Calcium carbonate is one of the most widely used industrial powders, serving as a filler and functional additive in plastics, rubber, paints, paper, adhesives, food and pharmaceuticals. The reliable and efficient transfer of calcium carbonate from storage to processing equipment is essential for maintaining product quality and production continuity. Pneumatic conveying provides a clean, enclosed and flexible method for moving this powdery material across distances of a few meters to hundreds of meters, with full control over throughput and minimal environmental impact.

A complete conveying system includes a blower, a rotary airlock feeder, conveying pipe, a cyclone separator, a dust collector, and a PLC control panel. Calcium carbonate is fed into a gas stream and carried to the destination. At the discharge point, the product falls into a silo or process hopper while the conveying air is cleaned by the dust collector. The simple yet robust design allows easy integration into existing production lines.

Two main conveying modes are available for calcium carbonate. Dilute phase conveying uses high air velocity to suspend the particles in a stream and is suitable for moderate capacities and short distances. Dense phase conveying pushes a compact plug of material at low velocity, which reduces pipe wear, product breakage and energy consumption. For fine calcium carbonate powders, dense phase is often preferred because it preserves particle size and minimizes dust generation, especially when handling high-capacity transfer over long distances.

Customization is the core of every successful pneumatic conveying project. We evaluate the material's bulk density, moisture content, particle size distribution, abrasiveness and flowability before selecting the appropriate pipe diameter, bend radius, conveying velocity, and the type of feeder. For example, a rotary valve with a tapered inlet is used for sticky or moist products, while a screw feeder may be better for very fine powders. The system can also be configured with inert gas conveying to prevent oxidation, or with dehumidified air to avoid moisture pick-up.

Using a pneumatic conveying system for calcium carbonate provides numerous benefits. The fully enclosed construction prevents dust leakage, keeps the plant clean, and protects operators from fine powder inhalation. In addition, the system requires very little floor space and can be routed in any direction, allowing maximum flexibility in plant layout. Power consumption is optimized by using variable-frequency drives and accurate flow controls. With fewer moving parts, maintenance is straightforward and operating costs remain low. Automated operation reduces manual labor and improves dosing accuracy.

Our customized pneumatic conveying systems are widely used in calcium carbonate processing plants for unloading bulk trucks, feeding mills and classifiers, transferring powder to silos, and supplying mixers and packing machines. We also provide complete engineering packages including system design, fabrication, installation, commissioning and after-sales support. Whether you need a compact single-line unit or a multi-point distribution network, our engineers will work closely with you to develop a cost-effective, reliable and safe solution that meets your exact requirements. Contact us today to discuss your project and receive a tailored proposal.