Data di Pubblicazione:
2014
Citazione:
Magnetic enrichment of braunite-rich manganese ore at different grain sizes / G. Grieco, S. Kastrati, M. Pedrotti. - In: MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW. - ISSN 0882-7508. - 35:4(2014 Mar), pp. 257-265.
Abstract:
Metamorphism of primary manganese deposits changes the oxi-hydroxide assemblage into a
braunite-rich paragenesis. Braunite magnetic properties, together with the increase in grain
size during metamorphism, can allow magnetic enrichment at gravel-sand grain size. Samples
were collected from a manganese deposit in the Eskis¸ehir region of Turkey, where a
metamorphic event changed mineralogy from an original Manganese (Mn) oxi-hydroxide
and chert assemblage to a braunite-rich quartzite and also showed an increase in grain size
as a result of metamorphism. These samples were first crushed to a fine grain size and braunite
was collected using a magnetic separator. Results show that metamorphic braunite-rich
manganese deposits can be successfully enriched at high Mn recovery with the best results
in the þ1–10mm grain size range.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
magnetic separation; manganese; mineral processing; oxide ores
Elenco autori:
G. Grieco, S. Kastrati, M. Pedrotti
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