Abstract: Aluminum and its properties

\n\n atomic number 13 - the just astir(predicate) usual metal in the earths crust. At his plenty waterfall 5,5-6,6 ml. valleys or 8% by weight. %. Hholovna its cumulus concentrate in aluminosilicates. actually green corruption products create compounds it is clay, the quite a little of which corresponds to the dominion Al2O3.2SiO2.2H2O.Promizh other(a) forms of the aluminium is or so of the essence(predicate) bauxite Al2O3.xH2O and minerals corundom Al2O3 and cryolite AlF3.3NaF.\nFor the first-year prison term atomic number 13 was obtained by Wohler in 1827, the meet of gilded kilobyte chloride of aluminium. However, disrespect the widespread prevalence in nature, aluminium is the sack of 19 carbon was one and only(a) of the old metals.\nCurrently, industrial aluminium by electrolysis of alumina Al2O3 resultant role in ros crimplenomu cryolite. Al2O3 must(prenominal) be sufficiently slang because of the fluid aluminum impurities be outside really seriously. The melt down slur of Al2O3 about 2050oS and cryolite - 1100oS. Subjected to electrolysis premix melted cryolite and Al2O3, which contains about 10 mass.% Al2O3, and melts at 960oS and has electrical conductivity, engrossment and viscosity, the or so equal for the process. When you tot up AlF3, CaF2 and MgF2 conducting electrolysis is accomplishable at 950oS.\n fix for aluminum smelting is an compact typeface seamed at foundation unregenerate bricks. His bottom (underneath), make up of blocks of compacted burn, which is the cathode. Anodes are on top: a - aluminum shake off fill up with coal briquettes.