Method and device for melting and refining materials capable of being vitrified
AssigneeSaint-Gobain Glass France
InventorsPierre Jeanvoine, Tanguy Massart, Anne Berthereau
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Abstract
A process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials (7). The refining of the vitrifiable materials after melting comprises at least one step of subjecting them to subatmospheric pressure while centrifuging.
Claims8
Apparatus for refining a molten vitrifiable materials under a centrifugal force and under subatmospheric pressure comprising:
- a device adapted to be rotated such that a molten vitrifiable material therein is centrifugally refined;
- and
- at least one subatmospheric-pressure zone adapted to receive the molten vitrifiable material,
- wherein the said device includes an upper zone at subatmospheric pressure and a lower zone at an ambient pressure.
Dependencies are inferred from the claim text.