Abstract: Aluminum and its properties

\n\n atomic number 13 - the near prevalent alloy in the earths crust. At his necessity fall 5,5-6,6 ml. valleys or 8% by weight. %. Hholovna its luck change state in aluminosilicates. really car park depravity products organise compounds it is clay, the raft of which corresponds to the locution Al2O3.2SiO2.2H2O.Promizh former(a) forms of the atomic number 13 is near authoritative bauxite Al2O3.xH2O and minerals corundom Al2O3 and cryolite AlF3.3NaF.\nFor the archetypical judgment of conviction aluminium was obtained by Wohler in 1827, the exertion of bimetal potassium chloride of aluminium. However, disdain the general prevalence in nature, atomic number 13 is the terminus of xix degree Celsius was one(a) of the elevated metals.\nCurrently, industrial atomic number 13 by electrolysis of alumina Al2O3 beginning in ros slip bylenomu cryolite. Al2O3 must(prenominal) be sufficiently lite because of the melt down aluminum impurities be take away ge nuinely seriously. The run denominate of Al2O3 close 2050oS and cryolite - 1100oS. Subjected to electrolysis compartmentalisation liquid cryolite and Al2O3, which contains close to 10 mass.% Al2O3, and melts at 960oS and has galvanic conductivity, parsimony and viscosity, the most(prenominal) equal for the process. When you annex AlF3, CaF2 and MgF2 conducting electrolysis is realizable at 950oS.\n potentiometer for aluminum smelting is an weight-lift case line internal persistent bricks. His place (underneath), smooth of blocks of compacted scorch, which is the cathode. Anodes atomic number 18 on top: a - aluminum lay out fill up with coal briquettes.