Product Overview
Ground Calcium Carbonate is a key mineral powder product distributed by Hongjian Chemical, produced from high-quality natural limestone or marble through multi-stage crushing and precise classification.

Key Properties: Natural raw material, cost-effective, stable physical and chemical properties, high filling capacity

• PVC Profile/Pipe Grade: Concentrated particle size distribution (d97: 15-25μm), low oil absorption, effectively improves product stiffness, heat deflection temperature, and dimensional stability, reducing production costs.
• Polyolefin Masterbatch Grade: High whiteness (≥95%), good compatibility with carrier resin, suitable for preparing high-fill ratio (70-85%) masterbatches with excellent dispersion.

• Interior Emulsion Paint Grade: Fineness 800-1250 mesh, excellent suspension and film feel, can partially replace titanium dioxide to reduce costs.
• Industrial Paint Grade: Strong weather resistance, high chemical inertness, improves coating corrosion resistance and wear resistance, suitable for primers, intermediate coats, and marine paints.

• General Rubber Products Grade: Can partially replace carbon black and silica, improves processing performance, increases product hardness, modulus, and wear resistance.
• Light/Colored Rubber Products Grade: High whiteness, does not affect product color, high filling capacity, significant cost advantage.

• Silicone Sealant Grade: Extremely low moisture content (≤0.2%), good compatibility with the system, provides suitable thixotropy and extrudability, prevents settling.
• Building Putty/Grout Grade: Reasonable particle morphology, improves workability and sandability, enhances product hardness and crack resistance.

• Own high-quality calcite mines with CaCO₃ content ≥98.5%, low impurities like iron and silicon.
• High batch-to-batch stability of raw materials ensures product consistency from the source.

• Imported German vertical grinding and classification systems enable precise control of d97 from 3μm to 45μm.
• Multi-stage iron removal process ensures iron content meets requirements for high-end applications.

• Online laser particle size analyzer monitoring ensures stable particle size distribution.
• Key indicators like whiteness, oil absorption, and pH value are tested for each batch.

• Customized products with specific particle size distributions and surface treatments (e.g., stearic acid, titanate, aluminate) according to customer process requirements.
• Technical support team assists customers with formula optimization and application problem-solving.

• Provides recommended dosage and process parameter references for different application fields.
• Assists customers in evaluating the impact of different product specifications on their product performance.

• Standard packaging: 25kg/bag laminated woven bags, also available in ton bags or other packaging forms upon request.
• Warehouses located in East, South, and North China with a complete logistics distribution network.

• Product is non-toxic, odorless, non-irritating, and complies with relevant environmental regulations.
• Provides complete MSDS and transportation identification reports.