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- W4773764 abstract "This chapter discusses flotation and beneficiation of tantalum/niobium ores. There is very little information or literature on flotation properties of tantalum minerals. Also, there are only a few operating plants that treat tantalum ore by flotation. Most of the commercial plants use a gravity beneficiation method. Direct flotation of Ta/Nb from mainly tantalum-containing ore is not practiced in operating plants. Only a few currently operating plants have tested the possibility of using flotation to recover tantalum from gravity tailings. The principal method for beneficiation of Ta/Nb ores is gravity concentration. In principle, most of the Ta/Nb ores contain low-specific-gravity minerals of about 2.8–3.0 specific gravity (SG) (quartz, calcite, aluminosilicates, feldspar, etc.), whereas heavy minerals (Ta/Nb and other Ta/Nb mineral carriers) have SGs of 4–4.4, which is suitable for gravity preconcentration. The tantalum is mainly associated with columbite. The major gangue minerals present in this ore were soda and potassium feldspars with small amounts of mica and quartz. Beneficiation of this ore using cationic flotation, normally employed for flotation of niobium, was not applicable for this particular ore, since most of the mica and feldspar floated with the niobium and tantalum. The selectivity between Ta/Nb and gangue minerals using a cationic collector was very poor." @default.
- W4773764 created "2016-06-24" @default.
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- W4773764 date "2010-01-01" @default.
- W4773764 modified "2023-10-06" @default.
- W4773764 title "Flotation of Tantalum/Niobium Ores" @default.
- W4773764 doi "https://doi.org/10.1016/b978-0-444-53082-0.00023-8" @default.
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