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diatomaceous earth

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.04 sec.
diatomaceous earth: see diatom diatom (dī`ətŏm', -tōm')
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diatomaceous earth

 or kieselguhr

Light-coloured, porous, and friable sedimentary rock composed of the frustrules (silicate cell walls) of diatoms. It is used in industrial filtration applications; as a filler or extender in paper, paint, brick, tile, ceramics, linoleum, plastic, soap, detergent, and other products; in insulation for boilers, blast furnaces, and other high-temperature devices; as a sound insulator; and as a carrier for herbicides and fungicides. The oldest and best-known commercial use is as a very mild abrasive in metal polishes and toothpaste. Large deposits occur in California, Nevada, Washington, and Oregon; other sources are Denmark, France, Russia, and Algeria.



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This article details a study to determine the affect of two refractories, diatomaceous earth and graphite, on thermal heat transfer.
Controlling heat transfer with refractory coating by Ramrattan, Sam N. / Modern Casting
Presentations will be included on many different types of fillers, from flash calcined clays, diatomaceous earths and perlites, aluminas, natural fibers, titanium oxides, mica, wollastonite, pigments and glass foam to nanographite, POSS and nanocomposites.
Rapra examines fillers for polymers by Rubber World
Chrysanthemum-derived pesticides, diatomaceous earth and boric acid are sold in garden centers.
Green, but clean: breaking the lawn-care pesticide cycle by Bradley, Jane M. / E
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