DEVICE FOR SUCKING GASEOUS EFFLUENTS FROM A TANK FOR THE INDUSTRIAL PRODUCTION OF ALUMINIUM BY MEANS OF FUSED-SALT ELECTROLYSIS

摘要

The invention relates to a facility for sucking gaseous effluents originating from a tank for the industrial production of aluminium by means of fused-salt electrolysis, and directed towards a collector connected to a gas treatment centre, allowing the suction flow rate to be locally increased when at least one cover is temporarily removed during an intervention on the tank, by means of suction openings locally positioned in the area of the cover, each of said suction openings being obstructed when the cover in question is in place on the tank and opened when the cover is removed.