title: A dust generator for laboratory use.
abstract: A dust generator has been developed to produce dry dust from powderous materials for instrument calibration and laboratory studies. The powder is fed at a constant rate via a chain conveyor into a fluidized bed where the particles are deagglomerated and aerosolized. The powder feed rate is raviable from 1.2 to 36 mm3/min and the air flow rate from 9 to 30 Lpm. Aerosols of coal, silica, potash, rock, and Arizona road dust have been successfully generated for calibrating optical particle counters and aerosol mass monitors.
mesh_terms: D000336:Aerosols; D001130:Arizona; D002138:Calibration; D003031:Coal / Q000032:analysis; D003300:Copper / Q000032:analysis; D004391:Dust; D004864:Equipment and Supplies; D005069:Evaluation Studies as Topic; D007753:Laboratories; D010316:Particle Size; D011188:Potassium / Q000032:analysis; D012822:Silicon Dioxide / Q000032:analysis
chemical_list: D000336:Aerosols; D003031:Coal; D004391:Dust; D012822:Silicon Dioxide; D003300:Copper; D011188:Potassium