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See Chinese contents: GB/T 6730.83-2022 GB/T 6730.83-2022: Iron ores -- Determination of loss on ignition -- Gravimetric method corrected by hygroscopic water
This document specifies the method for the determination of loss on ignition in iron ores using gravimetric method corrected by hygroscopic water. This document is applicable to natural iron ores, iron concentrations and artificial lumpy iron ores, with a determination range (mass fraction) of: 1.0% ~ 10.0%. This document does not apply to the following circumstances: a) Processed iron ores containing metallic iron (direct reduced iron); b) Natural or processed iron ores with sulfur content exceeding 0.2%; c) Natural or processed iron ores with ferrous oxide content exceeding 1.0% (mass fraction).
