EXPERIMENTAL DETERMINATION OF THE POWER REQUIREMENTS FOR ULTRAFINE GRINDING AND DRYING OF LOW-RANK COALS IN A FLUID-ENERGY MILL

EXPERIMENTAL DETERMINATION OF THE POWER REQUIREMENTS FOR ULTRAFINE GRINDING AND DRYING OF LOW-RANK COALS IN A FLUID-ENERGY MILL

An experimental evaluation of the power requirements for simultaneous ultrafine grinding and drying of low-rank coals in a fluid-energy mill was undertaken. Two different lignites and a subbituminous coal were used in the study. Ultrafine grinding tests were conducted with air nominally at ambient c...

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Veröffentlicht in:Particulate science and technology 1992-07, Vol.10 (3-4), p.171-182
Hauptverfasser: STEELE, W. G., BOUCHILLON, C. W.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Coal and derived products
Energy
Exact sciences and technology
Fuels
Mechanical preparation
Processing
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Zusammenfassung:An experimental evaluation of the power requirements for simultaneous ultrafine grinding and drying of low-rank coals in a fluid-energy mill was undertaken. Two different lignites and a subbituminous coal were used in the study. Ultrafine grinding tests were conducted with air nominally at ambient conditions and with steam at temperatures ranging from 240°F to 488°F. It was found that grinding with ambient air used about 10 KWH/Ton. Steam grinding at about 500°F mill temperature required about 260 KWH/Ton.
ISSN:0272-6351
1548-0046
DOI:10.1080/02726359208906610