| 摘要 |
1507276 Electrical contacts to carbon cathodes SOC DES ELECTRODES ET REFRACTAIRES SAVOIE 13 July 1976 [17 July 1975] 29131/76 Heading C7B Metal e.g. steel bars 15 for supplying current are joined to carbon blocks 10 containing grooves 11 or holes for receiving them, to form cathode elements of an electrolysis cell for Al production, by cast metal, each of the grooves or holes on which the bars are to be placed having one or more anchoring points located in the end zone of the block comprising depressions e.g. blind holes 12 to 14 or reliefs the shape of which is taken on by the cast metal when it is poured into the gap between the bars and the walls of the grooves or holes. Preferably the length of each bar is such that one end is located in the middle zone of the block where the groove or hole may be interrupted, to expand freely longitudinally within the groove or hole in an adequate space, preferably filled with carbon felt or powdered graphite. |
