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About This Item
Full Description
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.
Document History
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ISO 11257:2022
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Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization- Most Recent
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ISO 11257:2015
Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization- Historical Version
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ISO 11257:2007
Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization- Historical Version
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ISO 11257:1998
Iron ores -- Determination of disintegration and metallization of feedstock for direct reduction by gas reforming processes- Historical Version