Coke breeze is a carbonaceous backfill widely used to enhance the performances of impressed current groundbeds. Petroleum coke undergoes a thermal treatment process called “calcination” where it is heated at high temperatures in special ovens where most of the volatiles and the residual hydrocarbons are eliminated leaving a high-purity granular carbon. Thanks to its almost-metallic conductivity, calcined petroleum coke backfill surrounding the anodes allows anodic current to be discharged by a widely increased surface, lowering anodic resistance and anode’s consumption.

Depending on the type of groundbed to be backfilled, different types of coke breeze with increasing purity are available by Tecnocorr:

• Calcined coke breeze, grain size 1-4 mm;
• Calcined coke breeze, grain size 0-1 mm;