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ISO 11257:2022Published

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

Minerais de fer pour charges utilisées dans les procédés par réduction directe — Détermination de l'indice de désintégration par réduction à basse température et du degré de métallisation

Abstract / 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

Replaces

ISO 11257:2015WithdrawnIron ores for shaft direct-reduction feedstocks — Determination of the low-temperature reduction-disintegration index and degree of metallizationInternational Standard · Published 17 Aug 2015 · ISO/TC 102/SC 3