The process
The rotary dryer takes hot air from a furnace and the cooler takes ambient air, both through the product bed with exhaust fans that pull the dust-laden air through cyclones and scrubbers.
The gas
Dryer exhaust with heavy carry-over of the dried material and the moisture it gave up. Dust goes to a cyclone and bag filter, and the fan behind them handles warm, wet gas with residual fines.
Selection for this process
| Role | Pre-collector for the coarse fraction ahead of a bag filter or scrubber |
| Construction | Mild steel with wear plates at the inlet |
| Discharge | Hopper with rotary air lock valve |
Types, construction and performance of the cyclonic separator.
Industries
Fans in fertilizer rotary dryers and coolers
Cyclonic Separator in other processes
Ceramic Body Spray DryersFood and Dairy Spray DryersRotary DryersTobacco Primary ProcessingFlour and Grain MillsCoal Handling PlantsMineral Crushing and ScreeningPlywood and Wood ProcessingRice Mills and Paddy DryersAnimal Feed MillsFoundry Sand Reclamation
Information needed to select or quote
- Gas volume and temperature. Actual flow at the inlet, normal and upset temperature, moisture.
- Dust or pollutant. Inlet loading, particle size distribution, whether it is abrasive, sticky, hygroscopic or combustible; for gases, the species and concentration.
- Required outlet. The emission limit or clean gas concentration the unit must meet.
- Site. Available space and height, material of construction preferences, and how the collected material is to be discharged.