Petroleum coke is a final product, carbon-rich solid material that derives from oil refining and is one type of the group of fuels referred to as cokes. Petroleum coke is the coke that is mainly derived from a final cracking. Coke is the "carbonization product of high-boiling hydrocarbon fractions obtained in petroleum processing."
Calcined petroleum coke is the product that is formed from calcining petroleum coke. This coke is made from the Coker unit in a crude oil refinery. This calcined petroleum coke is suggested to make anodes for the aluminum, steel, and titanium casting industry, as the green coke has a sufficiently low metal content required to be used as anode material. Green coke with low metal content is known as anode-grade coke. But when green coke has excessive metal content, it is not calcined; instead, it is used as fuel-grade coke in furnaces.
Calcination is a process that is conducted at high temperatures. It is used for converting the physical properties of crude oil coke. Calcined petroleum coke is an essential material used in aluminum production. It is done by placing high-quality crude green oil coke in rotary furnaces, heating it up to high temperatures to eliminate the excess moisture, extracting remaining hydrocarbons, and modifying the crystalline structure of coke. Which is then exported by China Calcined Petroleum Coke Exporters to various parts of the world.
Calcined petroleum is also used in cathodic and ground-electric protection for underground construction, for the packaging of materials for anodes during the sintering process, carbon risers used by the steel industry, and steel recycling electrodes.