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BS PD ISO/TR 18230:2015 describes a gravimetric method for the determination of the loss in mass of nonoxidizediron ores, when ignited at 1 000 °C.

This method is applicable to a concentration range of a mass fraction of -3,0 % to 7,0 % loss on ignitionin natural iron ores, iron ore concentrates and agglomerates, and sinters.

The method is not applicable to the following:

• processed ores containing metallic iron (direct reduced iron);
• natural or processed ores in which the sulfur content is higher than a mass fraction of 0,2 %;
• internationally traded ores with combined water greater than 2,5 %.