组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
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GB/T 24519-2009
Manganese ores - Determination of magnesium, aluminum, silicon, phosphorus, sulfur, potassium, calcium, titanium, manganese, iron, nickel, copper, zinc, barium and lead content - Wavelength dispersive X-ray fluorescence spectrometric method
GB/T 10322.8-2009
Iron ores - Single-point determination of specific surface area - Nitrogen adsorption method
GB/T 24243-2009
Chromium ores - Increment sampling
GB/T 24241-2009
Direct reduced iron - Determination of the tumble and abrasion indices of hot briquetted iron(HBI)
GB/T 24240-2009
Direct reduced iron - Determination of apparent density and water absorption of hot briquetted iron (HBI)
GB/T 24239-2009
Direct reduced iron and hot briquetted iron - Sampling and sample preparation
GB/T 24237-2009
Iron ore pellets for shaft direct-reduction feedstocks - Determination of the clustering index
GB/T 24236-2009
Iron ores for shaft direct-reduction feedstocks - Determination of the reducibility index, final degree of reduction and degree of metallization
GB/T 24235-2009
Iron ores for shaft direct-reduction feedstocks - Determination of the low temperature reduction-disintegration index and degree of metallization
GB/T 24233-2009
Manganese and chromium ores - Experimental methods for evaluation of quality variation and methods for checking the precision of sampling
GB/T 24232-2009
Manganese and chromium ores - Experimental methods for checking the bias of sampling and sample preparation
GB/T 24230-2009
Chromium ores and concentrates - Determination of chromium content - Titrimetric method
GB/T 24229-2009
Chromium ores and concentrates - Determination of aluminium content - Complexometric method
GB/T 24228-2009
Chromium ores and concentrates - Methods of chemical analysis - General instruction
GB/T 24227-2009
Chromium ores and concentrates - Determination of silicon content - Spectrophotometric method and gravimetric method
GB/T 24225-2009
Chromium ores - Determination of total iron content - Titrimetric method after reduction
GB/T 24223-2009
Chromium ores - Determination of phosphorus content - Reduced molybdophosphate photometric method
GB/T 24221-2009
Chromium ores - Determination of calcium and magnesium contents - EDTA titrimetric method
GB/T 24220-2009
Chromium ores - Determination of hygroscopic moisture content in analytical samples - Gravimetric method
GB/T 24231-2009
Chrome ores - Determination of magnesium, aluminum, silicon, calcium, titanium, vanadium, chrome, manganese, iron and nickel content - Wavelength dispersive X-ray fluorescence spectrometric method