Heavy Calcium Carbonate Factory in China | Leading Industrial Fillers Suppliers

Looking for premium Heavy Calcium Carbonate from a trusted China factory? Our high-purity fillers offer low oil absorption and superior gloss. As leading suppliers, we provide cost-effective solutions for rubber, plastics, coatings, and pharmaceuticals to enhance product durability and performance.

SupplierShijiazhuang Fengersheng Mining Co., Ltd.www.fesmining.com

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About this product

Product information from the supplier.

Industrial-Grade Heavy Calcium Carbonate is a premium, versatile inorganic powdered filler engineered from high-purity natural carbonate minerals including calcite, marble, and limestone. Distinguished by its exceptional chemical purity, thermal stability up to 400°C, and superior whiteness, this material serves as a critical functional additive across high-demand industrial sectors. Its low oil absorption and outstanding dispersibility make it an ideal choice for manufacturers seeking to balance material performance with cost-efficiency.

Specially optimized for the rubber and paint industries, our Heavy Calcium Carbonate acts as both a reinforcing filler and an extender pigment. By integrating this high-grade mineral into formulations, producers can significantly enhance the mechanical strength of rubber compounds and improve the opacity, brightness, and abrasion resistance of industrial coatings. From automotive finishes to precision rubber seals, this material ensures a professional-grade surface finish and prolonged product durability.

Detailed Parameters

Calcium Content	98.6%	Residue on Sieve	0.005%
pH Value	9.4	Whiteness	94.2%
Moisture	0.18%	Clinching Point (d100)	11.11
Thermal Stability	Up to 400°C	Available Mesh Sizes	100 to 5000 Mesh
Chemical Nature	Inert/Non-toxic	Customization	Available on Request

Key Advantages

Mechanical Reinforcement

Significantly boosts tensile strength and hardness in rubber matrices, reducing deformation under extreme mechanical stress.

Enhanced Durability

Increases abrasion and scratch resistance for coatings and rubber products, extending the service life in harsh environments.

Optical Optimization

Improves opacity and brightness in paints, reducing the reliance on expensive titanium dioxide without sacrificing quality.

Rheological Control

Optimizes viscosity and flow properties, ensuring smooth application through brushing, rolling, or spraying without sagging.

Dimensional Stability

Minimizes shrinkage and deformation during the curing process, critical for precision automotive and machinery components.

Broad Compatibility

Chemically stable and non-reactive, ensuring seamless integration with acrylics, epoxies, SBR, NBR, and EPDM systems.

Product Gallery

Management Platforms

Pure Mineral Sourcing

Strict selection of premium calcite and marble to ensure consistent chemical purity and whiteness.

Precision Grinding

Advanced milling technology delivering customized mesh sizes from 100 to 5000 for specific industrial needs.

Quality Control

Rigorous testing of pH levels, moisture, and particle distribution to meet international standards.

Dispersion Tech

Optimized particle surface properties for effortless mixing into resin and rubber polymer systems.

Sustainable Mining

Eco-friendly extraction processes adhering to non-metallic mining environmental regulations.

Logistics Expertise

Secure packaging and global shipping networks to ensure moisture-free delivery of powdered materials.

Investment Return Comparison

Performance Metric	Standard Fillers	Our Heavy Calcium Carbonate
Raw Material Cost	High (TiO2 based)	Low (Optimized Cost)
Mechanical Strength	Moderate	High Reinforcement
Surface Finish	Variable	Smooth & Uniform
Processing Speed	Standard	Faster Dispersion
Product Lifespan	Baseline	Extended Wear Resistance

Frequently Asked Questions

Q: What is the main difference between heavy and light calcium carbonate?

Heavy calcium carbonate is produced by grinding natural minerals (ground), resulting in a denser particle and higher bulk density, whereas light calcium carbonate is typically precipitated chemically.

Q: How does this product reduce the cost of paint formulations?

It acts as an extender pigment, allowing manufacturers to increase volume and maintain opacity while reducing the amount of expensive titanium dioxide required.

Q: Can it be used with synthetic rubbers like EPDM or NBR?

Yes, its chemical inertness and stability make it fully compatible with both natural rubber and various synthetic rubbers, including SBR, NBR, and EPDM.

Q: What mesh size is recommended for high-precision coatings?

For high-precision coatings requiring a very smooth finish, we typically recommend 1250 mesh or higher, though customized sizes are available based on specific viscosity needs.

Q: Does heavy calcium carbonate affect the thermal stability of rubber?

On the contrary, it provides excellent thermal stability, maintaining its structural integrity at temperatures below 400°C, which helps the final product withstand heat.

Q: Is the product non-toxic and safe for architectural coatings?

Yes, our industrial-grade heavy calcium carbonate is non-toxic, odorless, and chemically stable, making it perfectly safe for use in indoor and outdoor architectural coatings.