攪拌
機は溶融ガラスの流れ方向に対し複数個設けてもよく、
また着色剤を添加すると同時に撹拌を行ってもよい。When stirring the molten glass to which such a colorant has been added, a rotary stirrer made of a heat-resistant material such as platinum or a refractory is immersed in the molten glass and the stirrer is rotated. An example of this rotary stirrer is a known type in which stirring blades are provided on a rod-shaped rotating shaft. Instead of this rotary stirrer, a comb-like reciprocating stirrer can also be used. A plurality of stirrers may be provided in the flow direction of the molten glass,
Further, stirring may be performed at the same time as adding the colorant.
かかる撹拌を行うに当ってのガラスの粘度は１０２〜１
０３ボイズが好ましい。ガラスの粘度が１０２ボイスよ
り小さいと撹拌機の損耗が激しくなり、１０３ボイズよ
り大きいと溶融ガラスと着色剤とが均質になり難いので
いずれも好ましくない。着色剤が均質に混合された溶融
ガラスは減圧され脱泡される。かかる圧力としては０．
０５〜０．３ａｔｒ＋が好ましい。この圧力がが０．３
ａｔｍより高いと脱泡作用が低下するので好ましくなく
、反対に圧力が０．０５ ａｔｍより低いと装置が大型
化するのであずれも好ましくない。またこの減圧下に保
持する時間及びガラスの粘度は許容される残存既報の量
に依存する。例えば、０．１ケ／ｋｇの気泡が許容され
る場合はガラスの粘度１０２〜１０２５ボイスで０．５
〜２時間程度で充分にその目的を達成することができる
。The viscosity of the glass during such stirring is 102 to 1
03 boise is preferred. If the viscosity of the glass is less than 102 voices, the agitator will be severely worn out, and if it is greater than 103 voices, it will be difficult to make the molten glass and the colorant homogeneous, so both are unfavorable. The molten glass with the colorant homogeneously mixed therein is depressurized and defoamed. The pressure is 0.
05 to 0.3 atr+ is preferred. This pressure is 0.3
If the pressure is higher than 0.05 atm, the defoaming effect will be reduced, which is undesirable. On the other hand, if the pressure is lower than 0.05 atm, the size of the apparatus will increase, so both are unfavorable. Also, the time for holding under this reduced pressure and the viscosity of the glass depend on the amount of residual tolerable material. For example, if 0.1 bubbles/kg are allowed, 0.5
The purpose can be fully achieved in about 2 hours.
かくして脱泡されたガラスは所定温度に調整されフロー
トバス等に送られ連続的に成形される。The defoamed glass is adjusted to a predetermined temperature and sent to a float bath or the like where it is continuously shaped.
一方、得られるガラスの色調を替える素地替えの場合は
溶解槽の溶融ガラスはそのままにして着色剤を替えるこ
とにより、素地の色調を替えることができる。On the other hand, when changing the base material to change the color tone of the resulting glass, the color tone of the base material can be changed by changing the colorant while leaving the molten glass in the melting tank as it is.
［作用］
本発明において、撹拌は溶解槽の素地と着色剤を均一に
するように働く。減圧は撹拌室で発生した泡を急拡大さ
せ、浮上除去するように働く。[Function] In the present invention, stirring works to uniformize the colorant and the base material in the dissolution tank. The reduced pressure works to rapidly expand the bubbles generated in the stirring chamber and float them away.
［発明の効果］
本発明は色調を替える素地替の場合、原料、エネルギー
費の節約に優れた効果を有する。[Effects of the Invention] The present invention has an excellent effect in saving raw materials and energy costs when changing the substrate to change the color tone.
また均質な着色ガラスの製造に効果を有する。It is also effective in producing homogeneous colored glass.
更にガラス中の泡を減らす効果を有する。即ち、泡が少
なく、かつ均質な着色ガラスを連続式タンク炉において
色替えにともなう原料、エネルギー諸費の大きな節約の
もとに、連続タンク炉において製造することを可能とし
たもので、その工業上の価値は多大である。Furthermore, it has the effect of reducing bubbles in the glass. In other words, it has made it possible to produce homogeneous colored glass with few bubbles in a continuous tank furnace, while greatly saving raw materials and energy costs associated with color changes in a continuous tank furnace. is of great value.
