Powder and Bulk Solids Engineering Guides

Coperion K-Tron developed two mobile batch-feeding stations for Johnson Matthey that return to a docking point for vacuum refill, then move between mixers; the arrangement solved a headroom constraint by integrating the receiver function into the feeder hopper and placing filtration in the return line.

Solukon’s SFM-PCU transfers recovered metal powder from a sensor-monitored pickup point through an integrated vacuum-conveying line into a monitored 50 L container, creating a closed handoff from depowdering toward recycling without establishing a universal exposure or explosion-protection rating.

At Bayer Hungaria’s Nagyigmánd plant, two Piab piFLOW f vacuum conveyors replaced manual movement of 25 kg corn-seed coating-powder bags to equipment 20 m above the floor; Piab reports a requested rate of 350 kg/h and a maximum achieved rate of 440 kg/h after commissioning.

Repco replaced a bucket elevator between mixing and packaging with a Coperion K-Tron Omniveyor dense-phase pressure-vessel system after full-scale trials at Kansas State University’s Bulk Solids Innovation Center demonstrated transfer of representative premixes without the segregation seen in the old process.

Choose dense-phase pneumatic conveying only after the material, flow regime, complete pipe route and acceptance limits have been tested together; a low conveying velocity on its own proves very little.

Select and size a rotary valve from the material properties, required mass flow, pressure differential, leakage tolerance, temperature, pocket filling, speed, wear, cleanability, and safety constraints.

A universal sizing formula is not sufficient for every bulk solid or system.

Rotary airlock problems should be diagnosed from the symptom and the full process context.

Leakage, jamming, wear, product damage, bridging, and seal failures can originate from the valve, the handled material, pressure conditions, or connected equipment.

Select a vacuum conveying system from measured material behavior and a defined duty, not from pipe diameter alone.

The design basis should state the required rate, route, lift, pickup method, destination pressure, cleaning expectation and hazard controls.

Pharmaceutical continuous manufacturing integrates material feeding and one or more processing steps into a continuously operating system.

Product quality depends on stable mass flow, residence time behavior, process monitoring, control strategy and the ability to trace and divert affected material.

Pfizer’s HighCon facility in Freiburg is a highly automated high-containment oral-solid-dose plant that connects powder handling, production and packaging; Pfizer reported a €300 million investment and capacity for up to seven billion additional tablets and capsules when the plant opened in May 2022.

A reliable pneumatic conveying design starts with representative material testing and a complete process duty.

Engineers then select the conveying regime, pressure or vacuum arrangement, feed method, pipe route, air mover, receiver, filtration, controls, and protection concept as one system.