Perlite is not a brand name but a generic term for a naturally occurring siliceous rock. Perlite is distinguishable from other volcanic glasses when heat it to a suitable point, it expands from four to twenty times its original volume. This expansion is due to the presence combined water in the crude perlite rock. When quickly heated to above 1600 degrees F (871 degrees C), the crude rock expands in a manner similar to popcorn as the combined water vaporizes and creates countless tiny bubbles that account for the amazing light weight and other exceptional physical properties of expanded perlite. The expanded perlite's most distinguishing characteristics:is its white color. While the crude rock may range from transparent light gray to glossy black, the color of expanded perlite ranges from snowy white to grayish white. Expanded perlite can be manufactured to weigh to as light as 2 pounds per cubic foot (32 kg/m3) making it adaptable for numerous applications. Since perlite is a form of natural glass, it is classified as chemically inert and has a pH of approximately 7.
Chemical CompositionUnitResultsChemical Composition / RatiUnitResults
Si02 (Silisium Oxide)%74,330Rb20 ( Rubidium Oxide)%0,0151
Al203 (Aluminium Oxide)%13,190ZnO ( Zinc Oxide)%0,0151
Fe203 (Iron Oxide)%1,1500Na20 ( Sodium Oxide)%1,7700
CaO (Calcium Oxide)%0,8319NiO [ Nickel Oxide)%0,0019
MgO (Magnesium Oxide)%0,1360K20( Potassium Oxide) %4,4670
Cr203 (Chrome Oxide)%0,0194 CuO (Copper Oxide)%0,0065
MnO (Manganese Oxide%0,0735P205 ( Phosphorus Oxide )%0,0120
S03 (Sulfur)%0,0765 L.0.1%3,51
Ti02 (Titanium Oxide)%0,1334
V205 ( Vanadium Oxide)%0,0016
crude process ore
uses
Sand blasting, foundry and steel industries, slag coagulant, special casting sand and mixtures, silica source
Expanded perlite
uses
detail
İnsulation at ambient & low temperatureFire and thermal insulation
Roofdecking, concrete floor fill, blocks, chimney lining, bitumized perlite, perlite asphaltCore filler in wallboards, cavity wall insulations, doorsRefrigeration plants,portable iceboxes,containers
Medium to high temperature insulationBoiler covering in quiltered mattresses and in hardsetting composition. Pipe covering in coaxial tubes and in compression modeled pipe half section
High temperature insulationFire insulation in safes, rooms, etc. foundry molds to reduce shrinkage. Holding heat in molten metal during delay in pouring. Exothermic topping.
Filtration
Filter coat on pressure and rotary vacume filters
SlowMediumFast
Beer,wine, hydrogenated vegetable oilCitric acid, sugar, oilsPharmaceuticals, fruit juices,alucose, chemicals, wort, swimming pool water
Medium density aggregate
Silica, pumice, vermiculite subsitute in lightweight aggregate concrete
Aeration moisture control
Horticulture, plant rooting, seed composts, growing medium, soil conditioner, packing for shipping nursery stock, hydroponics, flower support
hydropobic
oil adsorption for pollution control in refineries, factories and garages
Abrasive
soaps, cleaners, polishes, wheels, disks and rub
Adsorption
carrier of agrichemicals in petiscides and hermisides, fertilizer bulking, pelletized seed
Fillers
plastics, texturing aggregate in paints, caulking compositions, explosives
Oil well treatments
oil well cementing and low density mud to prevent lost circulation of drilling fluids
Light weight aggregate constructions
bricks & tiles, pottery & lightweight refractories, calcium silicated products, non-load bearing fill in bridges, tunnels, floors, masonry, roofs, pipies, etc. tilt-up panels
Feed/litter
poultry litter, animal feed
Acoustic
plasters, mortars, plaster boards, ceiling tiles and upper wall insulation
Cryogenics
methane, liquid oxygen, nitrogen and other gases in containers, both for transport and in stationary plants