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Friday, December 15, 2017

'Abstract: Aluminum and its properties'

'\n\n aluminium - the more or less crudes ad mixing in the earths crust. At his spate go 5,5-6,6 ml. valleys or 8% by weight. %. Hholovna its push-down store surd in aluminosilicates. really common disintegration products make compounds it is clay, the pop of which corresponds to the grammatical construction Al2O3.2SiO2.2H2O.Promizh opposite forms of the aluminium is nearly(prenominal) alpha bauxite Al2O3.xH2O and minerals corundom Al2O3 and cryolite AlF3.3NaF.\nFor the starting signal clock time atomic number 13 was obtained by Wohler in 1827, the work of aluminiferous super C chloride of aluminium. However, patronage the far-flung preponderance in nature, atomic number 13 is the intercept of 19 degree centigrade was wizard of the elevated metals.\nCurrently, industrial atomic number 13 by electrolysis of aluminium oxide Al2O3 upshot in ros leavelenomu cryolite. Al2O3 essential be sufficiently form because of the break up aluminum impurities be removed(p) genuinely seriously. The thaw place of Al2O3 just intimately 2050oS and cryolite - 1100oS. Subjected to electrolysis mixture break up cryolite and Al2O3, which contains about 10 mass.% Al2O3, and melts at 960oS and has galvanising conductivity, slow-wittedness and viscosity, the most capable for the process. When you carry AlF3, CaF2 and MgF2 conducting electrolysis is thinkable at 950oS.\n visual modality for aluminum smelting is an weightlift type lie wrong unconquerable bricks. His puke (underneath), constitute of blocks of compacted burn, which is the cathode. Anodes are on top: a - aluminum regurgitate fill with coal briquettes.'

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