coal ash

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• coal ash — /ˈkoʊl æʃ/ (say kohl ash) noun the residue of the burning of coal, as in power plants, traditionally placed in landfill as waste, but now being reclaimed for use in the making of concrete and asphalt, and as construction fill …  

• Coal assay — Coal Analysis techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. These methods are used primarily to determine the suitability of coal for coking, power generation or for iron… …   Wikipedia

• Coal — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur …   Wikipedia

• Coal mining in Kentucky — Coal was discovered in Kentucky in 1750. Since the first commercial coal mine opened in 1820 coal has gained both economic importance and controversy regarding its environmental consequences. As of 2010 there are 442 operating coal mines in the… …   Wikipedia

• Coal combustion products — (CCPs) (also called coal combustion wastes (CCW)) are categorized in four groups, each based on physical and chemical forms derived from coal combustion methods and emission controls: Fly ash is captured after coal combustion by filters (bag… …   Wikipedia

• Coal Creek Station — is the largest power plant in the U.S. state of North Dakota. Located at 47°22′37″N 101°09′26″W / 47.37694°N 101.15722°W / 47.37694; 101.15722 …   Wikipedia

• Coal liquefaction — is the process of producing synthetic liquid fuels from coal. Contents 1 Methods 1.1 Pyrolysis and carbonization processes 1.2 Hydrogenation processes 1.3 …   Wikipedia

• coal utilization — Introduction        combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric power plants. Metallurgical coke… …   Universalium

• Ash —   The non combustible residue of a combusted substance composed primarily of alkali and metal oxides.   ***   Impurities consisting of silica, iron, alumina, and other noncombustible matter that are contained in coal. Ash increases the weight of… …   Energy terms

• Coal bed methane extraction — (CBM extraction) is a method for extracting methane from a coal deposit. Contents 1 Basic principles 2 Areas with coal bed methane extraction 3 Measuring the gas content of coal …   Wikipedia

• coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium