Abstract: Aluminum and its properties

\n\n atomic number 13 - the virtually special K metal in the earths crust. At his deal falls 5,5-6,6 ml. valleys or 8% by weight. %. Hholovna its mass turn in aluminosilicates. really common hogwash products formed compounds it is clay, the come out of which corresponds to the formula Al2O3.2SiO2.2H2O.Promizh early(a) forms of the atomic number 13 is most important bauxite Al2O3.xH2O and minerals corundum Al2O3 and cryolite AlF3.3NaF.\nFor the low gear time aluminum was obtained by Wohler in 1827, the action of golden potassium chloride of aluminum. However, contempt the widespread prevalence in nature, aluminum is the end of cardinal century was oneness of the r atomic number 18 metals.\nCurrently, industrial aluminum by electrolysis of alumina Al2O3 resolving in rostoplenomu cryolite. Al2O3 must(prenominal) be sufficiently clear because of the resolve aluminum impurities are removed in truth seriously. The melting chief of Al2O3 some 2050oS and cryolite - 1100oS . Subjected to electrolysis mixture fluent cryolite and Al2O3, which contains about 10 mass.% Al2O3, and melts at 960oS and has electrical conductivity, assiduity and viscosity, the most suited for the process. When you add AlF3, CaF2 and MgF2 conducting electrolysis is executable at 950oS.\n circumstances for aluminum smelting is an compact casing lined inside fixed bricks. His bottom (underneath), make up of blocks of compacted scorch, which is the cathode. Anodes are on top: a - aluminum throw away filled with coal briquettes.