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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
GB/T 24226-2009
Chromium ores and concentrates - Determination of calcium contents - Flame atomic absorption spectrometric method
GB/T 24224-2009
Chromium ores - Determination of sulfur content - Combustion-neutralization titration method, combustion-potassium iodate titration method and combustion-infrared absorption method
GB/T 24222-2009
Chromium ores - Determination of moisture of lots
GB/T 24205-2009
Iron ores fines - Method for presentation the results of sintering test
GB/T 24204-2009
Iron ores for blast furnace feedstocks - Determination of low-temperature reduction-disintegration indices by dynamic method
GB/T 24190-2009
Iron ores - Determination of combined water - Karl Fischer method
GB/T 24189-2009
Iron ores for blast furnace feedstocks - Determination of the reducibility by the final degree of reduction index