- Slag: Characteristic ash removed from furnace walls
- Bottom ash: Ash removed from the bottom of the furnace
- Clinker: Large piece of bottom ash that must be broken up before transport
- Fly ash: Ash carried by the flue gas into the backpass region and beyond
- Popcorn ash: Characteristic ash collected in economizer and air heater hoppers
- Dust: Fine ash particulate
- Hydro ejector: Venturi device that pulls bottom ash into hydraulic transport system
- Water bin: Dewatering bin for removing water from bottom ash
- Hydrovactor: Venturi device that provides vacuum source for pneumatic transport
- Airlock value: Two chamber device for feeding ash into higher pressure transport line
- Materials handling valve: Valve that admits flyash and air flow into vacuum transport line
- Collector: Ash/air separator and transfer tank from vacuum system to silo
- Transporter: Fly ash collection and aeration vessel for dense phase pneumatic transport
- Vacuum/pressure transfer station: Collection and transfer vessel from vacuum line to pressurized line in combination vacuum/pressure pneumatic system
- Drag chain: Primary mover in mechanical drag conveyor system
- Flights: Attached to drag chain to push ash along stationary platform
- Unloader: Device to unload dry ash storage silo into transport vehicles
- Conditioner: Adds water to flyash during unloading to minimize airborne dust
- Pugmill: One version of combined silo unloader/conditioner
Source: B&W
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