Claims (1)
いで減圧して脱泡を行うことを特徴とする連続的な着色
ガラスの製造方法。(1) A continuous method for producing colored glass, characterized by continuously adding a coloring agent to molten glass, stirring it, and then defoaming by reducing the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137011A JP3032243B2 (en) | 1990-05-29 | 1990-05-29 | Production method of colored glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137011A JP3032243B2 (en) | 1990-05-29 | 1990-05-29 | Production method of colored glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0431325A true JPH0431325A (en) | 1992-02-03 |
| JP3032243B2 JP3032243B2 (en) | 2000-04-10 |
Family
ID=15188731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2137011A Expired - Fee Related JP3032243B2 (en) | 1990-05-29 | 1990-05-29 | Production method of colored glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3032243B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0759524A1 (en) | 1995-08-21 | 1997-02-26 | Asahi Glass Company Ltd. | Pipe with external insulation for feeding a molten substance at high temperature |
| EP0775671A1 (en) | 1995-11-21 | 1997-05-28 | Asahi Glass Company Ltd. | Method and apparatus for refining molten glass under reduced pressure |
| US6119484A (en) * | 1997-10-06 | 2000-09-19 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass |
| US6202445B1 (en) | 1998-02-27 | 2001-03-20 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass and method to rise vacuum degassing apparatus temperature |
| US6308534B1 (en) | 1998-06-19 | 2001-10-30 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass |
| US6318126B1 (en) | 1998-06-26 | 2001-11-20 | Asahi Glass Company Ltd. | Vacuum degassing method for molten glass |
| US6321572B1 (en) | 1998-06-10 | 2001-11-27 | Asahi Glass Company, Ltd. | Vacuum degassing apparatus for molten glass |
| US6334336B1 (en) | 1998-06-24 | 2002-01-01 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass and method for building it |
| WO2007094372A1 (en) * | 2006-02-14 | 2007-08-23 | Nippon Sheet Glass Company, Limited | Method for producing glass article and glass article |
-
1990
- 1990-05-29 JP JP2137011A patent/JP3032243B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0759524A1 (en) | 1995-08-21 | 1997-02-26 | Asahi Glass Company Ltd. | Pipe with external insulation for feeding a molten substance at high temperature |
| US5851258A (en) * | 1995-08-21 | 1998-12-22 | Asahi Glass Company Ltd. | Backup structure for a pipe for feeding a molten substance of high temperature |
| EP0775671A1 (en) | 1995-11-21 | 1997-05-28 | Asahi Glass Company Ltd. | Method and apparatus for refining molten glass under reduced pressure |
| US5849058A (en) * | 1995-11-21 | 1998-12-15 | Asahi Glass Company Ltd. | Refining method for molten glass and an apparatus for refining molten glass |
| US6119484A (en) * | 1997-10-06 | 2000-09-19 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass |
| US6202445B1 (en) | 1998-02-27 | 2001-03-20 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass and method to rise vacuum degassing apparatus temperature |
| US6321572B1 (en) | 1998-06-10 | 2001-11-27 | Asahi Glass Company, Ltd. | Vacuum degassing apparatus for molten glass |
| US6308534B1 (en) | 1998-06-19 | 2001-10-30 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass |
| US6334336B1 (en) | 1998-06-24 | 2002-01-01 | Asahi Glass Company Ltd. | Vacuum degassing apparatus for molten glass and method for building it |
| US6318126B1 (en) | 1998-06-26 | 2001-11-20 | Asahi Glass Company Ltd. | Vacuum degassing method for molten glass |
| WO2007094372A1 (en) * | 2006-02-14 | 2007-08-23 | Nippon Sheet Glass Company, Limited | Method for producing glass article and glass article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3032243B2 (en) | 2000-04-10 |
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