Glass Grade Low Iron 80-100ppm Limestone Sand for Glass Making

Elevate the quality of your flat glass, container glass, and specialty glass production with our premium Glass Grade Low Iron Limestone Sand. Engineered for the most demanding optical clarity requirements, this high-purity calcium carbonate (CaCO₃) solution is specifically processed to meet the strict iron oxide (Fe₂O₃) thresholds required by the global glass industry.

Uncompromised Purity for Superior Clarity
Our limestone sand features an exceptionally low iron content, strictly controlled between 80 and 100 ppm (0.008%–0.01%). By minimizing ferric oxide levels, we significantly reduce the green tint traditionally associated with soda-lime glass, ensuring ultra-clear, water-white transparency. This high purity not only enhances aesthetic quality but also improves the melting efficiency and stability of the glass batch.

Key Features & Specifications:

• Low Iron (Fe₂O₃): 80–100 ppm (Ideal for ultra-clear architectural and solar glass)

• High Calcium Carbonate (CaCO₃): ≥ 98.5%

• Consistent Particle Size: Optimized grain distribution for rapid dissolution and uniform melting

• Chemical Stability: Guaranteed low levels of deleterious elements (MgO, SiO₂ insolubles) to prevent defects

Why Choose This Product?

• Enhanced Light Transmission: Perfect for photovoltaic (PV) solar panels, low-iron float glass, and high-end display screens where maximum energy yield and clarity are critical.

• Optimized Workability: The uniform granular structure ensures consistent batch homogeneity, reducing melt energy consumption and extending furnace life.

• Quality Assurance: Every batch undergoes rigorous chemical analysis and particle size distribution testing to ensure compliance with international glass manufacturing standards.

Applications:

• Solar Glass (Photovoltaic panels)

• Float Glass & Architectural Glass

• High-end Glass Containers

• Specialty Optical Glass

Technical Support & Supply Chain
We offer reliable bulk supply with flexible packaging options (jumbo bags or bulk vessels) to ensure just-in-time delivery for continuous glass production lines. Our in-house technical team is available to provide mill certificates and assist with batch formulation adjustments.