Report of Investigations 8824: Dewatering of Coal-Clay Waste Slurries from Preparation Plants

Details

• Journal Article:
  NTIS: PB84/140847
• Personal Author:
  Brown, Pat M. ; Scheiner, Bernard J.
• Description:
  The Bureau of Mines is investigating a dewatering technique for coal- clay waste that uses a flocculant, polyethylene oxide (peo). This flocculant forms strong stable flocs that can be dewatered on a static screen. A field test unit (ftu) using this technique was operated at approximately 400 gal/min, using a waste stream from the flotation circuit of a coal preparation plant. Consolidated coal- clay material containing 55 to 60 pct solids was produced when the flotation circuit slurries of 2.7 to 8 pct solids were treated with 0.1 to 0.3 Lb peo per ton of solids. The ftu was also operated at 64.5 and 87.5 Gal/min using a portion of the underflow slurry from the preparation plant's thickener. Consolidated coal-clay material containing 55 to 60 pct solids was produced when the thickener underflow slurries of 19 to 24 pct solids were treated with 0.08 To 0.2 Lb peo per ton of solids. Peo-treated materials continued to dewater when placed in a pit. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Mining Occupational Health Safety Waste Management
• Source:
  NTIS: PB84/140847; :1-8
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  United States
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  TURC - Tuscaloosa Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  13 pdf pages
• NIOSHTIC Number:
  nn:10003178
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5e56f714046e4e98407562749c6927a0bd9d45cd3fb9d24f0afc7ac68995f2a1b0063b54f48bc837b306fde0e9bfcc457ab0e407c0ba14ca702e76dd36f8c5fc
• Download URL:
  https://stacks.cdc.gov/view/cdc/10411/cdc_10411_DS1.pdf
• File Type:
  [PDF - 4.31 MB ]