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Calcined Mica Powder
Mica
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Calcined Mica Powder

Calcined mica powder is a specially processed mica material produced by heating selected natural mica under controlled temperature conditions. Through calcination, part of the volatile matter and surface impurities can be reduced, while the natural layered structure of mica is retained. This process improves product cleanliness, thermal stability, color consistency, and performance in industrial formulations.

Mica is a natural silicate mineral with a unique plate-like structure. This structure gives calcined mica powder excellent heat resistance, electrical insulation, chemical stability, flexibility, low thermal conductivity, and good barrier performance. Because of these properties, calcined mica is widely used in coatings, plastics, rubber, welding materials, insulation products, refractory materials, construction materials, decorative finishes, and composite formulations.

Compared with ordinary natural mica powder, calcined mica powder has a cleaner appearance and better heat-treated stability. It can be used as a functional mineral filler to improve coating durability, surface texture, dimensional stability, anti-cracking performance, insulation performance, and thermal resistance. In decorative applications, coarse calcined mica flakes can also provide a natural mineral texture and visible flake effect.

WANCHENG MINERAL supplies calcined mica powder and calcined mica flakes for global customers. In addition to regular calcined mica products, we have developed a special silver calcined mica grade. This special product presents a silver appearance after calcination and is currently available in 10 mesh, 20 mesh, and 40 mesh only. It is designed for customers who need visible silver mica flakes, decorative mineral texture, or special surface effects in coatings and building materials.

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    Technical Specifications

    Main Chemical Composition Table
    Main Technical Parameters Table

    Chemical Component

    Typical Content

    Description
    SiO2 42% - 48% 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 Reduced after calcination Depends on calcination process

    Item

    Typical Value
    Product Name Calcined Mica Powder
    Material Type Heat-treated natural mica
    Appearance Powder or flakes
    Regular Product Color Golden Red, Gold, Silver
    Regular Particle Size Customized according to application
    Particle Structure Flake structure
    Moisture Low moisture
    Heat Resistance Good
    Chemical Stability Good
    Electrical Insulation Good
    Recommended Use Coatings, plastics, rubber, construction, insulation, refractory, decorative applications
    Packaging 25kg bags, jumbo bags, pallet packaging, OEM

    Note: The chemical composition and technical parameters above are typical reference values. Final data may vary depending on raw material source, calcination process, production batch, particle size, and customer testing method. The silver calcined mica series currently supplied by WANCHENG MINERAL is available in 10 mesh, 20 mesh, and 40 mesh only. Samples can be provided for customer evaluation before bulk orders.

    Advantages
    Packaging
    Production Process

    Calcined mica powder supplied by WANCHENG MINERAL offers multiple performance advantages for industrial customers.

    1. Improved Thermal Stability

    Calcination improves the stability of mica under high-temperature conditions and makes the product more suitable for heat-resistant applications.

    2. Natural Plate-Like Structure

    The plate-like structure of mica improves barrier performance, surface texture, reinforcement, and insulation properties in many formulations.

    3. Good Chemical Stability

    Calcined mica is chemically stable in many coating, plastic, rubber, and construction material systems.

    4. Clean Appearance

    The calcination process can help improve product appearance and reduce certain volatile impurities.

    5. Wide Particle Size Options

    Regular calcined mica products can be supplied in different particle sizes according to customer needs. The special silver calcined mica grade is currently available in 10 mesh, 20 mesh, and 40 mesh.

    6. Special Silver Grade Available

    The silver calcined mica grade gives customers a unique decorative mineral material that can be used in coatings, construction surfaces, textured finishes, and visual-effect formulations.

    Proper packaging is important for calcined mica powder because the product should remain dry, clean, and free from contamination during storage and transportation. WANCHENG MINERAL provides export-grade packaging suitable for international shipment.

    Common packaging options include 25kg PP woven bags, 25kg kraft paper bags, jumbo bags, palletized packaging, and OEM packaging. For coarse silver calcined mica grades such as 10 mesh and 20 mesh, careful handling is recommended to reduce particle breakage.

    Products should be stored in a dry and ventilated warehouse. Customers should avoid moisture, rain exposure, oil contamination, strong pressure, and damaged packaging.

    WANCHENG MINERAL follows a controlled production process for calcined mica powder to ensure stable quality and reliable application performance.

    1. Raw Mica Selection

    Selected natural mica is chosen based on flake structure, color, impurity level, and suitability for calcination.

    2. Cleaning and Pre-Treatment

    The raw mica is cleaned and prepared to reduce impurities and improve final product quality.

    3. Controlled Calcination

    The material is heated under controlled temperature conditions. This step improves thermal stability and product appearance.

    4. Cooling

    After calcination, the material is cooled under controlled conditions to maintain particle stability.

    5. Grinding or Flake Classification

    Depending on the target product, calcined mica can be ground into powder or classified into coarse flake grades. The silver calcined mica grade is currently classified into 10 mesh, 20 mesh, and 40 mesh.

    6. Screening and Quality Inspection

    The product is screened and checked for particle size, color, moisture, cleanliness, and packaging condition.

    7. Packaging and Shipment

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

    Applications

    Calcined mica powder is used in a wide range of industrial and decorative applications. The most suitable grade depends on particle size, color, purity, formulation system, and final performance requirements.

    1. Coatings and Paints

    Calcined mica powder is used in industrial coatings, architectural paints, anti-corrosion coatings, textured coatings, and decorative finishes. Its plate-like structure improves barrier performance, weather resistance, and coating durability. Fine grades can be used as functional fillers, while coarse grades can provide mineral texture.

    2. Plastics and Rubber

    In plastic and rubber formulations, calcined mica powder can improve dimensional stability, heat resistance, stiffness, insulation performance, and surface appearance. It is often used in engineering plastics, rubber compounds, and composite materials.

    3. Insulation Materials

    Mica is well known for electrical insulation. Calcined mica powder can be used in insulation boards, electrical components, heat-resistant insulation layers, and other electrical material systems.

    4. Refractory and Heat-Resistant Materials

    Because calcined mica has good thermal stability, it can be added to refractory mixtures, heat-resistant coatings, fire-resistant boards, and thermal protection materials.

    5. Construction and Decorative Materials

    Coarse calcined mica flakes can be used in decorative mortar, wall coatings, floor coatings, artificial stone, terrazzo-like materials, and building surface products. The special silver calcined mica grade from WANCHENG MINERAL is especially suitable for visible decorative effects in this area.

    6. Welding Materials

    Mica powder can be used in certain welding electrode coatings and flux-related formulations where thermal stability and mineral structure are required.

    FAQ

    • Q1: What is calcined mica powder?

      Calcined mica powder is a mica material processed by controlled thermal treatment. It retains the natural layered structure of mica while improving thermal stability, cleanliness, and appearance.

    • Q2: What is the difference between calcined mica and natural mica?

    • Q3: What specifications are available for silver calcined mica?

    • Q4: Is silver calcined mica a fine powder?

    • Q5: What industries use calcined mica powder?

    • Q6: Can WANCHENG MINERAL provide samples?

    Contact WANCHENG MINERAL

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

    WANCHENG MINERAL supplies calcined mica powder, calcined mica flakes, and a specially developed silver calcined mica grade. Our silver calcined mica is currently available in 10 mesh, 20 mesh, and 40 mesh. We provide stable quality, export-grade packaging, sample support, technical communication, and customized mineral solutions for global customers.
    Contact WANCHENG MINERAL today to request specifications, samples, technical support, and competitive pricing.
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