Our high density graphitised cathode blocks are products of consistent and high quality – providing the basis for long pot life and stable operation.
- Abrasion and wear resistant carbon structure. Low open porosity and low permeability – reduced wear and longer pot life
- High thermal shock resistance – less risk of cracking during collector bar casting
- Optimal coefficient of thermal expansion – reduced risk of metal infiltration in the rammed seam
- Low electrical resistivity – saves energy
Cathode blocks are critical materials for production of primary aluminium. The blocks must withstand the combined effects of high temperatures and a tough electrochemical environment. Early pot failures due to crack formation or shortened pot life due to extensive cathode wear may seriously impact smelter economics.