Abstract

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 

  • Status
     : Withdrawn
    Publication date
     : 1994-01
  • Edition
     : 1
    Number of pages
     : 13
  • Technical Committee
     : ISO/TC 102/SC 3 Physical testing
  • ICS
     :
    73.060.10 Iron ores

Life cycle

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