Natural Dolomite Powder
Magnesium Oxide (MgO):≥ 20.5%
Iron Oxide (Fe₂O₃):≤ 0.008% (80 ppm)
Fe₂O₃ (High-End Grade):≤ 0.005% (50 ppm)
Al₂O₃:≤ 0.2%
Moisture Content:≤ 0.5%
Ultra-Low Iron Content for High-End Glass
We offer natural dolomite powder. The term "natural" reflects our respect for raw materials and our commitment to purity. We carefully select high-quality, low-iron dolomite ore and remove impurities through advanced processing.
Our factory, established in 2017, has extensive experience in calcium product manufacturing. We operate 6 production lines with an annual output of 300,000 tons. We are more than just a supplier; we are a reliable partner for high-end industries such as photovoltaic glass. Our natural dolomite powder is designed for the most demanding applications.
Key Specifications and Our Core Advantage
Our main strength is ultra-low iron content, which is critical for glass light transmittance. We use processes such as magnetic separation to reduce iron content to extremely low levels. The table below outlines our strict standards.
We guarantee a calcium oxide (CaO) content of 31.5% ± 1.5% and a magnesium oxide (MgO) content of ≥ 20.5%. Our natural dolomite powder is available in a photovoltaic glass grade with ≤ 0.008% Fe₂O₃ and an ultra-white glass grade with ≤ 0.005% Fe₂O₃.
Technical Parameters
|
Parameter |
Technical Index |
Our Advantage & Guarantee |
|
Product Name |
Low-iron dolomite sand | Low-iron ore selection ensures strict control of iron content from the source |
| Calcium Oxide (CaO) | 31.5% ± 1.5% | Tested according to GB/T 3286-2012 to ensure stable calcium levels |
| Magnesium Oxide (MgO) | ≥ 20.5% | Guaranteed magnesium content, a key indicator for dolomite quality |
| Iron Oxide (Fe₂O₃) | ≤ 0.008% (80 ppm) | Core advantage; meets photovoltaic glass standards |
| Fe₂O₃ (High-End Grade) | ≤ 0.005% (50 ppm) | Ultra-white glass grade for maximum light transmission |
| Al₂O₃ | ≤ 0.2% | Strict impurity control ensures high purity |
| Moisture Content | ≤ 0.5% | Advanced drying keeps moisture low and prevents caking |
Strict Particle Size Control for Uniform Melting
We understand that particle size control is critical for uniform glass melting. Therefore, we maintain strict standards for particle size distribution.
We offer multiple grades ranging from 8 to 120 mesh. The main particle size range (8–120 mesh) accounts for ≥95% of the product, with no coarse particles above 8 mesh. This ensures excellent melting uniformity.
We also support custom gradation. If you require specific ranges such as 16–40 mesh or 40–80 mesh, we can produce them to your specifications.
Our natural dolomite powder is the ideal choice for customers who demand the highest quality.
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