Draft
International Standard
ISO/DIS 8264
Hard coal — Determination of the swelling properties using a dilatometer
Reference number
ISO/DIS 8264
Edition 2
© ISO 2026
Draft International Standard
Under development
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 8264:1989

Abstract

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.

General information

  • Status
     : Under development
    Stage
    : DIS registered [40.00]
  • Edition
     : 2
    Number of pages
     : 13
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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