High-Quality Sericite Mica Powder from China Suppliers - Reliable Factory for Coatings, Plastics, and Cosmetics

Sericite mica powder is a premium-grade, fine-grained mica mineral known for its naturally soft texture and smooth surface feel. With exceptional whiteness and outstanding chemical stability, this mica powder is widely recognized as a high-value functional mineral filler. Its fine particle size, layered crystal structure, low hardness, and excellent dispersion properties make it compatible with various industrial formulation systems. When compared to conventional coarse mica powder, sericite mica powder provides a superior smooth finish, enhanced coating appearance, and improved dispersion in a range of applications, including paints, plastics, cosmetics, rubber, and ceramics. The mineral structure of sericite offers impressive lamellar properties, allowing these thin layered particles to enhance barrier performance, suspension stability, dimensional stability, and surface smoothness across different formulations. In coatings, sericite mica powder contributes to smoothness, weather resistance, anti-cracking properties, and an aesthetically pleasing finish. In the plastics and rubber industries, it serves as a functional filler to bolster dimensional stability, minimize shrinkage, and improve mechanical performance. Additionally, carefully selected sericite powder is highly valued in cosmetic applications for its silky texture and smooth feel on the skin. As a leading supplier from China, WANCHENG MINERAL is dedicated to providing top-quality sericite mica powder to industrial customers, distributors, and formulation manufacturers worldwide. Our factory prioritizes stable raw material selection, controlled grinding processes, precise particle size classification, stringent quality inspections, and export-grade packaging. Our mission is to deliver consistent sericite powder solutions that meet the needs of customers seeking reliable mineral fillers for coatings, paints, plastics, cosmetics, rubber, ceramics, and more.

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Product Details

Chemical Composition & Typical Content

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	3% - 6%	Depends on ore and processing

Frequently Asked Questions

What is the dominant chemical component in this mineral?

Silicon Dioxide (SiO2) is the primary component, accounting for 45% to 55% of the total composition, providing the core silicate matrix structure.

How does Fe2O3 content affect the material's properties?

Iron Oxide (Fe2O3) directly influences the whiteness, visual clarity, and electrical insulation properties. Lower Fe2O3 content ensures higher purity and greater whiteness.

Why is K2O significant in the chemical breakdown?

Potassium Oxide (K2O), typically present at 6% - 10%, is a key alkali constituent defining the natural layered aluminosilicate structure of mica minerals.

What does "Loss on Ignition" (LOI) represent?

Loss on Ignition (3% - 6%) measures the weight lost when the mineral is heated to high temperatures, representing volatile substances, structural water, and organic matter.

What are the minor alkali and alkaline earth components?

The minor components include Magnesium Oxide (MgO: 0.5% - 3.0%), Calcium Oxide (CaO: ≤2.0%), and Sodium Oxide (Na2O: ≤1.5%).

Can the typical content percentages vary between batches?

Yes, variations within the specified ranges can occur depending on the geological origin of the ore deposit and the downstream processing and beneficiation methods used.

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