ISO 4698:2022

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Iron ore pellets for blast furnace feedstocks - Determination of the free-swelling index

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ISO 4698:2022

Iron ore pellets for blast furnace feedstocks - Determination of the free-swelling index

PUBLISH DATE 2022
ISO 4698:2022

This document specifies a method to provide a *relative measure* for evaluating the increase in volume of iron ore pellets, when reduced in an unconstrained bed under conditions resembling those prevailing in the reduction zone of a blast furnace.

It specifies the determination of the free-swelling index.

This document is applicable to hot-bonded pellets.

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