Suppression of respirable dust with foam

Details Suppression of respirable dust with foam Suppression of respirable dust with foam

1982-03-17

1983-08-23

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Combined

134 251, 134 32, 134131, 299 12, 239 8, 239343, 252 88, 261DIG26, B08B 1500

Patent

active

044002203

ABSTRACT:
This invention prevents dust, and particularly respirable dust, from becoming airborne at locations where coal or other dusty products are transferred from one support to another, and where spaces between the pieces of broken material open up and would otherwise release dust into the surrounding atmosphere. Foam, having bubbles small enough to be broken by respirable dust particles, is discharged into the spaces where the small bubbles, bursted by the dust particles, implode and wet the particles and cause adherence of the particles to adjacent surfaces, such as other foam or the broken pieces of material that separate to open up the spaces.

REFERENCES:
patent: 3533473 (1970-10-01), Jamison
patent: 3734834 (1973-05-01), Bricmont
patent: 3757491 (1973-09-01), Gourdine
patent: 3811247 (1974-05-01), Huppke
patent: 3954662 (1976-05-01), Salyer et al.
patent: 3974965 (1976-08-01), Miller
patent: 4000992 (1977-01-01), Cole
Bikerman, Foams (1973), pp. 1-2, 38-39, 312-313.
Wojtowicz et al., "Foam Suppression of Respirable Coal Dust", USBM Contract Final Report HO111351, Department of Interior: Bureau of Mines, Oct. 1974.

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