VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Fluorine bonding in dry scrubber in electrolysis of aluminium = Vezava fluora v čistilni napravi pri elektrolizi aluminija
    Paulin, Irena ...
    Pure aluminium is extracted by electrolysis of alumina (Al[sub]{2}O[sub]{3}) that is manufactured by treating bauxite. Primary aluminium is extracted by electrolysis from alumina according to the ... reaction: 2Al[sub]{2}O[sub]{3} + 3C[sub](graphite) --> 4Al + 3CO[sub]{2(g)}. The process, with additives cryolite, AlF[sub]3, CaF[sub]2 etc. into electrolyte, proceeds at the temperature below 1000 [compositum]C and at constant DC current of 180 kA. Electrolytic cells are connected in series in order to keep constant electrical current in all the electrolytic cells due to the Ohm's law. In electrolytic cells the direct undesired side effect of electrolysis is the production of greenhouse gases (CO, CO[sub]2) are products of the additives for the reduction of the temperature of the aluminum extraction process. The scrubbers operate by direct exhausting the flue gases from the electrolytic cells directly into reactors where gases react with active alumina. From the gas mixture first the poisonous fluorine and HF are adsorbed on the active surface. The gases with active alumina are then transported through bag filters where solid alumina with adsorbed gases is removed. The fluorine-enriched alumina is after the filtration used in the electrolytic process.
    Vir: Program in knjiga povzetkov = Program and book of abstracts (Str. 38)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2008
    Jezik - angleški, slovenski
    COBISS.SI-ID - 697002

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