Pore, surface and fillet moisture in centrifuged beds of coarse coal
Identifieur interne : 00B079 ( Main/Exploration ); précédent : 00B078; suivant : 00B080Pore, surface and fillet moisture in centrifuged beds of coarse coal
Auteurs : B. R. Stanmore [Australie, France] ; A. Hosking [Australie] ; E. T. White [Australie] ; B. A. Firth [Australie]Source :
- Fuel : (Guildford) [ 0016-2361 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Charbon.
English descriptors
- KwdEn :
Abstract
The moisture content of the coarse coking coal product from the centrifuges of preparation plants was investigated to evaluate the contribution of three types of water: that held internally in pores, that in fillets at points of contacts between the particles, and the moisture covering the surface. A standardised laboratory centrifuge test was used to measure the total non-centrifugable moisture (NCM) content and also the quantity held in internal pores, called NCMi. The fillet moisture NCMf was estimated by means of a formulation which relies on experimentally measured holdup volumes, supplemented by a physical model. The surface moisture NCM, could then be derived by difference. The NCMf, which depends on the body force, the particle size and the surface tension and contact angle of the liquid, ranges from effectively zero for large particles to 10% for fines. The surface moisture NCM, is of the order of 0.5% for high rank coals and increases to 1.5% for lower rank coals.
Affiliations:
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Stanmore</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Queensland</s1><s2>Q 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Q 4072</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Ecole des Mines d'Albi-Carmaux, Route de Teillet</s1><s2>81000 Albi</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>81000 Albi</wicri:noRegion><wicri:noRegion>Route de Teillet</wicri:noRegion><wicri:noRegion>81000 Albi</wicri:noRegion></affiliation></author><author><name sortKey="Hosking, A" sort="Hosking, A" uniqKey="Hosking A" first="A." last="Hosking">A. 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R." last="Stanmore">B. R. Stanmore</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Queensland</s1><s2>Q 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Q 4072</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Ecole des Mines d'Albi-Carmaux, Route de Teillet</s1><s2>81000 Albi</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>81000 Albi</wicri:noRegion><wicri:noRegion>Route de Teillet</wicri:noRegion><wicri:noRegion>81000 Albi</wicri:noRegion></affiliation></author><author><name sortKey="Hosking, A" sort="Hosking, A" uniqKey="Hosking A" first="A." last="Hosking">A. Hosking</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Queensland</s1><s2>Q 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Q 4072</wicri:noRegion></affiliation></author><author><name sortKey="White, E T" sort="White, E T" uniqKey="White E" first="E. T." last="White">E. T. White</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Queensland</s1><s2>Q 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Q 4072</wicri:noRegion></affiliation></author><author><name sortKey="Firth, B A" sort="Firth, B A" uniqKey="Firth B" first="B. A." last="Firth">B. A. Firth</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Cool and Energy Technology Division, CSIRO</s1><s2>Brisbane Q 4069</s2><s3>AUS</s3><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Brisbane Q 4069</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Fuel : (Guildford)</title><title level="j" type="abbreviated">Fuel : (Guildf.)</title><idno type="ISSN">0016-2361</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Fuel : (Guildford)</title><title level="j" type="abbreviated">Fuel : (Guildf.)</title><idno type="ISSN">0016-2361</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Centrifuge</term><term>Coal</term><term>Coal rank</term><term>Coking coal</term><term>Contact angle</term><term>Fine particle</term><term>Laboratory test</term><term>Particle size</term><term>Physical model</term><term>Porosity</term><term>Surface tension</term><term>Water content</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Charbon</term><term>Charbon cokéfiable</term><term>Teneur eau</term><term>Centrifugeuse</term><term>Porosité</term><term>Essai laboratoire</term><term>Modèle physique</term><term>Dimension particule</term><term>Tension superficielle</term><term>Angle contact</term><term>Particule fine</term><term>Rang charbon</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Charbon</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The moisture content of the coarse coking coal product from the centrifuges of preparation plants was investigated to evaluate the contribution of three types of water: that held internally in pores, that in fillets at points of contacts between the particles, and the moisture covering the surface. A standardised laboratory centrifuge test was used to measure the total non-centrifugable moisture (NCM) content and also the quantity held in internal pores, called NCM<sub>i</sub>. The fillet moisture NCM<sub>f</sub> was estimated by means of a formulation which relies on experimentally measured holdup volumes, supplemented by a physical model. The surface moisture NCM, could then be derived by difference. The NCM<sub>f</sub>, which depends on the body force, the particle size and the surface tension and contact angle of the liquid, ranges from effectively zero for large particles to 10% for fines. The surface moisture NCM, is of the order of 0.5% for high rank coals and increases to 1.5% for lower rank coals.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Stanmore, B R" sort="Stanmore, B R" uniqKey="Stanmore B" first="B. R." last="Stanmore">B. R. Stanmore</name></noRegion><name sortKey="Firth, B A" sort="Firth, B A" uniqKey="Firth B" first="B. A." last="Firth">B. A. Firth</name><name sortKey="Hosking, A" sort="Hosking, A" uniqKey="Hosking A" first="A." last="Hosking">A. Hosking</name><name sortKey="White, E T" sort="White, E T" uniqKey="White E" first="E. T." last="White">E. T. White</name></country><country name="France"><noRegion><name sortKey="Stanmore, B R" sort="Stanmore, B R" uniqKey="Stanmore B" first="B. R." last="Stanmore">B. R. Stanmore</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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