to the minerals of tantalum and niobium in India. Importance of the Two Metals Tantalum and niobium were less familiar metals till recently and found only limited use. During the last few years, particularly in America, enormous work has been conduct-ed on the metals, their alloys and compounds. It has been reported in the U.S. recently1,2
History. Tantalum was discovered in Sweden in 1802 by Anders Ekeberg, in two mineral samples – one from Sweden and the other from Finland. One year earlier, Charles Hatchett had discovered columbium (now niobium), and in 1809 the English chemist William Hyde Wollaston compared its oxide, columbite with a density of 5.918 g/cm 3, to that of tantalum, tantalite with a density of 7.935 g/cm 3.
The concentrates are transported to the processors' works for chemical processing. Tantalum mineral concentrates may contain from two to more than five different tantalum-bearing minerals from the same mining area.The sale of tantalum mineral concentrates is based on a certified analysis for the tantalum oxide (Ta 2 O 5) they contain,with a .
Reduction to tantalum powder; Processing into bar, plate, sheet, rod, tube, and wire forms . Tantalum is often produced alongside niobium, which has very similar chemical properties and tends to appear in the same regional mineral deposits as tantalum.
The tantalum concentrate is transported to the processor for chemical processing. The concentrate is then treated with a mixture of hydrofluoric and sulphuric acids at high temperatures. This causes the tantalum and niobium to dissolve as fluorides. Numerous impurities are also dissolved.
•The AB Minerals technology is a complete, low cost redesign of how processing is done, something that hasn’t changed significantly in more than 60 years •To conform with the stricter environmental requirements of today, the Company has developed a safer and more efficient way to separate tantalum and niobium into high-purity products.
Tantalum is extensively used in products that require high reliability in extreme environments. The metal is commonly found in capacitors and super alloys that are applied in many electronics, automotive and aerospace products. More than half of the world’s tantalum is mined in Africa, including artisanal