Cathode Boss Structure for Aluminum Electrolytic Cell

Abstract

A cathode boss structure for an aluminum electrolytic cell is disclosed. The cathode boss is arranged on the top surface of the cathode carbon block or on the top of the gap between two cathode carbon blocks. The distance between cathode bosses is 400 mm-900 mm. The length of the throughout elongate cathode boss is 100-250 mm longer than that of cathode carbon block, and two ends thereof are directly embedded into the paste around lateral portion. The length of the embedded and butted cathode boss is in a range of 3000-3200 mm, two ends thereof are fixed by binding carbon blocks respectively, and the binding carbon blocks are embedded into the paste around lateral portion. The cross-section of the cathode boss structure is in the shape of rectangle or isosceles trapezoid. The cathode boss structure is applicable to all types of current electrolytic cells. The strip boss is implanted into the top surface of the cathode of the electrolytic cell conveniently and quickly when the lateral portion of the common electrolytic cell is rammed, thereby forming a “choking effect”, reducing the flow rate of the aluminum liquid layer, decreasing energy dissipation from the aluminum liquid layer, therefore improving the production stability of the electrolytic cell and reducing energy consumption.

1 . A cathode boss structure for an aluminum electrolytic cell which includes cathode carbon blocks ( 1 ), characterized in that, a cathode boss ( 2 ) is arranged on the top surface of the cathode carbon blocks ( 1 ) or on the top of the gap ( 3 ) between two cathode carbon blocks ( 1 ). 
     
     
         2 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the distance between cathode bosses ( 2 ) is 400-900 mm. 
     
     
         3 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the cathode boss may utilize a throughout elongate structure, i,e, the throughout elongate cathode boss ( 2 ), the length thereof is 100-250 mm longer than that of cathode carbon block ( 1 ), and two ends thereof are directly embedded into the paste ( 5 ) around lateral portion. 
     
     
         4 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the cathode boss may also utilize an embedded and butted structure, i,e, the embedded and butted cathode boss ( 2 ), the length thereof is in a range of 3000-3200 mm, two ends thereof are fixed by binding carbon blocks ( 4 ) respectively, and the binding carbon blocks ( 4 ) are embedded into the paste ( 5 ) around lateral portion. 
     
     
         5 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the cross-section of the cathode boss ( 2 ) is in the shape of rectangle or isosceles trapezoid. 
     
     
         6 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the cathode boss ( 2 ) has a height (a) of 80-200 mm and a width (b) of 100-400 mm. 
     
     
         7 . The cathode boss structure for an aluminum electrolytic cell of  claim 1 , characterized in that, the material of the cathode boss ( 2 ) is graphitic carbon block or full graphitized carbon block.