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What Is The Highest Rank Of Coal

Anthracite is a highrank coal, representing a coal that has been subjected to the highest grade of metamorphismthracite is shiny black, hard and brittle see figure 2 and has the highest fixedcarbon content approximately 8698e to its low volatile matter 212, anthracites combustion process is slowost anthracites have lowmoisture content about 36 and their.