Petroleum coke
From Freepedia
Petroleum coke is a carbonaceous solid derived from oil refinery cracking processes. Petroleum coke has many uses as a fuel, in the manufacture of dry cells, electrodes, etc. On the other hand, needle coke (aka "acicular coke") is a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminum industries.
See also
- Official IUPAC definition of various forms of solid carbon.
