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Nickel Mining
A nickel mine is a mining, mine that produces nickel. Some mines produce nickel primarily, while some mines produce nickel as a side-product of some other metal that has a higher concentration in the ore. Geology Nickel occurs in two general types of ores, sulfides and oxides. The most important sulfide ore is pentlandite (Ni9S8) although many other nickel sulfides are known. Furthermore, nickel is often a constituent of iron sulfides such as pyrrhotite. The principal (i.e. economically most important) nickel oxides are nickeliferous limonite ((Fe1−xNix)O(OH)·nH2O). Pentlandite supplies an estimated 65% of the world's nickel but nickel laterites constitute the largest reserves. Extraction Nickel content of its ores is often only a few percent by weight. Sulfide ores are subjected to comminution followed by froth flotation. Pentlandite and related minerals separate with sulfides of copper, cobalt, and iron. Two Hydrometallurgy, hydrometallurgical methods have been develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel Mine At Hamn, Senja, Troms, Norway, 2014 August
Nickel is a chemical element; it has Chemical symbol, symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and Ductility, ductile transition metal. Pure nickel is chemically reactive, but large pieces are slow to react with air under Standard temperature and pressure, standard conditions because a Passivation (chemistry), passivation layer of Nickel(II) oxide, nickel oxide forms on the surface that prevents further corrosion. Even so, pure native metal, native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger iron meteorite, nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere. Meteoric iron, Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer core, Earth's outer a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
