Global steel production is dependent on coal. 70% of the steel produced uses coal. Metallurgical coal – or coking coal – is a vital ingredient in the steel making process. World crude steel production was 1,870 million tonnes in 2019.
steel is an alloy based primarily on iron .As iron occurs only as iron oxides in the earth's crust,the ores must be converted,or reduced, using carbon.The primary source of this carbon is coking coal.
