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Green petroleum coke is generated by delayed coking during the conversion of crude oil into liquid fuels such as gasoline and jet fuels. Green coke quality is derived mainly from the quality of crude oil that a refinery consumes.

The quality of the coke determines its use. High sulfur coke is consumed as a solid fuel for its BTU content, competing with coal, while low sulfur, low impurity coke is upgraded through calcining for consumption as a critical raw material in the aluminum and steel industries.

Access to supplies of high quality green coke is essential to the success of Aminco’s carbon activities. This is particularly important as the oil industry refines substantially larger quantities of sour crude than in the past. This has dramatically changed the availability of high quality green coke in the traditional markets, particularly in the United States.