1. Major imports include cement, clinker coal, cereals, grains, petroleum coke and fertilizers. 2. These refineries were producers of fuel, gasoline, kerosene, naphtha, oil, and petroleum coke . 3. There are other similar coking processes, but they do not produce petroleum coke . 4. The lower the sulfur, the better quality of calcined petroleum coke . 5. The plant was originally fueled by a pulverized coal and petroleum coke blend. 6. Fluidized bed combustion is commonly used to burn petroleum coke . 7. Petroleum coke may be stored in a pile near an oil refinery pending sale.8. 700, 000 tonnes of petroleum coke are produced each year. 9. For manufacturing of the graphitized anodes, anthracite and petroleum coke are calcined and classified. 10. The petroleum product the United States exports the most is petroleum coke , Patterson said.