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US 7,732,049 B2Granted
Pellets for Se encapsulation
AssigneeAgc Glass Europe
InventorsOlivier Collart, Benoit Cherdon, Pierre Carleer
Life of this patent
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Abstract
Pellets encapsulating selenium or a compound of selenium comprise one hollow cavity filled with the selenium surrounded by a matrix which is able to form an eutectic with at least one of the constituents of a batch of molten raw materials for the manufacture of glass.
Claims15
A capsule pellet, consisting of:
- a heart comprising at least one of selenium or a selenium compound;
- and
- a matrix encapsulating the heart;
- wherein
- the matrix comprises a compressed material that does not melt at a temperature less than 1300° C. at normal pressure,
- the compressed material does not contain any compound which would be a gas at a temperature less than 200° C.,
- the compressed matrix material forms a eutectic product having a melting temperature in a range of 400° C. to 1800° C. at normal pressure with at least one material which is a conventional constituent of glass, and
- a length of the capsule pellet in a largest dimension is at least 0.5 cm.
5 more elements
Dependencies are inferred from the claim text.