Mine-owned nepheline syenite and feldspar since 2007
Fired whiteness disc pressed from sodium feldspar
Application Guides

Nepheline Syenite in Vitreous Enamel Coatings

How nepheline and feldspar serve as flux materials in vitreous enamel for metal substrates.

Vitreous enamel is a glass coating fused onto metal substrates (steel, cast iron, aluminum) at 750-850 degrees C to provide corrosion protection, chemical resistance, and decorative appearance.

Application Overview

Applications range from kitchen appliances (ovens, refrigerators, cooking pots) to bathtubs, chemical processing equipment, road signs, and architectural panels. Nepheline syenite and feldspar serve as flux materials in enamel frit formulations — providing SiO2, Al2O3, Na2O, and K2O to the glass composition. Our GP20 grade is particularly valuable for enamel frit production due to its five-oxide contribution (including CaO) from a single material, simplifying batch calculations and improving batch homogeneity. The absence of free silica in nepheline is an additional safety advantage for enamel frit production facilities.

Technical Details & Formulation

1200 kg FIBC jumbo bags of nepheline powder
1200 kg FIBC jumbo bags of nepheline powder

SY101 K-feldspar serves enamel applications requiring higher viscosity glass for specific coating thicknesses and application methods..

Product Recommendation

FAQ

Questions on This Topic

What does Nepheline Syenite in Vitreous Enamel Coatings cover?

Vitreous enamel is a glass coating fused onto metal substrates (steel, cast iron, aluminum) at 750-850 degrees C to provide corrosion protection, chemical resistance, and decorative appearance.

What is the lead time?

Production runs 7-14 days from order confirmation. Standard grades are normally held in stock, so container loading often starts within 3-5 working days.

What quality documentation comes with a shipment?

A batch-specific Certificate of Analysis covering XRF chemistry, particle size, moisture and fired whiteness at 1200 degrees C. We send it for approval before loading, and originals travel with the shipping paperwork.

What are your payment terms?

Standard terms are T/T with a 30% deposit on pro-forma invoice confirmation and 70% against a copy of the Bill of Lading. Letter of credit is accepted for orders above USD 50,000.

Take It From Reading to Testing

Send your current specification and the problem you are chasing. Samples follow within a week.