B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
204/146, 204/49
B01D 53/12 (2006.01) B01D 53/26 (2006.01) C25C 3/22 (2006.01)
Patent
CA 1264523
ABSTRACT OF THE DISCLOSURE: The fumes emitted by electrolysis pots in the production of aluminum contain fluorinated products, alumina and various components of the electrolysis bath. The fumes may be purified and the products used again by sucking the fumes from a hole in the crust, kept constantly open by keeping the area surrounding the hole under suction. This is followed by contacting the fumes with alumina, and by reintroducing the products thus fixed and/or retained on the alumina directly back into the same pot from which they were emitted. Equipment for accomplishing this process, comprises a cap placed in contact with the crust in correspondence with the hole, a reactor of the fluidized bed type, or of the injection "Venturi" type, positioned in correspondence of the pot, in combination with a related filter and fan/exhauster.
536289
Robic Robic & Associes/associates
Techmo Car S.p.a.
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