Welcome to CDC stacks | Thickening fine coal refuse slurry for rapid dewatering and enhanced safety - 10748 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Thickening fine coal refuse slurry for rapid dewatering and enhanced safety
Filetype[PDF-6.63 MB]


This document cannot be previewed automatically as it exceeds 5 MB
Please click the thumbnail image to view the document.
Thickening fine coal refuse slurry for rapid dewatering and enhanced safety
Details:
  • 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

  • Document Type:
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like: