Petroleum Coke, Not Calcined

Green (uncalcined) petroleum coke is a carbon-rich solid by-product of crude oil refining, widely used as a fuel in cement kilns, power plants, and industrial boilers where its high calorific value offsets its elevated sulfur content. Because it has not undergone the high-temperature calcination process, it retains volatile matter and is not suitable as a direct anode material for aluminum smelting — that distinction drives the commercial separation from calcined coke. Canada is the leading US import supplier, with Germany, Brazil, and Mexico also among the top sources. Sulfur content and volatile-matter specifications are the primary quality parameters buyers negotiate.