For the beneficiation of tantalum niobium ores, gravity separation is generally used. An integrated process of gravity separation, flotation, electromagnetic separation, or beneficiation and metallurgy is employed for the beneficiation of tantalum niobium ores. The ore washing operation is crucial. Furthermore, high-efficiency grinding and classification equipment is used to reduce tantalum niobium sliming. Common collectors used in tantalum niobium flotation include fatty acids, arsonic acids, phosphonic acids, hydroxamic acids, cationic collectors, etc. The environmental pollution and reagent cost of collectors are very important factors.
1. Features of tantalum-niobium minerals.
Niobium tantalite, also known as niobium tantalite, has a general chemical formula of ab2o6, which is called niobium tantalite for short. Iron and manganese are in A, while niobium and tantalum are in B. Niobate tantalite has a magnetic susceptibility of (22.1 * 37.2) * 10-6*. Niobate has a dielectric constant of 10 * 12 and tantalite has a dielectric constant of 7 ~ 8. The mineral density is 5.15 ~ 8.20 (increasing as the tantalum content increases).
2. Technology for beneficiating tantalum niobium ore.
Gravity separation is generally used to beneficiate tantalum niobium ore. The gangue minerals are discarded first to obtain low-grade mixed coarse concentrate. The coarse concentrate entering the beneficiation operation has a complex mineral composition and generally contains a variety of useful minerals that are difficult to separate. Minerals can be separated using different beneficiation methods, such as gravity separation, flotation, electromagnetic separation, or a combined beneficiation and metallurgy process.
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