Perlite
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Perlite

MGT Mineral Company as a major producer, supplier and exporter of several minerals and materials in the Middle East, is located in Iran. MGT Mineral Company has a lot of experience in exporting and is active in case of Perlite supplying.

Perlite is a hydrated volcanic rock. Its unique structure consists of several concentric layers, similar to an onion layers. Its natural color ranges is from light pearl gray to dark gray. The preferable feature which sets Perlite apart from other volcanic siliceous rocks is that when heated more than 1600°F, it expands up to 20 times its original size. The expansion is because of the presence of water (nearly 5%) trapped in the crude ore. 

Iran has many Perlite resources and is one of the best Perlite suppliers in the Middle East. MGT Mineral Company has a great ability to make all necessary conditions for Perlite exporting.

 

Iran Perlite, Perlite

 

 

 

Typical Elemental Analysis
Silicon Dioxide (SiO2) 70-75 %
Aluminium Oxide (Al2O3) 12-15 %
Potassium Oxide (K2O) 3-5 %
Sodium Oxide (Na2o) 3-4 %
Iron Oxide (Fe2O3) 0.5-2 %
Magnesium Oxide (MgO) 0.2-0.7 %
Calcium Oxide (CaO) 0.5-1.5 %
loss on ignition (chemical/combined water) 3-5 %

All analysis are shown in elemental form even though the actual forms present are mixed glassy silicates. Free silica may be present in small amounts, characteristic of the particular ore body. More specific information may be obtained from the ore supplier involved.

 

Perlite producer, Iran Perlite-producer

 

Perlite Occurrences

In commercial usage the term "perlite" refers to any naturally occurring glass of igneous origin that will expand when either slowly or quickly heated to yield a frothy, light product. The term is also applied to the expanded product. In strict petrological usage the term "perlite" is restricted to a single variety of volcanic glass in which strain incident to cooling has yielded a concentric or "onion" structure of fracturing which may be visible to the naked eye or may be observed only under the microscope.

The volcanic glasses that froth to a product of commercial grade on heating generally have a chemical composition corresponding to that of rhyolite when computed on a water-free basis, although some are dacite. The silica content is normally greater than 70 percent. The water content may range from less than 1 percent in some obsidian to as much as 10 percent in some pitchstone. Most of the volcanic glass used commercially has a water content ranging from 3 to 5 percent. Volcanic glass having the chemical compositions of latite, andesite or basalt are not used. There is some controversy as to whether the water is in a molecular state or is dissociated. Thermal curves show that upon heating, the water is released at a regular rate so that partial crystallization is not a necessary state of the glass in so far as the water is concerned.

 

Perlite exporter, Iran Perlite-exporter

 

Perlite Usages

Perlite is used in a number of different situations. 

  • In the building and construction industry, expanded Perlite is mixed in mortar, concrete and plaster to utilize its thermal, acoustic, lightweight and fire resistant properties. Its thermal insulation properties and low density make it highly effective in roof insulation board, pipe insulation, and refrigerator insulation. Its sonic insulation properties make it an ideal material for acoustical ceiling tile.
  • Perlite is an important commodity in the horticulture industry where it is mixed with soil. The addition of Perlite to soil increases the amount of air (i.e., oxygen) held in the soil, as well as the amount of water retained by the soil. This obviously improves the growing conditions for plants. This represents approximately 10% of annual Perlite consumption.
  • Perlite is also used in a variety of different applications. For example, it is used as a filter for pharmaceuticals, chemicals, and beverages, and as a filler in the production of plastics and Cements.
  • The ability of expanded Perlite to retain water in its cellular structure makes it desirable in horticultural applications, and it is therefore used to condition soil. Expanded Perlite adds loft, reduces compaction, and facilitates water drainage and moisture retention in soils. It is commonly used as a propagating medium for seedlings and for the packaging and storage of bulbs and plants. Expanded Perlite can also be used as a substrate in hydroponic farming, and as a fertilizer carrying matrix.
  • The internal cellular structure of expanded Perlite makes it useful as a filtration aid and oil absorbent. Expanded Perlite offers high porosity and does not interfere chemically with the liquid filtered.
  • Expanded Perlite is used extensively in livestock applications for the absorption of nutrients, liquid chemicals such as pesticides, fertilizers, oils, and pharmaceuticals. It is used as an additive in animal feed mixtures to aid in digestion and for growth promotion, and also can be used as an absorbent in litter padding for chicken coops. Unexpanded Perlite can be used in ceramics, glass, explosives and several other applications.

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