Sand, Rock and Aggregate Processing
Sand, Rock and Aggregate Plants are operated by the mineral product industry to process sands, rocks, aggregates or recycled concrete and asphalt. The materials processed by these plants are transported to the site or are blasted from an on-site quarry. These plants typically include crushers, screens, conveyors, loadout system, stockpiles, storage bins and haul roads. Crushers used by these plants include jaw crushers, cone crushers and impact crushers. Common screen types include grizzlies, shaking or vibrating screens.
Air contaminant emitted from operations of these sand, rock and aggregate plants include particulate matter and toxic air contaminants. Particulate matter emissions are controlled by water spray, fog spray, surfactant, covered screen and covered conveyor, or by venting crushers, screens and conveyors to baghouses. Emissions from haul roads and material storage areas must also be controlled by watering or other control measure.