GB/T 6730.4-1986 Methods for chemical analysis of iron ores--The stannous chloride-mercuric chloride-potassium dichromate volumetric method for the determination of total iron content
This standard applies to the determination of total iron in iron ore, iron concentrate, sinter and pellets. Measuring range: more than 20%.
GB/T 6730.4-1986 history
2022GB/T 6730.64-2022 Iron ores—Determination of water soluble chloride content—Ion-selective electrode method
2007GB/T 6730.64-2007 Iron ores.Determination of water soluble chloride content.Ion-selective electrode method
2006GB/T 6730.24-2006 Iron ores Determination of total rare earth contentd Chlorophosphonazo mA spectrophotometric method
2004GB/T 6730.54-2004 Iron ores-Determination of lead content-Flame atomic absorption spectrometric method
1986GB/T 6730.4-1986 Methods for chemical analysis of iron ores--The stannous chloride-mercuric chloride-potassium dichromate volumetric method for the determination of total iron content