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Diatomaceous earths and Perlites

Terres Diatomées et Perlites

Diatomaceous earth or kieselgur are fossil earths from marine algae, composed largely of silica.

There are three categories of diatoms:

  • Natural earths
  • Burnt earth
  • Sintered earths

Calcined and sintered diatomaceous earth is used according to its permeability and its category in the filtration and clarification of liquids such as:

  • Industrial water
  • Wines
  • Vegetable oils
  • Sugar syrup
  • Waxes
  • Glues
  • Sulphur
  • Any industrial liquid

These soils in their natural, non-calcined form are also used as a natural mechanical insecticide.

Perlite is a vitreous rock of volcanic origin composed mainly of silica and is also a filtration earth.

Physically, thermally treated and expanded, it is used according to its permeability for the filtration of all liquids, musts, aromas, oil dewaxing, wastewater treatment and in hydroponics (agriculture).