Résumé
A test piece, in the form of a pencil, prepared from powdered coal is heated at a constant rate in a steel retort positioned in a furnace, the temperature monitoring system having been previously calibrated using two reference metals of known melting points. The change in level of a piton resting upon the test piece is observed continuously, and record is produced which is characteristic of the swelling properties of the coal.
Informations générales
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État actuel: PubliéeDate de publication: 1989-11Stade: Clôture de l'examen [90.60]
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Edition: 1Nombre de pages: 9
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Comité technique :ISO/TC 27/SC 5ICS :73.040
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Cycle de vie
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Actuellement
PubliéeISO 8264:1989
Les normes ISO sont réexaminées tous les cinq ans
Stade: 90.60 (En cours d'examen)