flue dust

noun

Definition of flue dust

: finely divided metal or metallic compounds escaping with the flue gases of a smelter or metallurgical furnace broadly : such matter with accompanying fumes

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“Flue dust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flue%20dust. Accessed 31 Oct. 2020.

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