ISO 11257:1998
Iron ores - Determination of disintegration and metallization of feedstock for direct reduction by gas reforming processes

Standard No.

ISO 11257:1998

Release Date

1998

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 11257:2007

Latest

ISO 11257:2022

Scope

This International Standard specifies a test method for evaluating the disintegration and metallization behaviour of iron ore pellets and lumps under conditions that resemble the ones prevailing in direct reduction by gas reforming processes, such as the Midrex-type process. note: 1) Midrex is a trade-name used by Midrex International B.V. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of the method named. Equivalent methods may be used if they can be shown to lead to the same results.

ISO 11257:1998 history

• 2022 ISO 11257:2022 Iron ores for shaft direct-reduction feedstocks — Determination of the low-temperature reduction-disintegration index and degree of metallization
• 2015 ISO 11257:2015 Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization
• 2007 ISO 11257:2007 Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization
• 1998 ISO 11257:1998 Iron ores - Determination of disintegration and metallization of feedstock for direct reduction by gas reforming processes