Minerais de fer — Détermination de l'aire spécifique — Méthode d'essai utilisant un perméamètre (Blaine)

ISO 21283:2018 specifies a method to determine the fineness of iron ores in terms of specific surface area, using the manual Blaine air-permeability apparatus.

ISO 21283:2018 is applicable to pellet feeds in the range of 400 cm²/g to 2 500 cm²/g of specific surface area.