High temperature glass melting vessel

Patent metadata

Field	Value
Publication number	US-11028001-B2
Application number	US-201716348142-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Nov 8, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A glass melt delivery system vessel has at least one sidewall and floor made of a refractory material, such as zirconia, and at least one electrode extending through the refractory material. The at least one electrode is configured to heat a glass melt in contact with the refractory material at an average temperature of at least about 1600 C° without exceeding a breakdown condition of the refractory material in contact with the glass melt.

First claim

What is claimed is:

1. A glass melt delivery system vessel comprising:
at least one sidewall and floor, wherein the at least one sidewall and floor comprise a refractory material;
at least one electrode extending through the refractory material;
wherein the at least one electrode is configured to heat a glass melt in contact with the refractory material at an average temperature of at least about 1600° C. without exceeding a breakdown condition of the refractory material in contact with the glass melt;
wherein the melting vessel has a length and a width and the ratio of the length to the width ranges from about 2.4:1 to about 3.6:1 and wherein the melting vessel is configured to accept a glass melt having a depth of at least about 50% of the width of the melting vessel.

2. The glass melt delivery system vessel of claim 1 , wherein the refractory material comprises zirconia.

3. The glass melt delivery system vessel of claim 1 , wherein the vessel is configured to heat the glass melt in contact with the refractory material to an average temperature of at least about 1600° C. for a period of at least about 5,000 hours.

4. The glass melt delivery system vessel of claim 1 , wherein the melting vessel is configured to accept the glass melt having the depth of at least about 70% of the width of the melting vessel.

5. The glass melt delivery system vessel of claim 1 , wherein the melting vessel comprises two opposing sidewalls, each opposing sidewall comprising at least two electrodes extending there through, wherein the ratio of the closest distance between electrodes and a width of the electrodes in the lengthwise direction of the sidewall ranges from about 0.8:1 to about 2.4:1.

6. The glass melt delivery system vessel of claim 1 , wherein a volume of the glass melt in the vessel (V) and a vertical distance (Y) between the floor and the bottom of the at least one electrode satisfies the relationship (V)/(Y) 3 <60,000.

7. The glass melt delivery system vessel of claim 1 , wherein the at least one electrode comprises an elongated body that extends a predetermined distance into an interior chamber of the melting vessel.

8. The glass melt delivery system vessel of claim 7 , wherein the at least one electrode extends at an angle ranging from about 0 degrees to about 75 degrees relative to a plane parallel to the floor.

9. The glass melt delivery system vessel of claim 7 , wherein the melting vessel comprises at least one electrode comprising an elongated body that extends a predetermined distance into the interior chamber of the melting vessel from a position on the floor that is a predetermined distance away from the at least one sidewall.

10. The glass melt delivery system vessel of claim 1 , wherein the at least one electrode comprises at least one material selected from the group consisting of tin, molybdenum, platinum, and alloys and oxides of the same.

11. A method of making a glass article, the method comprising processing a glass composition in a glass melt delivery system vessel, the glass melt delivery system vessel comprising:
at least one sidewall and floor, wherein the at least one sidewall and floor comprise a refractory material;
at least one electrode extending through the refractory material;
wherein the at least one electrode heats a glass melt in contact with the refractory material at an average temperature of at least about 1600° C. without exceeding a breakdown condition of the refractory material in contact with the glass melt;
wherein the melting vessel comprises two opposing sidewalls, each opposing sidewall comprising at least two electrodes extending therethrough, wherein the ratio of the closest distance between the electrodes and a width of the electrodes in the lengthwise direction of the sidewall ranges from about 0.8:1 to about 2.4:1, and wherein a vertical distance between the floor and a bottom of one of the electrodes is at least about 5% of a length of the electrode in a vertical direction.

12. The method of claim 11 , wherein the refractory material comprises zirconia.

13. The method of claim 11 , wherein the glass melt in contact with the refractory material is heated to an average temperature of at least about 1600° C. for a period of at least about 5,000 hours.

14. The method of claim 11 , wherein the melting vessel has a length and a width and the ratio of the length to the width ranges from about 2.4:1 to about 3.6:1.

15. The method of claim 14 , wherein the glass melt has a depth of at least about 50% of the width of the melting vessel.

16. The method of claim 14 , wherein each opposing sidewall comprises N electrodes that each comprise a width of A such that N times A is from about 30% to about 50% of the length of the melting vessel.

17. The method of claim 11 , wherein a volume of the glass melt in the vessel (V) and a vertical distance (Y) between the floor and the bottom of the at least one electrode satisfies the relationship (V)/(Y) 3 <60,000.

18. The method of claim 11 , wherein the at least one electrode comprises an elongated body that extends a predetermined distance into an interior chamber of the melting vessel.

19. The method of claim 18 , wherein the at least one electrode extends at an angle ranging from about 0 degrees to about 75 degrees relative to a plane parallel to the floor.

20. The method of claim 18 , wherein the melting vessel comprises at least one electrode comprising an elongated body that extends a predetermined distance into the interior chamber of the melting vessel from a position on the floor that is a predetermined distance away from the at least one sidewall.

21. The method of claim 11 , wherein the at least one electrode comprises at least one material selected from the group consisting of tin, molybdenum, platinum, and alloys and oxides of the same.

22. A glass article made by a method comprising processing a glass composition in a glass melt delivery system vessel, the glass melt delivery system vessel comprising:
at least one sidewall and floor, wherein the at least one sidewall and floor comprise a refractory material;
at least one electrode extending through the refractory material;
wherein the at least one electrode heats a glass melt in contact with the refractory material at an average temperature of at least about 1600° C. without exceeding a breakdown condition of the refractory material in contact with the glass melt;
wherein the melting vessel comprises the two opposing sidewalls, each opposing sidewall comprising at least two electrodes extending therethrough, wherein a ratio of the closest distance between the electrodes and a width of the electrodes in a lengthwise direction of the sidewall ranges from about 0.8:1 to about 2.4:1, and wherein a vertical distance between the floor and a bottom of the one of the electrodes is at least about 5% of a length of the electrode in the vertical direction.

23. The glass article of claim 22 , wherein the glass article is a glass sheet.

24. An electronic device comprising a glass article made by a method comprising processing a glass composition in a glass melt delivery system vessel, the glass melt delivery system vessel comprising:
at least one sidewall and floor, wherein the at least one sidewall and floor comprise a refractory material;
at least one electrode extending through the refractory material;
wherein the at least one electrode heats a glass melt in contact with the refractory material at an average

Assignees

• Corning Inc

Inventors

• De Angelis Gilbert
• Delamielleure Megan Aurora
• Peters Guido

Classifications

• C03B5/43 Primary

  Use of materials for furnace walls, e.g. fire-bricks · CPC title

• C03B5/03 Primary

  Tank furnaces · CPC title