fly ash

American  

noun

1. fine particles of ash of a solid fuel carried out of the flue of a furnace with the waste gases produced during combustion.

2. such ash recovered from the waste gases, used chiefly as a reinforcing agent in the manufacture of bricks, concrete, etc.

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fly ash British  

noun

1. fine solid particles of ash carried into the air during combustion, esp the combustion of pulverized fuel in power stations

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Etymology

Origin of fly ash

First recorded in 1930–35

Example Sentences

They become concentrated in fly ash, some of which escapes through the chimneys of coal-burning plants.

From Literature

In fact, the heaps of fly ash waste produced by coal-processing power plants are often just as — if not more radioactive — than nuclear waste sites.

From Salon

Large concrete beam prototypes have been created using both fly ash and pond ash and shown to meet Australian Standards for engineering performance and environmental requirements.

From Science Daily

Industry has been trying to find a use for materials like fly ash that predominantly end up in landfills, she explains.

From Science Daily

The Tour lab has used Flash Joule heating for a variety of applications, including hybrid carbon nanomaterials synthesis, battery part recycling and heavy metal removal from coal fly ash.

From Science Daily