Which of the following is NOT a basic element of a batch plant?

• A. Hot Elevator
• B. Batch Tower
• C. RAP Entry Point
• D. Counter Flow Dryer

Answer: (D)

In a batch asphalt plant, material flows through a few distinct, repeating stages: aggregates are fed and dried, then heated and moved to the batch tower where they are weighed and separated into sizes for individual batches. The hot elevator is the conveyor that lifts heated material from the dryer up to the batch tower for screening and batching. The RAP entry point is where reclaimed asphalt pavement is added into the mix to be incorporated in each batch. A counter flow dryer describes a specific drying configuration used in some drum-type or continuous plants and is not listed as a fundamental module of a batch plant’s basic architecture. Because of that, it’s not considered a basic element of a batch plant, whereas the hot elevator, batch tower, and RAP entry point are.