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Calcined Diatomaceous Earth vs. Non-Calcined: What Is the Difference?

calcination of diatomaceous earth

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3 responses

  1. Brent


    How long does natural DE need to be baked/ fired to become calcined?


    July 24, 2012 at 12:43 pm

    • Hi,

      I am not sure how long calcined DE is dried for. The major distinguishing factor is the temperature at which the product is dried. Calcined diatomaceous earth is treated at a temperature above 1000ºC (1832ºF) while non-calcined DE is treated at a very low temperature.

      Red Lake Food Grade Diatomaceous Earth is non-calcined and is dried for approximately 17 minutes at a low temperature, so as to preserve its natural qualities.

      July 25, 2012 at 8:32 am

  2. Pingback: “Pure” Diatomaceous Earth: Facts and Fiction « absorbentproductsltd

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