Explanation:
The coal found in India is manily of non-coking quality, and hence coking coal has to be imported. 70% of the steel produced today uses coal. Metallurgical coal – or coking coal – is a vital ingredient in the steel making process. Coking coal is converted to coke by driving off impurities to leave almost pure carbon. During the iron-making process, a blast furnace is fed with the iron ore, coke and small quantities of fluxes (minerals, such as limestone, which are used to collect impurities).
