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Dry Ground Mica Powder

Dry ground mica powder is a natural mineral filler produced by mechanically crushing, grinding, screening, and classifying selected mica ore without using wet grinding media. It keeps the natural layered crystal structure of mica and provides good heat resistance, electrical insulation, chemical stability, flexibility, and barrier performance. Because of its cost efficiency and wide particle size availability, dry ground mica powder is one of the most widely used mica products in industrial formulations.

Compared with wet ground mica powder, dry ground mica powder usually has a relatively lower aspect ratio and a slightly rougher surface. However, it offers excellent economic value, easier large-scale production, stable supply, and broad compatibility with coatings, plastics, rubber, construction materials, welding electrodes, ceramics, and insulation systems. It is especially suitable for customers who need a functional mineral filler rather than a high-end pearlescent pigment or ultra-high aspect ratio mica product.

WANCHENG MINERAL supplies dry ground mica powder for global industrial customers who require consistent quality, reliable packaging, and flexible specifications. Our products can be processed into different mesh sizes according to application requirements. In coatings, mica powder can improve barrier properties and reduce cracking. In plastics and rubber, it can improve dimensional stability, stiffness, and surface performance. In welding electrodes and insulation materials, mica contributes to heat resistance and electrical properties.

    Technical Specifications

    Dry ground mica powder can be supplied in different particle sizes depending on the final application. Coarse grades are commonly used in construction materials, welding electrodes, and textured formulations, while fine grades are used in coatings, plastics, rubber, sealants, and industrial fillers. The final grade should be selected according to dispersion requirements, surface appearance, mechanical performance, and cost target.

    WANCHENG MINERAL can supply common dry ground mica powder grades such as 20 mesh, 40 mesh, 60 mesh, 100 mesh, 200 mesh, 325 mesh, 600 mesh, 800 mesh, 1250 mesh, and customized specifications. The available range may vary according to raw material type and order requirements. Customers can provide target particle size, application, packaging requirements, and technical standards, and our team will recommend a suitable grade.

    The typical technical data listed on this page are reference values only. Mica is a natural mineral, so chemical composition, whiteness, particle shape, and physical properties may vary slightly by mine source and production batch. WANCHENG MINERAL can provide samples and batch data for customer testing before bulk purchase.

    Chemical Component

    Typical Content

    Description

    SiO2 42% - 50% Main silicate component
    Al2O3 28% - 38% Main alumina component
    K2O 7% - 11% Typical mica alkali component
    Fe2O3 1% - 6% Affects color and mineral characteristics
    MgO 0.5% - 3% Minor component
    CaO <= 2% Minor component
    Na2O <= 1.5% Minor alkali component
    Loss on Ignition 3% - 6% Depends on raw material and processing

    Item

    Typical Value

    Product Name Dry Ground Mica Powder
    Material Type Natural mica powder
    Processing Method Dry grinding, screening, classification
    Appearance White, off-white, light yellow, grey or natural mica color
    Particle Shape Flake powder
    Available Mesh 20 - 1250 mesh or customized
    Moisture Low moisture, typically <= 1% - 2%
    Heat Resistance Good
    Electrical Insulation Good
    Chemical Stability Good
    Main Applications Coatings, plastics, rubber, welding electrodes, construction materials, insulation
    Packaging 25kg bags, jumbo bags, pallet packaging, OEM

    Note: The chemical composition and technical parameters above are typical reference values for dry ground mica powder. Final values may vary according to mine source, mica type, processing method, mesh size, and customer testing method. WANCHENG MINERAL can provide product samples and batch information for customer evaluation.

    Dry ground mica powder supplied by WANCHENG MINERAL provides several practical advantages for industrial manufacturers. The product is not only a filler but also a functional mineral material that can improve performance in many formulations. 

    1. Cost-Effective Functional Filler

    Dry grinding is suitable for large-scale production, making dry ground mica powder a cost-effective choice for coatings, plastics, rubber, construction materials, and welding electrodes. 

    2. Natural Flake Structure

    The layered structure of mica improves barrier properties, dimensional stability, and surface texture. It helps create a physical barrier inside coatings and composites. 

    3. Good Heat Resistance

    Mica is naturally heat resistant and suitable for formulations exposed to elevated temperatures. 

    4. Electrical Insulation

    Mica has good dielectric and insulation properties, making it useful in electrical and insulation applications. 

    5. Chemical Stability

    Dry ground mica powder has stable chemical properties and good resistance to many industrial environments. 

