THERMAL DILATION OF GREEN ANODES DURING BAKING

Pilot scale anodes were made using three single source and one blended coke to determine how the green anode properties affect the final baked anode. Testing was performed in an improved vertical dilatometer using samples 50 mm in diameter and 50 mm long to determine the effect of different heating rates. No sample support was used, however the effect of packing material was evaluated. The sample shrinkage was calculated from the dilatometer data as the difference between the expansion at 550 °C and 950 °C. Dilatometric data for anodes prepared identically and with the same composition show differences due to varying mechanical properties of the cokes