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Title: A geometallurgical comparison between lump ore and pellets of manganese ore.
Authors: Faria, Geraldo Lúcio de
Tenório, Jorge Alberto Soares
Jannotti Júnior, Nelson
Araujo, Fernando Gabriel da Silva
Keywords: Manganese lump ore
Issue Date: 2015
Citation: FARIA, G. L. de et al. A geometallurgical comparison between lump ore and pellets of manganese ore. International Journal of Mineral Processing, v. 137, p. 56-63, 2015. Disponível em: <>. Acesso em: 11 jul. 2016.
Abstract: Manganese lump ores are still the main rawmaterial used in the manufacture ofmanganese ferroalloys, but the processing of the ore to the beneficiation point generates fines. So an alternative to be studied is making pellets. Thiswork compares themain geometallurgical characteristics of the lump ore fromthe AzulMine and the pellets made from fines generated during beneficiation of this lump ore on a small scale. The characteristics assessed were: the chemical composition, mineralogical constitution, hot and cold particle disintegration, thermal decomposition and solid state reduction. It can be observed that the pellets contain a greater proportion of manganese oxides than the lump ore and they are also richer inMn. In the pellets the hot and cold particle disintegration phenomena are minimal when compared with those found in lump ore. Lump ore can be efficiently reduced in the solid state, while most of the manganese minerals in the pellets have already been reduced to MnO. The conclusion is that manufacturing pellets in order to take advantage of the manganese ore fines is a path that must be studied further, since the pellets can be used as a viable source of manganese and act as agents that contribute to the increase in permeability of the charge. But possible reductions in the temperature of the granular zone during solid state reduction need to be considered.
ISSN: 0301-7516
metadata.dc.rights.license: O periódico International Journal of Mineral Processing concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3914191440503.
Appears in Collections:DEMET - Artigos publicados em periódicos

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