Coke breeze

Coke breeze

Coke breeze is a carbon backfill which is used around impressed current anodes for underground cathodic protection applications.

It is used to:

• Reduce the resistivity of the environment surrounding the anode to increase the amount of current the anode can discharge

• Extend the anode surface area, thus increasing the amount of current the anode can discharge

• Reduce consumption of the anode since the carbon becomes the part of the anode consumed before the anode itself.

Particle size and shape are also important when specifying a backfill. Both parameters determine the contact area between anode and ground while influencing the porosity of the column, which is important for gas ventilation. A general-purpose coke breeze is for use in shallow horizontal and vertical ground-beds.

For deep well applications, a special calcined petroleum coke breeze is used.

 

Generally carbonaceous backfill material usually is one of the following types:

 

  • Type 1: Coal coke breeze
  • Type 2: Calcined petroleum coke breeze
  • Type 3: Special calcined petroleum coke breeze

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