Објављен
This document 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 document is applicable to lump ores and hot-bonded pellets.
ПОВУЧЕН
ISO 11257:2015
ОБЈАВЉЕН
ISO 11257:2022
60.60
Стандард објављен
22. 3. 2022.