enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Ash (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Ash_(chemistry)

    A crucible and tongs, on a green mat. The ash content of a sample is a measure of the amount of inorganic noncombustible material it contains. The residues after a sample is completely burnt - in contrast to the ash remaining after incomplete combustion - typically consist of oxides of the inorganic elements present in the original sample.

  3. Ash - Wikipedia

    en.wikipedia.org/wiki/Ash

    Ash is the solid remnants of fires. [1] Specifically, ash refers to all non- aqueous , non- gaseous residues that remain after something burns . In analytical chemistry , to analyse the mineral and metal content of chemical samples , ash is the non- gaseous , non- liquid residue after complete combustion.

  4. Coal analysis - Wikipedia

    en.wikipedia.org/wiki/Coal_analysis

    This removes high-ash value particle and increases the saleability of the coal as well as its energy content per unit volume. Thus, coals must be subjected to a float-sink test in the laboratory, which will determine the optimum particle size for washing, the density of the wash liquid required to remove the maximum ash value with the minimum work.

  5. Wood ash - Wikipedia

    en.wikipedia.org/wiki/Wood_ash

    Wood ash is the powdery residue remaining after the combustion of wood, such as burning wood in a fireplace, bonfire, or an industrial power plant. It is largely composed of calcium compounds, along with other non-combustible trace elements present in the wood, and has been used for many purposes throughout history.

  6. Loss on ignition - Wikipedia

    en.wikipedia.org/wiki/Loss_on_ignition

    For example, the loss on ignition of fly ash is composed of contaminants and unburnt fuel. In pyroprocessing industries such as lime,calcined bauxite, refractories or cement manufacture, the loss on ignition of the raw material is roughly equivalent to the mass loss it will experience in a kiln. Likewise, in minerals, the loss on ignition ...

  7. Heat of combustion - Wikipedia

    en.wikipedia.org/wiki/Heat_of_combustion

    Since the heat of combustion of these elements is known, the heating value can be calculated using Dulong's Formula: HHV [kJ/g]= 33.87m C + 122.3(m H - m O ÷ 8) + 9.4m S. where m C, m H, m O, m N, and m S are the contents of carbon, hydrogen, oxygen, nitrogen, and sulfur on any (wet, dry or ash free) basis, respectively. [8]

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Lignite - Wikipedia

    en.wikipedia.org/wiki/Lignite

    Lignite mining, western North Dakota, US (c. 1945). Lignite is brownish-black in color and has a carbon content of 60–70 percent on a dry ash-free basis. However, its inherent moisture content is sometimes as high as 75 percent [1] and its ash content ranges from 6–19 percent, compared with 6–12 percent for bituminous coal. [5]