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In a rotary apparatus and a process for the production of layered glass batch pellets there is provided a drying process and a dryer for final drying of the pellets prior to their being fed to a melting furnace. Relatively cool moist pellets are fed into a static bed-type dryer to form a uniformly d

In a rotary apparatus and a process for the production of layered glass batch pellets there is provided a drying process and a dryer for final drying of the pellets prior to their being fed to a melting furnace. Relatively cool moist pellets are fed into a static bed-type dryer to form a uniformly distributed pellet bed while a heating and drying gas is directed into the dryer in such a manner that the gas flows countercurrent to the direction of travel of the pellets through the dryer to maintain a temperature differential between the gas and the surface of the solid pellets in the bed throughout the bed\s entire height in the range of approximately 5°F. to 120°F. and, ideally, within approximately 50°F.

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A continuous process for the production of layered pellets for glass production, which comprises the following steps: (a) maintaining a moving bed of recycle pellets in the pelletizing zone of a rotary apparatus; (b) feeding sand and particles of a calcium carbonate source into said pelletizing zone

A continuous process for the production of layered pellets for glass production, which comprises the following steps: (a) maintaining a moving bed of recycle pellets in the pelletizing zone of a rotary apparatus; (b) feeding sand and particles of a calcium carbonate source into said pelletizing zone; (c) feeding a Na2O source comprised of a solution of sodium hydroxide into said pelletizing zone, said recycle pellets being coated with a layer comprised of said solution of sodium hydroxide, said sand and said calcium carbonate source to thereby form layered pellets; (d) passing said layered pellets into a heated drying zone to form dried layered pellets, said dried layered pellets having a residual moisture content of from about 4 to about 12 percent by weight; (e) passing said dried layered pellets from the drying zone to a recycle zone; (f) recycling a portion of said dried layered pellets to said pelletizing zone as said recycle pellets; (g) recovering a portion of said dried layered pellets from said recycle zone; and (h) feeding said recovered portion of layered pellets into a static bed dryer for preheating said pellets through a temperature range of approximately 100°F. to 1400°F. prior to feeding them to a glass furnace while maintaining the temperature differential between the surface of said pellets and the static bed drying gases in the range of 5°F. to 120°F. throughout said dryer.