GB/T 27692-2024 Iron pellets for blast furnaces

GB/T 27692-2011 Acidity iron pellet for blast furnace

GB/T 6730.5-1986 Methods for chemical analysis of iron ores The titanium chloride-potassium dichromate volumetric method for the determination of total iron content GB/T 6730.5-2007 Iron ores—Determination of total iron content—Titanium(Ⅲ)chloride reduction methods GB/T 6730.5-2022 Iron ores—Determination of total iron content—Titrimetric methods after titanium(Ⅲ) chloride reduction GB/T 6730.9-1986 Methods for chemical analysis of iron ores The silicomolybdic blue photometric method for the determination of silicon content GB/T 6730.9-2006 Iron ores—Determination of silicon contents—The silicomolybdic blue spectrophotometric method reduce by ammonium ferrous sulfate GB/T 6730.9-2016 Iron ores—Determination of silicon content—Silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate GB/T 6730.10-1986 Methods for chemical analysis of iron ores The gralimetric method for the determination of silicon content GB/T 6730.10-2014 Iron ores—Determination of silicon content—Gravimetric methods GB/T 6730.13-1986 Methods for chemical analysis of iron ores The potassium permanganate volumetric method for the determination of calcium content GB/T 6730.13-2007 Iron ores—Determination of calcium and magnesium content—EGTA-CyDTA titrimetric method GB/T 6730.13-2025 Iron ores—Determination of calcium and magnesium content—EGTA-CyDTA titrimetric method GB/T 6730.14-1986 Methods for chemical analysis of iron ores The flame atomic absorption spectrophotometric method for the determination of calcium and magnesium content GB/T 6730.14-2017 Iron ores—Determination of calcium content—Flame atomic absorption spectrometric method GB/T 6730.16-1986 Methods for chemical analysis of iron ores The barium sulfate gravimetric method for the determination of sulfur content GB/T 6730.16-2016 Iron ores—Determination of sulfur content—Barium sulfate gravimetric method GB/T 6730.17-1986 Methods for chemical analysis of iron ores The eombustion iodometric method for the determination of sulfur content GB/T 6730.17-2014 Iron ores—Determination of sulfur content—Combustion iodometric method GB/T 6730.18-1986 Methods for chemical analysis of iron ores The n-butyl acetate extraction-molybdenum blue photometric method for the determination of phosphorus content GB/T 6730.18-2006 Iron ores—Determination of phosphorus content—Molybdenum blue spectrophotometric method GB/T 6730.19-1986 Methods for chemical analysis of iron ores The bismuth phosphomolybdate blue photometric method for the determination of phosphorus content GB/T 6730.19-2016 Iron ores—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method GB/T 6730.20-1986 Methods for the chemical analysis of iron ores The volumetric method for the determination of phosphorus content GB/T 6730.20-2016 Iron ores—Determination of phosphorus content—Titrimetric method GB/T 6730.61-2005 Iron ores—Determination of carbon and sulfur content—High frequency combustion with infrared absorption method GB/T 6730.61-2022 Iron ores—Determination of carbon and sulfur content—High frequency combustion with infrared absorption method GB/T 6730.62-2005 Iron ores—Determination of calcium,silicon,manganese,titanium,phosphorus magnesium,aluminium and barium content—Wavelength dispersive X-ray fluorescence spectrometric method GB/T 6730.63-2006 Iron ores—Determination of aluminum,calcium,magnesium,manganese,phosphorus,silicon and titanium content—Inductively coupled plasma atomic emission spectrometric method GB/T 6730.63-2024 Iron ores—Determination of aluminum,calcium,magnesium,manganese,phosphorus,silicon and titanium content—Inductively coupled plasma atomic emission spectrometric method GB/T 6730.65-2009 Iron ores—Determination of total iron content—Titanium(Ⅲ) chloride reduction potassium dichromate titration methods(routine methods) GB/T 6730.66-2009 Iron ores—Determination of total iron content—Automatic potentiometric titration method GB/T 6730.70-2013 Iron Ores—Determination of total iron content—Titrimetric method after tin(Ⅱ) chloride reduction GB/T 6730.73-2016 Iron ores—Determination of total iron content—EDTA photometric titration method GB/T 6730.73-2024 Iron ores—Determination of total iron content—EDTA photometric titration method GB/T 6730.74-2017 Iron ores—Determination of magnesium content—Flame atomic absorption spectrometric method GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 10322.1-2000 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2014 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2023 Iron ores—Sampling and sample preparation procedures GB/T 10322.7-2004 Iron ore—Determination of size distribution by sieving GB/T 10322.7-2016 Iron ores and direct reduced iron—Determination of size distribution by sieving GB/T 13240-1991 Iron ore pellets—Determination of relative free-swelling index GB/T 13240-2018 Iron ore pellets for blast furnace feedstocks—Determination of the free-swelling index GB/T 13241-1991 Iron ores—Determination of reducibility GB/T 13241-2017 Iron ores—Determination of reducibility GB/T 13242-1991 Iron ores—Low-temperature disintegration test—Method using cold tumbling after static reduction GB/T 13242-2017 Iron ores—Low-temperature disintegration test—Method using cold tumbling after static reduction GB/T 14201-1993 Iron ore pellets—Determination of crushing strength GB/T 14201-2018 Iron ore pellets for blast furnace and direct reduction feedstocks—Determination of the crushing strength GB/T 20565-2006 Iron ores and direct reduced iron—Vocabulary GB/T 20565-2022 Iron ores and direct reduced iron—Vocabulary GB/T 24531-2009 Iron ores for blast furnace and direct reduction feedstocks—Determination of the tumble and abrasion indices YB/T 5142