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The Perlite is a mineral formed by sodium silicate and aluminum potassium of volcanic origin. It is formed when the quick cooling of the volcanic ashes, retains the water molecules inside the mineral.

When the perlite is heated quickly up to temperatures from 800 to 950º, it expands (expanded perlite) until 20 times its original size, forming expanded perlite with a extremely low density. It is essentially a mass of small glass bubbles, which give it the insulating properties for which it is known.


  • Reception Hopper of the perlite mineral.

  • Screw conveyor installed in the bottom of the hopper, for discharging it.

  • Magnetic Drum destined to retain the iron particles that the perlite mineral carries.

  • Bucket elevator to lift the perlite to the Prefeeding Hopper.

  • Prefeeding Hopper destined to storage the perlite that feeds the kiln, by using a belt conveyor.

  • Kiln to produce the expanded perlite, formed by 1 tube where the expansion is done and an outer shield.

  • Natural gas burner to provide the neccesary thermal energy to expand the perlite with its corresponding fan, to provide the combustión primary air.

  • Thermal Power: 1.000.000 to 2.000.000 kcal/h.

  • Cyclone to collect part of the expanded perlite from the kiln, with a valve rotative for discharging and the pipe from the kiln to the inlet.

  • Reception Hopper of expanded perlite made of stainless steel.

  • A bag filter to capture the particles not retained by the cyclone, with a valve rotative for discharging, and a fan that circulates the gases in all the whole circuit. 


NOTE:  Measures A,B and C can be adjusted to customer needs.