Product Details
What Is High Calcium Limestone?
High Calcium Limestone is a natural sedimentary rock composed of ≥95% calcium carbonate (CaCO₃). It is widely used across industries such as cement, metallurgy, flue gas desulfurization (FGD), and agriculture due to its high CaO yield, low impurity content, and excellent reactivity.
Key Features
✔ High CaCO₃ (≥95%), CaO ≥ 52%
✔ Low MgO (<2%)
✔ High Whiteness (≥90%) – ideal for paints & paper
✔ Customizable particle sizes (1μm to 50mm)
Comparison with Dolomitic Limestone:
| Property | High Calcium Limestone | Dolomitic Limestone |
|---|---|---|
| Main Composition | CaCO₃ (≥95%) | CaMg(CO₃)₂ |
| MgO Content | <2% | 10–20% |
| Calcined Product | CaO | CaO + MgO |
| Key Applications | Cement, FGD, Chemicals | Metallurgy, Agriculture |
Available in powder, granular, or lump form with customizable mesh sizes (100, 200, 325 mesh) and packaging (25kg bags, 500kg–1t jumbo bags, bulk tanker).
Production Process & Quality Control
1. Raw Material & Processing
Mine Selection: ≥95% CaCO₃, low SiO₂, minimal clay or iron
Crushing & Screening: Jaw + impact crusher, 0–50mm sorted
Grinding: Raymond (80–400 mesh), Ball mill (400–2500 mesh)
2. Quality Assurance
XRF testing (CaO, MgO, SiO₂)
Laser particle size analyzer (D50. D97)
ISO 2470 whiteness ≥ 90%
Bulk density: 1.4–1.6 g/cm³
Technical Specifications
| Parameter | Value Range | Method |
|---|---|---|
| CaCO₃ Content | ≥95% | EDTA Titration |
| MgO Content | ≤2% | XRF Analysis |
| SiO₂ Content | ≤1.5% | XRF |
| Particle Size | 1μm–50mm (custom) | Laser + Sieving |
| Whiteness | ≥90% | ISO 2470 |
| Moisture | ≤0.5% | 105°C Drying |
| Bulk Density | 1.4–1.6 g/cm³ | Fall Method |
| pH (slurry) | 8.0–9.5 | pH Meter |
Custom Size & Packaging
Sizes: 100 mesh, 200 mesh, 325 mesh, 0–5mm, 5–25mm, 25–50mm
Packaging: 25kg bags, 500–1000kg jumbo bags, bulk tankers
MSDS / TDS / COA provided upon request
Applications of High Calcium Limestone
1. Construction Materials
- Cement additive: reduces clinker content, lowers CO₂ emissions
- Concrete aggregate: enhances compressive strength (C30–C50)
- Dry mortar: improves workability
2. Environmental Applications
- Flue Gas Desulfurization (FGD): neutralizes SO₂ with ≥90% efficiency — supported by ScienceDirect study
- Water treatment: adjusts pH and precipitates heavy metals (e.g., Pb²⁺, Cd²⁺) — see Limestone Reactivity Research
3. Chemical Industry
- Precursor for PCC (precipitated calcium carbonate)
- Key raw material for carbide (CaC₂) production
4. Agriculture & Feed
- Soil amendment: neutralizes acidic soils (pH 4.5 → 6.5)
- Calcium supplement for livestock
5. Metallurgy
- Used as sintering flux and desulfurizer in steelmaking
- Suitable alternative to dolomite in low-Mg applications
Why Choose Our High-Calcium Limestone?
As a leading Chinese limestone supplier, Jintai delivers high-purity limestone with reliable quality, competitive pricing, and global supply flexibility—ideal for various industrial uses.
Highlights:
✅Global Shipping: Bulk bags, containers, OEM supported
✅High Purity: CaCO₃ ≥ 95%, low MgO
✅Cost Advantage: 20–30% cheaper than dolomite
✅Multi-Industry Use: Cement, FGD, PCC, Feed
✅Eco-Friendly: Recyclable, low waste
✅In-House Quarry: Stable raw material from Guangdong
✅Advanced Processing: High whiteness, minimal impurities
✅Custom Specs & Docs: COA, MSDS, TDS available
FAQs – Buyer’s Questions Answered
Q: How is it different from dolomitic limestone?
A: High Calcium Limestone is low in MgO (<2%) and ideal where magnesium is not required.
Q: Can you provide calcined lime (quicklime)?
A: Yes. See our Quicklime (Calcium Oxide) product for details.
Q: What’s the best size for agriculture?
A: 2–5mm granules ensure optimal soil reactivity and long-term pH adjustment.
Q: Do you supply ultra-fine powder?
A: Yes, 325–2500 mesh options for coatings, plastics, and high-end fillers.
Q: Can I get FAMI-QS certified feed-grade calcium?
A: Absolutely. We offer compliant products with full documentation.
Get Samples & Quote Now
Looking for reliable high calcium limestone from China?
Contact Jintai to get a free sample, TDS, and best pricing.
