China Tourmaline Powder Suppliers - High-Quality Functional Mineral Powder from Reliable Factory

Tourmaline powder, a high-performance functional mineral powder, is derived from carefully selected tourmaline ore through a series of processes including cleaning, crushing, grinding, classification, and rigorous quality inspection. This complex borosilicate mineral group contains various elements such as silicon, aluminum, boron, iron, magnesium, sodium, calcium, potassium, lithium, and other trace elements, depending on the specific ore type. Due to its unique mineral structure, tourmaline powder is extensively utilized across various industries, including functional materials, water treatment media, ceramics, coatings, plastics, textiles, personal care formulations, and industrial applications.

As a preferred choice compared to ordinary mineral fillers, tourmaline powder stands out not only for its excellent filler performance but also for its multifunctional properties. It serves as a vital raw material for products such as negative ion powders, far infrared powders, tourmaline ceramic balls, functional masterbatches, mineral coatings, water treatment solutions, cosmetic powders, textile finishing agents, and composite materials. Different sectors demand varying levels of fineness, purity, coloration, and functional testing standards; thus, selecting the proper grade is essential for ensuring consistent performance in downstream applications.

WANCHENG MINERAL, a leading China supplier and factory of tourmaline powder, offers a wide range of mesh sizes and customized specifications to meet the diverse needs of global customers. Standard grades include 100 mesh, 200 mesh, 325 mesh, 600 mesh, 800 mesh, 1250 mesh, and other custom fineness options. The product is available in black tourmaline powder, gray tourmaline powder, or as tailored functional mineral powders based on raw material sources and client requirements.

For international buyers, maintaining stable particle size distribution, clean packaging, low moisture content, consistent color, and reliable supply is crucial. WANCHENG MINERAL prioritizes controlled processing, thorough product inspection, export-ready packaging, sample availability, and comprehensive technical communication, ensuring customers can confidently select the most suitable tourmaline powder for their target markets.

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Product Details

Chemical Composition & Specifications

Chemical Component	Typical Content	Description
SiO₂	32% - 45%	Main silicate component
Al₂O₃	20% - 35%	Main alumina component
B₂O₃	5% - 12%	Typical tourmaline component
Fe₂O₃	2% - 12%	Varies by tourmaline type and color
MgO	1% - 10%	Varies by raw ore
Na₂O + K₂O	1% - 5%	Alkali components
CaO	0.5% - 5%	Minor component
TiO₂	Trace	Controlled impurity
Loss on Ignition	Low to moderate	Depends on raw ore and processing

Frequently Asked Questions

What are the main chemical constituents in this mineral specification?

The material is predominantly composed of silicon dioxide (SiO₂ at 32% - 45%) and aluminum oxide (Al₂O₃ at 20% - 35%), which form the core aluminosilicate crystal framework.

Why is boron oxide (B₂O₃) content significant?

Boron oxide (B₂O₃) typically ranges from 5% to 12% and is a defining characteristic of tourmaline-group minerals, contributing directly to their distinctive dielectric and physical properties.

Why does the iron oxide (Fe₂O₃) content vary between 2% and 12%?

The proportion of iron oxide varies depending on the specific mineral grade and color variety. Higher iron concentrations are typical in dark or black varieties (such as schorl).

What role do alkali components (Na₂O + K₂O) and minor oxides play?

Alkali oxides (1% - 5%) and minor components like CaO (0.5% - 5%) and MgO (1% - 10%) sit within the complex crystal structure, maintaining electrical neutrality and stability in the crystalline lattice.

How are trace elements like TiO₂ regulated?

Titanium dioxide (TiO₂) is present only in trace quantities as a tightly controlled impurity to ensure high chemical purity and consistent industrial performance.

What causes variations in the Loss on Ignition (LOI) value?

Loss on Ignition values remain low to moderate, determined primarily by the volatile content, hydration level of the source ore, and the calcination parameters used during processing.

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