This part of GB/T 6730 specifies the determination of metallic iron content by sulfosalicylic acid spectrophotometry. This section applies to the determination of metallic iron content in iron ore, iron concentrate, sinter and pellets. Measuring range (mass fraction): 0.020%~0.300%.
GB/T 6730.7-2016 Referenced Document
GB/T 10322.1 Iron ore sampling and sample preparation methods*, 2023-08-06 Update
GB/T 12808 Laboratory glass instrument single marked line pipette
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 6730.1 Iron ores.Preparation of predried test samples for chemical analysis
GB/T 6730.3 Iron ores—Determination of hygroscopic moisture in analytical samples—Gravimetric, Karl Fischer and mass-loss methods*, 2017-10-14 Update
GB/T 7729 Chemical analysis of metallurgical products—General rule for spectrophotometric methods*, 2021-08-20 Update
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 6730.7-2016 history
2016GB/T 6730.7-2016 Iron ores.Determination of metallic iron content.Sulfosalicylic acid spectrophotometric method
1986GB/T 6730.7-1986 Methods for chemical analysis of iron ores--The sulfosalicylic acid photometric method for the determination of metallic iron content