A preliminary assessment of hazard control technology in siliceous and lead ore beneficiation is presented. Various ore processing operations are described, including transport and loading, crushing and grinding, sizing, scrubbing and washing, gravity concentration, froth flotation, basic flotation circuits, extractive metallurgy, and pyrometallurgy. Available information on copper, lead, and siliceous ore beneficiation processes is reviewed. Also discussed are health hazards in the industry and control technology used to reduce noxious waste products. The author recommends additional evaluations of control technologies used in siliceous and lead ore beneficiation.
NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, 82 pages, 80 references