Dry mortar production line: 1. Full-auto type line; 2. 2-3layer of ... silo, sand dryer, spiral conveyor, weighing system, hoisting machine, pre-mixing silo, mixing, end product silo, packing machine, dust collector, air-phase balance system, control system ... with Staircase, Screw Conveyor, Additives Storage, Weighing System, Mixing System, Packing System, Pneumatic System, Control System, Dust Collector ...