... : the production line equipments mainly includes the following machines:crusher, rotary drum granulator, rotary dryer, rotary cooler, screening machine, vertical mixer, belt conveyor, fertilizer ... conveyor 39 Draft inducer 30 18.510Air pipes 11Hopper 12Dust collecter 13Hot air furnace 14Feeder 5.515Packaging machine 5 Compound fertilizer production line ...