JPS606901B2 - Glass manufacturing method that preheats raw materials - Google Patents
Glass manufacturing method that preheats raw materialsInfo
- Publication number
- JPS606901B2 JPS606901B2 JP52097231A JP9723177A JPS606901B2 JP S606901 B2 JPS606901 B2 JP S606901B2 JP 52097231 A JP52097231 A JP 52097231A JP 9723177 A JP9723177 A JP 9723177A JP S606901 B2 JPS606901 B2 JP S606901B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- batch
- melting furnace
- reducing agent
- furnace
- 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.)
- Expired
Links
- 239000011521 glass Substances 0.000 title claims description 46
- 239000002994 raw material Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000002844 melting Methods 0.000 claims description 27
- 230000008018 melting Effects 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 239000011593 sulfur Substances 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 1
- 239000008395 clarifying agent Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 239000006066 glass batch Substances 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 239000006025 fining agent Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 239000012856 weighed raw material Substances 0.000 description 1
Classifications
-
- 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
- C03B3/023—Preheating
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Description
【発明の詳細な説明】
本発明は、ガラスの製造方法に関し、更に詳しくは、ガ
ラス原料（ガラスバッチ）を溶解炉に投入する前に、予
め加熱した後、ガラス溶解炉に投入してガラスを製造す
る方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing glass, and more specifically, the present invention relates to a method for producing glass, and more specifically, before introducing a glass raw material (glass batch) into a melting furnace, it is heated in advance and then introduced into the glass melting furnace to form glass. Relating to a method of manufacturing.
近時、ガラス製造時に於けるエネルギーコストをさげる
目的で、ガラスバッチをガラス溶解炉廃熱等を利用して
予め加熱した後、ガラス溶解炉に投入してガラスを製造
する方法が提案されている。Recently, in order to reduce energy costs during glass manufacturing, a method has been proposed in which a batch of glass is preheated using waste heat from a glass melting furnace and then put into a glass melting furnace to manufacture glass. .
かかる方法を実施する場合技術的に解決しなければなら
ない問題として次のような問題がある。最も大量に生産
され、使用されているソーダ石灰ガラスは、溶融促進剤
および清澄剤として、硫酸塩および／又は亜硫酸塩を用
いたガラスバッチから製造されるが、その際清澄効果を
一層増すために還元剤としてガラスバッチ中に炭素を加
えるのが普通である。When implementing such a method, there are the following technical problems that must be solved. The most widely produced and used soda-lime glasses are manufactured from glass batches using sulfates and/or sulfites as melt accelerators and fining agents, with the addition of sulfates to further increase the fining effect. It is common to add carbon into the glass batch as a reducing agent.
しかし、炭素は加熱されると直ちに酸化される。However, carbon quickly oxidizes when heated.
従って炭素を含むガラスバッチを溶解炉に投入する前に
加熱すると、炭素の大部分は酸化されて、ガラス溶解炉
に投入された時点では、還元剤としての本来の役割を果
しえない。しかも、ガラスバッチに加える、清澄剤、還
元剤は極微量であり、その添加量の制御が、ガラスの品
質、生産量に与える影響は極めて大きい。Therefore, if a glass batch containing carbon is heated before it is introduced into a melting furnace, most of the carbon will be oxidized and cannot play its original role as a reducing agent once it is introduced into the glass melting furnace. Moreover, the amount of fining agent and reducing agent added to the glass batch is extremely small, and controlling the amount added has an extremely large effect on the quality and production amount of glass.
かかる状態を考えると、加熱によって容易に酸化される
炭素を含むガラスバッチを子熱してから、ガラス溶解炉
へ投入することは、実質上不可能である。本発明は、還
元剤として炭素の代りに硫化物硫黄および／又は硫黄を
用いることによって、上述の問題を解決したものである
。Considering this situation, it is virtually impossible to heat a glass batch containing carbon that is easily oxidized by heating and then introduce it into a glass melting furnace. The present invention solves the above problems by using sulphide sulfur and/or sulfur instead of carbon as the reducing agent.
本発明によれば、還元剤として、硫化物硫黄および／又
は硫黄を用いるので、ガラスバッチを予め加熱する工程
において、炭素を用いた場合に比較して、還元剤が酸化
されにくく、希望する温度に迄ガラスバッチを予め加熱
することができる。According to the present invention, since sulfide sulfur and/or sulfur is used as the reducing agent, the reducing agent is less likely to be oxidized than when carbon is used in the step of preheating the glass batch, and the temperature can be set at the desired temperature. The glass batch can be preheated up to .
