Glass Batch Materials Having A Core-Shell Structure
AssigneeOwens-Brockway Glass Container Inc.
InventorsWitold W. Mastek, Desikan Sundararajan, Terence J. Clark, Melisa Y. Zambrano Becerra
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Abstract
A plurality of soda-lime glass batch materials are formed into granules that include a core and a shell surrounding the core. The core comprises a first portion of the plurality of glass batch materials, and the shell comprises a remaining portion of the plurality of glass batch materials. These core-shell granules can be melted in a glass furnace to produce molten soda-lime glass in less time and at a lower temperature than conventional soda-lime glass batch preparations.
Claims20
A core-shell granule for producing soda-lime glass, which includes:
- a plurality of glass batch materials in amounts according to a soda-lime glass batch composition;
- a core including a first portion of the plurality of glass batch materials;
- and
- a shell surrounding the core including a second portion of the plurality of glass batch materials.
A process for producing a soda-lime glass batch in granule form, which includes the steps of:
- (a) providing a plurality of glass batch materials in amounts according to a soda-lime glass batch composition, the plurality of glass batch materials including a silicon (Si)-containing material, a calcium (Ca)-containing material, and a sodium (Na)-containing material;
- (b) mixing a first portion of the plurality of glass batch materials with a first bonding agent to form core granules, wherein the first portion includes a major portion of the silicon (Si)- and calcium (Ca)-containing materials provided with the plurality of glass batch materials, but only a minor portion of the sodium (Na)-containing material provided with the plurality of glass batch materials;
- and
- (c) mixing a remaining portion of the plurality of glass batch materials with the core granules and a second bonding agent to form core-shell granules.
A process for producing soda-lime glass, which includes:
- feeding soda-lime glass batch materials to a glass furnace, wherein said glass batch materials are in the form of layered granules comprising a core that includes silica and limestone, and at least one layer surrounding said core that includes silica and soda ash.
A process for producing soda-lime glass that includes:
- (a) providing a plurality of glass batch materials in amounts according to a soda-lime glass batch composition, the plurality of glass batch materials including one or more silicon (Si)-containing materials, one or more calcium (Ca)-containing materials, and one or more sodium (Na)-containing materials, and wherein the plurality of glass batch materials are provided in the form of layered granules that include a core and a shell surrounding the core, with the core including a major portion of the one or more calcium (Ca)-containing materials;
- (b) feeding the layered granules to a glass furnace;
- (c) heating the layered granules in the glass furnace to form a soda-lime glass melt.
Dependencies are inferred from the claim text.