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

Nepheline Syenite for Flat Glass Manufacturing

How nepheline improves flat glass quality for windows, automotive, and architectural applications.

Flat glass — produced by the float process for windows, automotive glazing, architectural facades, mirrors, and solar panels — is the second-largest glass market segment.

Application Overview

Float glass production demands extreme raw material consistency because the continuous process runs 24/7 for years between furnace rebuilds. Any raw material batch variation can cause visible color shifts, seed (bubble) defects, or composition inhomogeneity across the ribbon width. Nepheline syenite serves the same role in flat glass as in container glass — partial soda ash replacement plus alumina source — but the consistency requirements are even more stringent. Our wet-process production with tight quality control and COA documentation meets the specifications of flat glass producers.

Technical Details & Formulation

Close-up of the product label on a 1200 kg FIBC bag
Close-up of the product label on a 1200 kg FIBC bag

The alumina from nepheline improves the weathering resistance of architectural glass and the scratch resistance of automotive glass. K100 grade for standard float glass; K200 for specialty glass requiring ultra-low iron..

Product Recommendation

FAQ

Questions on This Topic

What does Nepheline Syenite for Flat Glass Manufacturing cover?

Flat glass — produced by the float process for windows, automotive glazing, architectural facades, mirrors, and solar panels — is the second-largest glass market segment.

Is the material independently tested?

In-house testing covers every batch. Critical export shipments are additionally verified by Foshan Youbo Ceramic Analysis & Testing Co., Ltd., an independent ceramic testing laboratory.

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.

Which ports do you ship from?

FOB Tianjin, Qingdao or Lianyungang, all within 6-8 hours by truck from the plant. CIF to your destination port is also quoted on request.

Take It From Reading to Testing

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