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  1. Lignite - Wikipedia

    • Lignite (derived from Latin lignum meaning 'wood'), often referred to as brown coal, is a soft, brown, combustible sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35% and is considered the lowest rank of coal due to its relatively low heat content. When removed from the ground, it contains a very high amount of moisture, wh… 展开

    Characteristics

    Lignite is brownish-black in color and has a carbon content of 60–70 percent on a dry ash-free basis. However, its
    The … 展开

    Uses

    Most lignite is used to generate electricity. However, small amounts are used in agriculture, in industry, and even, as jet, in jewelry. Its historical use as fuel for home heating has continuously declined and is now of lower imp… 展开

    Geology

    Lignite begins as partially decayed plant material, or peat. Peat tends to accumulate in areas with high moisture, slow land subsidence, and no disturbance by rivers or oceans – under these conditions, the area remains saturate… 展开

    Extraction

    Lignite is often found in thick beds located near the surface. These are inexpensive to extract using various forms of surface mining, though this can result in serious environmental damage. Regulations in the United States an… 展开

    Resources and reserves

    The Latrobe Valley in Victoria, Australia, contains estimated reserves of some 65 billion tonnes of brown coal. The deposit is equivalent to 25 percent of known world reserves. The coal seams are up to 98 m (322 ft) thick, wit… 展开

    Types

    Lignite can be separated into two types: xyloid lignite or fossil wood, and compact lignite or perfect lignite.
    Although xyloid lignite may sometimes have the tenacity and the appearance of ordinary wood, it can be s… 展开

     
  1. Brown coal

    Lignite (derived from Latin lignum meaning 'wood'), often referred to as brown coal, [1] is a soft, brown, combustible sedimentary rock formed from naturally compressed peat.
    en.wikipedia.org/wiki/Lignite
    en.wikipedia.org/wiki/Lignite
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  2. 褐煤 - 百度百科

  3. What are the types of coal? | U.S. Geological Survey - USGS.gov

  4. Lignite Coal, Kentucky Geological Survey, University of …

    2023年1月5日 · Learn about lignite, the lowest rank of coals, and its physical and chemical changes during coalification. Find out how lignite is defined, classified, and used in the U.S. and other countries.

  5. Lignite | Uses, Formation, Properties | Britannica

  6. Lignite - an overview | ScienceDirect Topics

  7. What is Lignite? - ThoughtCo

    2020年1月29日 · Lignite is a soft brown coal that provides low-cost energy for electricity and fertilizer production. Learn about its characteristics, availability, global production, and uses in the U.S.