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ISO 11258:2015

Iron ores for shaft direct-reduction feedstocks — Determination of the reducibility index, final degree of reduction and degree of metallization

Aug 17, 2015

General information

90.60     Jun 5, 2026

ISO

ISO/TC 102/SC 3

International Standard

73.060.10  

English  

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Scope

ISO 11258:2015 specifies a method to provide a relative measure for evaluating the extent to and ease to which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. It specifies the determination of the reducibility, final degree of reduction, and degree of metallization.
ISO 11258:2015 is applicable to lump ores and hot-bonded pellets.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11258:2007

NOW

PUBLISHED
ISO 11258:2015
90.60 Close of review
Jun 5, 2026