Salt River
- Owner: Salt River Project
- Project: Coal Handling System Expansion
- Location: Springerville Generating Station Unit 4, Apache County, Arizona
- Scope: Engineering, Procurement, Expediting and Field Technical Assistance
Project Background
The conveying system is designed to receive rail delivered PRB coal. New chute work was designed to tie into the existing transfer tower to feed the new transfer tower for Unit 4 coal handling. The coal is transferred on dual 3,000 TPH stockout conveyors to dual radial stacker–reclaimers and discharged to form two 90,000–ton capacity storage piles. The coal is reclaimed from the two storage piles by the two radial stacker–reclaimers each with a reclaim capacity of 1,500 TPH. The dual reclaim conveyor path is through the new transfer tower to the Unit 4 crusher tower.
At the crusher tower, the reclaim conveyors discharge to the surge hopper. The coal is crushed with two 750 TPH double roll crushers from 4–inch to ¾–inch before being transferred to the expansion of the existing Unit 3 crusher tower which feeds coal to Unit 3 and new Unit 4 coal silos. Seven of the conveyors are enclosed in 3,300 feet of tubular gallery.
The coal handling system expansion includes dust collection for all new transfer points, dust suppression for the coal pile, and conveyor gallery ventilation.