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How is coal used to make steel?
Steel is an essential material for modern life and global steel production is dependent on coal – 70% of steel produced uses coal. Metallurgical coal 鈥?or coking coal 鈥?is a vital ingredient in the steel making process. Coking coal is converted to coke by driving off impurities to leave almost pure carbon. The coking coal is crushed and washed.
How much coal energy is needed for steel-making?
The energy value of the type of coal used for steelmaking is about 8 megawatt hours (MWh) per tonne. So each tonne of 鈥榥ew鈥?steel has typically required about 6 MWh in the process of getting from iron ore to a finished steel product, such as coil used for making the exteriors of cars. The coal energy needed for steel-making is therefore
Can steel be made without coal?
So, steel can be made without metallurgical coal. And green steel made from renewable-generated hydrogen may one day be affordable. Until then, lower-cost innovations such as HydroMOR can help bridge the gap between today鈥檚 use of metallurgical coal and tomorrows hydrogen future.
What is metallurgical coal?
Metallurgical coal, also called metcoal or coking coal, is a type of coal that is used in the production of steel. It is of a higher purity than thermal coal which is used in energy generation. To make steel, metcoal is heated at around 1100 degrees C to remove water and other chemicals.