Ppg Industries, Inc.

Clement C Moxie

Gerald E Kunkle

Henry M Demarest, Jr

Raw materials such as glass batch are preheated by combustion of liquid or solid fuel such as fuel oil or coal mixed with the batch material. In one embodiment the material being heated and the gaseous products of combustion are passed cocurrently through the preheating stage to avoid carbonaceous effluents. Preheated materials and any ash from the fuel are transferred to a second stage where they are liquefied. Carbon monoxide from the preheating stage may serve as fuel for the liquefying stage.

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Natrona Heights, PA, United States of America

Clement C Moxie