GB/T 6730.3-1986 Methods for chemical analysis of iron ores--The gravimetric method for the determination of hygroscopic moisture content in analytical samples (English Version)
This standard applies to iron ore, iron concentrate, sinter and pellets containing metallic iron (direct reduced iron); sulfur content greater than 0.2% (m/m), or bound water greater than 2.5% (m/ m) of the sample, and its measured component analysis value calculated on the basis of the dry sample is greater than 10% (m/m), the determination of its moisture absorption.
GB/T 6730.3-1986 history
2017GB/T 6730.3-2017 Iron ores—Determination of hygroscopic moisture in analytical samples—Gravimetric, Karl Fischer and mass-loss methods
1986GB/T 6730.3-1986 Methods for chemical analysis of iron ores--The gravimetric method for the determination of hygroscopic moisture content in analytical samples