Perlite is a special volcanic glassy rock type that is created by microscopic lamellar structures or fractures of a protrusion, which is a result of cooling in petrography. Perlite is also the name given to natural volcanic rock formations of silica basis.
In commercial use perlite, which is an acidic glass with natural formation of volcanic origins, achieves porosity and expands as it is heated to a certain temperature. When perlite is heated between 900-1100 °C in specific particle size, its volume expands to 20 times of its original and as it pops like popcorn, it becomes very lightweight. Due to its porosity perlite gains absorbency and surface cooling properties and as such is favored in areas of use where these properties are important.
Application: Thermal acoustical insulation ceiling tiles, lightweight concrete, plasters & mortar, horticulture applications, in food and chemical industry as a filter-aid, as a super insulating material (cryogenics & low temperature insulation), as a slag remover/coagulant in the steel and foundry industries, in textile processing industry as a fabric ageing material, for production of glass. In construction it enhances fire rating of the buildings and make them vermin & termite resistant.
Appearance: Gray granules
Size: 1-2.5mm, 0.8-2.5mm, 1.2–2.6mm, 0.043-0.6mm or as per customer’s requirements (with max particle size of 6mm).
Packing: 50Kg bags or 1000 – 1150Kgs big bags
Supply Ability: 4000MT/month
Bulk density: 1200-1400Kg/m3
pH: 6 – 7.5
Chemical Composition: Typical chemical composition of Perlite ore is: