High-Quality Mica Powder from China - Reliable Suppliers & Factory for Various Applications

Mica powder is a versatile non-metallic mineral derived from natural mica, characterized by its unique layered crystal structure. This China-based mineral is famous for its outstanding flake morphology, excellent chemical stability, high-temperature resistance, electrical insulation properties, low thermal conductivity, and remarkable barrier performance. Due to these beneficial characteristics, mica powder is highly sought after as an essential ingredient in various industries, including coatings, paints, plastics, rubber, ceramics, construction materials, cosmetics, friction materials, welding materials, insulation materials, and more. As one of the leading suppliers in the mica industry, WANCHENG MINERAL offers a range of mica powder products, including muscovite mica powder, dry ground mica powder, wet ground mica powder, sericite mica powder, calcined mica powder, and colored mica powder, all produced in our state-of-the-art factory. Our mica products not only serve as cost-effective mineral fillers but also enhance performance applications. The natural flake structure of mica improves barrier properties, dimensional stability, anti-cracking performance, heat resistance, and surface smoothness. When used in coating systems, mica powder can effectively extend the penetration path for moisture and corrosive media. In plastics and rubber, it enhances stiffness, dimensional stability, and processing performance. Additionally, selected mica grades can elevate the aesthetic appeal in cosmetic and decorative applications with their smooth texture and pearlescent effects. For international industrial buyers, choosing the right mica powder from reputable suppliers is crucial. A product ideal for decorative coatings may not meet the requirements for engineering plastics, while cosmetic mica grades necessitate different purity, softness, color, and particle size preferences compared to industrial filler grades. WANCHENG MINERAL is committed to providing technical support, sample provisions, customized packaging options, and a reliable bulk supply for our global customers. Choose WANCHENG MINERAL as your trusted partner for high-quality mica powder solutions from China.

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Product Details

Chemical Composition & Specifications

Chemical Component	Typical Content	Description
SiO₂	40% - 50%	Main silicate component
Al₂O₃	20% - 38%	Main alumina component
K₂O	6% - 11%	Typical mica alkali component
Fe₂O₃	0.5% - 6%	Varies by mica type and color
MgO	0.5% - 5%	Varies by mica type
CaO	< 2%	Minor component
Na₂O	< 1.5%	Minor alkali component
Loss on Ignition	Varies by grade	Depends on mineral type and processing

Frequently Asked Questions

Q What are the primary chemical constituents in mica?

The dominant chemical components are Silicon Dioxide (SiO₂, 40%-50%) and Aluminum Oxide (Al₂O₃, 20%-38%), which provide the fundamental silicate sheet structure and high thermal stability.

Q Why does the content of Fe₂O₃ vary between grades?

Iron oxide (Fe₂O₃) content ranges from 0.5% to 6% depending on the mica mineral variety (e.g., muscovite typically has lower iron than phlogopite or biotite), directly influencing the material's color and electrical resistivity.

Q What is the significance of the K₂O content?

Potassium oxide (K₂O) typically constitutes 6% to 11% and acts as an interlayer cation that binds the aluminosilicate sheets together, defining the cleavage and mechanical characteristics of the mineral.

Q What does "Loss on Ignition" (LOI) indicate in mica analysis?

Loss on Ignition measures the release of volatile substances and chemically bound hydroxyl (OH) water when the material is subjected to high temperatures, serving as an indicator of purity and processing quality.

Q How do minor oxides like CaO and Na₂O affect performance?

Calcium (CaO < 2%) and Sodium (Na₂O < 1.5%) oxides occur in trace amounts. Low levels ensure that the mica retains high dielectric strength, superior chemical inertness, and thermal stability in sensitive applications.

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