Biotite Mica Powder - High-Quality Industrial Mineral from China Suppliers and Factory for Various Applications

Biotite mica powder is a premium natural mineral powder sourced from carefully selected biotite ore, processed through advanced crushing, grinding, classification, and strict quality control. Renowned for its layered silicate structure, biotite exhibits excellent heat resistance, chemical stability, and electrical insulation, boasting a distinctive dark color ranging from black to deep brown. Due to these valuable properties, biotite mica powder is an essential industrial mineral filler and functional additive, widely utilized in coatings, plastics, rubber, ceramics, construction materials, welding materials, friction products, and specialty formulations. Unlike white muscovite mica powder, biotite mica powder is characterized by its darker hue and higher iron and magnesium content, making it the ideal choice for applications requiring a dark mineral filler, heat-resistant additive, or functional flake filler. Its unique plate-like particle morphology enhances barrier properties, dimensional stability, surface texture, and mechanical reinforcement across a variety of industrial applications. As a leading China supplier, WANCHENG MINERAL specializes in providing biotite mica powder in various mesh sizes and specifications tailored to customer needs. Our products are designed for both general industrial applications and customized formulations, with careful control over particle size, color, purity, moisture content, and packaging. With our stable raw material resources and extensive experience in mineral processing, WANCHENG MINERAL is your trusted factory for reliable biotite mica powder solutions catering to global customers.

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Product Details

Chemical Component	Typical Content	Description
SiO2	35% - 45%	Main silicate component
Al2O3	10% - 18%	Aluminosilicate component
Fe2O3 + FeO	12% - 28%	Contributes dark color
MgO	8% - 18%	Typical biotite component
K2O	6% - 10%	Interlayer potassium component
CaO	0.5% - 3%	Minor component
TiO2	0.5% - 3%	Trace or minor component
Loss on Ignition	1% - 5%	Depends on ore source

Frequently Asked Questions

Q: What is the primary chemical constituent of this mineral?

The major component is Silicon Dioxide (SiO2), ranging between 35% and 45%, which forms the fundamental silicate mineral structure.

Q: Why is there a significant presence of iron oxides (Fe2O3 + FeO)?

Iron oxides account for 12% to 28% of the total content, providing the mineral with its characteristic dark coloration and specific thermal properties.

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

Potassium Oxide (K2O), present at 6% to 10%, acts as an interlayer cation that stabilizes the layered aluminosilicate sheets.

Q: What factors influence the Loss on Ignition (LOI) value?

The Loss on Ignition typically ranges from 1% to 5% and varies primarily based on the geological source and the volatile/hydroxyl content within the raw ore.