Sericite Mica Powder from China - Quality Suppliers and Factory for Paints, Plastics, and Cosmetics

Sericite mica powder, sourced from leading suppliers in China, is a premium quality mineral known for its fine-grained texture and soft, smooth surface. This high-value functional mineral filler boasts exceptional whiteness and chemical stability, making it an ideal choice for a range of industrial applications. Unlike ordinary coarse mica powders, sericite powder enhances the finish and appearance of coatings, paints, plastics, cosmetics, rubber, and ceramics, ensuring uniform dispersion and a smoother texture. The unique layered crystal structure of sericite contributes to its outstanding lamellar properties. These thin, layered particles improve barrier performance, suspension stability, and surface smoothness across various formulations. In the coatings industry, sericite mica powder enhances smoothness, weather resistance, and anti-cracking properties, while in plastics and rubber, it serves as a functional filler, improving dimensional stability and reducing shrinkage. Additionally, in cosmetic applications, sericite powder is prized for its silky texture and skin feel, adding value to beauty products. WANCHENG MINERAL, a trusted factory in China, specializes in supplying high-quality sericite mica powder to global industrial customers, distributors, and formulation manufacturers. We prioritize consistent quality through meticulous raw material selection, controlled grinding, precise particle size classification, and stringent quality inspection. Our export-grade packaging ensures that you receive reliable mineral fillers for all your coating, paint, plastic, cosmetic, rubber, ceramic, and other application needs.

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Product Details

Comprehensive mineral chemical breakdown: High purity silicate and alumina base suitable for industrial applications.

Chemical Component	Typical Content	Description
SiO₂	45% - 55%	Main silicate component
Al₂O₃	25% - 35%	Main alumina component
K₂O	6% - 10%	Typical mica alkali component
Fe₂O₃	0.5% - 3.0%	Affects whiteness and color
MgO	0.5% - 3.0%	Minor component
CaO	≤ 2.0%	Minor component
Na₂O	≤ 1.5%	Minor alkali component
Loss on Ignition (LOI)	3% - 6%	Depends on ore and processing

Frequently Asked Questions

What are the primary components in this mineral composition?

Silicon Dioxide (SiO₂, 45%–55%) and Aluminum Oxide (Al₂O₃, 25%–35%) form the primary backbone, contributing to structural stability, heat resistance, and chemical inertness.

How does the Fe₂O₃ level impact product quality?

Iron oxide (Fe₂O₃) directly impacts visual appearance and electrical insulation. Lower concentrations (near 0.5%) yield significantly higher whiteness and brightness, preferred in cosmetics and high-grade plastics.

What role does Potassium Oxide (K₂O) play in the structure?

Potassium Oxide (K₂O, 6%–10%) is the characteristic interlayer alkali cation that binds the aluminosilicate sheets, providing high dielectric strength and cleavage properties.

What does Loss on Ignition (LOI) indicate in chemical analysis?

Loss on Ignition (3%–6%) represents the weight percentage lost when heated to high temperatures (typically 950°C–1000°C), corresponding to structural hydroxyl (OH) water and minor organic or carbonate release.

Can these chemical compositions be customized or tailored?

While the base values are governed by natural geological ore deposits, processing techniques such as flotation, magnetic separation, and washing can adjust trace elements like Fe₂O₃ and overall purity.

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