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.
Revises
ISO 11257:1998
WITHDRAWN
ISO 11257:2007
95.99
Withdrawal of Standard
Aug 17, 2015
WITHDRAWN
ISO 11257:2015
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