Current busbar

Abstract

Current busbar for anode or cathode for use in production of aluminium from alumina in an electrolysis bath in an electrolysis cell, comprising ends or sections that during operation shall be within the electrode body are formed as horizontally oriented conical bodies and cylindrical or conical grooves with largest horizontal cross section dimension within said grooves, such that by sliding in correspondingly formed cooper rails on the external parts of the busbar, said bodies and rails are releasable joined.

1 . Current busbar for anode or cathode for use in production of aluminium from alumina in an electrolysis bath in an electrolysis cell, which current busbar comprises one or more ends or sections that during operation shall extend out of an electrode body, and one or more ends or sections that during operation shall be within the electrode body, wherein
 ends or sections that during operation shall be within the electrode body are formed as one or more in substance horizontally oriented conical bodies with largest horizontal cross section diameter within the electrode body, such that by sliding said bodies axially into one or more adapted conical holes in the electrode body said bodies will be embedded and kept into the electrode body, and   said conical bodies or elements connected thereto are manufactured from steel or steel over a copper core, and are provided with one or more in substance horizontally formed cylindrical or conical grooves with largest horizontal cross section dimension within said grooves, such that by sliding in correspondingly formed copper rails on the external parts of the busbar, said bodies and rails are releasably joined.   
   
   
       2 . Current busbar according to  claim 1 , wherein the cross section of the parts that are to be within the electrode body have form as a circle, triangle or quadrangle under or over a high and narrow rectangle, such that the largest horizontal dimension of the circle, triangle or quadrangle is at least four times larger than the horizontal dimension of the rectangle. 
   
   
       3 . Current busbar for anode or cathode for use in production of aluminium from alumina in an electrolysis bath in an electrolysis cell, which current busbar comprises one or more ends or sections that during operation shall extend out of an electrode body, and one or more ends or sections that during operation shall be within the electrode body, wherein
 ends or sections that during operation shall be within the electrode body are formed as one or more in substance horizontally oriented conical bodies with largest horizontal cross section diameter within the electrode body, such that by sliding said bodies axially into one or more adapted conical holes in the electrode body said bodies will be embedded and kept into the electrode body.   
   
   
       4 . Current busbar for anode or cathode for use in production of aluminium from alumina in an electrolysis bath in an electrolysis cell, which current busbar comprises one or more ends or sections that during operation shall extend out of an electrode body, and one or more ends or sections that during operation shall be within the electrode body, wherein
 the transfer between steel in parts of the current busbar that are to be within or close to the electrode body and copper in external parts from the electrode body are formed as one or more in substance horizontally formed cylindrical or conical grooves in the steel with largest horizontal cross section dimension within said grooves, and correspondingly formed copper rails on the external parts of the current busbar, such that by sliding in the copper rails into the steel grooves the parts will be releasably joined.   
   
   
       5 . Current busbar according to  claim 1 , wherein the current busbar is an anode hanger. 
   
   
       6 . Current busbar according to  claim 1 , wherein the current busbar is a cathode steel. 
   
   
       7 . Current busbars according to  claim 1 , wherein pure aluminium, aluminium alloy, copper or copper alloy is used as construction material in the parts furthest away from the electrode body and in a distance close to or within the electrode body, with a protective lining of steel for parts within or close to the electrode body. 
   
   
       8 . Electrode body, consisting of carbon and is provided with adapted grooves for mounting of current busbars according to  claim 1 . 
   
   
       9 . Electrode body according to  claim 8 , wherein the conical grooves in the electrode body is slightly longer than the conical bodies, such that said conical bodies will fit into said conical grooves even though they have been slightly worn-out. 
   
   
       10 . Electrode, comprising current busbars according to  claim 1  joined with electrode body according to  claim 8 .