Cathode blocks

Cathode blocks

The ENERGOPROM GROUP produces cathode blocks at the Novosibirsk Electrode Plant. The Novosibirsk Electrode Plant is well located: both close to suppliers (coke, pitch, and anthracite producers) and consumers (Russian aluminum factories). 

 

Typical properties of cathode blocks

PROPERTIESUNITSAMPLINGN-1N-2N-3N-4
Real density, min g/cm3 parallel 1,91 1,93 2,03 2,20
Apparent density, min g/cm3 parallel 1,56 1,59 1,6 1,62
Electrical Resistance, max μΩm parallel 35 27 20 12
Total porosity, max % parallel 19:5 19 21 30
Open porosity, max % parallel 15 14 17 24
Compressive strength, min MPa parallel 34 32 28 20
Bending strength, min MPa parallel 12 11 10 8
Elasticity modulus / max GPa perpendicular 11 10 8 7
Thermal conductivity ( 20°C), min W/mK parallel 10 14 22 97
Coefficient of thermal expansion  х10 -6 parallel 3,3 3,3 3,3 3,1
(interval of 20–520°C), max К-1          
Rapport test, max % perpendicular 0,7 0,5 0,4 0,2
Ash content, max % parallel 2,5 2 1,3 0,6


 

Variations of cathode block grades corresponding to pot amperages 

THE CHOICE OF CB DEPENDS ON CELLS AMPERAGEAMPERAGE
Amorphous GCA (N-1) 70–160 kА
Amorphous ECA (N-2) 70–240 kА
Graphitic (N-3) 240–350 kА
Graphitized (N-4) 240–500 kА