Panel-cooled submerged combustion melter geometry and methods of making molten glass
US-9505646-B2 · Nov 29, 2016 · US
Method for producing glasses, glass ceramics and the use of same
US9676643B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9676643-B2 |
| Application number | US-201414463662-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 20, 2014 |
| Priority date | Feb 22, 2012 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
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Abstract
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A method for producing bubble-free glasses is provided, in which a glass mixture that is arsenic-free, antimony-free and tin-free with the exception of any unavoidable raw material impurities and at least one sulfate compound as a refining agent are used. The glass mixture and refining agent are melted and primarily refined in a first region of a melting tank, an average melting temperature (T1) is set at T1>1580° C. and an average melt residence time (t1) is set at t1>2 hours. A secondary refinement is carried out in a second region, an average melting temperature (T2) is set at T2>1660° C. and an average melt residence time (t2) is set at t2>1 hour, and the proportion of the SO 3 resulting from decomposition of the sulfate is reduced to less than 0.002 wt. %.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing glasses, comprising: using a glass batch that is free of arsenic, antimony, and tin except for unavoidable raw-material impurities; using at least one sulfate compound as refining agent; melting and primarily refining the glass batch and the refining agent in a first region of a furnace melting tank, wherein in the first region, an average melt temperature T 1 is set at 1580° C.<T 1 ≦1660° C. and an average residence time of the m…
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- C03B5/225Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9676643B2 cover?
- A method for producing bubble-free glasses is provided, in which a glass mixture that is arsenic-free, antimony-free and tin-free with the exception of any unavoidable raw material impurities and at least one sulfate compound as a refining agent are used. The glass mixture and refining agent are melted and primarily refined in a first region of a melting tank, an average melting temperature (T1…
- Who is the assignee on this patent?
- Schott Ag
- What technology area does this patent fall under?
- Primary CPC classification C03B5/225. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 13 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).