本発明を実施するに当り、硫化物硫黄はそれ自体をガラ
ス原料中に添加することでもよいが、硫化物硫黄を含む
ガラスを粉末状にしてガラスバッチに加えると、このバ
ッチを子熱する工程において、硫化物硫黄の酸化は袷ん
ど認められず、通常の常温バッチをガラス溶解炉に投入
するのと何らかわりない操業をすることができるので好
ましい。特に、硫化物硫黄が含まれており、しかも安価
に入手できるガラスとして製鉄において高炉あるし・は
転炉から排出される錫樺があるので、これを利用するこ
とが推奨される。次に本発明の効果について述べる。In carrying out the present invention, the sulfide sulfur itself may be added to the glass raw material, but if the glass containing the sulfide sulfur is powdered and added to the glass batch, the process of heating the batch In this method, oxidation of sulfide sulfur is hardly observed and the operation can be carried out in the same manner as when a normal temperature batch is put into a glass melting furnace, which is preferable. In particular, it is recommended to use tin birch, which is discharged from blast furnaces or converters in iron manufacturing, as a glass that contains sulfide sulfur and is available at low cost. Next, the effects of the present invention will be described.
清澄剤として三硝（Ｎａ２Ｓ０４）、還元剤として炭素
を含む通常のガラスバッチを高温で予熱した後溶解炉で
溶解し、得られたガラスの単位重量当りの泡数を測定し
たところ、同一組成のバッチを予熱することなく同一条
件で溶解して製造したガラスに比較して泡数は約１００
倍であった。A normal glass batch containing trinitrile (Na2S04) as a fining agent and carbon as a reducing agent was preheated at high temperature and then melted in a melting furnace, and the number of bubbles per unit weight of the resulting glass was measured. The number of bubbles is approximately 100 compared to glass manufactured by melting the batch under the same conditions without preheating.
It was double that.
このことは、還元剤としての炭素が、ガラス溶解炉に投
入される前に、加熱炉での加熱によって酸化されて還元
剤の作用を果たさなかったことを意味する。次に「清澄
剤として若硝勺還元剤として硫化物硫黄を含む鉱律を用
いてガラスバッチを上記と同様の条件で子熱した後溶解
し、得られたガラスの泡数を計数したところ、子熱せず
に溶解製造したガラスとほぼ同数であった。このことは
本発明によれば〜従来と同様の品質のガラスを、ガラス
溶解炉の廃熱を利用して、ガラスバッチを子熱投入して
得られることを示している。This means that the carbon as a reducing agent was oxidized by heating in the heating furnace before being introduced into the glass melting furnace and did not function as a reducing agent. Next, a glass batch was heated under the same conditions as above using a mineral formula containing sulfide sulfur as a fining agent and a reducing agent, and then melted, and the number of bubbles in the resulting glass was counted. According to the present invention, glass of the same quality as before can be produced by melting glass batches using waste heat from a glass melting furnace. This shows what can be obtained by doing this.
以上述べたように、本発明によれば、
ガラス熔解炉の廃熱を利用してガラスバッチを子熱投入
することにより、省エネルギーをはかりつつ、従釆と同
機の品質のガラスが得られ、その経済的効果は著しい。As described above, according to the present invention, by using the waste heat of the glass melting furnace to heat the glass batch, it is possible to save energy while producing glass of the same quality as that of the secondary furnace. The economic effects are significant.
なお、本発明において、還元剤としての硫化物硫黄およ
び／または硫黄が添加されたガラスバッチは、微粉状の
まま子熱する以外に、子熱に先立ち適当な結合剤を用い
て造粒し、粒状状態にして子熱した後熔解炉に投入する
ようにすれば子熱炉および溶解炉内での原料飛散が防止
され好ましい。次に本発明を実施する装置について図示
した１例につき説明する。In addition, in the present invention, the glass batch to which sulfide sulfur and/or sulfur is added as a reducing agent is not only heated in a fine powder form but also granulated using a suitable binder prior to heating. It is preferable to granulate the material and heat it before charging it into the melting furnace, since this prevents the raw material from scattering in the heating furnace and the melting furnace. Next, an illustrated example of an apparatus for carrying out the present invention will be described.
