ISO 11257:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation and degree of metallization of iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes.
ISO 11257:2007 is applicable to lump ores and hot-bonded pellets.
Status: WithdrawnPublication date: 2007-10
Edition: 2Number of pages: 8
Technical Committee: ISO/TC 102/SC 3 Physical testing