fire sand


: a highly refractory sand that consists mainly of coarse quartz grains with alumina or clayey sand and that is used especially for foundry purposes
: a grayish green powder or granular refractory material obtained as a by-product in the manufacture of silicon carbide

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Dictionary Entries Near fire sand

Cite this Entry

“Fire sand.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2024.

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