Biotite Mica Powder Suppliers in China - High-Quality Products from Reliable Factory

Introducing our premium biotite mica powder, a natural dark-colored mineral powder extracted from high-quality biotite ore. Through a meticulous process of crushing, grinding, classification, and quality inspection, we ensure a top-tier product that meets the demands of various industries. Biotite, part of the mica mineral group, is recognized for its unique layered silicate structure, excellent heat resistance, chemical stability, and electrical insulation properties. Its natural black to dark brown color makes it an ideal choice for applications requiring a robust industrial mineral filler and functional additive in coatings, plastics, rubber, ceramics, construction materials, welding supplies, friction products, and specialty formulations.

Unlike white muscovite mica powder, our biotite mica powder boasts a darker hue, typically richer in iron and magnesium. This characteristic makes it highly suitable for applications that need a dark mineral filler, a heat-resistant additive, or an effective flake filler. The plate-like morphology of biotite enhances barrier properties, dimensional stability, surface texture, and mechanical strength in various industrial systems.

As a leading supplier and factory in China, WANCHENG MINERAL offers biotite mica powder in a range of mesh sizes and specifications tailored to customer requirements. Our products are expertly designed for both general industrial applications and customized formulations, with strict controls over particle size, color, purity, moisture, and packaging. With reliable raw material sources and extensive mineral processing expertise, WANCHENG MINERAL provides dependable biotite mica powder solutions for customers around the globe.

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Product Details

Chemical Composition Specification

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

What is the primary chemical component in this material?

Silicon Dioxide (SiO₂) is the dominant constituent, ranging between 35% and 45%, providing the fundamental structural framework as the main silicate component.

Why does this mineral exhibit a characteristic dark color?

The coloration is primarily attributed to the significant concentration of Iron Oxides (Fe₂O₃ + FeO), which make up 12% to 28% of the total composition.

What role does Potassium Oxide (K₂O) play in this composition?

Potassium Oxide (K₂O) accounts for 6% to 10% and serves as the interlayer potassium component within the layered aluminosilicate mineral structure.

What are the minor and trace elements present in the material?

Calcium Oxide (CaO) and Titanium Dioxide (TiO₂) constitute the minor and trace components, each typically occurring in quantities between 0.5% and 3%.

What does the Loss on Ignition (LOI) value indicate?

The Loss on Ignition (1% - 5%) reflects the percentage of volatile substances released during high-temperature heating, which varies depending on the specific ore source.

How does Magnesium Oxide (MgO) contribute to the mineral's profile?

With a concentration ranging from 8% to 18%, Magnesium Oxide (MgO) represents a quintessential biotite component, contributing to its chemical stability and structural classification.

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