For float glass, long-term stability is more important than short-term reaction speed. This is why soda feldspar is an important part of modern float glass formulas.
Soda feldspar is widely used in float glass production. It is a stable raw material that helps glass plants keep smooth melting, steady furnace operation, and consistent glass quality.
Why Soda Feldspar Is Used in Float Glass
Float glass production runs 24 hours a day and for many years. Raw materials must be stable, predictable, and easy to control.
Stable Source of Na?O
Soda feldspar provides Na?O to the glass batch. Na?O helps lower the melting temperature and improve melt flow.
Compared with fast-reacting materials, sodium feldspar releases Na?O in a more stable and gentle way. This helps keep the furnace condition steady.
Supports a Balanced Glass Structure
Sodium feldspar does more than supply Na?O.
It also provides:
?SiO? for the glass network
?Al?O? to improve chemical stability and strength
This balanced composition helps produce uniform and stable float glass.
Helps Reduce Melting Problems
Soda feldspar melts in a controlled way.
This supports good mixing and melting inside the furnace.
It helps reduce:
?Unmelted particles
?Streaks in glass
?Local composition changes
This is very important for large-scale float glass lines.
Advantages of Soda Feldspar in Float Glass
Stable Na?O supply for continuous production
?Smooth melting behavior
?Better glass uniformity
?Improved chemical stability
Suitable for normal float glass and high-quality float glass
Sodium feldspar is not a replacement for soda ash. It works together with soda ash to balance speed and stability.
LSFerroalloy Soda Feldspar for Float Glass
For float glass, raw material stability is more important than theory values. LSFerroalloy focuses on long-term quality control.
Stable Chemical Composition
Our sodium feldspar is produced with strict control:
?Na?O: 10.5%–11% (±0.5%)
?Fe?O?: 0.15% (±0.05%)
?No free silica
Stable Na?O helps keep glass formulas consistent.
Low Fe?O? helps improve light transmission and color quality.
No free silica helps reduce unmelted defects.
Own Mine, Stable Supply
LSFerroalloy owns its own feldspar mine. Quality control starts from the raw ore, not from trading.
This gives our customers:
?Stable raw material source
?Low batch variation
?Reliable long-term supply
This is very important for float glass plants.
Quality Control from Production to Shipment
From mining to processing, testing, packing, and shipment, LSFerroalloy follows one quality control system.
For us, shipment is not the end. It is part of our quality promise.
Conclusion
Soda feldspar is used in float glass because it provides stable melting, balanced glass structure, and long-term process control.
With stable Na?O content, low iron level, no free silica, and own mine resources, LSFerroalloy supplies reliable sodium feldspar for float glass production worldwide.