Abstract:Low-grade manganese ores that are composed of manganese oxides, wad, quartz, iron oxides, gibbsite, and especially of spessartine (Mn 3 Al 2 (SiO 4) 3) are known as gondite. Spessartine is a mineral with a high content of silica (SiO 2) and alumina (Al 2 O 3) that causes a decrease of the enrichment in manganese oxide concentrates by flotation, giving this ore more complexity for processing. Thus, by ensuring a higher selectivity between manganese oxides minerals and silicates, the use of gondite reserves beco… Show more
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