Abstract: An agglomerator includes:(a) a drum having a longitudinal axis, and structure for supporting and rotating the drum about that axis,(b) feed apparatus extending axially within the drum for feeding flowable material into the drum for longitudinal distribution and tumbling therein,(c) rods carried by the drum to extend generally longitudinally therein, certain rods located closer to said axis than other rods, the rods distributed about said axis, and(d) liquid spray apparatus within the drum for spraying liquid into the flowable material tumbling within the drum interior.