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ISO 11257:2022

Iron ores for shaft direct-reduction feedstocks — Determination of the low-temperature reduction-disintegration index and degree of metallization

General information
Valid from 22.03.2022
Directives or regulations
None
Standard history
Status
Date
Type
Name
22.03.2022
Main
17.08.2015
Main
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.
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