Experimental examination of factors that affect dust generation.
Plinke-MA; Leith-D; Holstein-DB; Boundy-MG
Am Ind Hyg Assoc J 1991 Dec; 52(12):521-528
A study was conducted to investigate factors that affect dust generation rates as a function of particle size. A device was constructed and a procedure developed to examine the effects of material type, moisture content, drop height, material flow, and entrained air. The overall dust generation rate, and the size specific dust generation rate were the primary variables investigated. Other variables identified affected either the binding forces that held materials together or the separating forces that separated and dispersed the materials. Dust generation increased with the increase in separation forces caused by a higher energy input such as an increase in drop height. Dust generation decreased when the interparticle binding forces were increased by the addition of water to the parent material. Drop height and material flow influenced the material separation forces and also significantly influenced the amount of dust generated. Statistical models were developed which indicated that the dust generation rate differed significantly among the four tested materials.
NIOSH-Publication; NIOSH-Grant; Control-technology; Airborne-dusts; Airborne-particles; Dust-exposure; Mineral-dusts; Particulate-dust; Dust-samplers
Epidemiology Univ of North Carolina Rosenau Hall 201 H Chapel Hill, NC 27514
American Industrial Hygiene Association Journal
University of North Carolina Chapel Hill, Chapel Hill, North Carolina