Some design criteria for reducing dust when handling clay bonded sand.
Proceedings of the symposium on occupational health hazard control technology in the foundry and secondary non-ferrous smelting industries, December 10-12, 1979, Chicago, Illinois. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 81-114, 1981 Aug; :168-187
Design criteria intended to reduce the dust generated by the handling of clay bonded sand in foundries were reviewed. The design of dust generating processes was examined with emphasis on the effect of moisture on sand dustiness, sand handling design, the addition of damp sand, use of an auxiliary muller, clay and coal dust additions, belt conveyors, pneumatic conveying, belt enclosure, bucket elevators, vacuum cleaning systems, mechanical shakeout and manual shakeout, and mechanical manipulation and handling. Vital features in controlling the amount of dust emitted during the transportation and molding of sand were found to be the restoration of the moist conditions of sand as soon as possible following shakeout and the use of material handling systems designed to minimize the emission of dust. Pneumatic conveying was shown to be the most flexible material handling system in this respect, while vacuum cleaning systems provided satisfactory housekeeping and cleanup of sand spills. The difficulties encountered in controlling dust generated during the shakeout operation were emphasized, and it was determined that manipulators were well suited for the remote control of the shakeout process.
NIOSH-Contract; Contract-210-79-0048; Dust-control; Control-methods; Air-quality-control; Occupational-hazards; Foundry-workers; Materials-handling-equipment; Industrial-processes; Mineral-dusts
Proceedings of the symposium on occupational health hazard control technology in the foundry and secondary non-ferrous smelting industries, December 10-12, 1979, Chicago, Illinois