図の１，２，３，４はガラスバッチの各種原料サイロで
あり、清澄剤、還元剤もこれらサイロに入っている。1, 2, 3, and 4 in the figure are silos for various raw materials for glass batches, and clarifiers and reducing agents are also contained in these silos.
サイロの下には５，６，７，８の秤量機が設置され、こ
れによって秤量された原料はコンベヤー９によって、混
合機１０１こ供給される。混合機１川こよって混合され
たガラスバッチは、コンベヤ−１１によってガラスバッ
チのサイロ１２に供給される。原料の秤量からガラスバ
ッチのサイロ１２に供給される迄の工程は間欠的に行な
われている。バッチサイロ１２から、バッチは連続定量
供給装置１３によって、連続、定量的にガラスバッチを
予熱する加熱炉１４‘こ送られる。Weighing machines 5, 6, 7, and 8 are installed under the silo, and the weighed raw materials are supplied to a mixer 101 by a conveyor 9. The glass batch mixed by the mixer 1 is supplied to a glass batch silo 12 by a conveyor 11. The process from weighing the raw materials to supplying the glass batch to the silo 12 is performed intermittently. From the batch silo 12, the batch is conveyed by a continuous metering feeder 13 to a heating furnace 14' which continuously and quantitatively preheats the glass batch.
加熱炉１４の型式については特定するものではないが、
粉体の加熱に用いられている通常の浮遊式熱交宅製機、
カスケード型熱交換機などを用いることができる。加熱
炉暫４からでてきたガラスバッチは連続定量供給装置１
５によってガラス溶解炉１８へ投入されるがト連続定量
供給装置１５は、溶解炉９８のガラス表面のレベル計と
連動し、ガラスの引上量によって「バッチの供給量が制
御される。更に加熱炉１４には、溶解炉１８から導管１
６を通して高温廃ガスが送り込まれており、廃ガスは加
熱炉１４中でガラスバッチと熱交換したあと、導管１７
を通り煙突から排ガスとして放出される。Although the type of heating furnace 14 is not specified,
A normal floating heat exchanger used for heating powder,
A cascade type heat exchanger or the like can be used. The glass batch coming out of heating furnace 4 is transferred to continuous quantitative feeder 1
The glass is fed into the glass melting furnace 18 by the glass melting furnace 98 by the glass melting furnace 98.The continuous quantitative supply device 15 is linked with a level meter on the glass surface of the melting furnace 98, and the batch supply amount is controlled by the amount of glass pulled up. A conduit 1 is connected to the furnace 14 from the melting furnace 18.
High-temperature waste gas is sent through conduit 17 after exchanging heat with the glass batch in heating furnace 14.
It passes through the chimney and is released as exhaust gas.
加熱炉１４‘こ送り込まれる排ガスはｔ溶解炉１８から
直接導びくこともできるが、又蓄熱室を有するガラス溶
解炉にあっては、蓄熱室で熱交換された後の低温排ガス
を導くこともでき、各々の廃ガスの温度に対応する省エ
ネルギー効果をもたらす。更に低温廃ガスによるバッチ
の加熱のみでは〜所望の温度にガラスバッチを加熱する
ことができない場合は、加熱炉１４１こ別に燃焼させた
高温ガスを送り込むことも可能であるが、いづれにして
も「少くともガラス溶解炉１８の廃ガスの一部を、加熱
炉１４の熱源として用いる方が、省エネルギー上得策で
ある。The exhaust gas fed into the heating furnace 14' can be directly led from the melting furnace 18, but in the case of a glass melting furnace that has a heat storage chamber, the low temperature exhaust gas that has been heat exchanged in the heat storage chamber can also be led. This results in an energy-saving effect that corresponds to the temperature of each waste gas. Furthermore, if it is not possible to heat the glass batch to the desired temperature by heating the batch only with low-temperature waste gas, it is possible to feed the high-temperature gas that has been combusted separately into the heating furnace 141, but in any case, It is better to use at least a part of the waste gas from the glass melting furnace 18 as a heat source for the heating furnace 14 in terms of energy conservation.
加熱炉について更に云えば「ガラスバッチの原料は一般
に徴粉であるから、バッチの一部が導管１７を通って大
気中に放出される恐れもある。Regarding the heating furnace, ``Since the raw material for the glass batch is generally powder, there is a possibility that a portion of the batch may be released into the atmosphere through the conduit 17.
