The effect of feed coal particle size on strength of briquette is discussed when different briquetting process and rank of coalification coal are adopted.

阐述了采用不同成型工艺和使用不同变质程度煤成型时，原料煤粒度对型煤强度的影响。

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With the rise of the coal rank, the crystallinity of kaolinite and its order in the anthracite bed go up.

随着煤变质程度的升高，煤层夹矸中高岭石的结晶度、有序度也随之升高。

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Enrichment and accumulation of coalbed methane in low rank coal have their own unique characteristics.

低煤阶煤层气富集成藏具有自身独特的特点。

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Today (July 14), Peabody announced a deal with the Xinjiang Uyghur Autonomous Region of China to develop a 50 million ton per year surface mine a giant project that would rank as one of the biggest coal mines in the world.

FORBES: Peabody Coal Is On Fire With New Deals

GuruFocus rated Arch Coal Inc the business predictability rank of 3.5-star.

FORBES: Markel's Gayner Buys Alliance Holdings, Moody's, Norfolk Southern, Sells Sysco, Vodafone