How is Steel Produced? | World Coal AssociationMetallurgical coal – or coking coal – is a vital ingredient in the steel making process. . As iron occurs only as iron oxides in the earth's crust, the ores must be . The coking process takes place over long periods of time between 12-36 hours in.diffrent between coking coal and ground coal,Different Types of Coal | Introduction | underground COALThe main division is between "coking" coal and "energy or steaming" coal. Coking coals, used to make coke for use in blast furnaces, have particular properties.
diffrent between coking coal and ground coal