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See Chinese contents: GB/T 6730.11-2007 GB/T 6730.11-2007: Iron ores -- Determination of aluminium content -- EDTA titrimetric method
This Part of GB/T 6730 specifies the determination of aluminum content by EDTA titration. This Part applies to the determination of aluminum content, in natural iron ore, iron concentrate, sinter and pellets; the determination range (mass fraction) is 0.25% ~ 5.0%.
