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Brown Coal Material

coal types of coal peat lignite bituminous coal,jan 25, 2016 in time, material that had been plants became coal. coals are classified into three main ranks, or types lignite, bituminous coal, and anthracite. these classifications are based on the amount of carbon, oxygen, and hydrogen present in the coal. coals other constituents include hydrogen, oxygen, nitrogen, ash, and sulfur..the types of coal composition usage and energy value,sep 01, 2021 soft coal is also known as brown coal or lignite. china produces more hard coal than any other country by a factor of about three. the whopping 3,162 million metric tons of hard coal produced by china dwarfs the output of the second and third-ranked producersthe u.s. at 932 million metric tons and india at 538 million metric tons..

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