Industrial Minerals

Feldspar

KAlSi3O8 / NaAlSi3O8
Feldspar
Industrial MineralsFeldspar
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Product Overview

About Feldspar

With its natural alkali content, hardness and fluxing behaviour, Feldspar is an important mineral for ceramic and glass processing as well as selected coating applications. Its mineral composition helps promote melting and vitrification, supporting reduced firing temperatures, densification and improved surface characteristics. In glass manufacturing, it contributes to melt composition and process control, while its hardness also supports functional use in mineral-filled formulations.

Advantages

Key Benefits

Why Feldspar is preferred across demanding industrial formulations.

Product advantage

Effective Fluxing Action – Supports lower melting and firing temperatures.

Product advantage

Good Hardness – Contributes to surface durability.

Product advantage

Controlled Mineral Composition – Supports process consistency.

Product advantage

Improved Vitrification – Promotes densification during firing.

Product advantage

Good Chemical Stability – Maintains reliable functionality.

Product advantage

Surface Finish Support – Contributes to smoothness and appearance.

Quality AssuredISO Certified
Lab TestedEvery Batch
ResponsibleSustainable
Global DeliveryWorldwide
Product Range

Available Grades

01

Ceramic Grade Feldspar

Premium feldspar for porcelain, sanitaryware, and technical ceramics.

02

Glass Grade Feldspar

Low-iron feldspar for clear container and flat glass production.

03

Filler Grade Feldspar

Ground feldspar for fillers, mild abrasives, and specialty applications.

04

Dental Grade Feldspar

High-purity feldspar for dental porcelain and prosthetics.

Product Markets

Feldspar Markets

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Frequently Asked Questions

Important information about Feldspar, grades and applications.

Feldspar acts as a flux that lowers melting temperature of ceramic bodies and glazes, reducing energy costs while providing alumina for strength and durability.

Potash feldspar (Orthoclase) contains more K₂O and has a higher melting range. Soda feldspar (Albite) contains more Na₂O and melts at lower temperatures.

Low iron (

We offer feldspar in various mesh sizes from 100 to 400 mesh, tailored for specific ceramic and glass applications.

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