GB 6730.51-1986 Method for chemical analysis of iron ore - Determination of carbon content in carbonate by caustic soda asbestos absorption gravimetric method (English Version)
2023GB/T 6730.51-2023 Iron ores—Determination of carbon content in carbonate—The caustic asbestos absorption gravimetric method
1986GB 6730.51-1986 Method for chemical analysis of iron ore - Determination of carbon content in carbonate by caustic soda asbestos absorption gravimetric method