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EC number: 265-996-3
CAS number: 65996-65-8
The product of agglomerating iron ore fines, concentrates, iron sinter, and other iron-bearing materials. Includes pellets, nodules and briquettes.
The melting behaviour of iron pellets was inferred from reference data for pure di-iron trioxide, thermodynamic modelling studies on iron sinter andiron oxides and laboratory-scale experiments performed under the auspices of the ECSC research programme. These studies all indicate that incipient melting of iron pellets begins at >1000°C with complete melting taking place at temperatures >1300°C.
Iron pellets are composed essentially of di-iron trioxide with small
amounts of gangue constituents comprised of the oxides of calcium,
silicon, magnesium and aluminium. The product may thus be regarded as
di-iron trioxide with impurities and, consequently, the melting point of
pellets will differ from that of the pure oxide phase. The melting point
of pure di-iron trioxide is 1565°C and the other species present,
typically silicates and aluminosilicates, all have melting points
>1000°C. The methods for melting point determination listed in the ECHA
guidance are not applicable for substances with melting points > 1000°C
and therefore direct measurements of the melting point or, to be more
correct, the melting point range cannot be performed using the
recommended methods. Moreover, the melting point range of pellets is not
available from reference data sources.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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