POC-SCALE TESTING OF A DRY TRIBOELECTROSTATIC SEPARATOR FOR FINE COAL CLEANING

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Description

Work continued during the past quarter to improve the performance of the POC-scale unit. For the charging system, a more robust ''turbocharger'' has been fabricated and installed. All of the internal components of the charger have been constructed from the same material (i.e., Plexiglas) to prevent particles from contacting surfaces with different work functions. For the electrode system, a new set of vinyl-coated electrodes have been constructed and tested. The coated electrodes (i) allow higher field strengths to be tested without of risk of arcing and (ii) minimize the likelihood of charge reversal caused by particles colliding with the conducting ... continued below

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24 p.

Creation Information

Yoon, R.-H.; Luttrell, G.H.; Luvsansambuu, B. & Walters, A.D. October 1, 2000.

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Description

Work continued during the past quarter to improve the performance of the POC-scale unit. For the charging system, a more robust ''turbocharger'' has been fabricated and installed. All of the internal components of the charger have been constructed from the same material (i.e., Plexiglas) to prevent particles from contacting surfaces with different work functions. For the electrode system, a new set of vinyl-coated electrodes have been constructed and tested. The coated electrodes (i) allow higher field strengths to be tested without of risk of arcing and (ii) minimize the likelihood of charge reversal caused by particles colliding with the conducting surfaces of the uncoated electrodes. Tests are underway to evaluate these modifications. Several different coal samples were collected for testing during this reporting period. These samples included (i) a ''reject'' material that was collected from the pyrite trap of a pulverizer at a coal-fired power plant, (ii) an ''intermediate'' product that was selectively withdrawn from the grinding chamber of a pulverizer at a power plant, and (iii) a run-of-mine feed coal from an operating coal preparation plant. Tests were conducted with these samples to investigate the effects of several key parameters (e.g., particle size, charger type, sample history, electrode coatings, etc.) on the performance of the bench-scale separator.

Physical Description

24 p.

Notes

OSTI as DE00772391

Medium: P; Size: 24 pages

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  • Other Information: PBD: 1 Oct 2000

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  • Report No.: DE--AC22-95PC95151--20
  • Grant Number: AC22-95PC95151
  • DOI: 10.2172/772391 | External Link
  • Office of Scientific & Technical Information Report Number: 772391
  • Archival Resource Key: ark:/67531/metadc718222

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • October 1, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

Description Last Updated

  • April 10, 2017, 4:43 p.m.

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Yoon, R.-H.; Luttrell, G.H.; Luvsansambuu, B. & Walters, A.D. POC-SCALE TESTING OF A DRY TRIBOELECTROSTATIC SEPARATOR FOR FINE COAL CLEANING, report, October 1, 2000; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc718222/: accessed May 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.