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A variable feed rate mechanism for fluidized bed asbestos generators.

R G Sussman·J M Gearhart·M Lippmann
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Abstract

A simple and inexpensive dust feed mechanism has been designed for use with a two-phase fluidized bed generator (FBG). The mechanism is especially useful for generating asbestos aerosols, but may be used with other dusts as well. Using this system, a steady state concentration (39.1 fibers/cc greater than 5 microns in length +/- 6.2%) of asbestos aerosol was maintained in an inhalation chamber for five hours. In addition, FBG output concentration was easily adjusted and quickly equilibrated (within 10 minutes). The system provides a good technique for generating asbestos aerosols for day-long animal exposures.

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AerosolsAsbestosAsbestos, CrocidoliteDustEquipment and SuppliesJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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R G Sussman, J M Gearhart, M Lippmann. 1985. A variable feed rate mechanism for fluidized bed asbestos generators.. https://doi.org/10.1080/15298668591394329

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