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Classification of Nonferrous Metals

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Classification of Nonferrous Metals

Release date:2019-09-23 13:56 source:Original click:

  

 As we all know, data, information and power are the three pillars of modern civilization, and data are the foundation of all technological development. From industry to agriculture, military participation to civilian use, all kinds of non-ferrous metals are needed. Without non-ferrous metals of satisfactory quantity, complete variety and qualified quality, there will be no modernization of a country. China's non-ferrous metal industry has developed rapidly. The proven reserves of W, Sn, Sb, Ti, Zn, Ta, Nb, rare earth, Al, Ni, Gong, Mo and other non-ferrous metal ores rank among the top in the world, and the output value and types of non-ferrous metals rank among the top in the world.

1) Rare earth metals, including Sc, yttrium (Y) and lanthanum (La) series elements, 17: Sc, yttrium (Y), La, La, Sc, yyttrium (Y), La, CeCeCeCeCe, Pr, Pd, Nd, Pm, Pm, Sm, Sm, Eu, Eu, Gd, Gd, Gd, Gd, Gd, Tb, Tb, Dy Dy Dy, Ho Ho, ErErErErErErErErEr, HoHoHoHoHo, ErErErErErErErErErErErEr, ErErErErErErErErErErEr, HoHoHoHoHoHoHoHoHoHoHoHoHoHoHo, HoHoHoHo.thulium (Tm), ytterbium (Yb) and (Lu). From lanthanum to europium, they are light rare earths; from gadolinium to ruthenium, scandium and yttrium are heavy rare earths. In the 18th century, only rare earth oxides with alkali-like appearance (such as calcium oxide) were obtained, so the name "rare earth" has been used up to now. These metals have the same atomic structure, so their chemical properties are very similar. They are always associated with each other in ores. In the process of extraction, they need to be extracted and separated one by one through miscellaneous operations.

  (2) Rare radioactive metals. There are six kinds of natural radioactive elements: natural radioactive elements: Po, Ra, Ac, Th, Pa, U and 13 kinds of artificial transuranium elements: Scandium (Pr), Tc, Np, Pu, Am, Cm, Bk and Cf. Es, Fm, Md, No and Lw. Natural radioactive elements often exist together in ores, and they are often associated with rare earth metal ores. These metals play an important role in the atomic energy industry.

 

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