Method of producing glass from agglomerates which include organic coated scrap glass
AssigneeOwens-Corning Fiberglas Corporation
InventorsPatrick F. Aubourg, Mark A. Propster
Life of this patent
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Abstract
A process is provided for employing scrap glass (cullet) having an organic coating thereon in an overall process wherein molten-glass forming ingredients are converted into agglomerates and the agglomerates preheated to an elevated temperature prior to melting in a glass melting furnace. The organic coating is pyrolized, i.e., thermally decarbonized, during the preheating of the agglomerates.
Claims9
In a process comprising converting molten-glass forming ingredients and water into agglomerates, heating a vertical bed of gravitationally downwardly moving agglomerates in a chamber by direct contact with a gaseous heating medium so as to produce dry, heated non-aggregated agglomerates, melting said agglomerates in a glass melting furnace, the improvement wherein a portion of said molten-glass forming ingredients includes glass cullet having an organic coating thereon and pyrolizing said coating during said heating step.
Dependencies are inferred from the claim text.