    6. Flexible Mesh Sizes

    WANCHENG MINERAL can provide multiple particle sizes for different applications, from coarse grades to fine powder grades. 

    7. Reliable Export Supply

    We support global customers with stable supply, export-grade packaging, sample testing, and professional communication. 

    WANCHENG MINERAL provides flexible packaging solutions for dry ground mica powder according to customer requirements, order quantity, transportation method, and final market needs. Proper packaging helps protect the product from moisture, contamination, and leakage during storage and international shipment. 

    Common packaging options include 25kg PP woven bags, 25kg kraft paper bags, laminated bags, jumbo bags, palletized packaging, and OEM customized packaging. For export shipments, bags can be loaded directly into containers or packed on pallets for easier warehouse handling. 

    Storage should be in a dry, clean, ventilated warehouse. Avoid moisture, rain, oil contamination, and damaged packaging. If the product is used in coatings, plastics, or high-value formulations, customers should keep bags sealed before use to maintain stable dispersion and cleanliness.

    The production of dry ground mica powder focuses on raw material selection, mechanical grinding, particle size control, and quality inspection. WANCHENG MINERAL follows a controlled production process to provide stable and reliable mica powder for industrial customers. 

    1. Raw Mica Selection

    Selected natural mica ore is chosen according to color, purity, flake structure, impurity level, and target application.

    2. Cleaning and Sorting

    Raw mica is cleaned and sorted to reduce visible impurities and unsuitable materials before crushing. 

    3. Crushing

    The selected mica is crushed into smaller pieces suitable for grinding. 

    4. Dry Grinding

    The crushed material is processed by dry grinding equipment to obtain the required particle size range. 

    5. Screening and Classification

    The ground mica powder is screened and classified into different mesh sizes. Oversized particles may be returned for further grinding. 

    6. Quality Inspection

    Each batch is checked for particle size, appearance, moisture, whiteness or color, impurities, and packaging condition. 

    7. Packaging and Shipment

    Qualified products are packed according to export standards or customer requirements.

    Applications

    Dry ground mica powder is used across many industrial sectors because it combines natural flake structure, thermal stability, insulation performance, and cost efficiency. It is a practical filler for manufacturers who need mineral reinforcement, improved barrier performance, reduced shrinkage, or improved surface characteristics.

    1. Coatings and Paints

    Dry ground mica powder can be used in industrial coatings, anti-corrosion coatings, architectural paints, textured coatings, waterproof coatings, and protective coatings. The flake structure helps extend the penetration path of moisture and chemicals, improving barrier performance. It can also reduce cracking and improve coating durability. 

    2. Plastics and Polymers

    In plastics, mica powder can improve stiffness, dimensional stability, heat resistance, and surface appearance. It is used in polypropylene, PVC, engineering plastics, masterbatch, and composite materials. 

    3. Rubber Products

    Dry mica powder is used in rubber products to improve dimensional stability, reduce sticking, improve barrier properties, and enhance reinforcement in selected formulations. 

    4. Welding Electrodes

    Mica powder is used in welding electrode coatings because of its heat resistance, insulation properties, arc stability contribution, and slag-forming support. 

    5. Construction Materials

    Dry ground mica powder can be used in dry mortar, wall coatings, cement-based products, gypsum products, decorative boards, and thermal insulation materials. 

    6. Ceramics and Refractory Materials

    Mica can be used as a mineral component in ceramics and refractory mixtures where heat resistance and mineral stability are required. 

    7. Insulation and Electrical Materials

    Because mica has good electrical insulation properties, dry ground mica powder can be used in certain insulation materials, cable compounds, electrical components, and thermal protection products.

    FAQ

    • Q1: What is dry ground mica powder?

      Dry ground mica powder is mica powder produced by mechanical dry grinding, screening, and classification. It retains the natural flake structure of mica and is widely used as a functional filler in industrial applications.
    • Q2: What is the difference between dry ground mica powder and wet ground mica powder?

    • Q3: What mesh sizes can WANCHENG MINERAL provide?

    • Q4: Is dry ground mica suitable for coatings?

    • Q5: Can dry mica powder be used in plastics?

    • Q6: Can WANCHENG MINERAL provide samples?

     Contact WANCHENG MINERAL 

    Looking for a reliable dry ground mica powder manufacturer and supplier in China? 

    WANCHENG MINERAL provides high-quality dry ground mica powder, stable particle size, multiple mesh options, export-grade packaging, sample support, and customized mineral solutions for global industrial customers. 
    Contact WANCHENG MINERAL today to request product specifications, samples, technical support, and competitive pricing.