| 摘要 |
<p>The invention relates to a partial protection cover for a porous tube or microporous hose (5) used for ventilation, said cover partially protecting against corrosion in electrolytic cells for metal production. The cover can consist of: a lower semi-cylindrical blanket (4) having two vertical side walls tangential at the point of intersection of the diametral plane; or an outer concentric tube (4) having longitudinal vertical incisions or longitudinal radial planar incisions which form a dihedral angle of 90 sexagesimal degrees, symmetrical with the longitudinal vertical plane of the tube or hose (5), said incisions being made in the upper zone of the protective cover.</p> |
