Australian coal: will Asia's thirst for steel guarantee ...
It takes around 770kg of coking coal to make just one tonne of steel. Metallurgical coal is of a higher grade, and as such is rarer and more expensive than its more infamous cousin. "Coke is produced by heating coking coal in a coke oven in the absence of oxygen," the report explains. "Coke is then charged into a blast furnace to provide fuel and to help convert iron ore into liquid iron. Coke strength is critical .