The oxidation behavior of unactivated and mechanically activated sphalerite

Metallurgical and Materials Transactions | December 1, 2002| | Copyright

The oxidation behaviors of unactivated and mechanically activated sphalerites were investigated using the thermogravimetry method (TG) in flowing highly pure oxygen at the heating rate of 10 K min-'. It is found that the remaining mass between 400 and 873 K in the TG curves of mechanically activated sphalerites rises with increasing grinding time. The difference in oxidation reactivity of unactivated and mechanically activated sphalerites was also discussed. The specific granulometric surface area (S^sub G^), the structural disorder, and the content of elemental sulfur of unactivated and ...

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