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Ultrasound as an aid in drying fine coal.

Authors
Wilson-JS; Moore-AS; Bowie-WS
Source
Chem Eng Prog Symp Ser 1971 Jan; 67(109):68-73
Link
NIOSHTIC No.
10010633
Abstract
Ultrasonic energy was investigated by the Bureau of Mines as an aid in drying fine coal fluidized with air at 300 deg. to 400 deg. F. Sound at frequencies of 17, 20.2, 35.5, 65, and 93 khz and amplitudes of about 135 db when applied in a 3-inch-diameter column aided water reduction from 10 to less than 1 percent by weight. Maximum increases in drying rates were achieved during the constant rate period, 46.9 percent when the sound was applied above the bed and 31.3 percent when it was applied below the bed.
CODEN
CEPSAB
Publication Date
19710101
Document Type
OP; Journal Article
Fiscal Year
1971
NTIS Accession No.
NTIS Price
Identifying No.
OP 131-71
Issue of Publication
109
ISSN
0069-2948
NIOSH Division
MERC
Source Name
Chemical Engineering Progress: Symposium Series
State
WV
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