Method and apparatus for homogenizing a glass melt

一种玻璃液、搅拌装置的技术，应用在玻璃炉设备、玻璃制造设备、制造工具等方向

Active Publication Date: 2012-03-14
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method makes it difficult to control the temperature of the free surface of the glass, for example by heating the chamber lid above the glass
Furthermore, the junction between the hood and the agitator shaft can be an additional source of condensate impurities

Method used

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  • Method and apparatus for homogenizing a glass melt
  • Method and apparatus for homogenizing a glass melt
  • Method and apparatus for homogenizing a glass melt

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 An exemplary apparatus for carrying out a method of homogenizing a glass melt according to an embodiment of the present invention is shown. figure 1 The stirring device 10 comprises a stirring vessel 12, a stirring vessel cover 14 and a stirrer 16.

[0021] Stirring vessel 12 is preferably cylindrical in shape and generally vertically oriented, although the stirring vessel may have other shapes and orientations as desired. Preferably, the stirred vessel includes an inner surface 18 comprising platinum or a platinum alloy. Other materials having high temperature resistance, including corrosion resistance, and electrical conductivity may alternatively be used. For example, suitable metals for forming inner surface 18 may include other platinum group metals such as rhodium, iridium, palladium, ruthenium, osmium, and alloys thereof. The stirred vessel 12 includes a molten glass inlet pipe 20 located at or near the top of the stirred vessel 12 and a molten glass ...

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Abstract

The present invention is directed toward a method of reducing contamination of a glass melt in a stirring apparatus by an oxide material. The oxide material, such as platinum oxide, may be volatilized by the high temperature of the glass melt, and then condense on the inside surfaces of a stirring vessel, particularly the stirrer shaft and surrounding surfaces of the stirring vessel cover. A build-up of condensed oxide material may then be dislodged and fall back into the glass melt. Accordingly, an apparatus and method is provided that includes a heating element disposed adjacent an annular gap between the stirring vessel cover and the stirrer shaft. The heating element heats a surface of the stirring vessel cover bounding the annular gap and prevents condensation of volatile oxides that may flow through the annular gap.

Description

[0001] Claiming the benefit of an earlier-filed U.S. application [0002] This application claims the benefit of priority to US Application Serial No. 12 / 861,313, filed August 23, 2010. The contents of this US application, as well as publications, patents and patent documents mentioned herein are incorporated by reference in their entirety. technical field [0003] The present invention relates generally to a method for reducing impurities in a glass melt, and more particularly to reducing impurities formed by condensation during glass stirring. Background technique [0004] Chemical uniformity and thermal uniformity are a critical part of a good glass forming process. The function of the glass melting process is usually to produce a glass with acceptable levels of gas inclusions or solid inclusions, but the glass usually has linear cords (or striae or defects) that are chemically out of phase (ream)). These inhomogeneous compositions of glass are caused by various common...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/187
CPCC03B5/16C03B5/187C03B5/435C03B5/18C03B5/183C03B5/235
Inventor H·金D·A·诺莱特
Owner CORNING INC
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