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carbon anode backfill use to produce an electrical pathway for current flow

 Types:petrolatum and metallurgical

High quality calcined petroleum coke is recommended for all deep anode installations. Granular carbon sinks readily in fresh water and is normally poured directly from the bag into the well. Fluid coke is comprised of fine carbon particles that compact tightly around anodes. Because of small particle size, fluid coke should be pumped from the bottom up using a pipe installed for this purpose. Fluid coke should normally be allowed to settle overnight and sounded prior to installation of inactive column.