ash
Definition
Alumina, iron, silica, and other noncombustible impurities contained in coal and left after its burning. Ash content is measured as a percent by weight of coal and negatively affects its value. See also fly ash.
ash is in the Environment & Pollution Control, Industries, Manufacturing, & Technology and Material & Occupational Safety subjects.
ash appears in the definition of the following term: incineration
ash appears in these other term: fly ash
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