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coal process in south africa

The importance of coal | Statistics South Africa The importance of coal. Calls to decrease the world's dependence on coal as an energy source are well intentioned. Lower use would reduce greenhouse gas emissions, and less demand would lower the environmental risk of coal mining. Underground coal gasifiion Underground coal gasifiion (UCG) is an industrial process which converts coal into product gas. UCG is an in-situ gasifiion process carried out in non-mined coal seams using injection of oxidants, and bringing the product gas to surface through production wells drilled from the surface.. The predominant product gases are methane, hydrogen, . Coal Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure.Coal is composed primarily of carbon, along with .    Read More

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