Lignite

أ. الليجنيت ضرب من الفحم الحجرى

ألاسمالليجنيت ضرب من الفحم الحجرى
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الليجنيت

اسْم : اللّيجنيت وهو نوع من الفحم الحجري

The lowest rank of coal, often referred to as brown coal, used almost exclusively as fuel for steam-electric power generation. It is brownish-black and has a high inherent moisture content, sometimes as high as 45 percent The heat content of lignite ranges from 9 to 17 million Btu per ton on a moist, mineral-matter-free basis. The heat content of lignite consumed in the United States averages 13 million Btu per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).