21/30436656 DC

This standard 21/30436656 DC BS ISO 11257. Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization is classified in these ICS categories:

• 73.060.10 Iron ores

This International Standard 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.

This International Standard is applicable to lump ores and hot-bonded pellets.