... central venting and discharge units. 15tph Mobile Asphalt Drum Mixing Plant SLB-15 Model No.: SLB-15 Product Origin: China ... (s): ISO9001, ISO14001, OHSAS18000Rated productivity: 15tphMobile asphalt drum mixing plant is accurate in weighing, simple in structure, highly efficient, ... fast in site transit. It consists of dryer drum, mixing drum,central venting and discharge units.1) Rated productivity: ...