Fugitive emissions control for solid materials handling operations

Exhaust ventilation criteria are presented for solid materials handling operations encountered in the mining, processing, and utilization of coals, ores, aggregate materials, etc., where extensive size reduction, classification, and materials transfer procedures are required. Basic theoretical concepts and supporting pilot plant studies heretofore unreported are described. Ventilation requirements were investigated with a 7 ton/h belt transfer and elevator system in which solids ranging from coarse sand to % in. crushed stone were dumped over elevations of 2-8 ft with different hood shapes and varying degrees of enclosure, the latter factor playing a key role in determining ventilation requirements. Predictive equations are presented based upon pilot plant tests and subsequent field applications in which the basic equations were used directly or modified to account for variables not investigated in the laboratory. Present indications are that existing modeling equations may be extrapolated to 350 ton/h sy...