Coal Injector for Coarse Slurry Transport

Details

• Personal Author:
  Burnett M ; Cardenas RL ; Harvey A ; Roberge JC ; Rubin LS
• Description:
  An inducer-type pump, capable of injecting dry coal into a hydraulic transport pipeline was developed and installed in a specially designed and fabricated slurry injector vehicle. The full-scale prototype injector system can deliver up to 11 ton/min of coal into an 8-in pipeline at pressures up to 95 lb/in2. The injector operates on centrifugal principles with flow passing axially through a helical-pitched conical rotor. Water is delivered to the pump through an annular slot at the atmospheric pressure coal inlet. The spinning rotor maintains an air-core vortex of water that pressurizes the discharge housing. A screw feeds coal through the open inlet into the vortex. The inner radius of the vortex contracts as pressure is increased, giving a limiting maximum pressure that is proportional to the square of the rotor speed. Below this limit, flow rate, discharge pressure, and rotor speed are independent variables. The self-powered, 42-in-high slurry injector vehicle follows and receives run-of-mine coal from a continuous miner, reduces the top size to 3 in, and delivers the sized coal to the injector feed screw for slurry formation and pumps it through a mobile hose attached to the vehicle's outby end. [Description provided by NIOSH]
• Subjects:
  Coal Minerals Occupational Health Safety
• Keywords:
  Injectors Mineral-processing Slurry-pipelines Transport-mechanisms
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• Place as Subject:
  Massachusetts ; OSHA Region 1 ; OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-262
• NIOSHTIC Number:
  nn:10004289
• NTIS Accession Number:
  PB85-149441
• Citation:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract J0333914, 1983 Dec; :1-262
• Federal Fiscal Year:
  1984
• Performing Organization:
  Foster-Miller, Inc., Waltham, Massachusetts
• Peer Reviewed:
  False
• Source Full Name:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract J0333914
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8b8d75f8407eb523fd2e5f96c671d69a957cf357752f42d61913cda26979b0bf37750c83e4bdf361d75c3418978da0024a514d2fd702d179c98b5bfb86b32838
• Download URL:
  https://stacks.cdc.gov/view/cdc/206742/cdc_206742_DS1.pdf
• File Type:
  [PDF - 9.46 MB ]