About 80% of the world's copperfromore originates in CuFeS ores, such as chalcopyrite (CuFeS2) and chalcocite (Cu2S). The concentration of these minerals in an ore body is low. Typical copper ores contain from % Cu (open pit mines) to 1 or 2% Cu (underground mines).
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In this paper, solvent extraction technology for the separation and purification of niobium and tantalum has been extensively reviewed. Although a variety of solvents have been investigated for niobium and tantalum solvent extraction, only four have been commercially used in the production of niobium and tantalum from their raw materials.
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CHEMICAL ANALYSIS AND MINERALOGY Since 1982, the dramatic increase in demand for tantalum has been fueled at a rate of 10% per year by the electronics industry (Roskill Information Services). This makes tantalum a high value, high tech metal, but it is characterized by a refractory nature, low natural abundance, extensive solid solution, few known
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Tantalum comes from the processing and refining of tantalite. Tantalite is the common name for any mineral ore containing tantalum. Most tantalum mines are open pit; some are underground. The process of mining tantalum involves blasting, crushing and transporting the resulting ore to begin the process of freeing the tantalum.
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Apr 20, 2016· In 2000, Australia produced around 45% of the world's tantalum concentrates (tantalumcontaining minerals), but by 2014 this dropped to just 4%. The substantial decrease was a result of high extraction and an unfavourable exchange rate, which meant that .
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Tantalum is used in nickel based superalloys where the principal applications are turbine blades for aircraft engines and land based gas turbines. Chemical processing equipment Tantalum's high resistance to corrosion and high temperature makes the metal an ideal material of construction for liners in vessels, piping, valves and heat exchangers in the chemical and pharmaceutical industries.
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Columbite concentrates and tin slags with a high tantalum content (greater than 10 percent) are directly dressed in most cases by a wet chemical process. Lowtantalum tin slags, on the other hand, are first melted in an electricarc furnace with the addition of a flux material, and the tantalumniobium content is collected as a ferroalloy. The tantalumrich ore or ferroalloy is then crushed, ground, and decomposed .
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