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Expanded Vermiculite Powder from China Suppliers - Quality Mineral Filler from Trusted Factory
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Expanded Vermiculite Powder from China Suppliers - Quality Mineral Filler from Trusted Factory

Expanded vermiculite powder is a lightweight mineral substance derived from natural vermiculite ore, which undergoes high-temperature expansion and subsequent grinding or classification. As a hydrated magnesium-aluminum silicate mineral with a unique layered structure, natural vermiculite expands when heated rapidly, turning the water trapped between its layers into steam. This process results in expanded vermiculite that is characterized by low bulk density, a porous structure, excellent thermal insulation, sound absorption, fire resistance, and moisture retention.

Unlike regular expanded vermiculite particles, expanded vermiculite powder offers a finer particle size and superior dispersibility, making it ideal for a variety of formulations. It serves multiple purposes as a lightweight filler, insulating additive, fire-resistant mineral component, soil amendment, absorbent powder, and functional filler across industries such as construction, agriculture, coatings, refractory materials, friction products, animal feed carriers, and industrial applications.

As one of the leading China suppliers, WANCHENG MINERAL offers high-quality expanded vermiculite powder tailored to meet specific customer needs, including stable particle size, lightweight performance, effective absorption, low thermal conductivity, and reliable bulk supply. Our products can be customized according to mesh size, bulk density, moisture content, packaging, and application demands. We recommend sample testing for all technical applications before placing bulk orders to ensure compatibility with production systems.

Recognized for its natural origin, low density, thermal stability, and versatile applications, expanded vermiculite powder is an essential material for those seeking to reduce weight, improve insulation, enhance porosity, boost fire resistance, or add an effective mineral carrier with absorption capabilities. At WANCHENG MINERAL, we prioritize quality control, consistent supply, export packaging, and professional communication to serve global industrial customers effectively. As a trusted factory in the industry, we are dedicated to delivering products that meet the highest standards.

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    Product Details

    Chemical Component Typical Content Description
    SiO2 35% - 45% Main silicate component
    MgO 15% - 25% Typical vermiculite component
    Al2O3 8% - 15% Aluminosilicate component
    Fe2O3 5% - 12% Varies by ore source
    K2O 2% - 6% Interlayer component
    CaO 1% - 4% Minor component
    TiO2 0.5% - 2% Trace component
    Loss on Ignition Reduced after expansion Depends on processing

    Frequently Asked Questions

    Q What is the primary chemical component in this material?

    The primary component is Silicon Dioxide (SiO2), accounting for 35% to 45% of the total composition as the main silicate base.

    Q Why does the content of Fe2O3 vary in the analysis?

    The concentration of Iron Oxide (Fe2O3), typically ranging from 5% to 12%, varies depending directly on the specific geological source of the ore.

    Q What role does MgO play in this composition?

    Magnesium Oxide (MgO) represents a typical vermiculite component, generally comprising between 15% and 25% of the material.

    Q What happens to the Loss on Ignition after processing?

    The Loss on Ignition value is significantly reduced after thermal expansion, with final values depending on the specific processing conditions.

    Q What are the trace elements present in the material?

    Trace and minor components include Titanium Dioxide (TiO2) at 0.5% - 2% and Calcium Oxide (CaO) at 1% - 4%.

    Q How does K2O function within the structure?

    Potassium Oxide (K2O), present at 2% to 6%, serves as an interlayer component within the mineral's layered crystal structure.

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    FAQ

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