FIELD: metallurgy.
SUBSTANCE: proposed line comprises dry cleaning unit including green alumina tray, vertical absorber connected via green alumina feed line with said tray and offgas feed assy, green alumina feed assy, used alumina feed assy, bag filter composed of filtration chamber and used alumina accumulation tray connected with fluorinated alumina tray. Dry cleaning unit connected with fluorinated alumina feed line and adsorber includes the system to discharge gases from filtration chamber, and system to discharge cleaned gases in atmosphere. Note here that said the line feeding green alumina from tray into adsorber and that to feed fluorinated alumina from tray into the system of centralised alumina feed to electrolytic cells represent airslide conveyors. Green alumina tray is equipped with compressed air aeration circuit.
EFFECT: lower costs, better cleaning.
3 cl, 1 dwg
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