Status : Published (Under review)
This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
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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
     : Published
    Publication date
     : 1989-11
    Stage
    : International Standard under systematic review [90.20]
  • Edition
     : 1
    Number of pages
     : 9
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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