Batch Dryers - Pharmaceutical Engineering
A normal charge would be about 60% of the total volume, and for dryers 0.7 to 2 m in diameter, drying times of 2 to 12 hours may be expected. In studying the application of tumbler dryers to drying tablet granules, it was found that periods of 2 to 4 hours replaced times of 18 to 24 hours obtained with hot air ovens.
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