Coal coking coal, also known as high-temperature pyrolysis. Coal as raw material, in isolation from the air condition, heated to about 950 ℃, high temperature carbonization coke, while access to gas, coal tar and other chemical products recovered a coal conversion process. To ensure the quality of the product after Coal coking, coking coal choose the most basic requirement is volatile, bond and coking resistance; most of the coking coal washing must be to ensure the lowest possible ash, sulfur and phosphorus content.