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Lightweight Expanded Perlite Insulation - Industrial Applications from China Suppliers and Factory

Perlite is a unique amorphous volcanic glass that contains a significant amount of water, typically formed through the hydration of obsidian. This natural mineral is known for its remarkable ability to expand when exposed to high temperatures, making it a valuable industrial resource. As one of the leading suppliers and factories located in China, we offer high-quality perlite that undergoes an extensive processing to ensure its low density and excellent performance, When heated to temperatures between 850–900 °C (1,560–1,650 °F), perlite undergoes a popping process where water trapped within its structure vaporizes, causing it to expand up to 7–16 times its original volume. The resulting expanded perlite is characterized by its bright white color, attributed to the reflective bubbles formed during expansion. Raw perlite has a bulk density of approximately 1100 kg/m³ (1.1 g/cm³), while the typical expanded variety ranges from 30–150 kg/m³ (0.03–0.150 g/cm³), making it an ideal choice for various applications, As a reputable supplier and factory in China, we are committed to providing premium perlite that meets the diverse needs of our customers across different industries

    Specification

    Commodity Expanded Perlite
    Size 150mesh, 100mesh, 40-60mesh, 1-3mm, 2-5mm, 3-6mm, 4-8mm
    Loose density (g/l) 50-170
    Specific gravity (g/l) 60-260
    PH 6-9
    LOI 3% Max.

    Typical Analysis

    SiO2 70–75%
    Al2O3 12–15%
    Na2O 3–4%
    K2O 3–5%
    Fe2O3 0.5-2%
    MgO 0.2–0.7%
    CaO 0.5–1.5%

    Use

    In the construction and manufacturing fields, it is used in lightweight plasters, concrete and mortar (masonry), insulation and ceiling tiles. It may also be used to build composite materials that are sandwich-structured or to create syntactic foam.
    In horticulture, perlite can be used as a soil amendment or alone as a medium for hydroponics or for starting cuttings. When used as an amendment it has high permeability / low water retention and helps prevent soil compaction.
    Perlite is an excellent filtration aid and used as an alternative to diatomaceous earth. The popularity of perlite usage as a filter medium is growing considerably worldwide. Perlite filters are fairly commonplace in filtering beer before it is bottled.
    Perlite is also used in foundries, cryogenic insulation.
    Perlite is a useful additive to gardens and hydroponic setups.
    Perlite has a neutral PH level.
    It contains no toxic chemicals and is made from naturally occurring compounds found in soil.
    Perlite is directly comparable to another mineral additive called Vermiculite. Both have overlapping functions and help with soil aeration and seed starting.

    Packaging

    Packing Options 100L, 1000L, 1500L bags
    Load Quantity 25-28M³/20’GP, 68-73M³/40’HQ

    Frequently Asked Questions

    What sizes of Expanded Perlite are available?
    Expanded Perlite is available in a wide range of sizes, including 150mesh, 100mesh, 40-60mesh, 1-3mm, 2-5mm, 3-6mm, and 4-8mm to suit different industrial, horticultural, and construction needs.
    What is the pH level and chemical safety of Expanded Perlite?
    Expanded Perlite has a neutral pH level of 6-9. It contains no toxic chemicals and is made entirely from naturally occurring compounds found in soil, making it safe for gardening and agricultural applications.
    How is Expanded Perlite used in construction?
    In construction and manufacturing, it is widely used in lightweight plasters, concrete, masonry mortar, insulation, and ceiling tiles. It is also used to build sandwich-structured composite materials or to create syntactic foam.
    Why is Expanded Perlite beneficial for horticulture and soil?
    When used as a soil amendment or hydroponic medium, perlite offers high permeability and low water retention. This helps to aerate the soil, prevent soil compaction, and support healthy root growth or starting cuttings.
    Can Expanded Perlite be used for filtration?
    Yes, Expanded Perlite serves as an excellent filtration aid and is a popular alternative to diatomaceous earth. It is commonly used globally as a filter medium, including for filtering beer before bottling.
    What are the standard packaging and shipping capacities?
    It is packed in 100L, 1000L, and 1500L bags. For shipping, the loading quantities are 25-28M³ per 20’GP container and 68-73M³ per 40’HQ container.