Abstract: A batch formulation for soda-lime glass comprising fine coal ash as an additional constituent which may be added either to the basic batch formulation prior to melting, or to the molten glass prior to processing into containers, flat glass or other such articles.
Abstract: Method and apparatus for direct coal firing of glass tank furnaces wherein pulverized coal entrained in an air stream is impelled through a nozzle into the furnace and combusted in the atmosphere directly above the melt in a glass furnace, to form a luminous flame, the direct coal firing preferably being used in conjunction with supplementary conventional heat sources.