ISO 4698:1994
ISO 4698:1994


The principle of the method specified is determination of swelling of fired iron ore pellets of a specified size range under isothermal reduction, determination of the volume of pellets before and after reduction at a temperature of 900 °C, using a reducing gas consisting of carbon monoxide and nitrogen, calculation of the free-swelling index, expressed as a percentage, using the difference between the two volumes.

General information 

  •  :  Withdrawn
     : 1994-01
  •  : 1
     : 13
  •  : ISO/TC 102/SC 3 Physical testing
  •  :
    73.060.10 Iron ores

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