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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 ISO 11257:2022

Publication date:   Mar 22, 2022

General information

60.60 Standard published   Mar 22, 2022

ISO

ISO/TC 102/SC 3 Physical testing

International Standard

73.060.10   Iron ores

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11257:2015

NOW

PUBLISHED
ISO 11257:2022
60.60 Standard published
Mar 22, 2022