Heavy Calcium Carbonate Factory in China Leading Industrial Grade Filler Suppliers

Looking for high-purity Heavy Calcium Carbonate? As leading China factory and suppliers, we provide premium inorganic fillers derived from natural calcite and marble. Our powder offers exceptional thermal stability up to 400C, high whiteness, and low oil absorption, ideal for rubber, plastics, and fireproof materials.

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

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About this product

Product information from the supplier.

Our Premium Heavy Calcium Carbonate is a high-performance inorganic filler engineered from ultra-pure natural calcite, marble, and limestone. Designed for industrial versatility, this powder is characterized by exceptional chemical purity, strong inertness, and remarkable thermal stability up to 400°C. With its high brightness and superior dispersibility, it serves as a cost-effective solution to enhance the physical and chemical properties of a wide range of polymer and construction materials.

Specifically optimized for the rubber and plastics industries, our heavy calcium carbonate acts as a critical functional filler in the production of PVC, PE, and PP. By integrating a fine particle distribution and low oil absorption, it allows manufacturers to significantly reduce raw material costs while simultaneously improving product rigidity, dimensional stability, and surface finish, making it an indispensable component for modern high-efficiency manufacturing.

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	Stable up to 400°C	Available Mesh Sizes	100 to 5000 Mesh
Chemical Nature	Inorganic Filler	Toxicity	Non-toxic & Odorless

Key Advantages

Enhanced Rigidity

Significantly improves hardness and dimensional stability in PVC pipes, profiles, and sheets.

Processing Efficiency

Optimizes melt flow characteristics in PE and PP, reducing shrinkage during the cooling phase.

Mechanical Strength

Boosts tensile strength and abrasion resistance for high-durability rubber seals and gaskets.

Superior Opacity

High whiteness reduces the dependency on expensive pigments, simplifying formulation design.

Thermal Stability

Maintains structural integrity under high temperatures, ideal for fire-resistant materials.

Cost Optimization

Acts as a high-efficiency extender to lower resin consumption without compromising quality.

Product Gallery

Management Platforms

Quality Control

Strict purity testing and mesh size verification for every batch produced.

Custom Grinding

Tailored particle size customization from 100 to 5000 mesh to meet specific needs.

Supply Chain Stability

Integrated mining and processing for consistent long-term material availability.

Technical Support

Expert guidance on filler loading ratios for PVC, PE, and PP applications.

Global Logistics

Professional packaging and shipping solutions for bulk industrial delivery.

Eco-Friendly Mining

Sustainable extraction processes adhering to international environmental standards.

Investment Return Comparison

Performance Metric	Pure Resin System	Resin + Heavy CaCO3
Raw Material Cost	Very High	Significantly Reduced
Product Rigidity	Standard	Enhanced / High
Dimensional Stability	Moderate	High Stability
Processing Speed	Standard	Faster (Optimized Flow)
Overall Profit Margin	Baseline	Increased per Unit

Frequently Asked Questions

Q: What is the main difference between Heavy and Light Calcium Carbonate?

Heavy calcium carbonate is produced through mechanical grinding of natural calcite/marble, resulting in higher density and different particle morphology compared to the chemically precipitated Light Calcium Carbonate.

Q: How does this filler affect the whiteness of PVC products?

Due to its high natural purity and brightness, our Heavy Calcium Carbonate improves opacity and whiteness, often reducing the amount of TiO2 or other white pigments needed.

Q: Can the mesh size be customized for specific industrial needs?

Yes, we offer a wide range of standard sizes from 100 to 5000 mesh and accept full customization to ensure the powder meets your exact technical specifications.

Q: In which rubber applications is this filler most effective?

It is highly effective in producing industrial belts, gaskets, hoses, and seals where improved abrasion resistance and tensile strength are required.

Q: Is this material safe for use in fire-resistant building materials?

Absolutely. Its high thermal stability (up to 400°C) and inorganic nature make it an ideal filler for fire-resistant ceilings and other building materials.

Q: How does Heavy Calcium Carbonate reduce production costs in PP production?

It acts as a high-performance extender, replacing a portion of the expensive polypropylene resin while maintaining or even enhancing the stiffness and impact resistance of the final product.