Pure Calcium Carbonate Powder
Calcium Oxide (CaO) Content:≥ 50% – 53%
Magnesium Oxide (MgO) Content:≤ 1.5% – 2.0%
Silicon Dioxide (SiO₂):≤ 2.0% – 5.0%
Ferric Oxide (Fe₂O₃):≤ 0.1% – 0.3%
Moisture:≤ 1.0%
Whiteness:≥ 50% – 70%
A Commitment to Purity and Consistency
We offer pure calcium carbonate powder, reflecting our commitment to purity. We use high-purity natural limestone as the raw material, which undergoes multiple processing steps such as crushing, screening, and washing to produce the final product.
Our factory, established in 2017, has extensive experience in calcium product manufacturing. Our team consists of 30 skilled employees, including more than 12 technical staff.
We are not just a stone powder processor; we are your reliable supplier of calcium carbonate materials. Our pure calcium carbonate powder is produced with a strong focus on consistency.
Key Specifications and Full Process Quality Control
We maintain strict quality control throughout the entire production process to ensure stable chemical composition and excellent physical properties. The table below outlines our standards.
We use high-purity natural limestone ore to ensure purity from the source. Testing is carried out in accordance with the JC/T 619-2019 standard to guarantee compliance with calcium carbonate requirements. We also strictly control magnesium content, a key quality indicator for limestone-based products.
Our pure calcium carbonate powder is available in multiple grades to meet different industrial needs.
Technical Parameters
|
Parameter |
Technical Index |
Our Advantage & Guarantee |
|
Product Name |
Limestone sand | High-purity natural limestone ensures purity from the source |
| Calcium Carbonate (CaCO₃) Content | ≥ 90% – 95% | Tested according to JC/T 619-2019 standard for compliance |
| Calcium Oxide (CaO) Content | ≥ 50% – 53% | Stable calcium content derived from controlled CaCO₃ levels |
| Magnesium Oxide (MgO) Content | ≤ 1.5% – 2.0% | Strict control of magnesium, a key limestone quality indicator |
| Silicon Dioxide (SiO₂) | ≤ 2.0% – 5.0% | Reduced through careful raw material selection |
| Ferric Oxide (Fe₂O₃) | ≤ 0.1% – 0.3% | Controlled to maintain whiteness and prevent coloration issues |
| Moisture | ≤ 1.0% | Strict moisture control ensures good flowability and prevents caking |
| Whiteness | ≥ 50% – 70% | Measured using a whiteness meter to ensure appearance consistency |
Multi-Grade Products for Multiple Industries
We offer multiple particle size grades ranging from 8 to 120 mesh to meet the needs of various industries, including building materials, glass manufacturing, metallurgy, and environmental applications.
For example, the 30–50 mesh grade is commonly used in glass production as a calcium source to improve glass stability.
We also support custom gradation, allowing you to request specific particle size distributions or remove designated size fractions according to your requirements.
With a monthly production capacity of 300,000 tons, we can ship standard orders within 3–5 working days. Our pure calcium carbonate powder is backed by a 3-month quality warranty.
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