Cost-effective crushing - 24 BOOSTING PRODUCTION AND EFFICIENCY. PREMIER ES303 screen at Texas sand and gravel plant. 26 GETTING STARTED WITH IN-HOUSE. AGGREGATES PRODUCTION. ST4.8 screen at Ecoservice SRL, Romania. 29 HELPING VALE'S SALOBO MINE IMPROVE PRODUCTION. A mobile crushing.specifiion roll crusher productivity 300 tph, QJ331 jaw crusher Technical specification sheet - HubSpotThe QJ331 jaw crusher further develops the very latest technology used within the Q-range . rates of production and is able to sustain superb reduction ratios. .. 300 tph / 336 stph. Travel Speed. 1.0 km/h / 0.62 mph. Max Incline. 20°. Max Incline (Side to Side). 10°. Main conveyor dust cover. Lighting mast and cabinet lights.