かかる時は導管１７の先に、例えばサイクロン型集塵機
を設けて、排ガス中の徴粉を集めて、再び加熱炉１４へ
戻してやることが必要となる。これは単に大気汚染の防
止の意味だけでははく「ガラスバッチに含まれる特定の
原料が飛散してガラス組成がかたよることは防止するこ
とになる。In such a case, it is necessary to install, for example, a cyclone type dust collector at the end of the conduit 17 to collect the particles in the exhaust gas and return it to the heating furnace 14. This is not only meant to prevent air pollution, but also to prevent the glass composition from becoming unbalanced due to scattering of certain raw materials contained in the glass batch.
第１図は、本発明を実施する装置の１例を示す工程図で
ある。
１，２，３，４・・・ガラス原料サイロ、５，６，７７
８…秤量機、９，１１…コンベヤー、１０・・・混合機
、１２・・・バッチホッパー、１３，１５…連続定量供
給装置、ｉ４・・・原料加熱炉、１６，翼７…廃ガス導
管、１８・・・ガラス溶解炉。
オー図FIG. 1 is a process diagram showing an example of an apparatus for implementing the present invention. 1, 2, 3, 4... Glass raw material silo, 5, 6, 77
8... Weighing machine, 9, 11... Conveyor, 10... Mixer, 12... Batch hopper, 13, 15... Continuous quantitative supply device, i4... Raw material heating furnace, 16, Wing 7... Waste gas conduit , 18...Glass melting furnace. O diagram
Claims (1)
且つ還元剤が添加されたガラス原料を、ガラス溶解炉に
投入するに先立ち該溶解炉とは独立した加熱炉で予熱す
るガラス製造方法において、前記還元剤として硫化物硫
黄および／または硫黄を用いることを特徴とするガラス
製造方法。 ２ 硫化物硫黄を含むガラス粉末をガラス原料中に添加
することを特徴とする特許請求の範囲第１項記載の方法
。 ３ 硫化物硫黄を含む鉱滓をガラス原料中に添加するこ
とを特徴とする特許請求の範囲第１項記載の方法。[Scope of Claims] 1. Prior to charging a glass raw material containing sulfate and/or sulfite as a clarifying agent and a reducing agent to it into a glass melting furnace, it is preheated in a heating furnace independent of the melting furnace. A method for manufacturing glass, characterized in that sulfide sulfur and/or sulfur is used as the reducing agent. 2. The method according to claim 1, characterized in that glass powder containing sulfide sulfur is added to the glass raw material. 3. The method according to claim 1, characterized in that slag containing sulfide sulfur is added to the glass raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52097231A JPS606901B2 (en) | 1977-08-12 | 1977-08-12 | Glass manufacturing method that preheats raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52097231A JPS606901B2 (en) | 1977-08-12 | 1977-08-12 | Glass manufacturing method that preheats raw materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5431416A JPS5431416A (en) | 1979-03-08 |
| JPS606901B2 true JPS606901B2 (en) | 1985-02-21 |
Family
ID=14186840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52097231A Expired JPS606901B2 (en) | 1977-08-12 | 1977-08-12 | Glass manufacturing method that preheats raw materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606901B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122603U (en) * | 1984-01-30 | 1985-08-19 | 川崎重工業株式会社 | Fluidized bed heat exchanger tube of fluidized bed boiler |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT379123B (en) * | 1983-06-21 | 1985-11-25 | Siegfried Harcuba | METHOD FOR PRODUCING GLASS FOR THE PRODUCTION OF GLASS PRODUCTS AND DEVICE FOR CARRYING OUT THIS METHOD |
| WO2008053110A2 (en) * | 2006-10-27 | 2008-05-08 | Eurokera S.N.C. | Method for refining a lithium alumino-silicate glass and glass ceramic thus obtained |
| FR2907776B1 (en) * | 2006-10-27 | 2009-02-06 | Snc Eurokera Soc En Nom Collec | BLUE BETA-QUARTZ GLAZE, ARTICLES LOW VITROCERAMIC; MANUFACTURING PROCESS |
| JP6724896B2 (en) * | 2017-12-28 | 2020-07-15 | 日本電気硝子株式会社 | Glass manufacturing method |
-
1977
- 1977-08-12 JP JP52097231A patent/JPS606901B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122603U (en) * | 1984-01-30 | 1985-08-19 | 川崎重工業株式会社 | Fluidized bed heat exchanger tube of fluidized bed boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5431416A (en) | 1979-03-08 |
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