At Ultra Limited for Industrial Development, we are proud to be a leading supplier of high-quality calcium carbonate for the paper industry. Our bright white calcium carbonate is a critical ingredient in paper production, used both as a filler in alkaline papermaking and as a coating pigment. The alkaline papermaking process, which has gained prominence for producing papers with enhanced longevity, benefits significantly from the use of calcium carbonate.

Calcium carbonate, the most abundant non-silicon-based mineral on Earth, is valued for its cost-effectiveness and versatile properties. In paper manufacturing, it is used to achieve brighter and bulkier paper with improved texture and performance. As a white pigment, calcium carbonate also plays a role in printing inks, enhancing gloss and reducing costs by replacing more expensive materials like titanium dioxide.

There are two primary types of calcium carbonate used in the paper industry: Ground Calcium Carbonate (GCC) and Precipitated Calcium Carbonate (PCC).

• Ground Calcium Carbonate (GCC) is produced by grinding natural sources such as limestone or marble. Known for its high brightness (86-95%) and purity, GCC is used in alkaline wood-free papermaking processes. The rhombohedral particle shape of GCC enhances paper opacity and bulk, making it a preferred choice for manufacturers.
• Precipitated Calcium Carbonate (PCC), on the other hand, is synthetically produced and offers greater control over particle size and shape, providing superior optical and physical properties.

Calcium carbonate offers numerous advantages in the papermaking process:

• Improved Brightness and Whiteness: Essential for high-quality paper with vibrant finishes.
• Cost Efficiency: Acts as an extender to replace pricier components like titanium dioxide.
• Enhanced Durability: Strengthens paper while maintaining its bulk.
• Eco-Friendly Process: Calcium carbonate contributes to the sustainability of paper manufacturing by reducing energy consumption and minimizing environmental impact.

At Ultra Limited, our advanced manufacturing techniques and dedicated R&D team ensure that our calcium carbonate products meet the diverse needs of the paper industry. By delivering consistent quality and innovative solutions, we help manufacturers develop cost-effective, high-performance formulations tailored to their specific requirements.

Whether you’re creating coated papers, printing inks, or bulkier alkaline papers, Ultra Limited’s calcium carbonate is the ideal solution for enhancing quality and achieving superior results in your production process.