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1. WO2022075016 - GLASS MELTING DEVICE, GLASS PRODUCTION METHOD, AND MOLTEN GLASS BASE MATERIAL EXCHANGE METHOD

Publication Number WO/2022/075016
Publication Date 14.04.2022
International Application No. PCT/JP2021/033740
International Filing Date 14.09.2021
IPC
C03B 5/43 2006.1
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
42Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
43Use of materials for furnace walls, e.g. fire-bricks
F27B 14/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS, OVENS OR RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
14Crucible or pot furnaces; Tank furnaces
06heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
CPC
C03B 5/43
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
5Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
42Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
43Use of materials for furnace walls, e.g. fire-bricks
F27B 14/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
14Crucible or pot furnaces
06heated electrically, e.g. induction crucible furnaces with or without any other source of heat
Applicants
  • AGC株式会社 AGC INC. [JP]/[JP]
Inventors
  • 赤木 亮介 AKAGI, Ryosuke
  • 松山 俊明 MATSUYAMA, Toshiaki
  • 藤崎 和幸 FUJISAKI, Kazuyuki
Agents
  • 伊東 忠重 ITOH, Tadashige
  • 伊東 忠彦 ITOH, Tadahiko
Priority Data
2020-17075608.10.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) GLASS MELTING DEVICE, GLASS PRODUCTION METHOD, AND MOLTEN GLASS BASE MATERIAL EXCHANGE METHOD
(FR) DISPOSITIF DE FUSION DU VERRE, PROCÉDÉ DE PRODUCTION DE VERRE ET PROCÉDÉ DE REMPLACEMENT DE MATÉRIAU DE BASE DE VERRE FONDU
(JA) ガラス溶解装置、ガラスの製造方法、及び溶融ガラスの素地替え方法
Abstract
(EN) This glass melting device comprises: a melt tank for accumulating molten glass; an electrode traversing a through-hole in the bottom wall of the melt tank, protruding above the bottom wall, and electrically heating the molten glass; and a cooler surrounding the electrode in the through-hole of the bottom wall. The bottom wall of the melt tank includes a first brick forming a surface layer in contact with the molten glass, and a second brick surrounding the electrode and the cooler in the through-hole of the surface layer. The first brick is superior in corrosion resistance to the second brick. The second brick is such that no reversible transformation occurs in the temperature region of 1000°C to 1200°C.
(FR) Ce dispositif de fusion du verre comprend : un réservoir de fusion pour l'accumulation du verre fondu ; une électrode traversant un trou débouchant dans la paroi inférieure du réservoir de fusion, faisant saillie au-dessus de la paroi inférieure, et chauffant électriquement le verre fondu ; et un refroidisseur entourant l'électrode dans le trou débouchant de la paroi inférieure. La paroi inférieure du réservoir de fusion comprend une première brique formant une couche superficielle en contact avec le verre fondu, et une seconde brique entourant l'électrode et le refroidisseur dans le trou débouchant de la couche superficielle. La première brique présente une résistance à la corrosion supérieure à celle de la seconde brique. La seconde brique est telle qu'aucune transformation réversible ne se produit dans la région de température de 1000 °C à 1200° C.
(JA) ガラス溶解装置は、溶融ガラスを溜める溶解槽と、前記溶解槽の底壁の貫通穴を通り、前記底壁の上方に突出し、前記溶融ガラスを通電加熱する電極と、前記底壁の前記貫通穴にて前記電極を囲む冷却器と、を備える。前記溶解槽の前記底壁は、前記溶融ガラスに接触する表層を形成する第1レンガと、前記表層の前記貫通穴にて前記電極と前記冷却器を囲む第2レンガとを含む。前記第1レンガは、前記第2レンガよりも耐食性に優れる。前記第2レンガは、1000℃~1200℃の温度域において、可逆的な変態が生じない。
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