ISO 11257:2022
ISO 11257:2022
Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallizationstandard by International Organization for Standardization, 03/01/2022
standard by International Organization for Standardization, 03/01/2022
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.