Breakage characteristics of coal-water slurries

Heechan Cho, Mark Stephen Klima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Grinding tests were conducted under various conditions to characterize the breakage characteristics of coal-water mixtures. Five bituminous coals were ground in a conventional tumbling ball mill for different times at solids concentrations of 40-70% by weight, with and without the use of a dispersant. For a given coal, the grinding rate decreased as the solids concentration increased, whereas grinding at a higher solids concentration produced a higher proportion of fines, giving a flatter distribution. However, even at the highest slurry density, the product size distribution was steeper than the broad size distribution recommended for maximum solids loading and minimum viscosity. Additional grinding tests were performed in a stirred ball mill, aiming at a two-stage grinding method for producing coal-water mixtures. On the basis of the breakage parameters obtained from the laboratory tests, simulations were performed to analyze an industrial scale two-stage grinding circuit.

Original languageEnglish (US)
Pages (from-to)1220-1226
Number of pages7
JournalEnergy and Fuels
Volume10
Issue number6
DOIs
StatePublished - Jan 1 1996

Fingerprint

Coal breakage
Coal
Slurries
Coal water mixtures
Grinding (comminution)
Ball mills
Water
Barreling
Bituminous coal
Viscosity
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Cho, Heechan ; Klima, Mark Stephen. / Breakage characteristics of coal-water slurries. In: Energy and Fuels. 1996 ; Vol. 10, No. 6. pp. 1220-1226.
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Breakage characteristics of coal-water slurries. / Cho, Heechan; Klima, Mark Stephen.

In: Energy and Fuels, Vol. 10, No. 6, 01.01.1996, p. 1220-1226.

Research output: Contribution to journalArticle

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