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Method of bubbling a gas into a glass melt

A glass melt and gas technology, which is used in mixing and clarifying molten glass to introduce gas into glass melt, clarifying glass with high melting temperature or high strain point, and can solve problems such as limited time

Inactive Publication Date: 2011-05-25
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, clarifiers are generally shallow, and the bubbles released by the bubbler have a limited time to stay in the molten glass and perform the specific tasks assigned to them

Method used

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  • Method of bubbling a gas into a glass melt
  • Method of bubbling a gas into a glass melt
  • Method of bubbling a gas into a glass melt

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Embodiment Construction

[0023] In the following detailed description, for purposes of explanation and not limitation, example embodiments disclosing specific details are given in order to provide a thorough understanding of the present invention. However, it will be readily apparent to one of ordinary skill in the art, having the benefit of the invention, that the invention may be practiced in embodiments that do not include the specific details described herein. Furthermore, descriptions of well-known devices, methods and materials may be omitted herein so as not to obscure the description of the present invention. Finally, where applicable, the same reference numbers refer to the same objects.

[0024]In a typical glassmaking process, raw feed materials are heated in a furnace (melter) to form a goo, or glass melt. Furnaces are generally made of refractory blocks composed of cooked flint, sillimanite, zircon or other refractory (high temperature) materials. Although small furnaces may be formed f...

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Abstract

Feed materials are melted in a furnace to form a glass melt in a first vessel, transferred through a first refractory metal connecting tube to a second vessel for conditioning, then transferred through a second refractory metal connecting tube to a third vessel where the glass melt is fined. A gas is bubbled into the glass melt through an injection tube disposed in the first connecting tube, optionally in the second connecting tube, and optionally in both connecting tubes. The gas may be used to mix the melt and / or recharge a fining agent with oxygen.

Description

technical field [0001] This invention relates to methods of forming molten glass, and more particularly to methods of introducing gases into a glass melt for the purpose of mixing and refining the molten glass. The present invention is particularly suitable for refining glass with high melting temperature or high strain point, such as glass used for glass substrates of flat panel displays. Background technique [0002] A liquid crystal display (LCD) is a flat panel display comprising a flat glass substrate or plate. The fusion method is the preferred technology for the production of glass sheets used in LCDs because the surface of the glass sheet produced by the fusion method has superior flatness and smoothness compared with glass sheets produced by other methods, and does not require subsequent polishing treatment. Melting methods are described, for example, in US Patent Nos. 3,338,696 and 3,682,609, the contents of which are incorporated herein by reference. [0003] Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/18C03B5/225
CPCC03B5/193C03B5/18C03B5/225
Inventor W·W·约翰逊
Owner CORNING INC