Iron ores. Determination of loss on ignition. Non-oxidised ores

Iron ores. Determination of loss on ignition. Non-oxidised ores

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1   Scope

This Technical Report describes a gravimetric method for the determination of the loss in mass of non–oxidized iron 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 ignition in natural iron ores, iron ore concentrates and agglomerates, and sinters.
The method is not applicable to the following:
  1. a) processed ores containing metallic iron (direct reduced iron);
  2. b) natural or processed ores in which the sulfur content is higher than a mass fraction of 0,2 %;
  3. c) internationally traded ores with combined water greater than 2,5 %.

NOTE 1 Loss on ignition can be used as an estimate of combined water.

NOTE 2 This method is intended for in-house use and is not intended for referee purposes.