Details:

Personal Author:
Stewart, Bill M. ; Backer, R. R. (Ronald R.) ; Busch, R. A. (Richard A.)
Stewart, Bill M. ; Backer, R. R. (Ronald R.) ; Busch, R. A. (Richard A.) Less -
Corporate Authors:
United States. Bureau of Mines.
Description:
"To decrease the potential for fine coal waste slurry impoundment failures, the Bureau of Mines investigated a new disposal technique. The fine coal waste slurry is rapidly thickened (i.e., dewatered) and deposited on a slightly sloping surface. To accomplish rapid dewatering, a chemical flocculation system using polymers was developed to treat the fine coal waste slurry stream. The fine solids formed flocs, settled from suspension, and rapidly released excess water. During the last 5 days of the field test, slurry flowing at rates from 498 to 675 gal/min with a specific gravity range of 1.15 to 1.33 Was successfully treated and dewatered. During this period, untreated slurry had an average moisture content of 227.4 pct (30.7 Wt pct solids). The effectiveness of the dewatering system was determined by monitoring the moisture content of the deposited waste with respect to time. Sixty-five hours after ending the field test the average moisture content was 54.9 pct (64.5 Wt pct solids); 68 days after the field test the average moisture content was 28.8 pct (78.0 Wt pct solids)." - NIOSHTIC-2

NIOSHTIC no. 10005461


Subject:
[+]
Coal Mine Waste.
Coal Slurry.
Sanitary Landfills.

Series:
Report of investigations (United States. Bureau of Mines) ; 9057
Document Type:
Report
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:c7ef3f4a22fbfbfe999ddc7a1688d012d790e75e8a360bf0c7e47129554b8248
File Type:

Supporting Files

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