Problem: While mixing ingredients in solution and spray drying into a fine powder creates a very uniform blend, the fine cohesive nature of many spray dried powders often creates problems in dustiness, flow-ability, and dissolution in downstream processes. In this particular situation, a powder granulation process was needed in order to improve production efficiency.
One example of a customer product requirement was:
Powder granulation process considerations included:
Solution: Multiple feed materials were tested in Bepex’s Process Development center. A complete powder granulation and compaction system, with easy to change parts to best accommodate different feed stocks was developed. Compacting, milling, and screening the fine powder into a granular form solved all four of the customer’s problems. A near dustless and free-flowing granular product readily dissolved into solution without clumping like the fine powder. Additionally, the powder granulation system was able to run continuously without shutting down due to plugging issues – an issue their previous wet-agglomeration process experienced.
Benefits and Results: